Array · collection · 2025
PACE HARP2 Level-3 Global Mapped Cloud Optical Properties, GISS Polarimetric Cloud (GPC) Algorithm - Near Real-time (NRT) Data, version 3.0
Listed in NASA Earthdata CMR
The Ocean Biology DAAC produces near real-time (NRT) products using the best-available combination of ancillary data from meteorological and ozone data.
Description
As such, the inputs and the calibration used are less than optimal. Near real-time products provide a snapshot of the data during a short time period within a single orbit.
The CLOUD_GPC suite provides cloud properties derived from the GISS Polarimetric Cloud (GPC) algorithm, along with additional variables obtained through combination with the OCI CLOUD suite. Given the novelty of implementing a polarimetric algorithm on a global scale, note that several experimental variables—particularly those intended for diagnostic purposes and future refinement—are included and may change in subsequent, more mature versions.
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Core geophysical variables in this suite include: - cloud_bow_droplet_effective_radius - Cloud droplet effective radius from Cloud Bow polarimetric retrievals using parametric fitting technique (µm) - cloud_bow_droplet_effective_variance - Cloud droplet effective variance from Cloud Bow polarimetric retrievals using parametric fitting technique (unitless) - cloud_bow_fit_correlation - Parametric fitting correlation for Cloud Bow retrievals of droplet radius and variance (unitless) - cloud_bow_rms - Root-mean-square error for Cloud Bow retrievals of droplet radius and variance (unitless) - cloud_liquid_index - Index measuring the strength of the primary rainbow in polarized reflectances from liquid cloud droplets (unitless) - cloud_rft_mode_fraction_0 - Fractional contribution of droplet mode 1 from Rainbow Fourier Transform retrievals (unitless; range: 0–1) - cloud_rft_mode_fraction_1 - Fractional contribution of droplet mode 1 from Rainbow Fourier Transform retrievals (unitless; 0–1)
Links
Get the data
- NASA's Ocean Color Web - Data Distribution Site oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Mapped/PACE-HARP2 ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C3600170019-OB_CLOUD ↗
Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data.
download · from NASA CMR
Documentation and papers
- PACE Homepage earthdata.nasa.gov/data/platforms/space-based-platforms/PACE ↗
documentation · from NASA CMR
- HARP2 Homepage earthdata.nasa.gov/data/instruments/HARP2 ↗
documentation · from NASA CMR
- nasa.github.io /oceandata-notebooks ↗
Satellite data procesing can be difficult. We're here to help! Visit the Oceandata Help Hub to navigate learning content for accessing visualizing, and analyzing data products.
documentation · from NASA CMR
- View the version history of this product. oceancolor.gsfc.nasa.gov/data/reprocessing ↗
documentation · from NASA CMR
Catalogue records · 3
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3600170019-OB_CLOUD.html ↗
catalogue entry · from NASA CMR
- oceandata.sci.gsfc.nasa.gov /opendap/PACE_HARP2/L4SMI ↗
OPeNDAP Site for PACE HARP2 Standard Mapped Image (SMI) Product
metadata API · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C3600170019-OB_CLOUD.umm_json ↗
metadata API · from NASA CMR
Topics
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3600170019-OB_CLOUD | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:harp2 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/clouds | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:pace | 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 |
| 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 |