This is the supplemental data for the paper entitled "Estimation of methane emissions from the U.S. ammonia fertilizer industry using a mobile sensing approach"

1) Ammonia fertilizer plant (CH4 and GPS).zip: is the time series of above-ambient methane mixing ratios and GPS collected by the Google Street View (GSV) car near the visited ammonia fertilizer plants.

2) Wind statistics.xlsx: report the wind statistics collected by a small meteorological tower establised near the visited ammonia fertilizer plants.

3) Example plume measurements.kmz: the KML files of example plume measurements for visited ammonia fertilzier plants.