Extensive forest fire activities occurred in May 2003 across Siberia, Russia, particularly in the area between the Amur and Lena rivers east of Lake Baikal. These forest fires released large amounts of particulates and gases into the atmosphere, resulting in adverse effects on regional air quality and radiation budget. On certain occasions, a smoke pollution plume from these forest fires was transported through Mongolia and eastern China, down to the Korean peninsula. In this study, satellite data and ground-based radiation measurement data were analyzed to estimate the smoke aerosol's impact on the local atmospheric environment over Korea. Aerosol optical depth (AOD) values retrieved using the Bremen Aerosol Retrieval method from Moderate Resolution Imaging Spectroradiometer data were compared with those derived from ground-based radiation measurements. Large AOD values in the range 2.0-4.0 were observed on 20 May 2003 over Korea due to the influence of the long-range transported smoke aerosol plume from the Russian fires, resulting in a surface-observed short-wavelength direct aerosol radiative forcing efficiency of -90 to -200 W m -2. This smoke aerosol plume also resulted in a decrease in the solar visible irradiance of up to 57%, and increased the surface PM10 concentration by up to 258 μg m -3.
Bibliographical noteFunding Information:
This work was supported in part by the Korea Science and Engineering Foundation (KOSEF) through the Advanced Environmental Monitoring Research Center (ADEMRC) at Gwangju Institute of Science and Technology (GIST), the Brain Korea 21 program from the Korea Ministry of Education and Human Resources Development, and the research project by Korea Aerospace Research Institute (KARI). The authors like to thank NASA for the use of MOD14 data. The authors thank Dr. B. Holben and PIs for Anmyun, and the Beijing AERONET site for their efforts in establishing and maintaining AERONET.
All Science Journal Classification (ASJC) codes
- Environmental Science(all)
- Atmospheric Science