Zhang Chen-He, Zhao Tian-Liang, Wang Fu, Xu Xiang-de, Su Hang, Cheng Xing-Hong, Tan Cheng-Hao
Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Joint International Research Laboratory of Climate and Environment Change, Key Laboratory of Meteorological Disaster, Ministry of Education, Nanjing University of Information Science & Technology, Nanjing 210044, China.
State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China.
Huan Jing Ke Xue. 2017 Feb 8;38(2):476-484. doi: 10.13227/j.hjkx.201608043.
Based on the MODIS-Aqua aerosol optical depth (AOD) products from 2003 to 2014, Nighttime Lights Time data from DMSP satellites and basic meteorological data, the AOD spatial distributions of interannual and seasonal variations over three northeastern provinces of China(Liaoning, Jilin, Heilongjiang) were analyzed. It was found that there was a northeast-southwest area of high annual average AOD composed of Dalian, Shenyang, Changchun, Harbin and other cities, the 12-year average AOD value was 0.4-0.8. The low AOD occurred in the eastern and northern areas of the three northeastern provinces of China, where the forest-covering rate was high, and the 12-year average AOD value was less than 0.3. The seasonal variations of annual average AOD showed an increasing trend from spring to summer, then decreased in autumn and increased again in winter. The interannual variations of AOD over three northeastern provinces of China showed a decreasing trend in most areas, but the increasing trend occurred in the northeast-southwest region with the axis formed by Shenyang, Changchun and Harbin, revealing the polarization in recent 10 years over three northeastern provinces of China. In addition, spatial distribution of annual average AOD over three northeastern provinces of China in the years of strong and weak Western North Pacific Summer Monsoon was studied. Affected by the surface wind field, annual average AOD in weak monsoon years was higher than that in strong monsoon years.
基于2003年至2014年的中分辨率成像光谱仪-水色卫星气溶胶光学厚度（AOD）产品、国防气象卫星计划（DMSP）卫星的夜间灯光时间数据以及基本气象数据，分析了中国东北三省（辽宁、吉林、黑龙江）AOD的年际和季节变化的空间分布。研究发现，由大连、沈阳、长春、哈尔滨等城市组成了一个东北-西南走向的年平均AOD高值区，12年平均AOD值为0.4 - 0.8。中国东北三省东部和北部地区AOD值较低，这些地区森林覆盖率高，12年平均AOD值小于0.3。年平均AOD的季节变化呈现出从春季到夏季增加、秋季减少、冬季再次增加的趋势。中国东北三省AOD的年际变化在大多数地区呈下降趋势，但在以沈阳、长春和哈尔滨为轴线的东北-西南地区呈上升趋势，揭示了中国东北三省近10年的两极分化情况。此外，研究了西北太平洋夏季风强弱年份中国东北三省年平均AOD的空间分布。受地面风场影响，弱季风年份的年平均AOD高于强季风年份。
