东亚地区氮氧化物排放对北半球UTLS区域臭氧和温度的影响  

Effects of Nitrogen Oxide Emissions over East Asia on Ozone and Temperature in UTLS Region of the Northern Hemisphere

作　　者：肖娜 张健恺[1] 田文寿[1] 张诗妍 张如华 韩元元[1] XIAO Na;ZHANG Jiankai;TIAN Wenshou;ZHANG Shiyan;ZHANG Ruhua;HAN Ruanruan(Key Laboratory of Semi-Arid Climate Change,Ministry of Education,College of Atmospheric Sciences,Lanzhou University,Lanzhou 730000,Gansu,China)

机构地区：[1]兰州大学大气科学学院/半干旱气候变化教育部重点实验室,甘肃兰州730000

出　　处：《高原气象》2020年第2期402-415,共14页Plateau Meteorology

基　　金：国家自然科学基金项目(41575038,41705022,41630421);兰州大学中央高校基本科研业务费(lzujbky-2017-it16)。

摘　　要：利用臭氧监测仪(Ozone Monitoring Instrument,OMI)卫星资料和全球大气化学气候模式WACCM3,研究了东亚地区地表氮氧化物(NOx)排放增加对北半球上对流层下平流层(UTLS)区域臭氧和温度的影响。结果表明,东亚地区地表排放的NOx可以在夏、秋季输送到热带和东亚UTLS区域。在夏季,南亚高压可将东亚上空UTLS区域的NOx输送到低纬度地区。随着东亚地区地表NOx排放增加,冬季低纬度UTLS区域光化学反应增强,臭氧浓度显著增多,导致该区域增温;而中纬度UTLS区域NOx与臭氧的催化消耗反应增强,臭氧浓度显著降低,导致该区域降温。冬季UTLS区域低纬度和中高纬度之间的温度经向梯度减弱,副热带急流减弱,极区和中纬度之间的温度经向梯度增强,副极地西风急流增强,导致进入平流层的1波和2波强度明显减弱。Using the ozone Monitoring Instrument(OMI)satellite data and Whole Atmosphere Community Climate Model(WACCM3),the impact of increasing surface emissions of nitrogen oxide(NOx)in East Asia on ozone and temperature in the upper troposphere and lower stratosphere(UTLS)is investigated.Surface NOx emissions in East Asia can be transported to the tropics and East Asian UTLS region during summer and autumn.In summer,the south Asia anticyclone can transport the NOx in the East Asian UTLS region to the low latitudes.In the UTLS regions,photochemical reactions in the low latitudes are enhanced with the increase of surface NOxemissions in East Asia,resulting in an increasing in the low-latitude ozone concentration which leads to warming in the region in winter;while an intensified cyclic depleting ozone in the middle latitudes resulting in the mid-latitude ozone concentration decreasing which leads to cooling in the region in winter.The meridional gradient of temperature between low latitude and mid-high latitudes in the UTLS region weakens leading to a weakening subtropical jet.Meanwhile,the enhanced meridional gradient of temperature between polar region and middle and high latitudes leads to an enhanced mid-high latitudes westerly jet.The planetary waves entering the stratosphere are inhibited,which is mainly associated with the obviously weakening wave 1 and wave 2 at high latitude.

关 键 词：东亚地区 氮氧化物 上对流层下平流层 臭氧 

分 类 号：P421.32[天文地球—大气科学及气象学]