Ms. Almudena Velazquez Blazquez Profile

Almudena Velazquez Blazquez

at Univ de Valencia

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Author

Publications (2)

Proceedings Article | 1 November 2005 Paper

Comparison of top of the atmosphere GERB measured radiances with independent radiative transfer simulations obtained at the Valencia Anchor Station area

A. Velazquez Blazquez, S. Alonso, A. Bodas-Salcedo, S. Dewitte, C. Domenech, J. Gimeno, J. Harries, J. Jorge Sanchez, A. Labajo, N. Loeb, D. Pino, A. Sanchis, G. Smith, Z. P. Szewczyk, R. Tarruella, J. Torrobella, E. Lopez-Baeza

Proceedings Volume 5979, 59790H (2005) https://doi.org/10.1117/12.627705

KEYWORDS: Radiative transfer, Satellites, Global Positioning System, Bidirectional reflectance transmission function, Spatial resolution, Shortwaves, Earth's atmosphere, Anisotropy, Meteorology, Near infrared

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Proceedings Article | 16 February 2004 Paper

SCALES: SEVIRI and GERB CaL/VaL area for large-scale field experiments

Ernesto Lopez-Baeza, Fernando Belda, Alejandro Bodas, Dominique Crommelynck, Steven Dewitte, Carlos Domenech, Jaume Gimeno, John Harries, Joan Jorge Sanchez, Nicolau Pineda, David Pino, Antonio Rius, Kauzar Saleh, Ramon Tarruella, Almudena Velazquez

Proceedings Volume 5235, (2004) https://doi.org/10.1117/12.513425

KEYWORDS: Satellites, Aerosols, LIDAR, Atmospheric modeling, Meteorology, Data modeling, Algorithm development, Atmospheric optics, Sensors, Remote sensing

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The main objective of the SCALES Project is to exploit the unique opportunity offered by the recent launch of the first European METEOSAT Second Generation geostationary satellite (MSG-1) to generate and validate new radiation budget and cloud products provided by the GERB (Geostationary Earth Radiation Budget) instrument. SCALES’ specific objectives are: (i) definition and characterization of a large reasonably homogeneous area compatible to GERB pixel size (around 50 x 50 km²), (ii) validation of GERB TOA radiances and fluxes derived by means of angular distribution models, (iii) development of algorithms to estimate surface net radiation from GERB TOA measurements, and (iv) development of accurate methodologies to measure radiation flux divergence and analyze its influence on the thermal regime and dynamics of the atmosphere, also using GERB data. SCALES is highly innovative: it focuses on a new and unique space instrument and develops a new specific validation methodology for low resolution sensors that is based on the use of a robust reference meteorological station (Valencia Anchor Station) around which 3D high resolution meteorological fields are obtained from the MM5 Meteorological Model. During the 1st GERB Ground Validation Campaign (18th-24th June, 2003), CERES instruments on Aqua and Terra provided additional radiance measurements to support validation efforts. CERES instruments operated in the PAPS mode (Programmable Azimuth Plane Scanning) focusing the station. Ground measurements were taken by lidar, sun photometer, GPS precipitable water content, radiosounding ascents, Anchor Station operational meteorological measurements at 2m and 15m., 4 radiation components at 2m, and mobile stations to characterize a large area. In addition, measurements during LANDSAT overpasses on June 14th and 30th were also performed. These activities were carried out within the GIST (GERB International Science Team) framework, during GERB Commissioning Period.

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