• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric chemistry and physics >Satellite observations and model simulations of tropospheric NO2 columns over south-eastern Europe
【24h】

Satellite observations and model simulations of tropospheric NO2 columns over south-eastern Europe

机译：东南欧对流层NO2柱的卫星观测和模型模拟

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Satellite observations of nitrogen dioxide (NO2) tropospheric columns over south-eastern Europe are analyzed to study the characteristics of the spatial and temporal variability of pollution in the area. The interannual variability of the tropospheric NO2 columns is presented over urban, rural and industrial locations based on measurements from four satellite instruments, GOME/ERS-2, SCIAMACHY/Envisat, OMI/Aura and GOME-2/MetOp spanning a period of over twelve years. The consistency between the different datasets over the area is investigated. Two operational algorithms for the retrieval of tropospheric NO2 are considered, the one developed jointly by the Royal Netherlands Meteorological Institute and Belgian Institute for Space Astronomy and the one developed by the University of Bremen. The tropospheric NO2 columns for the area under study have been simulated for the period 1996-2001 with the Comprehensive Air Quality Model (CAMx) and are compared with GOME measurements. Over urban and industrial locations the mean tropospheric NO2 columns range between 3 and 7.0 x 10(15) molecules/cm(2), showing a seasonal variability with a peak to peak amplitude of about 6.0 x 10(15) molecules/cm(2), while the background values over rural sites are close to 1.1 x 10(15) molecules/cm(2). Differences in the overpass time and spatial resolution of the different satellites, as well as differences in the algorithms, introduce significant differences in the estimated columns however the correlation between the different estimates is higher than 0.8. It is found that the model simulations reveal similar spatial patterns as the GOME observations, a result which is consistent with both algorithms. Although the model simulations show a mean bias of -0.1 x 10(15) molecules/cm(2) under clean conditions, the modeled temporal correlation of 0.5 is poor in absence of biogenic and biomass burning emissions.
机译：分析了东南欧对流层二氧化氮（NO2）卫星的卫星观测，以研究该区域污染的时空变化特征。根据对四个卫星仪器GOME / ERS-2，SCIAMACHY / Envisat，OMI / Aura和GOME-2 / MetOp跨十二个时期的测量结果，得出了对流层NO2柱的年际变化在城市，农村和工业位置年份。研究区域内不同数据集之间的一致性。考虑了两种用于提取对流层NO2的运算算法，一种是由荷兰皇家气象学院和比利时空间天文学研究所联合开发的算法，另一种是由不来梅大学开发的算法。使用综合空气质量模型（CAMx）对1996-2001年期间所研究区域的对流层NO2柱进行了模拟，并与GOME测量进行了比较。在城市和工业区中，平均对流层NO2柱的范围在3到7.0 x 10（15）分子/ cm（2）之间，显示出季节性变化，峰-峰幅度约为6.0 x 10（15）分子/ cm（2） ），而农村地区的背景值接近1.1 x 10（15）分子/ cm（2）。不同卫星的过桥时间和空间分辨率的差异，以及算法的差异，在估计列中引入了显着差异，但是不同估计之间的相关性高于0.8。发现模型仿真揭示了与国美观测相似的空间格局，这一结果与两种算法都一致。尽管模型仿真显示在清洁条件下的平均偏差为-0.1 x 10（15）分子/ cm（2），但是在没有生物和生物质燃烧排放的情况下，模型化的时间相关性0.5很差。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号