摘要
利用嵌套网格空气质量模式系统(NAQPMS)对2004年4月东亚边界层(距地面2km以下)臭氧进行了数值模拟,并评估了东亚边界层光化学反应的活性.结果表明:东亚春季臭氧呈带状分布,其高值区〔φ(O3)>55×10-9〕主要集中在30°N～40°N.受东亚季风气候控制,沿蒙古、中国东北以及日本一线有一强臭氧输送通道,输送通量达3×10-5mol/(m2.s).通过计算边界层O3光化学净生成率可知,光化学影响主要集中在高污染源排放地区,其与水平输送对臭氧影响的分布具有负相关性,说明光化学生成的O3可被输送至下风地区,而不仅限于局地.
The Nested Air Quality Prediction Model System （NAQPMS） was applied to simulate ozone in the boundary layer over East Asia in April 2004, and the photochemical activity in the boundary layer was assessed. The results indicated ozone content in the boundary layer over East Asia had a band distribution, with a maximum of 55×10^-9 in the region of 30°N-40°N. Due to a weak winter monsoon, the transport pathway formed along Mongolia, Northeast China and Japan, with a flux of 3×10^-5 mol/（ m^2·s）. Net ozone photochemical production showed that the effect of photochemistry on ozone formation mainly occurred in the area with great pollution; additionally, negative correlation between net ozone photochemical production and net ozone horizontal transport flux suggested that the photochemical ozone was transported to the downwind region and didn＇t exist only in the original location.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2009年第1期1-6,共6页
Research of Environmental Sciences
基金
国家重点基础研究发展计划(973)项目(2005CB422205)
关键词
边界层臭氧
嵌套网格空气质量模式系统
臭氧水平输送通道
光化学净生成率
ozone in the boundary layer
Nested Air Quality Prediction Model System （NAQPMS）
transport pathway
net ozone photochemical production
