DRI:
Drought Research Initiative

DRI Legacy

DRI endeavoured to provide tangible outcomes of its 5 year research effort to the broader scientific community and general public. This intention was addressed through focusing on several intiatives during the wind down of the network.

These efforts are listed below:

DRI:
Drought Research Initiative
About the DRI Data Legacy Data/Metadata Portal
GRACE Total Water Storage Anomalies (TWSA)

Index

Metadata file identifier

  • f2da5bcb-4972-11df-83ef-00219b106224

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    Language

  • eng

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    Contact
    Individual name

  • Sitotaw Yirdaw-Zeleke

    • Contact information
    Address
    Electronic mail address

  • sitotaw@gmail.com

    • Role

  • custodian

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    Metadata date stamp

  • 2010-04-20

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    Metadata standard name

  • ISO 19115

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    Metadata standard version

  • ISO19115:2003/Cor 1 2006

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    Identification Information
    Citation
    Title

  • GRACE Total Water Storage Anomalies (TWSA)

    • Date
    Date

  • 2008-05-01

    • Date Type

  • Publication

    • Abstract

  • In 2002, the Gravity Recovery And Climate Experiment (GRACE) satellite platform was launched to measure, among other things, the gravitational field of the earth. Over its life span, these orbiting satellites have produced time series of mass changes of the earth-atmosphere system. The subsequent outcome of this, after integration over a number of years, is a time series of highly refined images of the earth's mass distribution. In addition to quantifying the static distribution of mass, the month-to-month variation in the earth's gravitational field are indicative of the integrated value of the subsurface total water storage for speci c catchments. Utilization of these natural changes in the earth's gravitational field entails the transformation of the derived GRACE geopotential spherical harmonic coefficients into spatially varying time series estimates of total water storage.

    • Purpose

  • The purpose with which the dataset was developed is to pioneer some of the most pertinent applications of the GRACE remote sensing satellite for hydrological studies over a number of Canadian catchments of varying spatially scales.

    • Status

  • onGoing

    • Resource maintenance
    Maintenance and update frequency

  • unknown

    • Descriptive keywords
    Keyword

  • Terrestrial Hydrosphere> Ground Water

    • Keyword

  • Terrestrial Hydrosphere > Surface Water > Total Surface Water

    • Keyword

  • Terrestrial Hydrosphere > Snow/Ice

    • Keyword

  • GRACE > Gravity Recovery and Climate Experiment

    • Thesaurus name
    Title

  • GCMD

    • Date
    Date

  • 2007-04-01

    • Date Type

  • Publication

    • Spatial representation type

  • grid

    • Language

  • eng

    • Topic category

  • environment

    • Extent
    Geographic element
    West bound longitude

  • -180

    • East bound longitude

  • 180

    • South bound latitude

  • -90

    • North bound latitude

  • 90

    • Temporal element
    Extent
    Begin
  • Time position:

    2002-04-01T00:00:00

    • End
  • Time position:

    2006-05-31T00:00:00

    • Time Interval

  • monthly

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    Distribution information
    Distribution format
    Name

  • GIF - Graphic Interchange Format

    • Version

  • Also data in GRADS format

    • Distributor
    Distributor contact
    Organisation name

  • DRI Data Legacy

    • Contact information
    Online resource
    Linkage

  • http://www.drinetwork.ca

    • Role

  • Distributor

    • Transfer options
    Transfer size (Mb)

  • 3

    • On-line resource
    Linkage

  • http://odin.meteo.mcgill.ca/dri_download/grace_twsa.zip

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    Data quality information
    Scope
    Level

  • Dataset

    • Lineage
    Statement

  • The GRACE dataset is provided at monthly time step with the exception of missing data for May, June, July 2002 and June 2003. Raw Data is distributed by the Center for Space Research (CSR) at the University of Texas, the National Aeronautics and Space Administration (NASA) and the Deutsches Zentrum fur Luft und Raumfahrt (DLR) in Germany.

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