Global Annual PM2.5 Grids from MODIS, MISR and SeaWiFS Aerosol Optical Depth (AOD), V4.GL.03 (1998-2019): All Composition PM2.5 Percent Change, 5-Year Averages : 無料・フリー素材/写真
Global Annual PM2.5 Grids from MODIS, MISR and SeaWiFS Aerosol Optical Depth (AOD), V4.GL.03 (1998-2019): All Composition PM2.5 Percent Change, 5-Year Averages / SEDACMaps
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | The Global Annual PM2.5 Grids from MODIS, MISR and SeaWiFS Aerosol Optical Depth (AOD), 1998-2019, V4.GL.03 consists of annual concentrations (micrograms per cubic meter) of all composition ground-level fine particulate matter (PM2.5). This data set combines AOD retrievals from multiple satellite algorithms including NASA MODerate resolution Imaging Spectroradiometer Collection 6.1 (MODIS C6.1), Multi-angle Imaging SpectroRadiometer Version 23 (MISRv23), MODIS Multi-Angle Implementation of Atmospheric Correction Collection 6 (MAIAC C6), and the Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) Deep Blue Version 4. The GEOS-Chem chemical transport model is used to relate this total column measure of aerosol to near-surface PM2.5 concentration. Geographically Weighted Regression (GWR) is used with global ground-based measurements from the World Health Organization (WHO) database to predict and adjust for the residual PM2.5 bias per grid cell in the initial satellite-derived values. This map represents percent change in concentrations of all composition ground-level fine particulate matter from 1998 to 2019 using 5-year averages. |
| 撮影日 | 2022-03-25 13:56:29 |
| 撮影者 | SEDACMaps |
| タグ | |
| 撮影地 |