Global 3-Year Running Mean Ground-Level Nitrogen Dioxide (NO2) Grids from GOME, SCIAMACHY and GOME-2

The Global 3-Year Running Mean Ground-Level Nitrogen Dioxide (NO2) Grids from GOME, SCIAMACHY and GOME-2 represent a series of three-year running mean grids (1996-2012) of ground level NO2 that were derived from Global Ozone Monitoring Experiment (GOME), SCanning Imaging Absorption SpectroMeter for Atmospheric CHartographY (SCIAMACHY) and Global Ozone Monitoring Experiment-2 (GOME-2) satellite retrievals. For each satellite-derived NO2 source, the relationship between satellite observations of tropospheric NO2 column densities and the NO2 concentrations at ground level relevant to human exposure is simulated, using the Goddard Earth Observing System chemical transport model (GEOS-Chem) to produce a mean NO2 concentration raster grid. The grid cell resolution is six arc-minutes (0.1 degree, or approximately 10 km at the equator) covering the global land surface.

全球三年滚动平均地面二氧化氮（NO2）网格数据集，源自GOME、SCIAMACHY及GOME-2卫星观测，涵盖了1996至2012年间的三年滚动平均NO2网格。该数据集通过模拟卫星对对流层NO2柱密度的观测与人类暴露相关的地面NO2浓度之间的关系，采用戈达德地球观测系统化学传输模型（GEOS-Chem）生成平均NO2浓度栅格网格。网格单元分辨率为六弧分（0.1度，或大致相当于赤道上的10公里），覆盖全球陆地表面。