Projected Changes in NO_x Emissions from Lightning as a Result of 2000–2050 Climate Change  

作　　者：JIANG Hui LIAO Hong 

机构地区：[1]State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry(LAPC),Institute of Atmospheric Physics, Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences

出　　处：《Atmospheric and Oceanic Science Letters》2013年第5期284-289,共6页大气和海洋科学快报（英文版）

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA05100503);the National Natural Science Foundation of China(Grant Nos.40775083,40825016,and 41021004);the China Meteorological Administration special funding inatmospheric science(Grant No.GYHY200906020)

摘　　要：Lightning is one of the most important natural sources of atmospheric NOx.The authors investigate the2000–2050 changes in NOx emissions from lightning using the global three-dimensional Goddard Earth Observing System chemical transport model(GEOS-Chem)driven by meteorological fields from the Goddard Institute for Space Studies(GISS)general circulation model(GCM)3.Projected changes in climate over 2000–2050are based on the Intergovernmental Panel on Climate Change(IPCC)A1B scenario.The global NOx emission from lightning is simulated to be 4.8 Tg N in present day and to increase by about 16.7%over 2000–2050 as a result of the future climate change.The largest present-day emissions and climate-induced changes are found in the upper troposphere in the tropics.Regionally in eastern China(20–55 N,98–125 E),NOx emissions from lighting is simulated to be 0.3 Tg N(6.3%of the global total emission)in present day and to increase by 26.7%over2000–2050.The simulated changes in NOx from lightening correspond well with the projected future changes in convective precipitation.Lightning is one of the most important natural sources of atmospheric NOx.The authors investigate the 2000-2050 changes in NOx emissions from lightning using the global three-dimensional Goddard Earth Observing System chemical transport model （GEOS-Chem） driven by meteorological fields from the Goddard Institute for Space Studies （GISS） general circulation model （GCM） 3.Projected changes in climate over 2000-2050 are based on the Intergovernmental Panel on Climate Change （IPCC） A1B scenario.The global NOx emission from lightning is simulated to be 4.8 Tg N in present day and to increase by about 16.7％ over 2000-2050 as a result of the future climate change.The largest present-day emissions and climate-induced changes are found in the upper troposphere in the tropics.Regionally in eastern China （20-55°N,98-125°E）,NOx emissions from lighting is simulated to be 0.3 Tg N （6.3％ of the global total emission） in present day and to increase by 26.7％ over 2000-2050.The simulated changes in NOx from lightening correspond well with the projected future changes in convective precipitation.

关 键 词：NOx LIGHTNING climate change 

分 类 号：P468.02[天文地球—大气科学及气象学]