TELLUS_OCEANEOF_NC_JPL_RL05_1
PODAAC-TEOCN-ENJ05
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Abstract
The twin satellites of the Gravity Recovery and Climate Experiment (GRACE), launched in March of 2002, are making detailed monthly measurements of Earth's gravity field changes. These observations can detect regional mass changes of Earth's water reservoirs over land, ice and oceans. GRACE measures gravity variations by relating it to the distance variations between the two satellites, which fly in the same orbit, separated by about 240 km at an altitude of ~450 km. The monthly ocean mass grids contain ocean bottom pressure anomalies from GRACE time-variable gravity data processed by JPL relative to a time-mean, but additionally filtered to project onto model-derived Empirical Orthogonal Functions (EOFs). The EOF-filter can improve the comparison of the GRACE-based ocean bottom pressure to sea surface height from altimetry. The bottom pressure anomalies are given in 'equivalent water thickness' (in NetCDF format), so can be compared to sea level anomalies due to changes of water mass (reference density is 1027 kg/m^3). The time coverage for the monthly grids are determined by GRACE months. For the list of GRACE month dates visit http://grace.jpl.nasa.gov/data/grace-months/. For information please visit http://grace.jpl.nasa.gov/data/get-data/monthly-mass-grids-ocean/.
Data Identification Fields:
Data Dates
Creation | |
Last Revision |
Processing Level
3
Quality
Collection Progress
Not Provided
Related URLs
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- Earth Science
- Solid Earth
- Geodetics/Gravity
- Gravity
- Earth Science
- Oceans
- Ocean Pressure
- Water Pressure
- Ocean Bottom Pressure
Science Keywords
Acquisition Information Fields:
Platforms
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SPACECRAFT
GRACEInstruments
- GRACE KBR
- GRACE SCA
- GRACE ACC
Temporal Information Fields:
Spatial Information Fields:
Coverage Type | Zone Identifier | Geometry | Granule Representation |
---|---|---|---|
HORIZONTAL | CARTESIAN | CARTESIAN |
Location Keywords
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- GEOGRAPHIC REGION
- GLOBAL
Data Centers
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TELLUS
PROCESSORThis data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
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PO.DAAC
ARCHIVERThis data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
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Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, N
ARCHIVERPhysical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA
This data center does not have any addresses listed.
- 818-354-2038
Data Contacts
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David Moroni
Technical ContactDavid Moroni
Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, N
This contact does not have any addresses listed.
This contact does not have any contact mechanisms listed.