Imaging · collection · 2020
Cross-track Infrared Sounder (CrIS) Level 2 Earth System Science Profiling Algorithm Ammonia Retrieval Algorithm (ESSPA-NH3) V1 (SNDRSNIL2ESPNH3)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/ehw76n16l83m
The objective of this limited edition data collection is to examine the ammonia products generated by the ESSPA (Earth System Science Profiling Algorithm) algorithm from the Cross-track Infrared Sounder (CrIS) instruments.
Description
The CrIS instrument used for this product is deployed on board the Suomi National Polar-orbiting Partnership (SNPP) platform and uses the Normal Spectral Resolution (NSR) data. The CrIS instrument is a Fourier transform spectrometer with a total of 1305 NSR infrared sounding channels covering the longwave (655-1095 cm-1), midwave (1210-1750 cm-1), and shortwave (2155-2550 cm-1) spectral regions.
The NH3 L2 ammonia algorithm is based on an AER (Atmospheric and Environmental Research, Inc.) program initially developed to process TES (Tropospheric Emissions Spectrometer) trace gas products. This version runs within the ESSPA software framework: it uses the AER OSS forward model and an optimal estimation approach with a Levenberg-Marquardt algorithm. Temperature and water profiles are obtained from the CLIMCAPS Field of Regard (FOR) products, as are initial guesses for surface temperature and emissivity.
Read the rest (2 more)
The algorithm consists of a two-step sequential retrieval the first step retrieves surface temperature and emissivity and the second step an ammonia profile. The algorithm produces ammonia retrievals on every field of view (FOV) in each FOR. A level 2 granule has been set as 6 minutes of data, 30 footprints crosstrack by 45 lines along track.
There are 240 granules per day, with an orbit repeat cycle of approximately 16 day.
Links
Get the data
- Resource disc.gsfc.nasa.gov/datacollection/SNDRSNIL2ESPNH3_1.html ↗
Access the dataset landing page from the GES DISC website.
landing page · download · from NASA CMR, data nasa gov
- README for SNPP ESSPA Ammonia docserver.gesdisc.eosdis.nasa.gov/public/project/SNPP/README.SNDRSNIL2ESPNH3.V1.0.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- ATBD for SNPP ESSPA Ammonia docserver.gesdisc.eosdis.nasa.gov/public/project/SNPP/ATBD.SNDRSNIL2ESPNH3.V1.0.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C1921638441-GES_DISC.iso19115 ↗
download · from data nasa gov
- Access the data via HTTPS. sounder.gesdisc.eosdis.nasa.gov/data/limited_editions/SNPP_ESSPA/SNDRSNIL2ESPNH3.1 ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C1921638441-GES_DISC ↗
Use the Earthdata Search to find and retrieve data sets across multiple data centers.
download · from NASA CMR
- Resource sounder.gesdisc.eosdis.nasa.gov/opendap/limited_editions/SNPP_ESSPA/SNDRSNIL2ESPNH3.1 ↗
download · from data nasa gov
- PNG docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SNDRSNIL2ESPNH3_1.png ↗
download · preview image · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/cross-track-infrared-sounder-cris-level-2-earth-system… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/ehw76n16l83m ↗
DOI / persistent id · from NASA CMR
Catalogue records · 4
- CKAN API data.nasa.gov/api/3/action/package_show?id=02399c1f-4926-49ce-be5a-7fc8a43e7… ↗
metadata API · from data nasa gov
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1921638441-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- Access the data via the OPeNDAP protocol. cmr.earthdata.nasa.gov/virtual-directory/collections/C1921638441-GES_DISC ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1921638441-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Ammonia · Ammonia · Cosmic Ray Isotope Spectrometer · Suomi-NPP
- From keywords
- Astronomy & Astrophysics · Chemistry · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
- Inferred from text
- Climate change science 70%
Provenance · 2 source records, 20 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1921638441-GES_DISC | 13 d ago | JSON v1 |
| NASA Data Portal | 02399c1f-4926-49ce-be5a-7fc8a43e7ca3 | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3702 | 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:chemistry | 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: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:cris | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-chemistry/nitrogen-compounds/ammonia | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-chemistry/ammonia | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:suomi-npp | 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 |