Imaging · collection · 2013
GPM GROUND VALIDATION AIRBORNE SECOND GENERATION PRECIPITATION RADAR (APR-2) GCPEX V1
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/gpmgv/gcpex/apr2/data101
The GPM Ground Validation Airborne Second Generation Precipitation Radar (APR-2) GCPEx dataset was collected during the GPM Cold-season Precipitation Experiment (GCPEx), which occurred in Ontario, Canada during the winter season of 2011-2012.
Description
GCPEx addressed shortcomings in the GPM snowfall retrieval algorithm by collecting microphysical properties, associated remote sensing observations, and coordinated model simulations of precipitating snow.
The Second Generation Airborne Precipitation Radar (APR-2) is a dual-frequency (13 GHz and 35 GHz), Doppler, dual-polarization radar system. It has a downward looking antenna that performs cross track scans, covering a swath that is +/- 25 degrees to each side of the aircraft path. Additional features include: simultaneous dual-frequency, matched beam operation at 13.4 and 35.6 GHz (same as GPM Dual-Frequency Precipitation Radar), simultaneous measurement of both like- and cross-polarized signals at both frequencies, Doppler operation, and real-time pulse compression (calibrated reflectivity data can be produced for large areas in the field during flight, if necessary).
Read the rest (1 more)
The APR-2 flew aboard the NASA DC-8 for the GPM Cold-season Precipitation Experiment (GCPEx) from 11 January to 25 February, 2012.
Links
Get the data
- Instructions for citing GHRC data ghrc.nsstc.nasa.gov/home/about-ghrc/citing-ghrc-daac-data ↗
documentation · download · from NASA CMR, data nasa gov
- Resource ghrc.nsstc.nasa.gov/home/micro-articles/snow-microphysics-event-during-gcpex-field… ↗
Snow Microphysics Event during GCPEx Field Campaign
documentation · download · from NASA CMR, data nasa gov
- PDF ghrc.earthdata.nasa.gov/browseui ↗
Product handbook for the Airborne Precipitation Radar Second Generation (APR-2): GCPEX 4.0 and 2.0
documentation · download · from NASA CMR, data nasa gov
- GCPEx Field Campaign Collection DOI doi.org/10.5067/gpmgv/gcpex/data101 ↗
documentation · download · from NASA CMR, data nasa gov
- Resource ghrc.earthdata.nasa.gov/browseui ↗
The guide document contains detailed information about the dataset
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C1979126739-GHRC_DAAC.iso19115 ↗
download · from data nasa gov
- Resource ghrc.nsstc.nasa.gov/home/field-campaigns/GCPEx ↗
The home page for the project or program which sponsored the dataset
download · project · from data nasa gov, NASA CMR
- Resource ghrc.earthdata.nasa.gov/browseui ↗
download · preview image · from data nasa gov, NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C1979126739-GHRC_DAAC ↗
Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data.
download · from NASA CMR
- PNG ghrc.earthdata.nasa.gov/browseui ↗
download · preview image · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/gpm-ground-validation-airborne-second-generation-preci… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/gpmgv/gcpex/apr2/data101 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CKAN API data.nasa.gov/api/3/action/package_show?id=cc4b7c5c-467a-486e-a38b-3fd7188f4… ↗
metadata API · from data nasa gov
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1979126739-GHRC_DAAC.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1979126739-GHRC_DAAC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Doppler Velocity · NASA Douglas DC-8 · Precipitation Rate · Radar Backscatter · Radar Reflectivity · Second Generation Airborne Precipitation Radar
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Ocean & Atmospheric Science · Physics
- Inferred from text
- Atmospheric sciences 70% · Satellite remote sensing 65%
Provenance · 2 source records, 23 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1979126739-GHRC_DAAC | 15 d ago | JSON v1 |
| NASA Data Portal | cc4b7c5c-467a-486e-a38b-3fd7188f43e2 | 12 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:apr-2 | 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/doppler-velocity | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/radar/radar-backscatter | 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:remote-sensing | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[platform].gcmd_platform:nasa-dc-8 | 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 · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |