Fig. 1
From: Nitrogen isotopes reveal high NOx emissions from arid agricultural soils in the Salton Sea Air Basin
NO2 column density was averaged from June 1, 2022, to May 31, 2023, from TROPOMI satellite data for the Salton Sea Air Basin to show the average spatial variation of NO2. Calipatria (SE) and Thermal (NW), our two sampling sites, are indicated by a yellow marker. Wind roses for Calipatria and Thermal are overlaid on the map and were created using CARB’s Meteorological Data Query Tool https://www.arb.ca.gov/aqmis2/metselect.php. The map was created in Google Earth Engine using the Sentinel-5P NRTI NO2: Near Real-Time Nitrogen Dioxide dataset; the script to access this data was modified but the original script can be found at this link: https://developers.google.com/earth-engine/datasets/catalog/COPERNICUS_S5P_NRTI_L3_NO2.
