TELLUS_OCEANEOF_NC_JPL_RL05_1

PODAAC-TEOCN-ENJ05

Version 1
  • 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/GraceMonths/ . For information please visit http://grace.jpl.nasa.gov/data/GRACEMONTHLYMASSGRIDSOCEAN/ .

Data Identification Fields:

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    Data Dates
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    Processing Level

    3

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    Not Provided

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • SOLID EARTH
    • GEODETICS/GRAVITY
    • GRAVITY
    • EARTH SCIENCE
    • OCEANS
    • OCEAN PRESSURE
    • WATER PRESSURE
    • OCEAN BOTTOM PRESSURE

Acquisition Information Fields:

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Platforms
  • unknown
    GRACE
    Instruments
    • GRACE SCA
    • GRACE KBR
    • GRACE ACC

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN CARTESIAN
Location Keywords
    • GEOGRAPHIC REGION
    • GLOBAL

Data Centers

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  • TELLUS
    PROCESSOR

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  • PO.DAAC
    ARCHIVER

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  • Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, N
    ARCHIVER
    Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA

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Data Contacts

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    Technical Contact
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    Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, N

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