摘要
利用卫星遥感的臭氧监测仪(OMI)数据对比分析了京津冀地区在亚太经合组织领导人会议(APEC)前、APEC期间和APEC后的吸收性气溶胶的光学特性时空分布特征及北京地区历史同期气溶胶光学特性的变化.结果表明,与APEC前、后相比,京津冀地区APEC期间气溶胶指数(AI)、气溶胶光学厚度(AOD)、吸收性气溶胶光学厚度(AAOD)都有所减小,气溶胶单次散射反照率(ASSA)有所增加;北京地区相比于APEC前,APEC期间AI减少了10%,AOD减少了49%,AAOD减少了30%,ASSA变化不大;相对于APEC后,AI减少了21%,AOD减少了23%,AAOD减少了50%,ASSA增加了4%.表明APEC期间京津冀地区的吸收性气溶胶排放减少,北京地区的减少幅度更大.与历史同期(2004-2014年)相比,北京地区在同时间段的AI、AOD、AAOD、ASSA随年份的变化规律表现不明显.
Ozone monitoring instrument（OMI） data were used to analyze the optical properties of absorbing aerosols in the Jing-Jin-Ji region in the period before,during and after the Asia-Pacific Economic Cooperation（APEC） forum and to obtain the respective value of the three periods in the past decade in Beijing.The results showed that compared with pre-APEC and post-APEC period,aerosol index（AI）,aerosol optical depth（AOD） and absorbing aerosol optical depth（AAOD） simultaneously decreased during APEC in Jing-Jin-Ji region and aerosol single scattering albedo（ASSA） increased.During APEC period in 2014,AI,AOD,AAOD in Beijing during APEC decreased by 10%,49%and 30%respectively compared with the pre-APEC period while,ASSA change little.Compared with post-APEC,AI,AOD,AAOD during the APEC forum decreased by 21%,23%and 50%,respectively,and ASSA increased by 4%.All the results indicated the reduction of absorbing aerosols in APEC period in Jing-Jin-Ji region,and Beijing decreased much more.Comparing the respective value of the same three periods in the past decade in Beijing led to the conclusion that the variance of AI,AOD,AAOD and ASS A was without rhyme and random to some extent.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第1期93-100,共8页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金项目(41305026)
中央高校基本科研业务费专项资金项目(LZUJBKY-2015-1)
关键词
臭氧监测仪
亚太经合组织领导人会议
吸收性气溶胶
京津冀
ozone monitoring instrument
Asia-Pacific economic cooperation
absorbing aerosol
Jing-JinJi region
