Establishing monitoring model of Haze event with multi-satellite data and application-a case: Yangtze River Delta
Establishing monitoring model of Haze event with multi-satellite data and application-a case: Yangtze River Delta
复制标题
DOI：
10.1117/12.2073158
复制
发表时间：
2014-11
期刊：
影响因子：
--
通讯作者：
Binbin Jiang;Xiaoyu Zhang;Yong Du;D. Huang
中科院分区：
文献类型：
--
作者：
Binbin Jiang;Xiaoyu Zhang;Yong Du;D. Huang
基于550nm NPP-EDR数据中的气溶胶光学厚度(AOT)，GOCIAOT在555nm对2013年12月长三角地区突发霾事件进行探测和追踪，同时利用CDAS-NCEP/NCAR再分析风数据对迁移路径进行分析。结果表明：1)GOCIAOT(555nm)<1和NPPAOT(550nm)<1是有效的2）两流近似算法可用于反演GOCIAOT，特别是在气溶胶浓度较高的中国地区。3）结合GOCIAOT的高时间分辨率，分析长三角地区突发性霾事件的形成机制。通过CDAS-NCEP/NCAR再分析风数据诊断迁移驱动机制。4）研究认为霾形成于河北和河南省2013年12月3日，在平均风速4m/s的强西北风的作用下，雾霾于2013年12月4日迅速向长三角转移，造成该地区2013年最严重的雾霾事件。在西北风的控制下，灰霾在迁移过程中面积从7万平方公里迅速扩大到20万平方公里。研究表明，这可能成为监测长三角雾霾事件发生、迁移的可行的常规监测模式。
Based on Aerosol Optical Thickness (AOT) in the 550nm NPP-EDR data, GOCIAOT in the 555nm for detecting and tracing sudden haze event on 2013 December in the Yangtze River Delta, while CDAS-NCEP/NCAR Reanalysis wind data is utilized to analyze the migrating routine The results show that: 1)GOCIAOT (555nm)<1 and NPPAOT (550nm)<1 is an effective indictor of distinguishing the haze event.2) The two-stream approximation algorithm can be used to retrieve GOCIAOT especially in China with high concentration of aerosol.3)Combined with high-temporal resolution of GOCIAOT is utilized for analyzing the forming mechanism of a sudden outbreak of haze event in Yangtze River Delta .The migration driven mechanism is diagnosed with CDAS-NCEP/NCAR Reanalysis wind data.4)the study suggests that the haze was formed in Hebei and Henan province on December 3, 2013.Under the strong northwest wind with the average rate of 4m/s, the haze rapidly moved to the Yangtze River Delta on December 4th2013, resulting in the most serious haze event in 2013 in there. Under the northwest wind control, the haze area expanded rapidly from 70,000km2 to 200,000km2 during its migration. The research suggests that it could be a feasible routine monitoring pattern in detecting the occurrence, migration of haze events in Yangtze River Delta.