Imaging · collection · 2007
TRMM Ground Validation Calibrated QC Radar Reflectivity Full Volume Scan L1C 1 hour V7 (TRMM_1C51)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/bz01h02b2mu3
The purpose of the 1C51 algorithm is to remove non-meteorological radar echoes that adversely affect the quality of higher level products, such as clutter associated with insects, birds, chaff, wildfires, antenna towers, and anomalous propagation (AP).
Description
Eight adjustable parameters, three echo height thresholds and five radar reflectivity thresholds, are used to optimize the performance of the algorithm. Optimum performance is time consuming and requires an analyst to select different sets of parameters on a per volume scan basis, and on occasions performing several iterations while adjusting one or more of the parameters.
A key component of the TRMM project is the Ground Validation (GV) effort which consists of collecting data from ground-based radar, rain gauges and disdrometers. The data is quality-controlled, and then validation products are produced for comparison with TRMM satellite products. The four primary GV sites are: + Darwin, Australia; + Houston, Texas; + Kwajalein, Republic of the Marshall Islands; + Melbourne, Florida.
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A significant effort is also being supported at NASA Wallops Flight Facility (WFF) and vicinity to provide high quality, long-term measurements of rain rates (via a network of rain gauges collocated with National Weather Service gauges), as well as drop size distributions (DSD) using a variety of instruments, including impact-type Joss Waldvogel, laser-optical Parsivel, as well as two-dimensional video disdrometers. DSD measurements are also being collected at Melbourne and Kwajalein using Joss-Waldvogel disdrometers.
Links
Get the data
- Resource disc.gsfc.nasa.gov/datacollection/TRMM_1C51_7.html ↗
Access the dataset landing page from the GES DISC website.
landing page · 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
- 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/ICSVol4.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD) docserver.gesdisc.eosdis.nasa.gov/public/project/GPM/GPM_TRMM_GVS_User_Guide_Vol1_Jul2014.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C1332654210-GES_DISC.iso19115 ↗
download · from data nasa gov
- Access the data via HTTPS cmr.earthdata.nasa.gov/virtual-directory/collections/C1332654210-GES_DISC/temporal ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C1332654210-GES_DISC ↗
Use the Earthdata Search to find and retrieve data sets across multiple data centers.
download · from NASA CMR
- Resource trmm-fc.gsfc.nasa.gov/trmm_gv ↗
download · project · from data nasa gov, NASA CMR
- Resource trmm-fc.gsfc.nasa.gov ↗
download · project · from data nasa gov, NASA CMR
- PNG docserver.gesdisc.eosdis.nasa.gov/public/project/GPM/browse/TRMM.logo.PNG ↗
download · preview image · from data nasa gov, NASA CMR
- Resource disc2.gesdisc.eosdis.nasa.gov/data/TRMM_GV_L1/TRMM_1C51.7 ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/trmm-ground-validation-calibrated-qc-radar-reflectivit… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/bz01h02b2mu3 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1332654210-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=5d861d94-49f2-4aff-a4ff-f48bfce9c… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1332654210-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- NEXt Generation RADar · Precipitation Rate · Radar Reflectivity · Rain · WEATHER STATIONS
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Ocean & Atmospheric Science · Physics
- Inferred from text
- Atmospheric sciences 70% · Video 75%
Provenance · 2 source records, 22 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1332654210-GES_DISC | 7 d ago | JSON v1 |
| NASA Data Portal | 5d861d94-49f2-4aff-a4ff-f48bfce9c6f4 | 4 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3701 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| 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:nexrad | 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/atmosphere/precipitation/precipitation-rate | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/radar/radar-reflectivity | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:video | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[platform].gcmd_platform:weather-stations | 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 |