SIMULATION OF SPATIO-TEMPORAL DISTRIBUTION CHARACTERISTICS AND RADIATIVE FORCING OF ORGANIC CARBON AEROSOLS IN CHINA

SU Xing-tao; WANG Han-jie; ZHOU Lin

Abstract:

The International Centre for Theoretical Physics (ICTP, Italy) Regional Climate Model version 3.0 (RegCM3) is used to simulate spatio-temporal distribution characteristics and radiative forcing (RF) of organic carbon (OC) aerosols in and around China. The preliminary simulation results show that OC aerosols are mostly concentrated in the area to the south of Yellow River and east of Tibetan Plateau. There is a decreasing trend of column burden of OC aerosols from south to north in China. The maximum value of column burden of OC aerosols is above 3 mg/m2 and located in the central and southern China, southeastern Tibet, and southwestern China’s Yunnan, Guizhou, Sichuan provinces. The simulation on the seasonal variation shows that the maximum value of column burden of OC aerosols appears in winter and the secondary value is in spring and the minimum in summer. The RF of OC aerosols which varies seasonally is negative at the top of the atmosphere (TOA) and surface. The spatio-temporal characteristics of the RF of OC aerosols are basically consistent with that of IPCC, implying the high accuracy of the parameterization scheme for OC aerosols in RegCM3.

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SU Xing-tao, WANG Han-jie, ZHOU Lin. SIMULATION OF SPATIO-TEMPORAL DISTRIBUTION CHARACTERISTICS AND RADIATIVE FORCING OF ORGANIC CARBON AEROSOLS IN CHINA [J]. Journal of Tropical Meteorology, 2012, 18(3): 297-304.

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SIMULATION OF SPATIO-TEMPORAL DISTRIBUTION CHARACTERISTICS AND RADIATIVE FORCING OF ORGANIC CARBON AEROSOLS IN CHINA

Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101 China

Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Chinese Academy of Science, Beijing 100029 China

Received Date: 2010-09-28

Rev Recd Date: 2012-07-15

Abstract: The International Centre for Theoretical Physics (ICTP, Italy) Regional Climate Model version 3.0 (RegCM3) is used to simulate spatio-temporal distribution characteristics and radiative forcing (RF) of organic carbon (OC) aerosols in and around China. The preliminary simulation results show that OC aerosols are mostly concentrated in the area to the south of Yellow River and east of Tibetan Plateau. There is a decreasing trend of column burden of OC aerosols from south to north in China. The maximum value of column burden of OC aerosols is above 3 mg/m2 and located in the central and southern China, southeastern Tibet, and southwestern China’s Yunnan, Guizhou, Sichuan provinces. The simulation on the seasonal variation shows that the maximum value of column burden of OC aerosols appears in winter and the secondary value is in spring and the minimum in summer. The RF of OC aerosols which varies seasonally is negative at the top of the atmosphere (TOA) and surface. The spatio-temporal characteristics of the RF of OC aerosols are basically consistent with that of IPCC, implying the high accuracy of the parameterization scheme for OC aerosols in RegCM3.

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SIMULATION OF SPATIO-TEMPORAL DISTRIBUTION CHARACTERISTICS AND RADIATIVE FORCING OF ORGANIC CARBON AEROSOLS IN CHINA

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