Data · collection · 1997
TRMM/PR L2 Surface Cross Section
Listed in NASA Earthdata CMR
TRMM/PR L2 Surface Cross Section is obtained from the PR sensor onboard TRMM and produced by the Japan Aerospace Exploration Agency (JAXA).
Description
The Precipitation Radar (PR) is the primary instrument onboard TRMM. The most innovative of the five TRMM instruments, the PR is the first quantitative rain radar instrument to be flown in space.
The major objectives of the PR instrument are as follows:a. Provides a 3-dimensional rainfall structureb. Achieves quantitative measurements of the rain rates over both land and ocean When properly combined with TMI measurements, the Precipitation Radar (PR) data is instrumental in obtaining the height profile of the precipitation content, from which the profile of latent heat release from the Earth can be estimated.
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The rain rate is estimated from the radar reflectivity factor when the rain rate is small by applying conventional algorithms used for ground-based radar. For large rain rates, a rain attenuation correction is made using the total-path attenuation of land or sea surface echoes.Based on the 1B-21 radar received power, time and spatial average of ground surface scattering coefficient (Scattering Radar Cross Section of the surface) are calculated.
If it's raining, Path Integrated Attenuation (PIA) is calculated based on the surface reference data of no rain area. This PIA is used to calculate rainfall profile in 2A-25 as reference data using Surface Reference Technique (SRT).The provided format is HDF4. The Sampling resolution are 5 km (horizontal) and 250 m (range).
The current version of the product is Version 7. The generation unit is orbit.
Links
Get the data
- DescribedBy fedeo-client.ceos.org/?uid=TRMM_PR_L2_2A21 ↗
download · from NASA CMR
- GET DATA gportal.jaxa.jp/gpr/?lang=en ↗
download · from NASA CMR
- DescribedBy fedeo.ceos.org/collections/series/items/TRMM_PR_L2_2A21?httpAccept=applicatio… ↗
download · from NASA CMR
Where it is published
- Landing Page doi.org/10.57746/eo.01gs73b05w4k4mgk452amabay7 ↗
landing page · DOI / persistent id · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2698129642-JAXA.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2698129642-JAXA.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Radar · TRMM Precipitation Radar · Tropical Rainfall Measuring Mission
Provenance · 1 source records, 13 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2698129642-JAXA | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:pr | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/radar | 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 |