Array · collection · 2026
DSCOVR EPIC Level 4 Tropospheric Ozone High Resolution Version 01
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/epic/dscovr/tro3_highres_l4.01
The Earth Polychromatic Imaging Camera (EPIC) on the DSCOVR spacecraft provides measurements of Earth-reflected radiances from the entire sunlit portion of the Earth.
Description
The measurements from four EPIC UV channels are used to reconstruct global distributions of total ozone. The tropospheric ozone columns (TCO) are then derived by subtracting independently measured stratospheric ozone columns from the EPIC total ozone.
TCO data product files report gridded synoptic maps of TCO measured over the sunlit portion of the Earth disk on a 1-2 hour basis. Sampling times for these hourly TCO data files are the same as for the EPIC L2 total ozone product. This Version 1.0 of the TCO product is based on Version 3 of the EPIC L1 product and the Version 3 Total Ozone Column Product.
Read the rest (2 more)
The stratospheric columns were derived from the Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) ozone fields (Gelaro et al., 2017). In contrast to the EPIC total ozone maps that are reported at high spatial resolution of 18 × 18 km2 near the center of the image, the TCO maps are spatially averaged over several EPIC pixels and reported on a regular spatial grid (0.25° latitude × 0.25° longitude).
Kramarova et al. (2021) provides a detailed description of the EPIC TCO product and its evaluation against independent ozonesondes and satellite measurements. Table 1 in Kramarova et al. (2021) lists all of the variables included in the TCO product files. Ozone arrays in the product files are integrated vertical columns in Dobson Units (DU; 1 DU = 2.687×10^20 molecules/m^2).
Links
Get the data
- Resource doi.org/10.5067/epic/dscovr/tro3_highres_l4.01 ↗
DOI data set landing page for DSCOVR_EPIC_L4_TrO3_highres_01
landing page · download · DOI / persistent id · from NASA CMR, data nasa gov
- How to cite ASDC data earthdata.nasa.gov/engage/open-data-services-software-policies/data-use-guidance ↗
documentation · download · from NASA CMR, data nasa gov
- search.earthdata.nasa.gov /search/granules?p=C4191624003-LARC_CLOUD ↗
Earthdata Search for DSCOVR_EPIC_L4_TrO3_highres_01 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data)
download · from NASA CMR
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C4191624003-LARC_CLOUD.iso19115 ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/dscovr-epic-level-4-tropospheric-ozone-high-resolution… ↗
landing page · from data nasa gov
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C4191624003-LARC_CLOUD.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=69ee789f-576d-4546-8112-929f242cb… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C4191624003-LARC_CLOUD.html ↗
catalogue entry · from NASA CMR
Topics
Provenance · 2 source records, 22 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C4191624003-LARC_CLOUD | 7 d ago | JSON v1 |
| NASA Data Portal | 69ee789f-576d-4546-8112-929f242cbdc8 | 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:chemistry | 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: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:epic | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/air-quality/tropospheric-ozone | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-chemistry/oxygen-compounds/atmospheric-ozone/total-ozone | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[modality].local:modality:imaging | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[modality].local:modality:tabular | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[platform].gcmd_platform:dscovr | 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 · data nasa gov | connector:data_nasa_gov@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 · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |