维普中文期刊产品整合服务

Assessment of the Biospheric Contribution to Surface Atmospheric CO_2 Concentrations over East Asia with a Regional Chemical Transport Model

查看全文 作　　者：KOU [1,2]Xingxia;ZHANG [1]Meigen;PENG [3]Zhen;WANG [1]Yinghong 高影响力作者 机构地区：[1]State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences;[2]University of Chinese Academy of Sciences;[3]School of Atmospheric Sciences, Nanjing University高影响力机构 出　　处：《Advances in Atmospheric Sciences》索引2015年第32卷第3期,共14页高影响力期刊 基　　金：supported by the Strategic Priority Research Program–Climate Change: Carbon Budget and Relevant Issues (Grant No. XDA05040404);the National High Technology Research and Development Program of China (Grant No. 2013AA122002);the National Natural Science Foundation of China (Grant No. 41130528);support staff of the stations for providing their CO2 observation records on the WDCGG website 摘　　要：A regional chemical transport model, RAMS-CMAQ, was employed to assess the impacts of biosphere–atmosphere CO2 exchange on seasonal variations in atmospheric CO2 concentrations over East Asia. Simulated CO2 concentrations were compared with observations at 12 surface stations and the comparison showed they were generally in good agreement. Both observations and simulations suggested that surface CO2 over East Asia features a summertime trough due to biospheric absorption, while in some urban areas surface CO2 has a distinct summer peak, which could be attributed to the strong impact from anthropogenic emissions. Analysis of the model results indicated that biospheric fluxes and fossil-fuel emissions are comparably important in shaping spatial distributions of CO2 near the surface over East Asia. Biospheric flux plays an important role in the prevailing spatial pattern of CO2 enhancement and reduction on the synoptic scale due to the strong seasonality of biospheric CO2 flux. The elevation of CO2 levels by the biosphere during winter was found to be larger than 5ppm in North China and Southeast China, and during summertime a significant depletion( 7 ppm) occurred in most areas,except for the Indo-China Peninsula where positive bioflux values were found. 关 键 词：大气CO2浓度 输送模式 区域化学 生物圈 东亚 表面 评估 二氧化碳浓度
相关文献

参考文献(46)

引证文献(6)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费