Imaging · collection · 2007
TRMM Ground Validation Rain Gauge Rain Rate L2 1 month V7 (TRMM_2A56)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/jnwq3l5ujg7o
The program rgmin generates 1-minute hourly rain rates from discrete tipping bucket rain gauge data by applying an interpolation algorithm.
Description
The interpolating routine is based on the cubic spline routine published in the book "Numerical Recipes". The mathematical theory underlying this algorithm is presented in section 3.3 of the book along with a copy of the source code.
The mathematics involved will not be described in any detail, rather the spline will be described in context with its application to the broader algorithm being applied in rgmin. 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.
Read the rest (2 more)
The four primary GV sites are: + Darwin, Australia; + Houston, Texas; + Kwajalein, Republic of the Marshall Islands; + Melbourne, Florida. 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_2A56_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
- ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD) gpm-gv.gsfc.nasa.gov/Gauge ↗
documentation · download · from NASA CMR, data nasa gov
- File specification document gpm-gv.gsfc.nasa.gov/Gauge/2A56_format.html ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C1332654213-GES_DISC.iso19115 ↗
download · from data nasa gov
- Access the data via HTTPS cmr.earthdata.nasa.gov/virtual-directory/collections/C1332654213-GES_DISC/temporal ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C1332654213-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_L2/TRMM_2A56.7 ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/trmm-ground-validation-rain-gauge-rain-rate-l2-1-month… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/jnwq3l5ujg7o ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CKAN API data.nasa.gov/api/3/action/package_show?id=762adf9d-7315-454e-88fa-c5d410b7c… ↗
metadata API · from data nasa gov
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1332654213-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1332654213-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Precipitation Rate · Radar Reflectivity · Rain · RAIN GAUGES · 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 | C1332654213-GES_DISC | 14 d ago | JSON v1 |
| NASA Data Portal | 762adf9d-7315-454e-88fa-c5d410b7c60b | 11 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@1.0.0 | 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:rain-gauges | 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 |