Dr. James R. Slusser Profile

Dr. James R. Slusser

Director at Colorado State Univ

SPIE Involvement:

Author

Publications (76)

Proceedings Article | 12 August 2009 Paper

Aerosol column absorption measurements using co-located UV-MFRSR and AERONET CIMEL instruments

N. Krotkov, G. Labow, J. Herman, J. Slusser, R. Tree, G. Janson, B. Durham, T. Eck, B. Holben

Proceedings Volume 7462, 746205 (2009) https://doi.org/10.1117/12.826880

KEYWORDS: Aerosols, Ultraviolet radiation, Calibration, Absorption, Scattering, Visible radiation, Atmospheric modeling, Atmospheric optics, Atmospheric particles, Radiometry

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SPIE Journal Paper | 1 November 2008

2003 North American interagency intercomparison of ultraviolet spectroradiometers: scanning and spectrograph instruments

Kathleen Lantz, Patrick Disterhoft, James Slusser, Wei Gao, Jerry Berndt, Germar Bernhard, Sarah Bloms, Charles Booth, James Ehramjian, Lee Harrison, George Janson, Paul Johnston, Peter Kiedron, Richard McKenzie, Michael Kimlin, Patrick Neale, Michael O'Neill, Vi Quang, Gunther Seckmeyer, Thomas Taylor, Sigrid Wuttke, Joseph Michalsky

JARS, Vol. 2, Issue 01, 023547, (November 2008) https://doi.org/10.1117/12.10.1117/1.3040299

KEYWORDS: Lamps, Calibration, Ultraviolet radiation, Spectrographs, Ozone, Radiometry, Diffusers, Atmospheric monitoring, Algorithm development, Monochromators

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Proceedings Article | 9 October 2007 Paper

Dependence of erythemally weighted UV radiation on geographical parameters in the United States

Xinli Wang, Wei Gao, John Davis, Becky Olson, George Janson, James Slusser

Proceedings Volume 6679, 667903 (2007) https://doi.org/10.1117/12.735284

KEYWORDS: Ultraviolet radiation, Ozone, Radiometry, Climatology, Solar radiation, Clouds, Aerosols, Calibration, Agriculture, Photochemistry

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The relationship between solar ultraviolet (UV) radiation reaching the Earth's surface and geographical parameters is helpful in estimating the spatial distribution of UV radiation, which provides useful information to evaluate the potential impacts of enhanced UV levels on human health, agriculture, environment, and ecosystems for sustainable development. Measurements of erythemally weighted UV radiation at the sites of the United States Department of Agriculture UV-B Monitoring and Research Program (UVBMRP) monitoring network were analyzed to investigate the geographical distribution and seasonal variations. Twenty nine observation sites, which had continuous measurements during the recent six years, are selected for this study; twenty seven of them are distributed in the United States, including one in Hawaii and one in Alaska, and two of them are located in Canada along the United States border. The measurements were taken using the Yankee Environmental Systems Inc. (YES) UVB-1 ultraviolet pyranometer. This work focuses the data from the recent six years of 2001-2006 and the measurements during summer months (June-August) are emphasized. For each day, the measurements are integrated from sunrise to sunset to produce the daily UV dosage, which is then averaged for different seasons or for the whole year over the six years to generate the average daily UV dosage. A multivariable regression technique is exploited to characterize the dependence of UV dosages on geographical parameters, including latitude and altitude. The results show that, although there are many factors, such as clouds, ozone, aerosols, air pollutants, and haze, that affect the UV radiation intensity at a location, the latitude and altitude of the site are the primary factors that regulate the average daily UV dosage. On average over the last six years in the United States, more than 95% of the variability in averaged daily UV dosages can be explained by the latitude and altitude. Longitude is not statistically significant in predicting UV irradiance. Nonlinear relationships can be statistically established between averaged daily UV dosage and latitude and altitude. The effects of latitude on UV radiation are much more significant than the altitude. The average daily UV dosages decrease exponentially with the latitude. While an increase of one degree in latitude may lead to a decrease of more than 350 Jm^-2day^-1 in the averaged daily dosage in the low latitudes, the decrease is around 100 Jm^-2day^-1 in the mid latitudes and less than 50 Jm^-2day^-1 in the high latitudes. The averaged daily UV dosage increases with altitude almost linearly until up to 1500 meters. Then it increases gradually and no significant increases can be detected above 2600 meters. Although the regression against latitude and altitude is statistically highly significant, notable deviations from the regression predictions are observed in the lower and mid latitudes and lower altitudes. These discrepancies are most likely due to the intense anthropogenic activities and natural events occurring in this area, including natural fire, industrial production, driving, and farming. These locally dependent activities will generate more UV absorbers into the air.

SPIE Journal Paper | 1 August 2007

Calibration, data processing, and maintenance of the United States Department of Agriculture high-resolution ultraviolet spectroradiometers

Piotr Kiedron, Mark Beauharnois, Jerry Berndt, Patrick Disterhoft, Lee Harrison, Joseph Michalsky, Gwendolyn Scott, James Schlemmer, James Slusser

OE, Vol. 46, Issue 08, 086201, (August 2007) https://doi.org/10.1117/12.10.1117/1.2769599

KEYWORDS: Calibration, Ultraviolet radiation, Ozone, Lamps, Data processing, Aerosols, Mercury, Optical engineering, Free electron lasers, Absorption

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Proceedings Article | 11 October 2006 Paper

Ultraviolet aerosol optical properties retrieved during the 2006 MIRAGE-Mex experiment: initial results

Thomas Taylor, James Slusser, Andrés Hernández, Michel Grutter, Barry Lefer

Proceedings Volume 6362, 636203 (2006) https://doi.org/10.1117/12.687942

KEYWORDS: Atmospheric modeling, Aerosols, Ultraviolet radiation, Ozone, Atmospheric particles, Scattering, Error analysis, Calibration, Optical properties, Data modeling

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Proceedings Article | 11 October 2006 Paper

Validation of ozone and aerosol retrieval methods with UV rotating shadowband spectroradiometer (RSS)

Piotr Kiedron, Jim Schlemmer, Jim Slusser, Patrick Disterhoft

Proceedings Volume 6362, 636211 (2006) https://doi.org/10.1117/12.687174

KEYWORDS: Ozone, Received signal strength, Aerosols, Calibration, Phase modulation, Ultraviolet radiation, Lamps, Geometrical optics, Algorithm development, Digital filtering

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Proceedings Article | 11 October 2006 Paper

International intercomparison of multiband filter radiometers in Oslo 2005

B. Johnsen, B. Kjeldstad, T. Aalerud, L. Nilsen, J. Schreder, M. Blumthaler, G. Bernhard, A. Bagheri, B. Bhattarai, C. Topaloglou, G. Zablocki, O. Meinander, B. Høiskar, R. Haugen, W. Durham, G. Janson, A. Marrero, A. Dahlback, D. Bolsée, J. Slusser, J. Stamnes, C. Torres, A. Smedley, L.-E. Paulsson, K. Lakkala, A. Webb, J. Ørbæk, A. Grimenes, T. Ringstad, T. Lange, W. Josefsson

Proceedings Volume 6362, 63620W (2006) https://doi.org/10.1117/12.688918

KEYWORDS: Radiometry, OSLO, Ultraviolet radiation, Curium, Remote sensing, Clouds, Atmospheric sensing, Ozone, Aerosols, Climatology

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Proceedings Article | 11 October 2006 Paper

Long-term evaluation of the calibration of YES UVB-1 broadband radiometers of the Central UV Calibration Facility (1994-2005) and the suite of UV radiometers in the USDA UV Monitoring Network

K. Lantz, P. Disterhoft, C. Wilson, G. Janson, B. Durham, J. Slusser

Proceedings Volume 6362, 63620X (2006) https://doi.org/10.1117/12.690059

KEYWORDS: Radiometry, Calibration, Ultraviolet radiation, Ozone, Atmospheric modeling, Atmospheric sciences, Lamps, Californium, Broadband telecommunications, Spectral calibration

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Proceedings Article | 28 September 2006 Paper

A 3DVAR land data assimilation scheme Part 2: Test with ECMWF ERA-40

Lanjun Zou, Wei Gao, Tongwen Wu, Xiaofeng Xu, Bingyu Du, James Slusser

Proceedings Volume 6298, 62981M (2006) https://doi.org/10.1117/12.679991

KEYWORDS: Data modeling, Environmental sensing, Climatology, Temperature metrology, Atmospheric modeling, Data centers, Remote sensing, Information science, Information technology, Error analysis

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Proceedings Article | 27 September 2006 Paper

Spectral distribution of UV-B irradiance derived by synthetic model compared with simulation results of TUV and ground measurements

Xinli Wang, Wei Gao, James Slusser, John Davis, Zhiqiang Gao, Gwen Scott, Becky Olson, Nickolay Krotkov, Min Xu, Xin-Zhong Liang

Proceedings Volume 6298, 62980L (2006) https://doi.org/10.1117/12.681464

KEYWORDS: Ultraviolet radiation, Data modeling, Radiometry, Ozone, Atmospheric modeling, Radiation effects, Agriculture, Ecosystems, Clouds, Calibration

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Multifilter rotating shadowband radiometers are deployed in the United States, Canada, and New Zealand by the USDA (United States Department of Agriculture) UV-B (ultraviolet-B) Monitoring and Research Program to measure UV-B irradiances at seven discrete wavelengths. A synthetic model is used to construct the continuous spectral distribution, from which irradiance integrals can be performed for various purposes. The derived spectral data are posted for public use through a web accessible database. Although the synthetic model has been validated with a certain data set, few works have been seen to compare the results of the synthetic model with simulations of other widely accepted models such as TUV. Through this comparison the validation of the synthetic model can be further confirmed and alternative techniques for constructing spectral irradiances from discrete narrowband measurements can also be explored. In this study the data from the USDA UV-B Monitoring and Research Program are used to evaluate the synthetic model and to explore the capability of the TUV model for constructing continuous spectra from discrete measurements. Simulations of the TUV model are compared with discrete measurements, erythema-weighted broadband measurements, and the results of the synthetic model. Good agreements between derived results by using TUV model and the synthetic model with measurements in general further confirm the validation of the synthetic model. Generally, the spectral irradiances constructed by using synthetic model are lower than those by using the TUV model at very shorter wavelengths (<301 nm) and at the wavelengths of 315-342 nm, but are higher at other wavelengths. The ratio of erythemal doses derived by using the TUV simulation to broadband measurements varies between 0.87-1.02. Constructed erythemal doses by using the TUV simulation are closer to broadband measurements than those obtained by using the synthetic model. These results suggest that the TUV model may be a good alternative to accurately estimate continuous spectral distributions from discrete measurements.

Proceedings Article | 27 September 2006 Paper

A 3DVAR land data assimilation scheme Part 1: Mathematical design

Lanjun Zou, Wei Gao, Tongwen Wu, Xiaofeng Xu, Bingyu Du, James Slusser

Proceedings Volume 6298, 62982E (2006) https://doi.org/10.1117/12.679994

KEYWORDS: Data modeling, Climatology, Error analysis, Environmental sensing, Atmospheric modeling, 3D modeling, Mathematical modeling, Data acquisition, Temperature metrology

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Proceedings Article | 27 September 2006 Paper

Sensitivity of CWRF simulations of the China 1998 summer flood to cumulus parameterizations

Shuyan Liu, Wei Gao, Xin-Zhong Liang, Hua Zhang, James Slusser

Proceedings Volume 6298, 62981I (2006) https://doi.org/10.1117/12.676216

KEYWORDS: Climatology, Environmental sensing, Floods, Data modeling, Convection, Clouds, Signal processing, Remote sensing, Computer simulations, Copper

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Proceedings Article | 27 September 2006 Paper

Analysis of temporal variations of surface albedo from MODIS

Wei Gao, Qifeng Lu, Zhiqiang Gao, Wanli Wu, Bingyu Du, James Slusser

Proceedings Volume 6298, 62981G (2006) https://doi.org/10.1117/12.676197

KEYWORDS: MODIS, Climatology, Atmospheric modeling, Data modeling, Bidirectional reflectance transmission function, Remote sensing, Reflectivity, Vegetation, Environmental sensing, Atmospheric sciences

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Proceedings Article | 27 September 2006 Paper

Validation of the TUV module in CWRF using USDA-UVB network observations

Min Xu, Xin-Zhong Liang, Wei Gao, James Slusser, Kenneth Kunkel

Proceedings Volume 6298, 62980N (2006) https://doi.org/10.1117/12.680122

KEYWORDS: Ultraviolet radiation, Atmospheric modeling, Aerosols, Climatology, Clouds, Ozone, Visible radiation, Reflectivity, Solar radiation models, Data modeling

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Proceedings Article | 27 September 2006 Paper

The LUCC responses to climatic changes in China in the last 20 years

Zhiqiang Gao, Wei Gao, James Slusser

Proceedings Volume 6298, 629818 (2006) https://doi.org/10.1117/12.676236

KEYWORDS: Climatology, Climate change, Data modeling, Vegetation, Ecosystems, Environmental sensing, Remote sensing, Databases, Agriculture, Ecology

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Proceedings Article | 27 September 2006 Paper

CWRF simulations of the China 1991 and 1998 summer floods

Shuyan Liu, Wei Gao, Xin-Zhong Liang, Hua Zhang, James Slusser

Proceedings Volume 6298, 62981J (2006) https://doi.org/10.1117/12.676218

KEYWORDS: Climatology, Floods, Environmental sensing, Atmospheric modeling, Climate change, Performance modeling, Physics, Remote sensing, Spatial resolution, Atmospheric physics

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Proceedings Article | 27 September 2006 Paper

Preliminary results of a UV-B effect incorporated GOSSYM model

Xinli Wang, Wei Gao, K. Raja Reddy, James Slusser, Min Xu

Proceedings Volume 6298, 62980O (2006) https://doi.org/10.1117/12.681446

KEYWORDS: Radiation effects, Solar radiation models, Photosynthesis, Data modeling, Climatology, Nitrogen, Agriculture, Atmospheric modeling, Environmental management, Solar radiation

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Proceedings Article | 27 September 2006 Paper

Numerical simulation of surface heat and water fluxes in the Tibet Plateau

Qifeng Lu, Wei Gao, Zhiqiang Gao, Wanli Wu, Zhigang Zhang, Bingyu Du, James Slusser

Proceedings Volume 6298, 62981H (2006) https://doi.org/10.1117/12.676199

KEYWORDS: Soil science, Atmospheric modeling, Heat flux, Temperature metrology, Solar radiation models, Device simulation, Pulmonary function tests, Climatology, Performance modeling, Numerical simulations

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Proceedings Article | 1 November 2005 Paper

UV aerosol optical properties at three US sites

James Slusser, Tommy Taylor, N. A. Krotkov

Proceedings Volume 5979, 59791O (2005) https://doi.org/10.1117/12.628124

KEYWORDS: Aerosols, Ultraviolet radiation, Atmospheric modeling, Optical properties, Ozone, Scattering, Absorption, Atmospheric sensing, Atmospheric particles, Fourier transforms

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Proceedings Article | 1 November 2005 Paper

Out-of-band rejection studies of the UV multi-filter rotating shadow-band radiometers

Kathleen Lantz, Patrick Disterhoft, Charles Wilson, George Janson, James Slusser, Sarah Bloms, Joseph Michalsky

Proceedings Volume 5979, 59791N (2005) https://doi.org/10.1117/12.627813

KEYWORDS: Calibration, Radiometry, Photodiodes, Ultraviolet radiation, Optical filters, Lamps, Silicon, Silicon carbide, Electronic filtering, Sun

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Proceedings Article | 13 September 2005 Paper

New USDA UVB synthetic spectra algorithm

John Davis, James Slusser

Proceedings Volume 5886, 58860B (2005) https://doi.org/10.1117/12.620269

KEYWORDS: Ultraviolet radiation, Visible radiation, Optical filters, Calibration, Algorithm development, Sensors, Data modeling, Agriculture, Radiometry, Ozone

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Proceedings Article | 13 September 2005 Paper

Measurement of spectral signatures of invasive plant species with a low cost spectrometer

Roger Tree, James Slusser

Proceedings Volume 5886, 58860U (2005) https://doi.org/10.1117/12.619294

KEYWORDS: Spectroscopy, Reflectivity, Ocean optics, Stray light, Charge-coupled devices, Vegetation, Optical filters, Diffusers, Temperature metrology, Electronic filtering

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Proceedings Article | 13 September 2005 Paper

Application of CCD array digital fiber optic spectrometers in determination of within-tree and within-canopy irradiances of UV-B radiation

Erin Beneski, John Bassman, James Slusser, Wei Gao

Proceedings Volume 5886, 58860X (2005) https://doi.org/10.1117/12.620659

KEYWORDS: Radiation effects, Diffusers, Ultraviolet radiation, Sensors, Optical fibers, Spectrometers, Charge-coupled devices, Optoelectronics, Calibration, Fiber optics

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Although our understanding of the effects of UV-B radiation on annual and crop plants has improved considerably over the past three decades, knowledge of effects on perennial plants, particularly trees, remains much more limited. Understanding the effects of enhanced UV-B radiation on forest trees has been hampered by an inability to develop realistic dose-response relationships, which in turn, has resulted from lack of instrumentation sufficient to accurately determine biologically effective UV irradiances within the canopy. Traditional spectroradiometers equipped with spherical domes have sensor heads that are too large to make within-canopy measurements, especially at individual leaf locations or other small targets. Broad-band sensors, which are smaller, lack the wavelength discrimination necessary to calculate biological effective UV-B radiation. Measurement of UV radiation above a plant canopy provides little information about the radiation environment of individual leaves within the canopy. This is important because whole plant response to UV-radiation is an integrated response of all of the leaves, though obviously not all leaves contribute equally. Within leaves, stress stimuli may induce compensatory responses in unaffected portions of the same leaf, in other adjacent leaves, and even in remote leaves. It is not known if this is true for W radiation; the only way of finding out is to have a probe small enough to measure diminutive and precise locations within the canopy. In this study a StellarNet EPP2000C spectrometer equipped with a 400 μm optical fiber and Teflon diffuser was used to determine solar UV-B irradiances above and within the canopy of representative forest trees. Data was collected at different times during the day, for equivalent leaf and canopy positions in several representative trees. Data collected in the open and below-canopy positions are compared with an Optronics OL-754 spectroradiometer and data obtained at the USDA UVB Monitoring and Research Program field site at Albion, Washington. Results are considered in the context of precision, accuracy and logistical attributes. Sufficient precision and accuracy were shown to suggest that, with proper calibration, this inexpensive and highly portable instrument can be used to make precise measurements of solar UV-B radiation within tree canopies.

Proceedings Article | 10 September 2005 Paper

Effect of supplemental ultraviolet radiation on the concentration of phytonutrients in green and red leaf lettuce (Lactuca sativa) cultivars

Steven Britz, Charles Caldwell, Roman Mirecki, James Slusser, Wei Gao

Proceedings Volume 5886, 58860W (2005) https://doi.org/10.1117/12.625576

KEYWORDS: Ultraviolet radiation, Control systems, Radiation effects, Magnesium, Lamps, Tissues, Genetics, Solar radiation, Biological research, Atmospheric modeling

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Proceedings Article | 10 September 2005 Paper

Development of UV-B screening compounds in response to variation in ambient levels of UV-B radiation

Joe Sullivan, Chenping Xu, Wei Gao, James Slusser

Proceedings Volume 5886, 58860L (2005) https://doi.org/10.1117/12.623738

KEYWORDS: Ultraviolet radiation, Radiation effects, Ozone, Solar radiation, Absorbance, Proteins, Photosynthesis, Ecosystems, Physiology, Chemistry

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Proceedings Article | 1 September 2005 Paper

An analysis of seasonal and interannual variability of LAI during 1982 to 2004

Qifeng Lu, Wei Gao, Zhiqiang Gao, Wanli Wu, Xiaoling Pan, Bingyu Du, James Slusser

Proceedings Volume 5884, 58840U (2005) https://doi.org/10.1117/12.612983

KEYWORDS: MODIS, Vegetation, Climatology, Reflectivity, Soil science, Data modeling, Environmental sensing, Error analysis, Atmospheric monitoring, Atmospheric sciences

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Proceedings Article | 1 September 2005 Paper

Preliminary results of the coupled CWRF-GOSSYM system

Min Xu, Xin-Zhong Liang, Wei Gao, K. Raja Reddy, James Slusser, Kenneth Kunkel

Proceedings Volume 5884, 588409 (2005) https://doi.org/10.1117/12.621017

KEYWORDS: Solar radiation models, Climatology, Soil science, Data modeling, Solar radiation, Agriculture, Vegetation, Nitrogen, Meteorology, Performance modeling

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Proceedings Article | 1 September 2005 Paper

Construction of surface boundary conditions for regional climate modeling in China by using the remote sensing data

Wei Gao, Zhiqiang Gao, Hyun Choi, Min Xu, James Slusser

Proceedings Volume 5884, 588413 (2005) https://doi.org/10.1117/12.620149

KEYWORDS: Climatology, Data modeling, Remote sensing, Climate change, Environmental sensing, Vegetation, Ecosystems, Agriculture, Satellites, Geographic information systems

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The continuing rise in atmospheric CO2 is considered as a main cause of the future changes in global climate. Predicted climate changes include an increase in mean annual air temperature and alterations in precipitation pattern and cloud cover. Elevated atmospheric CO₂ and climate changes are expected to influence the ecosystems. The regional climate models (RCMs) will likely remain primary tools for climate prediction in the foreseeable future. The importance of RCMs is increasing in addressing scientific problems associated with climate variability, changes, and impacts at regional scales. The RCMs have been also used in climate impact studies on ecosystems, especially in agricultural crops by generating climate scenarios for input to crop models. With a large volume of satellite remote sensing data of the earth terrestrial surface becoming available, precisely monitoring the dynamics of the land surface state variables for agricultural and land use management becomes possible6. With the effort to study the climate crop interactions we plan to use a CWRF model (a climate extension of the Weather Research and Forecasting model-WRF) developed by the Illinois State Water Survey to form the climate scenarios. The WRF model is based upon the most advanced supercomputing technologies and promises greater efficiency in computation and flexibility in new module incorporation. This extension inclusively incorporates all WRF functionalities for numerical weather predictions while enhancing the capability for climate applications. To represent the surface-atmosphere interactions the CWRF requires specification of surface boundary conditions (SBCs) over both land and oceans. A comprehensive set of SBCs based on best observational data is desired for CWRF general applications for all effective, dynamically coupled or uncoupled, combinations of the surface modules, as well as for any specific region of the world. This report followed the approach of Liang et al. presents a preliminary work to construct vegetative SBCs for the CWRF modeling effort in China domain by using remote sensing data from TM, AVHRR, MODIS which are freely available. The full list of the CWRF SBCs was defined by Liang.

Proceedings Article | 1 September 2005 Paper

Simulations of a rainfall process in Southeastern China with WRF and MM5

Qifeng Lu, Wei Gao, Zhiqiang Gao, Wanli Wu, Xiaoling Pan, Dajun Wang, Bingyu Du, James Slusser

Proceedings Volume 5884, 58840T (2005) https://doi.org/10.1117/12.612982

KEYWORDS: Data modeling, Atmospheric modeling, Climatology, Computer simulations, Error analysis, Coastal modeling, Device simulation, Physics, Atmospheric monitoring, Atmospheric sciences

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Proceedings Article | 1 September 2005 Paper

The response of leaf area index to climate change during 1981-2000 in China

Zhiqiang Gao, Wei Gao, James Slusser

Proceedings Volume 5884, 58840S (2005) https://doi.org/10.1117/12.612929

KEYWORDS: Climate change, Climatology, Temperature metrology, Vegetation, Databases, Spatial resolution, Radiometry, Lead, Meteorology, Ecology

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Proceedings Article | 18 August 2005 Paper

Characterization and error analysis of an operational retrieval algorithm for estimating column ozone and aerosol properties from ground-based ultra-violet irradiance measurements

Thomas Taylor, Tristan L'Ecuyer, James Slusser, Graeme Stephens, Nick Krotkov, John Davis, Christian Goering

Proceedings Volume 5886, 58860Y (2005) https://doi.org/10.1117/12.628877

KEYWORDS: Atmospheric modeling, Error analysis, Aerosols, Ultraviolet radiation, Ozone, Radiative transfer, Climatology, Diagnostics, Algorithm development, Clouds

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Proceedings Article | 18 August 2005 Paper

The measurement and modeling of broadband UV-A irradiance

Richard Grant, James Slusser

Proceedings Volume 5886, 58860C (2005) https://doi.org/10.1117/12.613318

KEYWORDS: Sensors, Atmospheric modeling, Calibration, Error analysis, Head, Aerosols, Solar radiation models, Ultraviolet radiation, Clouds, Humidity

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Proceedings Article | 1 June 2005 Paper

Atmospheric correction validation and refinement using ground-based radiometry at Davis, CA

P. Rochford, P. Acharya, S. Adler-Golden, A. Berk, L. Bernstein, M. Matthew, S. Richtsmeier, S. Gulick, J. Slusser

Proceedings Volume 5806, (2005) https://doi.org/10.1117/12.603931

KEYWORDS: Visibility, Aerosols, Atmospheric corrections, Reflectivity, Atmospheric modeling, Radiometry, Calibration, Atmospheric particles, Earth observing sensors, Landsat

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SPIE Journal Paper | 1 April 2005

Comparison of ultraviolet data from colocated instruments from the U.S. EPA Brewer Spectrophotometer Network and the U.S. Department of Agriculture UV-B Monitoring and Research Program

Michael Kimlin, James Slusser, Kathryn Schallhorn, Kathleen Lantz, Richard Meltzer

OE, Vol. 44, Issue 04, 041009, (April 2005) https://doi.org/10.1117/12.10.1117/1.1885470

KEYWORDS: Ultraviolet radiation, Ozone, Calibration, Radiometry, Optical engineering, Spectrophotometry, Agriculture, Error analysis, Deep ultraviolet, Lamps

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SPIE Journal Paper | 1 April 2005

Mesoscale distributions of ultraviolet spectral irradiance, actinic flux, and photolysis rates derived from multispectral satellite data and radiative transfer models

Melanie Wetzel, James Slusser

OE, Vol. 44, Issue 04, 041006, (April 2005) https://doi.org/10.1117/12.10.1117/1.1889467

KEYWORDS: Clouds, Ultraviolet radiation, Satellites, Data modeling, Photolysis, Ozone, Atmospheric modeling, Radiative transfer, Reflectivity, Visible radiation

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SPIE Journal Paper | 1 April 2005

Aerosol ultraviolet absorption experiment (2002 to 2004), part 2: absorption optical thickness, refractive index, and single scattering albedo

Nickolay Krotkov, Pawan Bhartia, Jay Herman, James Slusser, Gwendolyn Scott, Gordon Labow, Alexander Vasilkov, Tom Eck, Oleg Doubovik, Brent Holben

OE, Vol. 44, Issue 04, 041005, (April 2005) https://doi.org/10.1117/12.10.1117/1.1886819

KEYWORDS: Aerosols, Ultraviolet radiation, Absorption, Refractive index, Atmospheric modeling, Ozone, Atmospheric particles, Calibration, Visible radiation, Scattering

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SPIE Journal Paper | 1 April 2005

Aerosol ultraviolet absorption experiment (2002 to 2004), part 1: ultraviolet multifilter rotating shadowband radiometer calibration and intercomparison with CIMEL sunphotometers

Nickolay Krotkov, Pawan Bhartia, Jay Herman, James Slusser, Gordon Labow, Gwendolyn Scott, George Janson, Tom Eck, Brent Holben

OE, Vol. 44, Issue 04, 041004, (April 2005) https://doi.org/10.1117/12.10.1117/1.1886818

KEYWORDS: Calibration, Aerosols, Ultraviolet radiation, Absorption, Ozone, Diffusers, Atmospheric modeling, Atmospheric optics, Sun, Radiometry

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SPIE Journal Paper | 1 April 2005 Open Access

Editorial: Advances in UV Ground- and Space-based Measurements and Modeling II

James Slusser, Wei Gao, Jay Herman

OE, Vol. 44, Issue 04, 041001, (April 2005) https://doi.org/10.1117/12.10.1117/1.1885026

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Proceedings Article | 9 November 2004 Paper

New land surface albedo parameterization based on MODIS data: preliminary result

Xin-Zhong Liang, Min Xu, Wei Gao, Kenneth Kunkel, James Slusser, Yongjiu Dai, Qilong Min

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.563449

KEYWORDS: MODIS, Visible radiation, Vegetation, Soil science, Data modeling, Climatology, Composites, Bidirectional reflectance transmission function, Reflectivity, Optimization (mathematics)

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Proceedings Article | 9 November 2004 Paper

Analysis on impact of climate changes over the past twenty years on NPP in China

Zhiqiang Gao, Jiyuan Liu, Mingkui Cao, Qi Wang, Wei Gao, James Slusser, Xiaoling Pan

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.563614

KEYWORDS: Climatology, Climate change, Data modeling, Vegetation, Temperature metrology, Carbon, Ecosystems, Environmental sensing, Remote sensing, Process modeling

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Proceedings Article | 9 November 2004 Paper

Impacts of seasonal climate on net primary productivity (NPP) in Xinjiang, 1981-2000

Wei Gao, Zhiqiang Gao, Xiaoling Pan, James Slusser, Jiaguo Qi, Xiwu Zhan, Yingjun Ma

Proceedings Volume 5544, (2004) https://doi.org/10.1117/12.563611

KEYWORDS: Climatology, Temperature metrology, Climate change, Vegetation, Data modeling, Satellites, Environmental sensing, Ecosystems, Atmospheric modeling, Photosynthesis

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Proceedings Article | 14 October 2004 Paper

Impact of clouds with limited horizontal extent on UV radiation measurements

John Davis, James Slusser

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.561496

KEYWORDS: Clouds, Atmospheric modeling, Ultraviolet radiation, Solar radiation models, Aerosols, Ozone, Scattering, Monte Carlo methods, Radiative transfer, Absorption

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Proceedings Article | 14 October 2004 Paper

Effect of enhanced UV-B radiation combined with other climate stressors on winter wheat

Wei Gao, Youfei Zheng, James Slusser, Richard Grant

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.563465

KEYWORDS: Climatology, Lamps, Ultraviolet radiation, Head, Photosynthesis, Climate change, Soil science, Visible radiation, Ozone, Carbon monoxide

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Proceedings Article | 14 October 2004 Paper

Direct-sun column ozone from multifilter rotating shadowband radiometers compared with values retrieved from Brewer and Dobson spectrophotometers

Roger Tree, James Slusser

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.562500

KEYWORDS: Ozone, Calibration, Radiometry, Lamps, Ultraviolet radiation, Spectrophotometry, Sensors, Head, Photodiodes, Sun

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Proceedings Article | 14 October 2004 Paper

Measuring aerosol UV absorption optical thickness by combining use of shadowband and almucantar techniques

Nickolay Krotkov, Pawan Bhartia, Jay Herman, James Slusser, Gwen Scott, Gordon Labow, Alexander Vasilkov, Thomas Eck, Oleg Dubovik, Brent Holben

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.559557

KEYWORDS: Aerosols, Ultraviolet radiation, Absorption, Refractive index, Visible radiation, Scattering, Ozone, Radiometry, Calibration, Atmospheric modeling

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We report final results of an aerosol UV absorption closure experiment where a UV-shadow-band radiometer (UV-MFRSR, USDA UVB Monitoring and Research Network) and 4 rotating sun-sky radiometers (CIMEL, NASA AERONET network) were run side-by-side continuously for 17 months at NASA/GSFC site in Greenbelt, MD. The aerosol extinction optical thickness τ_ext, was measured by the CIMEL direct-sun technique in the visible and at two UV wavelengths 340 and 380 nm. These results were used for UV-MFRSR daily on-site calibration and 3-min measurements of τ_ext at 325nm, 332nm and 368nm. The τ_ext measurements were used as input to the radiative transfer model along with AERONET retrievals of the column-integrated particle size distribution (PSD)to infer an effective imaginary part of the UV aerosol refractive index, k, by fitting MFRSR measured voltage ratios. Using all cases for cloud-free days, we derive diurnal and seasonal dependence of the aerosol absorption optical thickness, τ_abs with an uncertainty 0.01-0.02. At our site τ_abs follows pronounced seasonal dependence with maximum values ~0.07 at 368nm (~0.15 at 325nm) occurring in summer hazy conditions and <0.02 in winter-fall seasons, when aerosol loadings are small. Inferred values of k allow calculation of the single scattering albedo, ω, in UVA and comparisons with AERONET almucantar ω₄₄₀ retrievals at 440nm. Overall, ω was slightly lower in UV than in the visible: case average <ω₃₆₈>=0.93 compared to <ω₄₄₀>=0.95. However, the differences (<ω₄₄₀ - ω₃₆₈> ~0.02, rms difference ~0.016) are smaller than uncertainties of both retrievals (δω~0.03). Low <ω₃₆₈> values are consistent with higher values for imaginary refractive index, k: <k₃₆₈> ~0.01 compare to <k₄₄₀> ~0.006. However, mean differences in k (<k₃₆₈-k₄₄₀>~0.004) were only slightly larger than AERONET retrieval uncertainty δk ~0.003²⁷. We also found that ω decreases with decrease in τ_ext, suggesting different aerosol composition in summer and winter months. So far, our results do not allow explaining the causes of apparent larger aerosol absorption in UV. Continuing co-located measurements at GFSC is important to improve the comparison statistics, but conducting aerosol absorption measurements at different sites with varying conditions is also desirable.

Proceedings Article | 14 October 2004 Paper

Long-term stability of UV multifilter rotating shadowband radiometers, part 2: lamp calibrations versus the Langley method

George Janson, James Slusser, Gwen Scott, Patrick Disterhoft, Kathleen Lantz

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.562491

KEYWORDS: Calibration, Lamps, Photodiodes, Ultraviolet radiation, Radiometry, Silicon, Silicon carbide, Diffusers, Databases, Agriculture

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Proceedings Article | 14 October 2004 Paper

Response of different crop growth and yield to enhanced UV-B radiation under field conditions

Youfei Zheng, Wei Gao, James Slusser, Richard Grant, Chuanhai Wang

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.563454

KEYWORDS: Ozone, Lamps, Radiation effects, Agriculture, Ultraviolet radiation, Information science, Information technology, Ecology, Carbon monoxide, Pollution control

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Proceedings Article | 14 October 2004 Paper

Effects of enhanced UV-B radiation on secondary metabolites in forage plants and potential consequences for multiple trophic responses involving mammalian herbivores

Nicole Thines, John Bassman, Lisa Shipley, James Slusser

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.563273

KEYWORDS: Lamps, Proteins, Chemistry, Ultraviolet radiation, Solar radiation, Radiation effects, Ecosystems, Ozone, Tissues, Statistical analysis

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Proceedings Article | 14 October 2004 Paper

Long-term variability in surface UV-B radiation across the United States

Jeffrey Hicke, James Slusser, Kathleen Lantz

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.560092

KEYWORDS: Calibration, Ultraviolet radiation, Ozone, Analytical research, Solar radiation, Spectral calibration, Carbon monoxide, Atmospheric particles, Aerosols, Satellites

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Proceedings Article | 22 December 2003 Paper

Responses of net primary productivity (NPP) in Xinjiang to climate changes from 1981-2000

Wei Gao, Zhiqiang Gao, Xiaoling Pan, James Slusser, Mingkui Cao, Jiaguo Qi, Jie Zhang, Xiwu Zhan, Yingjun Ma

Proceedings Volume 5153, (2003) https://doi.org/10.1117/12.511576

KEYWORDS: Climatology, Vegetation, Climate change, Satellites, Temperature metrology, Soil science, Environmental sensing, Photosynthesis, Earth observing sensors, Mathematical modeling

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Proceedings Article | 22 December 2003 Paper

Remote sensing and modeling the dynamics of soil moisture and vegetative cover of arid and semiarid areas

Xiwu Zhan, Wei Gao, Jiaguo Qi, Paul Houser, James Slusser, Xiaoling Pan, Zhiqiang Gao, Yingjun Ma

Proceedings Volume 5153, (2003) https://doi.org/10.1117/12.505670

KEYWORDS: Data modeling, Satellites, Remote sensing, Vegetation, Soil science, MODIS, Systems modeling, Agriculture, Satellite imaging, Earth observing sensors

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Proceedings Article | 4 November 2003 Paper

Goddard UV aerosol absorption closure experiment (2002-03)

Nickolay Krotkov, Pawan Bhartia, Jay Herman, James Slusser, Gwendolyn Scott, Gordon Labow, Alexander Vasilkov, Tom Eck, Oleg Dubovik, Brent Holben

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.508967

KEYWORDS: Aerosols, Ultraviolet radiation, Refractive index, Clouds, Absorption, Atmospheric modeling, Scattering, Calibration, Atmospheric particles, Radiometry

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Proceedings Article | 4 November 2003 Paper

Comparison of UV synthetic spectra with broadband and spectral irradiances

James Slusser, Dennis Bigelow, Wei Gao, Gwendolyn Scott, Becky Olson

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.511736

KEYWORDS: Ultraviolet radiation, Radiometry, Calibration, Ozone, Optical filters, Atmospheric modeling, Optoelectronics, Data modeling, Sensors, Spectral calibration

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Proceedings Article | 4 November 2003 Paper

Mesoscale distributions of UV spectral irradiance obtained by merging satellite remote sensing and ground-based measurements

Melanie Wetzel, James Slusser

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.508654

KEYWORDS: Ultraviolet radiation, Clouds, Satellites, Data modeling, Reflectivity, Atmospheric modeling, Visible radiation, Ozone, Remote sensing, Radiative transfer

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Proceedings Article | 4 November 2003 Paper

Defining the probabilities of solar UV event exposures for plant effects research

Richard Grant, James Slusser

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.504866

KEYWORDS: Ultraviolet radiation, Ozone, Clouds, Error analysis, Solar radiation, Sensors, Calibration, Statistical analysis, Solids, Climatology

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Proceedings Article | 4 November 2003 Paper

Initial impacts of altered UVB radiation on plant growth and decomposition in shortgrass steppe

Jennifer King, Daniel Milchunas, Arvin Mosier, John Moore, Meghan Quirk, Jack Morgan, James Slusser

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.508606

KEYWORDS: Ultraviolet radiation, Tissues, Chemical analysis, Radiation effects, Ecosystems, Statistical analysis, Carbon monoxide, Biological research, Biology, Organisms

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Proceedings Article | 4 November 2003 Paper

Long-term stability of UV multifilter rotating shadowband radiometers

George Janson, James Slusser

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.508195

KEYWORDS: Ultraviolet radiation, Radiometry, Calibration, Sun, Lamps, Visible radiation, Photodiodes, Statistical analysis, Databases, Data modeling

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Proceedings Article | 4 November 2003 Paper

U.S. EPA Brewer spectrophotometer network and the USDA UVB monitoring and research program: data comparison from co-located instruments

Michael Kimlin, James Slusser, Kathryn Schallhorn, Richard Meltzer

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.505752

KEYWORDS: Ultraviolet radiation, Calibration, Spectrophotometry, Lamps, Broadband telecommunications, Error analysis, Ozone, Climatology, Deep ultraviolet, Diffusers

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Proceedings Article | 4 November 2003 Paper

Impact of enhanced ultraviolet-B irradiance on maize yield formation and structure: a field evaluation

Wei Gao, Youfei Zheng, James Slusser, Yuhong He, Ronggang Zhang

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.509422

KEYWORDS: Ear, Radiation effects, Lamps, Ozone, Ultraviolet radiation, Meteorology, Agriculture, Electromagnetism, Macromolecules, Proteins

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Proceedings Article | 14 July 2003 Paper

The sensitivity of NPP to climate controls in northern China estimated by CLM model coupled with RS and GIS technology

Zhiqiang Gao, Wei Gao, James Slusser, Xiaoling Pan, Yingjun Ma

Proceedings Volume 4890, (2003) https://doi.org/10.1117/12.465503

KEYWORDS: Climatology, Control systems, Climate change, Vegetation, Remote sensing, Temperature metrology, Data modeling, Environmental sensing, Atmospheric modeling, Geographic information systems

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Proceedings Article | 14 July 2003 Paper

Sustainability of vegetation over northwest China:I. Climate response to grassland

Xin-Zhong Liang, Wei Gao, Kenneth Kunkel, James Slusser, Xiaoling Pan, Heng Liu, Yingjun Ma

Proceedings Volume 4890, (2003) https://doi.org/10.1117/12.466845

KEYWORDS: Climatology, Vegetation, Climate change, Clouds, Soil science, Temperature metrology, Ecosystems, Atmospheric modeling, Lutetium, Shortwaves

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Proceedings Article | 14 July 2003 Paper

The responses of net primary production (NPP) to different climate scenarios with Biome-BGC model in oasis areas along the Tianshan Mountains in Xinjiang, China

Wei Gao, Zhiqiang Gao, James Slusser, Xiaoling Pan, Yingjun Ma

Proceedings Volume 4890, (2003) https://doi.org/10.1117/12.466876

KEYWORDS: Ecosystems, Climatology, Atmospheric modeling, Vegetation, Solar radiation models, Agriculture, Climate change, Carbon monoxide, Carbon, Data modeling

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Proceedings Article | 1 July 2003 Paper

Responses of winter wheat growth and production under subambient UV-B irradiance

Chuanhai Wang, Youfei Zheng, Wei Gao, James Slusser, Douliang He

Proceedings Volume 4896, (2003) https://doi.org/10.1117/12.466172

KEYWORDS: Ear, Agriculture, Reflectivity, Meteorology, Ecosystems, Ozone, Ultraviolet radiation, Ecology, Electromagnetism, Macromolecules

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Proceedings Article | 1 July 2003 Paper

Solar ultraviolet-B radiation in urban environments: Baltimore, Maryland

Gordon Heisler, Richard Grant, Wei Gao, James Slusser, Corinne Ehrlich

Proceedings Volume 4896, (2003) https://doi.org/10.1117/12.466229

KEYWORDS: Ozone, Calibration, Solar radiation, Ecosystems, Ultraviolet radiation, Aerosols, Sensors, Agriculture, Pollution, Environmental monitoring

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Proceedings Article | 1 July 2003 Paper

Growth analytic simulation of soybean and winter wheat crops under different doses of UV-B irradiance

Youfei Zheng, Wei Gao, James Slusser, Yuhong He, Richard Grant

Proceedings Volume 4896, (2003) https://doi.org/10.1117/12.466190

KEYWORDS: Data modeling, Lamps, Ozone, Meteorology, Statistical modeling, Radiotherapy, Analytical research, Ecology, Earth's atmosphere, Agriculture

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Proceedings Article | 1 July 2003 Paper

Spatial correlations of daily and weekly maximum day exposure of solar UV radiation in the continental United States

Richard Grant, James Slusser

Proceedings Volume 4896, (2003) https://doi.org/10.1117/12.466118

KEYWORDS: Ultraviolet radiation, Ozone, Clouds, Radiation effects, Climatology, Solar radiation, Radiometry, Aerosols, Translucency, Satellites

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Proceedings Article | 1 July 2003 Paper

Impact of enhanced ultraviolet-B irradiance on maize yield and its seed qualities: a field evaluation

Wei Gao, Youfei Zheng, James Slusser, Gordon Heisler, Douliang He, Jianqiang Xu

Proceedings Volume 4896, (2003) https://doi.org/10.1117/12.466201

KEYWORDS: Radiation effects, Lamps, Ultraviolet radiation, Proteins, Ozone, Photosynthesis, Ear, Meteorology, Ecosystems, Ecology

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Proceedings Article | 1 July 2003 Paper

Short-term responses of barley to changes in ambient levels of UV-B radiation and their role in UV protection

Joseph Sullivan, Dennis Gitz, Ann Stapleton, Wei Gao, James Slusser

Proceedings Volume 4896, (2003) https://doi.org/10.1117/12.466182

KEYWORDS: Ozone, Ultraviolet radiation, Absorbance, Atmospheric modeling, Clouds, Tissues, Spectrophotometry, Biological research, Ecology, Carbon monoxide

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SPIE Journal Paper | 1 December 2002 Open Access

Advances in UV Ground- and Space-based Measurements and Modeling

James Slusser, Richard McKenzie, Wei Gao

OE, Vol. 41, Issue 12, (December 2002) https://doi.org/10.1117/12.10.1117/1.1527931

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Proceedings Article | 17 January 2002 Paper

Comparisons of USDA UV shadow-band irradiance measurements with TOMS satellite and DISORT model retrievels under all sky conditions

James Slusser, Nickolay Krotkov, Wei Gao, Jay Herman, Gordon Labow, Gwen Scott

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452954

KEYWORDS: Aerosols, Ultraviolet radiation, Clouds, Atmospheric modeling, Satellites, Ozone, Radiometry, Calibration, Signal attenuation, Head

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Proceedings Article | 17 January 2002 Paper

Impact of enhanced ultraviolet-B irradiance on cotton yield and qualities

Wei Gao, Youfei Zheng, James Slusser, Gordon Heisler

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452941

KEYWORDS: Lamps, Agriculture, Ultraviolet radiation, Ozone, Environmental monitoring, Meteorology, Magnesium, Atmospheric monitoring, Atmospheric sciences, Climate change

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Proceedings Article | 17 January 2002 Paper

Comparisons of UV synthetic spectra retrieved from the USDA UV multifilter rotating shadowband radiometer with collocated USDA reference UV spectroradiometer and NIWA UV spectroradiometer

Wei Gao, James Slusser, Lee Harrison, Patrick Disterhoft, Qilong Min, Becky Olson, Kathleen Lantz, Bill Davis

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452944

KEYWORDS: Ultraviolet radiation, Atmospheric modeling, Radiometry, Calibration, Sensors, Ozone, Data modeling, Monochromators, Lamps, Environmental monitoring

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Proceedings Article | 17 January 2002 Paper

Yield and yield formation of winter wheat in response to enhanced solar ultraviolet-B radiation

Youfei Zheng, Wei Gao, James Slusser, Richard Grant, Chuanhai Wang

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452936

KEYWORDS: Lamps, Ear, Solar radiation, Ultraviolet radiation, Photosynthesis, Ozone, Agriculture, Environmental monitoring, Meteorology, Ecosystems

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Proceedings Article | 17 January 2002 Paper

Measurements of aerosol optical depths in the UV-A: a comparison between a USDA Yankee Environmental Systems UV-multifilter rotating shadowband radiometer and an EPA Brewer spectrophotometer

Jeral Estupinan, Michael Bergin, James Slusser, Richard Meltzer

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452921

KEYWORDS: Aerosols, Ultraviolet radiation, Atmospheric optics, Atmospheric particles, Spectrophotometry, UV optics, Atmospheric modeling, Photon counting, Radio optics, Radiometry

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Proceedings Article | 17 January 2002 Paper

Modeling ultraviolet-B radiation in a maize canopy

Wei Gao, Richard Grant, Gordon Heisler, James Slusser

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452943

KEYWORDS: 3D modeling, Transmittance, Solar radiation models, Sensors, Sun, Ozone, Solar radiation, Ultraviolet radiation, Scattering, Photography

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Proceedings Article | 2 November 1993 Paper

Comparison of stratospheric ozone variations in the Arctic and Antarctic during solar proton events

Elena Kasatkina, Oleg Shumilov, Oleg Raspopov, Kjell Henriksen, Stanislav Fisher, James Slusser

Proceedings Volume 2047, (1993) https://doi.org/10.1117/12.163467

KEYWORDS: Ozone, Neodymium, Chromium, Lithium, Observatories, Adaptive optics, Optical character recognition, Fourier transforms, Aerosols, Chemical reactions

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Showing 5 of 76 publications

Proceedings Volume Editor (8)

SPIE Conference Volume | 3 October 2007

Remote Sensing of Clouds and the Atmosphere XII

SPIE Conference Volume | 29 September 2006

Remote Sensing of Clouds and the Atmosphere XI

SPIE Conference Volume | 29 October 2005

Remote Sensing of Clouds and the Atmosphere X

SPIE Conference Volume | 18 August 2005

Ultraviolet Ground- and Space-based Measurements, Models, and Effects V

SPIE Conference Volume | 14 October 2004

Ultraviolet Ground- and Space-based Measurements, Models, and Effects IV

Showing 5 of 8 publications

Conference Committee Involvement (17)

Remote Sensing of Clouds and the Atmosphere XIV

31 August 2009 | Berlin, Germany

Remote Sensing of Clouds and the Atmosphere XIII

15 September 2008 | Cardiff, Wales, United Kingdom

Remote Sensing and Modeling of Ecosystems for Sustainability V

13 August 2008 | San Diego, California, United States

Remote Sensing of Clouds and the Atmosphere

17 September 2007 | Florence, Italy

Remote Sensing and Modeling of Ecosystems for Sustainability IV

28 August 2007 | San Diego, California, United States

Remote Sensing of Clouds and the Atmosphere XI

11 September 2006 | Stockholm, Sweden

Remote Sensing and Modeling of Ecosystems for Sustainability III

14 August 2006 | San Diego, California, United States

Remote Sensing of Clouds and the Atmosphere X

19 September 2005 | Bruges, Belgium

Remote Sensing and Modeling of Ecosystems for Sustainability II

2 August 2005 | San Diego, California, United States

Ultraviolet Ground- and Space-based Measurements, Models, and Effects V

31 July 2005 | San Diego, California, United States

Ultraviolet Ground- and Space-based Measurements, Models, and Effects IV

5 August 2004 | Denver, Colorado, United States

Remote Sensing and Modeling of Ecosystems for Sustainability

2 August 2004 | Denver, Colorado, United States

Ecosystems Dynamics, Agricultural Remote Sensing and Modeling, and Site-Specific Agriculture

7 August 2003 | San Diego, California, United States

Ultraviolet Ground- and Space-based Measurements, Models, and Effects III

4 August 2003 | San Diego, California, United States

Ultraviolet Ground- and Space-based Measurements, Models, and Effects II

25 October 2002 | Hangzhou, China

Symposium Committees

21 October 2002 | Hangzhou, China

Ultraviolet Ground- and Space-based Measurements, Models, and Effects

30 July 2001 | San Diego, CA, United States

Showing 5 of 17 Conference Committees

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