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  "Comments": "<DIV STYLE=\"text-align:Left;\"><DIV><DIV><P><SPAN STYLE=\"font-weight:bold;\">Date of Images:<\/SPAN><\/P><P><SPAN>3/2/2020 - 3/6/2020; 3/9/2020 - 3/13/2020; 3/16/2020 - 3/20/2020; 3/23/2020 - 3/27/2020<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Summary:<\/SPAN><\/P><P><SPAN>Using TROPOMI Level 2 tropospheric Nitrogen Dioxide (NO2) Column Density (near real-time and offline), NASA scientists can monitor changes in pollution levels over the State of California as the state issued social distancing orders in response to the COVID-19 pandemic. These images are weekly average Level 3 product that do not use data/pixels with more than 25% cloud cover. <\/SPAN><\/P><P><SPAN>Note: The Monochromatic Images group is the same set of images but with a colorblind-friendly color bar.<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Suggested Use:<\/SPAN><\/P><P><SPAN>This product can be used to monitor pollutant concentrations at high spatial scales in cloud-free conditions<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Satellite/Sensor:<\/SPAN><\/P><P><SPAN>Tropospheric Monitoring Instrument (TROPOMI) on the European Space Agency's (ESA) Sentinel-5 precursor (Sentinel-5P) satellite<\/SPAN><\/P><P><SPAN>Resolution: 0.05 degree grid spacing<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Credits:<\/SPAN><\/P><P><SPAN>Copernicus Open Access Hub for access to TROPOMI L2 near real-time data. NASA Earthdata for access to TROPOMI L2 offline data, Aaron R. Naegor for generation of L3 data product<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>",
  "Subject": "Tropospheric Nitrogen Dioxide (NO2) Column Density (TROPOMI) in California in Response to the COVID-19 Pandemic",
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  "Keywords": "NASA Disasters Program,COVID-19,Coronavirus,California,USA,United States,TROPOMI,NO2,Air Pollution,ESA,Sentinel-5P"
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