报告题目：Contribution of satellite observations to studies of aerosols and their impacts
Dr. Isabelle Chiapello
Laboratoire d’Optique Atmospherique, CNRS/Université Lille 1 Sciences et Technologies
Villeneuve d’Ascq, France.
报告摘要：Tropospheric aerosols include different types of particles both of natural (sea-salt, mineral dust), and anthropogenic origin (sulfates, organicis compounds). Aerosol concentrations, physical and chemical properties strongly vary from a region to another, leading to complex environmental impacts, especially on air quality degradation and climate.
Activities presented here rely on analysis of aerosol satellite observations in order to improve our knowledge of the evolution of their contents, properties and impacts. Indeed, spatial observations dedicated to aerosol studies have made considerable progress, since the first algorithms developed in the 1980s, until those dedicated to the sensors of the A-Train program, constellation of five French-American satellites launched during the 2000s for Earth observation. In parallel, aerosol ground-based measurements from the photometers of the AERONET/PHOTONS network play a key role in the evaluation and analysis of the increasing number of aerosol satellite products. Three main applications are presented:
(i) a regional analysis of the observations of two satellite sensors of the A-Train (POLDER-3/PARASOL and OMI/AURA) which allow innovative retrievals of aerosol properties, size and absorption, in the context of the AMMA (African Monsoon Multidisciplinary Analysis) project in West Africa.
(ii) Satellite observations as a promising tool to monitor long-term evolution of aerosol. In this purpose, over the period 1979-2000, two historical data set of satellite observations from TOMS and METEOSAT/VIS have been combined to record the year-to-year evolution of desert dust over the north tropical Atlantic
(iii) The first application of POLDER-2 and POLDER-3 aerosol retrievals to pollution studies, especially in the region of West Europe.

Aerosols remote sensing - recent results from Laboratoire d'Optique Atmosphérique
Prof.  Philippe Goloub
Laboratoire d’Optique Atmospherique, CNRS/Université Lille 1 Sciences et Technologies
Villeneuve d’Ascq, France.
报告摘要：For several decades Laboratoire d'Optique Atmospherique / Université de Lille - CNRS  is involved in the field of aerosol characterization and analysis from ground-based (AERONET), airborne and satellite (POLDER 1 to PARASOL, MODIS) observations. This synthetic presentation will overview the recent research/development performed in LOA  as well as future activities.

报告时间：2011年5月12日（星期四）上午， 9：30—11：30
报告地点：实验楼912会议室