Data · collection
Cloud Amount Statistics (CMATRIX) from the NIMBUS-7 Temperature Humidity Infrared Radiometer (THIR)
Listed in NASA Earthdata CMR
The CMATRIX cloud data contain daytime and nighttime cloud amounts in percent cloud cover, cloud amount in low, middle, and high altitude categories, cirrus and deep convective cloud amount, and radiances of cloud and clear scenes.
Description
Both daily and monthly means are included. The CMATRIX data, available on the 500 km x 500 km Earth Radiation Budget (ERB) target area grid, also includes the variances of cloud amounts and radiance.
This data set was derived from the Nimbus-7 Temperature Humidity Infrared Radiometer (THIR) data, the Nimbus-7 Total Ozone Mapping Spectrometer (TOMS) inferred reflectivity, surface temperature, climatological temperature lapse rate, and snow/ice data from U. S. Air Force nephanalysis. The weekly tapes, NCLE, were used to generate CMATRIX tape. There is one CMATRIX tape per Nimbus-7 data year (November - October) and each data file contains one month worth of data.
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Other independent data sets from the Nimbus-7 ERB and SMMR may be of interest as well as the ISCCP cloud data.
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214584904-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214584904-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
Provenance · 1 source records, 15 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214584904-SCIOPS | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:spectrometers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:thir | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:toms | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-radiation/reflectance/cloud-reflectance | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/clouds/cloud-properties/cloud-frequency | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/clouds/cloud-types | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/infrared-wavelengths/infrared-flux | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/visible-wavelengths/visible-flux | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:nimbus-7 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| 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 |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |