Aerosols in the atmosphere, including dust and pollutants, scatters/absorbs solar radiation and change the microphysics
of clouds, thus influencing the Earth’s energy budget, climate, air quality, visibility, agriculture and water circulation.
Pollutants have also been reported to threaten the human health. The present research collaborated with the U.S. NASA
and the U.S. Aerosol Robotic Network (AERONET) is to study the aerosol characteristics in East Asia and improve the
long-distance transportation monitoring technology by analyzing the observations of aerosol characteristics in East Asia
during Distributed Regional Aerosol Gridded Observation Networks (DRAGON) Campaign (March 2012-May 2012).
The sun photometers that measure the aerosol optical characteristics were placed evenly throughout the Korean
Peninsula and concentrated in Seoul and the metropolitan area. Observation data are obtained from the DRAGON
campaign and the first year (2012) observation data (aerosol optical depth and aerosol spatial distribution) are analyzed.
Sun photometer observations, including aerosol optical depth (AOD), are utilized to validate satellite observations from
Geostationary Ocean Color Imager (GOCI) and Moderate Resolution Imaging Spectroradiometer (MODIS). Additional
analysis is performed associated with the Northeast Asia, the Korean Peninsula in particular, to determine the spatial
distribution of the aerosol.
Dietrich Althausen, Ronny Engelmann, Holger Baars, Birgit Heese, Thomas Kanitz, Mika Komppula, Eleni Giannakaki, Anne Pfüller, Ana Maria Silva, Jana Preißler, Frank Wagner, Juan Luis Rascado, Sergio Pereira, Jae-Hyun Lim, Joon Young Ahn, Matthias Tesche, Iwona Stachlewska
PollyNET is a growing global network of automatized multiwavelength polarization Raman lidars of type Polly (Althausen et al., 2009). The goal of this network is to conduct advanced remote measurements of aerosol profiles and clouds by the same type of instrument. Since 2006 this network assists the controlling and adjustment activities of Polly systems. A central facility receives the data from the Polly measurements. The observational data are displayed in terms of quicklooks at http://polly:tropos.de in near real time. In this way, the network serves as a central information platform for inquisitive scientists. PollyNET comprises permanent stations at Leipzig (Germany), Kuopio (Finland), Evora (Portugal), Baengnyeong Island (South Korea), Stockholm (Sweden), and Warsaw (Poland). Non-permanent stations have been used during several field experiments under both urban and very remote conditions - like the Amazon rainforest. These non-permanent stations were lasting from several weeks up to one year and have been located in Brazil, India, China, South Africa, Chile, and also aboard the German research vessels Polarstern and Meteor across the Atlantic. Within PollyNET the interaction and knowledge exchange is encouraged between the Polly operators. This includes maintenance support in system calibration procedures and distribution of latest hardware and software improvements. This presentation introduces the PollyNET. Main features of the Polly systems will be presented as well as recent instrumental developments. Some measurement highlights achieved within PollyNET are depicted.
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