Imaging · collection · 2011
TRMM Precipitation Radar Surface Cross-Section L2 1.5 hours V7 (TRMM_2A21)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/h1t6fitl401r
The new version of these data is in GPM-like format (consistent with the GPM Dual-frequency Radar data format), and can be found under the name GPM_2APR.
Description
This is the sigma zero algorithm, which inputs the PR power (1B21) and computes estimates of the path attenuation and its reliability by using the surface as a reference target. It also computes the spatial and temporal statistics of the surface scattering cross section and classifies the cross sections into land/ocean and rain/no rain categories.
Changes in horizontal resolution resulting from the TRMM boost that occurred on 24 August 2001: Pre-Boost (before 7 August 2001): Temporal Resolution: 91.5 min/orbit ~ 16 orbits/day; Swath Width: 215 km; Horizontal Resolution: 4.3 km Post-Boost (after 24 August 2001): Temporal Resolution: 92.5 min/orbit ~ 16 orbits/day; Swath Width: 247 km; Horizontal Resolution: 5.0 km
Links
Get the data
- Resource disc.gsfc.nasa.gov/datacollection/TRMM_2A21_7.html ↗
Access the dataset landing page from the GES DISC website.
landing page · download · from NASA CMR, data nasa gov
- PDF eorc.jaxa.jp/TRMM/documents/PR_algorithm_product_information/pr_manual/PR_I… ↗
TRMM Precipitation Radar Instruction Manual (provided by JAXA)
documentation · download · from NASA CMR, data nasa gov
- TRMM Data Gaps gpmweb2https.pps.eosdis.nasa.gov/tsdis/AB/docs/anomalous.html ↗
documentation · download · from NASA CMR, data nasa gov
- README Document disc2.gesdisc.eosdis.nasa.gov/data/TRMM_L2/TRMM_2A21/doc/README.TRMM_V7.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- TRMM File Naming Convention docserver.gesdisc.eosdis.nasa.gov/repository/Mission/TRMM/TRMM_file_naming.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- File specification document. pps.gsfc.nasa.gov/Documents/filespec.TRMM.V7.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Comparison between TRMM versions 6 and 7. pps.gsfc.nasa.gov/Documents/formatChangesV7.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C1282060544-GES_DISC.iso19115 ↗
download · from data nasa gov
- Access the data via HTTPS cmr.earthdata.nasa.gov/virtual-directory/collections/C1282060544-GES_DISC/temporal ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C1282060544-GES_DISC ↗
Use the Earthdata Search to find and retrieve data sets across multiple data centers.
download · from NASA CMR
- PNG docserver.gesdisc.eosdis.nasa.gov/public/project/Images/TRMM_2A21_7.png ↗
download · preview image · from data nasa gov, NASA CMR
- Resource disc2.gesdisc.eosdis.nasa.gov/data/TRMM_L2/TRMM_2A21.7 ↗
download · from data nasa gov
- Resource disc2.gesdisc.eosdis.nasa.gov/opendap/TRMM_L2/TRMM_2A21.7 ↗
download · from data nasa gov
- Resource gpm.nasa.gov ↗
download · project · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/trmm-precipitation-radar-surface-cross-section-l2-1-5-… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/h1t6fitl401r ↗
DOI / persistent id · from NASA CMR
Catalogue records · 4
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1282060544-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- Access the data via the OPeNDAP protocol. cmr.earthdata.nasa.gov/virtual-directory/collections/C1282060544-GES_DISC ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=f6c51eb0-471d-4ea2-a5e5-190e513b8… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1282060544-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Rain · Sigma Naught · TRMM Precipitation Radar · Tropical Rainfall Measuring Mission
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Ocean & Atmospheric Science · Physics
- Inferred from text
- Hydrology 69%
Provenance · 2 source records, 20 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1282060544-GES_DISC | 14 d ago | JSON v1 |
| NASA Data Portal | f6c51eb0-471d-4ea2-a5e5-190e513b86c2 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3707 | enrichment · NASA CMR | taxonomy-embedding@1.0.0 | title+keywords+description (69%) |
| 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:engineering | 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:pr | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/precipitation/liquid-precipitation/rain | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/radar/sigma-naught | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:trmm | 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 |