Data · collection
Long wavelength Earth gravity field model series from satellite tracking data only, spherical harmonic representation
Listed in NASA Earthdata CMR
GRIM4-S global gravity field models are based on the analysis of satellite orbit perturbations from optical, doppler, laser and GPS-SST tracking data of about 30 satellites.
Description
The models are given as a set of fully normalized spherical harmonic coefficient complete to degree and order 50 with for the most recent models higher degree terms within resonant orders. The first solution GRIM4-S1 includes from 27 satellites.
This model has been augmented by additional data leading to the GRIM4-S2 (29 satellites), GRIM4-S3 (30 satellites) and GRIM4-S4 (32 satellites) solutions.
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214585736-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214585736-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Gravitational Field · Marine Gravity Field · Not provided · Orbital Characteristics · Satellite Orbits/Revolution
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214585736-SCIOPS | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/marine-geophysics/marine-gravity-field | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/gravity-gravitational-field/gravitational-field | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/gravity-gravitational-field/satellite-orbits-revolution | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/platform-characteristics/orbital-characteristics | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | 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 |