Array · collection · 2026
AirSHARP CIRPAS Twin Otter Remotely Sensed Spectrometers for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR) Data
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/airsharp/cirpas-to/4starb_1
AirSHARP_AircraftRemoteSensing_CIRPAS-TO_4STARB_Data is the in-situ aerosol data collected onboard the Twin Otter aircraft flying the CIRPAS suite of instruments during the Airborne aSsessment of Hyperspectral Aerosol optical depth and water-leaving Reflectance (AirSHARP) campaign.
Description
Data from the Spectrometers for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR) instrument is featured in this collection. Data collection for this product is complete.
NASA’s Airborne aSsessment of Hyperspectral Aerosol optical depth and water-leaving Reflectance (AirSHARP) observed the atmosphere and ocean for validating the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) satellite’s Ocean Color Instrument (OCI). During October 2024 and May 2025, AirSHARP conducted simultaneous airborne and seaborne campaigns to collect data under different environmental conditions, validating as much of OCI’s range as possible.
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Over the two deployments, 14 flights were conducted utilizing the NPS CIRPAS Twin Otter Aircraft. The aircraft was equipped with facility instruments measuring meteorological and navigation parameters, along with the Spectrometer for sky-scanning sun Tracking Atmospheric Research B (4STAR-B) instrument. Additional radiometer package, C-AIR (Coastal Airborne In-Situ Radiometers), for sampling the water leaving radiances and remote sensing reflectances of the Monterey Bay were on board the Twin Otter during AirSHARP, with its data archived in the SeaBass archive (seabass.gsfc.nasa.gov/experiment/PVST_AIRSHARP).
The overarching goal of both AirSHARP deployments was to assess hyperspectral aerosol optical depth and water-leaving reflectance products for PACE OCI and polarimeter validation.
Links
Get the data
- Resource doi.org/10.5067/airsharp/cirpas-to/4starb_1 ↗
DOI Dataset Landing Page for AirSHARP_AircraftRemoteSensing_CIRPAS-TO_4STARB_Data_1
landing page · download · DOI / persistent id · from NASA CMR, data nasa gov
- How to Cite ASDC Data asdc.larc.nasa.gov/citing-data ↗
documentation · download · from NASA CMR, data nasa gov
- PACE-PAX White Paper pace.oceansciences.org/docs/PACETM_vol11.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Resource nasa.gov/centers-and-facilities/ames/ames-science/by-air-and-by-sea-val… ↗
By Air and by Sea: Validating NASA’s PACE Ocean Color Instrument
documentation · download · from NASA CMR, data nasa gov
- Resource nasa.gov/wp-content/uploads/2025/12/airsharp-arc-esd-2025-07-30-48e12b.… ↗
Airborne Measurements of Ocean Color and Aerosols for Validation of NASA’s PACE Satellite
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C4129962219-LARC_CLOUD.iso19115 ↗
download · from data nasa gov
- search.earthdata.nasa.gov /search/granules?p=C4129962219-LARC_CLOUD ↗
Earthdata Search for AirSHARP_AircraftRemoteSensing_CIRPAS-TO_4STARB_Data_1
download · from NASA CMR
- cmr.earthdata.nasa.gov /virtual-directory/collections/C4129962219-LARC_CLOUD ↗
CMR Virtual Directory for AirSHARP_AircraftRemoteSensing_CIRPAS-TO_4STARB_Data_1
download · from NASA CMR
- Resource espo.nasa.gov/pace-pax ↗
download · project · from data nasa gov, NASA CMR
- Resource earthdata.nasa.gov/data/projects/airsharp ↗
download · project · from data nasa gov, NASA CMR
- Resource pace.oceansciences.org/pace-pax.htm ↗
download · project · from data nasa gov, NASA CMR
- Resource www-air.larc.nasa.gov/missions/pacepax ↗
download · project · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/airsharp-cirpas-twin-otter-remotely-sensed-spectromete… ↗
landing page · from data nasa gov
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C4129962219-LARC_CLOUD.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=51806da8-9c53-4cf1-a0ce-0390687ab… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C4129962219-LARC_CLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Absorbing Aerosol Optical Depth/Thickness · Angstrom Exponent · Spectrometers for Sky-Scanning, Sun-Tracking Atmospheric Research · TWIN OTTER CIRPAS NPS
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
- Inferred from text
- Atmospheric sciences 69% · Satellite remote sensing 65%
Provenance · 2 source records, 20 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C4129962219-LARC_CLOUD | 8 d ago | JSON v1 |
| NASA Data Portal | 51806da8-9c53-4cf1-a0ce-0390687abd58 | 6 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 (69%) |
| 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: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:4star | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/aerosols/aerosol-optical-depth-thickness/absorbing-aerosol-optical-depth-thickness | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/aerosols/aerosol-optical-depth-thickness/angstrom-exponent | 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:twin-otter-cirpas-nps | 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 · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |