EMIT L2B Estimated Methane Plume Complexes 60 m V001

Description

The Earth Surface Mineral Dust Source Investigation (EMIT) instrument measures surface mineralogy, targeting the Earth’s arid dust source regions. EMIT is installed on the International Space Station (ISS) and uses imaging spectroscopy to take measurements of the sunlit regions of interest between 52° N latitude and 52° S latitude. An interactive map showing the locations of methane plumes along with metadata, regions being investigated, current and forecasted data coverage, and additional data resources can be found on the VSWIR Imaging Spectroscopy Interface for Open Science (VISIONS) [EMIT Open Data Portal](https://earth.jpl.nasa.gov/emit/data/data-portal/coverage-and-forecasts/). In addition to its primary objective described above, EMIT has demonstrated the capacity to characterize methane (CH4) and carbon dioxide (CO2) point-source emissions by measuring gas absorption features in the short-wave infrared bands. The EMIT Level 2B Greenhouse Gas (GHG) series of products can be used to identify and quantify point source emissions. The EMIT Level 2B Estimated Methane Plume Complexes (EMITL2BCH4PLM) Version 1 data product provides estimated methane plume complexes in parts per million meter (ppm m) along with uncertainty data. The EMITL2BCH4PLM data product will only be generated where methane plume complexes have been identified. To reduce the risk of false positives, all [EMITL2BCH4ENH](https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001) data undergo a manual review (or identification and confirmation) process before being designated as a plume complex. For more information on the manual review process, see Section 4.2.2 of the EMIT GHG Algorithm Theoretical Basis Document (ATBD). Each EMITL2BCH4PLM granule is sized to a specific plume complex but may cross multiple EMITL2BCH4ENH granules. A list of source EMITL2BCH4ENH granules is included in the GeoTIFF file metadata as well as the GeoJSON file. Each EMITL2BCH4PLM granule contains two files: one Cloud Optimized GeoTIFF (COG) file at a spatial resolution of 60 meters (m) and one GeoJSON file. The EMITL2BCH4PLM COG file contains a raster image of a methane plume complex extracted from EMITL2BCH4ENH v001 data. The EMITL2BCH4PLM GeoJSON file contains a vector outline of the plume complex, a list of source scenes, coordinates of the maximum enhancement values, and the uncertainty of the plume complex. Known Issues * Data acquisition gap: From September 13, 2022, through January 6, 2023, a power issue outside of EMIT caused a pause in operations. Due to this shutdown, no data were acquired during that timeframe.

Resources

Name Format Description Link
5 https://lpdaac.usgs.gov%2F
5 https://doi.org%2F10.5067%2FEMIT%2FEMITL2BCH4PLM.001
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC2748088093-LPCLOUD
5 https://lpdaac.usgs.gov%2Fdocuments%2F1659%2FEMITL2B_ATBD_v1.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F1695%2FEMIT_L2B_GHG_User_Guide_V1.pdf
5 https://github.com%2Femit-sds%2Femit-ghg
5 https://github.com%2Fnasa%2FEMIT-Data-Resources
5 https://lpdaac.usgs.gov%2Fsearch%2F%3Fquery%3DEMIT%26content_types%3DE-Learning%26view%3Dcards%26sort%3Drelevance
5 https://earth.jpl.nasa.gov%2Femit%2F
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
5 https://data.lpdaac.earthdatacloud.nasa.gov%2Flp-prod-public%2FEMITL2BCH4PLM.001%2FEMIT_L2B_CH4PLM_001_20230430T164407_000931%2FEMIT_L2B_CH4PLM_001_20230430T164407_000931.png
5 https://earth.jpl.nasa.gov/emit/
5 https://www.earthdata.nasa.gov/centers/lp-daac
21 EMITL2BCH4PLM.001 https://doi.org/10.5067/EMIT/EMITL2BCH4PLM.001
5 https://search.earthdata.nasa.gov/search?q=C2748088093-LPCLOUD
33 EMITL2B_ATBD_v1.pdf https://lpdaac.usgs.gov/documents/1659/EMITL2B_ATBD_v1.pdf
33 EMIT_L2B_GHG_User_Guide_V1.pdf https://lpdaac.usgs.gov/documents/1695/EMIT_L2B_GHG_User_Guide_V1.pdf
5 https://github.com/emit-sds/emit-ghg
5 https://github.com/nasa/EMIT-Data-Resources
5 https://lpdaac.usgs.gov/search/?query=EMIT&content_types=E-Learning&view=cards&sort=relevance
34 EMIT_L2B_CH4PLM_001_20230430T164407_000931.png https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/EMITL2BCH4PLM.001/EMIT_L2B_CH4PLM_001_20230430T164407_000931/EMIT_L2B_CH4PLM_001_20230430T164407_000931.png
5 https://asdc.larc.nasa.gov/documents/erbe/read_software/io.c
33 erbe_project.pdf https://asdc.larc.nasa.gov/documents/erbe/guide/erbe_project.pdf
33 erbe_s10n.pdf https://asdc.larc.nasa.gov/documents/erbe/guide/erbe_s10n.pdf
5 https://asdc.larc.nasa.gov/citing-data
47 readme_erbe_s10n_wfov_nf_edition3.txt https://asdc.larc.nasa.gov/documents/erbe/readme/readme_erbe_s10n_wfov_nf_edition3.txt
47 readme_erbe_s10n_wfv_nf_nat_dmonotice1.txt https://asdc.larc.nasa.gov/documents/erbe/readme/readme_erbe_s10n_wfv_nf_nat_dmonotice1.txt
33 erbe_s10n_wfov_nf_sf_erbs_edition3.pdf https://asdc.larc.nasa.gov/documents/erbe/quality_summaries/s10n_wfov/erbe_s10n_wfov_nf_sf_erbs_edition3.pdf
5 https://asdc.larc.nasa.gov/project/GEWEX-RFA
5 https://earthdata.nasa.gov/learn/sensing-our-planet/a-burning-question
5 https://earthdata.nasa.gov/learn/sensing-our-planet/absorption-of-solar-radiation-by-clouds-observations-versus-models
5 https://earthobservatory.nasa.gov/features/QuestionConvection
33 erbe_overview.pdf https://asdc.larc.nasa.gov/documents/erbe/readme/erbe_overview.pdf
33 view_hdf.pdf https://asdc.larc.nasa.gov/documents/tools/view_hdf.pdf
5 https://asdc.larc.nasa.gov/data/ERBE/S10N/WFOV_NF_ERBS_Edition3/
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C1000000820-LARC_ASDC.iso19115
5 https://asdc.larc.nasa.gov/project/ERBE
21 https://doi.org/10.5067/ERBE/S10N_WFOV_NF_EDITION3_NAT_L3
5 https://search.earthdata.nasa.gov/search/granules?p=C1000000820-LARC_ASDC
57 erbe_s10n_edition3_read.zip https://asdc.larc.nasa.gov/documents/erbe/read_software/erbe_s10n_edition3_read.zip
5 https://asdc.larc.nasa.gov/documents/erbe/read_software/gbytes.c
5 https://earth.jpl.nasa.gov/emit/
5 https://www.earthdata.nasa.gov/centers/lp-daac
5 EMITL2BCH4PLM.001 https://doi.org/10.5067/EMIT/EMITL2BCH4PLM.001
5 https://search.earthdata.nasa.gov/search?q=C2748088093-LPCLOUD
33 EMITL2B_ATBD_v1.pdf https://lpdaac.usgs.gov/documents/1659/EMITL2B_ATBD_v1.pdf
33 EMIT_L2B_GHG_User_Guide_V1.pdf https://lpdaac.usgs.gov/documents/1695/EMIT_L2B_GHG_User_Guide_V1.pdf
5 https://github.com/emit-sds/emit-ghg
34 EMIT_L2B_CH4PLM_001_20230430T164407_000931.png https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/EMITL2BCH4PLM.001/EMIT_L2B_CH4PLM_001_20230430T164407_000931/EMIT_L2B_CH4PLM_001_20230430T164407_000931.png
5 https://github.com/nasa/EMIT-Data-Resources
5 https://lpdaac.usgs.gov/search/?query=EMIT&content_types=E-Learning&view=cards&sort=relevance
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2748088093-LPCLOUD.iso19115

Tags

  • earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-methane
  • earth-science-air-quality-atmosphere-emissions

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