About this Dataset

Methane Emissions Estimates And Related Data Sets For Washington DC And Baltimore, MD Urban Areas

This dataset accompanies the publication below. Here we provide the results of the analysis, including gridded estimates of methane emissions for the Washington/Baltimore area at 0.01 degrees resolution and monthly from 2017 through 2021. All files available for unrestricted public use with citation of this data set except the Observations_XX files. Observations are for non-commercial use only, as they are purchased from a private data provider (AEM, Inc. via Earth Networks, Inc.).Methane Emissions Show Recent Decline but Strong Seasonality in Two US Northeastern CitiesAnna Karion, Subhomoy Ghosh, Israel Lopez-Coto, Kimberly Mueller, Sharon Gourdji, Joseph Pitt, and James WhetstoneEnvironmental Science & Technology 2023 57 (48), 19565-19574 DOI: 10.1021/acs.est.3c05050
Organization: National Institute of Standards and Technology
Last updated: 2025-07-09T14:14:12.797984
Tags: emission-inventories, ghg-concentration-measurements, methane-measurements-and-models, urban-greenhouse-gas-domes

Tables

Coordinates And Area Of Analysis Domain

@usgov.national_institute_of_standard_methane_emissions_estim_e389ba88.coordinates_and_area_of_analysis_domain

31.4 KB
19200 rows
5 columns


CREATE TABLE coordinates_and_area_of_analysis_domain (
  "lat" DOUBLE,
  "long" DOUBLE,
  "area_m2" DOUBLE,
  "dcua_mask" DOUBLE,
  "baltua_mask" DOUBLE
);

Observations

@usgov.national_institute_of_standard_methane_emissions_estim_e389ba88.observations

12.95 MB
622464 rows
20 columns


CREATE TABLE observations (
  "obs_datetime" TIMESTAMP,
  "site" VARCHAR,
  "obs" VARCHAR,
  "obs_unc" VARCHAR,
  "obs_std" VARCHAR,
  "obs_n" VARCHAR,
  "aft" VARCHAR,
  "bgdist" VARCHAR,
  "exitangle" VARCHAR,
  "bgangle" VARCHAR,
  "bgcol" VARCHAR,
  "bgcol_1" VARCHAR,
  "bgcol_stderr" VARCHAR,
  "bgaft" VARCHAR,
  "bgaft_1" VARCHAR,
  "ng05" VARCHAR,
  "ng15" VARCHAR,
  "ng15_wastex3" VARCHAR,
  "ng15_wetlandsx3" VARCHAR,
  "ident_string" VARCHAR
);

Observations File

@usgov.national_institute_of_standard_methane_emissions_estim_e389ba88.observations_file

12.93 MB
622464 rows
20 columns


CREATE TABLE observations_file (
  "obs_datetime" TIMESTAMP,
  "site" VARCHAR,
  "obs" VARCHAR,
  "obs_unc" VARCHAR,
  "obs_std" VARCHAR,
  "obs_n" VARCHAR,
  "aft" VARCHAR,
  "bgdist" VARCHAR,
  "exitangle" VARCHAR,
  "bgangle" VARCHAR,
  "bgcol" VARCHAR,
  "bgcol_1" VARCHAR,
  "bgcol_stderr" VARCHAR,
  "bgaft" VARCHAR,
  "bgaft_1" VARCHAR,
  "ng05" VARCHAR,
  "ng15" VARCHAR,
  "ng15_wastex3" VARCHAR,
  "ng15_wetlandsx3" VARCHAR,
  "ident_string" VARCHAR
);

Prior Emissions Maps For Each Sector Considered

@usgov.national_institute_of_standard_methane_emissions_estim_e389ba88.prior_emissions_maps_for_each_sector_considered

658.85 KB
19200 rows
11 columns


CREATE TABLE prior_emissions_maps_for_each_sector_considered (
  "ngdist05" DOUBLE,
  "ngdist15" DOUBLE,
  "ngdist25" DOUBLE,
  "ngtransmission" DOUBLE,
  "mobilecombustion" DOUBLE,
  "stationarycombustion" DOUBLE,
  "landfill" DOUBLE,
  "compost" DOUBLE,
  "wastewater" DOUBLE,
  "agriculture" DOUBLE,
  "wetland" DOUBLE
);

Prior Inventories Used In Analysis

@usgov.national_institute_of_standard_methane_emissions_estim_e389ba88.prior_inventories_used_in_analysis

860.23 KB
19200 rows
5 columns


CREATE TABLE prior_inventories_used_in_analysis (
  "ng05" DOUBLE,
  "ng15" DOUBLE,
  "ng25" DOUBLE,
  "ng15_wastex3" DOUBLE,
  "ng15_wetlandsx3" DOUBLE
);