New science keywords for NSIDC

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todd.nsidc
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New science keywords for NSIDC

by todd.nsidc » Wed Mar 29, 2023 12:41 pm America/New_York

Good morning,
NSIDC would like to request six science keywords be added to GCMD. We'd like all six to be placed at the Variable Level 2 after EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS >. The keywords are:

... > GLACIER ABLATION
... > GLACIER ACCUMULATION
... > GLACIER AREA
... > GLACIER MASS
... > GLACIER MELT
... > GLACIER REFREEZE

These keywords are for a High Mountain Asia data set that projects these specific parameters through 2100 for glaciers in the Randolph Glacier Inventory. Some suggested descriptions:

GLACIER ABLATION: Mass lost by a glacier from all processes
GLACIER ACCUMULATION: Mass gained by a glacier from all processes
GLACIER AREA: Total area of a glacier
GLACIER MASS: Total mass of a glacier
GLACIER MELT: Mass lost by a glacier due to melting
GLACIER REFREEZE: Mass gained by a glacier due to refreezing

Please let me know if you have any questions or concerns. Thanks!

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GCMD - tstevens
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Re: New science keywords for NSIDC

by GCMD - tstevens » Wed Mar 29, 2023 2:46 pm America/New_York

@todd.nsidc Thank you for your keyword request. We will review it and let you know when it is complete.

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Re: New science keywords for NSIDC

by GCMD - tstevens » Thu Mar 30, 2023 12:12 pm America/New_York

@todd.nsidc
In regard to GLACIER ABLATION and GLACIER ACCUMULATION, we already have
    CRYOSPHERE > GLACIERS/ICE SHEETS > ABLATION ZONES/ACCUMULATION ZONES. See https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/Earth Science/95fbaefd-1afe-4887-a1ba-fc338a8109bb.
      LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > GLACIAL PROCESSES > ABLATION. See https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/all/ad793d5e-b75d-4d3e-a542-ad4b4075b141
        SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > GLACIAL PROCESSES > ABLATION. See https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/all/99db4dca-4d07-48fd-8ba3-393532d04aa6
          TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > ABLATION ZONES/ACCUMULATION ZONES. See https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/all/a994a6f6-cfcd-45d2-95a4-0f8455a9454d

          For consistency with the Science keywords, I suggest that the keywords also get added under:
          TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS. See https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/all/a994a6f6-cfcd-45d2-95a4-0f8455a9454d

          todd.nsidc
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          Re: New science keywords for NSIDC

          by todd.nsidc » Mon Apr 03, 2023 11:51 am America/New_York

          Re: ABLATION ZONES/ACCUMULATION ZONES, these keywords refer to specific areas on a glacier, as opposed to the processes themselves. As to the other instances of ABLATION under different hierachies, NSIDC prefers to use keywords within the CRYOSPHERE hierarchy when possible. And in particular, this data set projects variables related to mass balance for each glacier in the Randolph Glacier Inventory. Its primary use is assessing the status of individual glaciers over the next century and isn't particularly applicable to GEOMORPHIC LANDFORMS/PROCESSES. As such, we feel the most appropriate hierarchy would be CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS >... Of course we have no problem if you would like to also add them under TERRESTRIAL HYDROSPHERE.

          Thanks!

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          Re: New science keywords for NSIDC

          by GCMD - tstevens » Tue Apr 04, 2023 1:37 pm America/New_York

          @todd.nsidc Thank you for the explanation. I have added the keywords under Cryosphere. Please review:
            CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS > GLACIER ABLATION: https://gcmd.earthdata.nasa.gov/kms/concept/b09f0809-2686-4e2b-bacf-e192760ca297?version=draft
              CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS > GLACIER ACCUMULATION: https://gcmd.earthdata.nasa.gov/kms/concept/7b8ad020-7eff-4639-b8c1-8b22e1535c00?version=draft
                CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS > GLACIER AREA: https://gcmd.earthdata.nasa.gov/kms/concept/ae4be026-7471-4301-9264-675accce8340?version=draft
                  CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS > GLACIER MASS: https://gcmd.earthdata.nasa.gov/kms/concept/52d6b4d1-2daf-4e19-8129-c3e2dbf812d0?version=draft
                    CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS >GLACIER MELT :https://gcmd.earthdata.nasa.gov/kms/concept/6bd14a79-ac70-4f99-9107-a4c036d33bd7?version=draft
                      CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS > GLACIER REFREEZE: https://gcmd.earthdata.nasa.gov/kms/concept/399025f7-315e-47db-af48-67771318a70b?version=draft

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                      Re: New science keywords for NSIDC

                      by todd.nsidc » Tue Apr 04, 2023 3:40 pm America/New_York

                      These look great. Thanks!

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                      Re: New science keywords for NSIDC

                      by GCMD - tstevens » Tue Apr 04, 2023 3:55 pm America/New_York

                      Thank you @todd.nsidc . These keywords will be published during our next keyword release on 4/14/23.

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