Imaging · collection · 2021
MERRA-2 avgM_2d_pm25_admin0, 2d, Single-Level, Country-Level Surface PM2.5 Monthly Mean Products V1 (M2_TMAX_PM25)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/fy616726uxsr
M2_TMAX_PM25 is a value-added product derived from the MERRA-2 aerosol monthly product M2TMNXAER_5.12.4 (or tavgM_2d_aer_Nx).
Description
The surface concentration of fine particulate matter (PM2.5) is calculated as the sum of individual aerosol components (organic carbon, black carbon, sulfate, sea salt, and dust) (Buchard et al., 2017) and is recast from the native MERRA-2 model grid. This data collection includes separate files for country-level (and territories) PM2.5 concentrations with and without population weighting applied.
MERRA-2 Mailing List: Sign up to receive information on reprocessing of data, changing of tools and services, as well as data announcements from GMAO. Contact the GES DISC Help Desk (gsfc-dl-help-disc@mail.nasa.gov) to be added to the list. Questions: If you have a question, please read "MERRA-2 File Specification Document", “MERRA-2 Data Access – Quick Start Guide”, and FAQs linked from the ”Documentation” tab on this page.
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If that does not answer your question, you may post your question to the NASA Earthdata Forum (forum.earthdata.nasa.gov) or email the GES DISC Help Desk (gsfc-dl-help-disc@mail.nasa.gov).
Links
Get the data
- Resource disc.gsfc.nasa.gov/datacollection/M2_TMAX_PM25_1.html ↗
Access the dataset landing page from the GES DISC website.
landing page · download · from NASA CMR, data nasa gov
- Access the data via the OPeNDAP protocol. cmr.earthdata.nasa.gov/virtual-directory/collections/C2184005745-GES_DISC/temporal ↗
metadata API · download · from NASA CMR, data nasa gov
- PDF docserver.gesdisc.eosdis.nasa.gov/public/project/MERRA/Records_MERRA-2_Data_Reprocessing_and_Ser… ↗
Records of MERRA-2 Data Reprocessing and Service Changes
documentation · download · from NASA CMR, data nasa gov
- README Document goldsmr4.gesdisc.eosdis.nasa.gov/data/MERRA2_CLIM/M2_TMAX_PM25.1/doc/README_M2PM25.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- File Specification Document gmao.gsfc.nasa.gov/media/publications/zbly36ziNFDFbmYmvhQeVqPhUo/Keller1487.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2184005745-GES_DISC.iso19115 ↗
download · from data nasa gov
- Access the data via HTTPS. goldsmr4.gesdisc.eosdis.nasa.gov/data/MERRA2_CLIM/M2_TMAX_PM25.1 ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C2184005745-GES_DISC ↗
Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data.
download · from NASA CMR
- Resource gmao.gsfc.nasa.gov/gmao-products/merra-2/documentation_merra-2 ↗
The NASA GMAO MERRA-2 Data Documentation and FAQs
download · project · from data nasa gov, NASA CMR
- Resource disc.gsfc.nasa.gov/information/howto?title=How%2520to%2520remotely%2520access%252… ↗
download · from data nasa gov
- PNG docserver.gesdisc.eosdis.nasa.gov/public/project/Images/M2_TMAX_PM25_1.png ↗
Sample image:`the annual mean surface PM2.5 at country level for 2019.
download · preview image · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/merra-2-avgm-2d-pm25-admin0-2d-single-level-country-le… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/fy616726uxsr ↗
DOI / persistent id · from NASA CMR
Documentation and papers
- How to calculate MERRA-2 PM2.5 disc.gsfc.nasa.gov/information/howto?title=How+to+remotely+access+MERRA-2+with+Py… ↗
documentation · from NASA CMR
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2184005745-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=bee80c90-fca6-4d06-8be4-8686d962f… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2184005745-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
Provenance · 2 source records, 22 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2184005745-GES_DISC | 7 d ago | JSON v1 |
| NASA Data Portal | bee80c90-fca6-4d06-8be4-8686d962f92f | 4 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:medicine-health | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[instrument].gcmd_instrument:not-applicable | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/aerosols/dust-ash-smoke | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/aerosols/particulate-matter | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/air-quality | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/air-quality/particulates | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/human-dimensions/public-health/environmental-health-factors/particulate-matter-concentrations | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:merra-2 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |