SCICHEM data for methane dispersion in the Permian Basin

This dataset contains the input (meteorological and terrain) and output data (raw concentration output, calculated methane columns) from SCICHEM used in the pre-print article "Using Frequent, High-Resolution Remote Sensing to Identify Intermittent and Overlapping CH₄ sources in Oil and Gas Development Regions" to be submitted to Journal of Geophysical Research - Atmosphere.

• The meteorological input data for SCICHEM (https://github.com/epri-dev/SCICHEM) is included in the zipped file "MET_INPUT.zip" and includes the files
  • METSCI2016.SFC - surface met file
  • METSCI2016.PRF - upper air met file
• The terrain input data for SCICHEM is included in the file "TERRAIN_INPUT.zip" and includes the files
  • ter.inp - the input file for the SCICHEM preprocessor TERSCI. The references NED data can be downloaded from  http://www.mrlc.gov/viewerjs/ (seamless GeoTiff) or ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/NED (ArcGrid)
  • terrain.ter - the SCICHEM input file produced by TERSCI
  • *.out - log files produced by TERSCI
• The raw output for the continuous methane source tests are in the file "continuous_rel_case.zip". This folder contains several comma separated value (CSV) files with the following columns
  • x - UTM east-west coordinates in m (corresponding to the projection used in the TERSCI terrain preprocessor)
  • y - UTM north-south coordinates in m
  • z - height above ground level (m)
  • c - enhanced methane concentration in µg m^-3
  • t - time in the format YYYYMMDDHHMMSS
• The raw output for the instantaneous methane source tests are in the file "instantaneous_rel_case.zip". This folder contains several comma separated value (CSV) files with the following columns
  • x - UTM east-west coordinates in m (corresponding to the projection used in the TERSCI terrain preprocessor)
  • y - UTM north-south coordinates in m
  • z - height above ground level (m)
  • c - enhanced methane concentration in µg m^-3
  • t - time in the format YYYYMMDDHHMMSS
• The processed columns for the continuous methane source tests are in the file "CALC_METHANE_COL_OUTPUT.zip", which contains two CSV files for the continuous and instantaneous releases with the following columns
  • x - UTM east-west coordinates in m
  • y - UTM north-south coordinates in m
  • t - time in the format YYYYMMDDHHMMSS
  • BG_mask - TRUE if location was used in background calculation for plume mask
  • tcol_g_m2_with_bg_and_no_noise - total (enhanced plus background) methane column (g m^-2)
  • tcol_g_m2_with_bg_and_half_pct_noise - the total methane column with 0.5% Gaussian noise added (g m^-2)
  • plume_mask - TRUE if region was tentatively identified as within the plume using the t-test
  • median_filt_mask - TRUE if region was tentatively identified as within the plume after the median filter was applied
  • final_filtered_plume - TRUE if region was identified as within the plume after all filters were applied