Radiative Forcing of SO2 and NOx： A Case Study in Beijing

• Published in: Advances in atmospheric sciences Vol. 23; no. 2; pp. 317 - 322
• Main Author: 孙治安 王晓云 曾宪宁
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Nature B.V 01.03.2006; Bureau of Meteorology Research Centre, GPO BOX 1289K, Melbourne 3001, Australia%Beijing Regional Meteorological Centre, Beijing%Nanjing University of Information Science and Technology,Nanjing,210044
• Subjects: Atmosphere; Atmospheric sciences; Boundary layers; Case studies; Nitric oxide; Radiation; Radiative transfer; Studies; Sulfur content; Sulfur dioxide; Temperature inversions; 大气污染; 强制辐射; 气体浓缩; 温室效应; gas concentration; air pollution; radiative forcing; greenhouse effect
• ISSN: 0256-1530; 1861-9533
• DOI: 10.1007/s00376-006-0317-6

A case study was performed in Beijing in 2000 to observe concentrations of SO2 and NOx in the atmosphere and to evaluate their radiative impact. It was found that the concentrations of these gases are usually high in the morning due to a temperature inversion in the boundary layer. The average concentrations obtained from the observations are much higher than those used in the McClatchey reference atmosphere. The radiative impacts of these gases are calculated using a line-by-line radiative transfer model. The results show that the radiative forcing at the surface due to SO2 is 0.0576 W m^-2 and that due to NOx is 0.0032 W m^-2. These figures are almost compatible with that due to CFC11.