January 14, 2021 Dataset Open Access

Kern, Stefan

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  <identifier identifierType="DOI">10.25592/uhhfdm.8508</identifier>
  <creators>
    <creator>
      <creatorName>Kern, Stefan</creatorName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-7281-3746</nameIdentifier>
      <affiliation>Integrated Climate Data Center (ICDC), Center for Earth System Research and Sustainability (CEN), University of Hamburg, Hamburg, Germany</affiliation>
    </creator>
  </creators>
  <titles>
    <title>ESA-SICCI2 Arctic Ocean Winter-Time Monthly Sea-Ice Volume Timeseries</title>
  </titles>
  <publisher>Universität Hamburg</publisher>
  <publicationYear>2021</publicationYear>
  <subjects>
    <subject>Climate</subject>
    <subject>Marine cryosphere</subject>
    <subject>Arctic ocean</subject>
    <subject>Sea ice</subject>
    <subject>Satellite remote sensing</subject>
    <subject>Sea ice volume</subject>
    <subject>ESA-CCI</subject>
    <subject>SICCI</subject>
    <subject>ICDC</subject>
    <subject subjectScheme="url">https://www.oecd.org/science/inno/38235147.pdf</subject>
    <subject subjectScheme="url">https://www.oecd.org/science/inno/38235147.pdf</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2021-01-14</date>
  </dates>
  <language>en</language>
  <resourceType resourceTypeGeneral="Dataset"/>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://www.fdr.uni-hamburg.de/record/8508</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsDerivedFrom">http://catalogue.ceda.ac.uk/uuid/f4c34f4f0f1d4d0da06d771f6972f180</relatedIdentifier>
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    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsDerivedFrom">10.5285/f17f146a31b14dfd960cde0874236ee5</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsDerivedFrom">10.15770/EUM_SAF_OSI_0008</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsPartOf">10.25592/uhhfdm.8507</relatedIdentifier>
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  <version>2.0_fv0.02</version>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;&lt;strong&gt;Abstract:&lt;/strong&gt; ESA-CCI sea-ice-ecv phase2 project Envisat and CryoSat-2 monthly mean gridded Arctic sea-ice thickness and uncertainty estimates are combined with daily gridded Arctic satellite passive microwave sea-ice concentration observations and their uncertainties using the SICCI-2 algorithm derived within the same project to obtain an estimate of the Arctic Ocean monthly mean sea-ice volume during winter (October through April). The observational data gap centred at the pole is filled via interpolation as described in the retrieval report: &lt;a href="https://icdc.cen.uni-hamburg.de/fileadmin/user_upload/ESA_Sea-Ice-ECV_Phase2/SICCI_Phase2_SIV-Retrieval_Report_v02.pdf"&gt;https://icdc.cen.uni-hamburg.de/fileadmin/user_upload/ESA_Sea-Ice-ECV_Phase2/SICCI_Phase2_SIV-Retrieval_Report_v02.pdf&lt;/a&gt;. This report does also describe how uncertainties are estimated, and how the Envisat data are bias-corrected with respect to the CryoSat-2 data. The NSIDC sector Arctic Ocean can be viewed, e.g. from the following netCDF file &lt;a href="https://icdc.cen.uni-hamburg.de/fileadmin/user_upload/icdc_Bilder/asi_sic/NSIDC-25km-grid__Arctic-SeaIceOutlook_region_masks__GridCellArea__UHAM-ICDC__fv0.01.nc"&gt;https://icdc.cen.uni-hamburg.de/fileadmin/user_upload/icdc_Bilder/asi_sic/NSIDC-25km-grid__Arctic-SeaIceOutlook_region_masks__GridCellArea__UHAM-ICDC__fv0.01.nc&lt;/a&gt; or &lt;a href="https://www.arcus.org/files/page/documents/28201/sio_mask.nc"&gt;https://www.arcus.org/files/page/documents/28201/sio_mask.nc&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Table of contents:&lt;/strong&gt; sea ice volume; sea ice volume retrieval error&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Technical Info:&lt;/strong&gt; dimension: 105 rows resulting from 15 winters times seven months (October through April); temporalExtent_startDate: 2002-10-01; temporalExtent_endDate: 2017-04-30; temporalResolution: monthly; spatialResolution: none; spatialResolutionUnit: none; horizontalResolutionXdirection: none; horizontalResolutionXdirectionUnit: none; horizontalResolutionYdirection: none; horizontalResolutionYdirectionUnit: none; verticalResolution: none; verticalResolutionUnit: none; verticalStart: none; verticalEnd: none; instrumentName: SIRAL, RA-2; instrumentType: radar altimeter; instrumentLocation: Environmental Satellite (Envisat), CryoSat-2; instrumentProvider: various, ESA&amp;nbsp;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Methods:&lt;/strong&gt; &lt;a href="https://icdc.cen.uni-hamburg.de/fileadmin/user_upload/ESA_Sea-Ice-ECV_Phase2/SICCI_Phase2_SIV-Retrieval_Report_v02.pdf"&gt;https://icdc.cen.uni-hamburg.de/fileadmin/user_upload/ESA_Sea-Ice-ECV_Phase2/SICCI_Phase2_SIV-Retrieval_Report_v02.pdf&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Units:&lt;/strong&gt; km&lt;sup&gt;3&lt;/sup&gt;; km&lt;sup&gt;3&lt;/sup&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;geoLocations: &lt;/strong&gt;westBoundLongitude: -180.0 degrees East; eastBoundLongitude: 180.0 degrees East; southBoundLatitude: 60.0 degrees North; northBoundLatitude: 90.0 degrees North; geoLocationPlace: Arctic Ocean&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Size:&lt;/strong&gt; 1 file with three semikolon-separated columns; 105 rows&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Format:&lt;/strong&gt; ascii text&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;DataSources: &lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;&lt;a href="http://catalogue.ceda.ac.uk/uuid/f4c34f4f0f1d4d0da06d771f6972f180"&gt;http://catalogue.ceda.ac.uk/uuid/f4c34f4f0f1d4d0da06d771f6972f180&lt;/a&gt; (last accessed: 2018-05-20)&lt;/p&gt;

&lt;p&gt;&lt;a href="http://catalogue.ceda.ac.uk/uuid/ff79d140824f42dd92b204b4f1e9e7c2"&gt;http://catalogue.ceda.ac.uk/uuid/ff79d140824f42dd92b204b4f1e9e7c2&lt;/a&gt; (last accessed: 2018-05-20)&lt;/p&gt;

&lt;p&gt;&lt;a href="https://doi.org/10.5285/f17f146a31b14dfd960cde0874236ee5"&gt;https://doi.org/10.5285/f17f146a31b14dfd960cde0874236ee5&lt;/a&gt; (last accessed: 2018-05-20)&lt;/p&gt;

&lt;p&gt;&lt;a href="https://doi.org/10.15770/EUM_SAF_OSI_0008"&gt;https://doi.org/10.15770/EUM_SAF_OSI_0008&lt;/a&gt; (last accessed: 2018-05-20)&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Contact:&lt;/strong&gt; &lt;a href="mailto:stefan.kern@uni-hamburg.de"&gt;stefan.kern (at) uni-hamburg.de&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Web page:&lt;/strong&gt; &lt;a href="https://icdc.cen.uni-hamburg.de/en/esa-cci-sea-ice-ecv0.html"&gt;https://icdc.cen.uni-hamburg.de/en/esa-cci-sea-ice-ecv0.html&lt;/a&gt;&lt;/p&gt;</description>
    <description descriptionType="Other">- The snow depths used to convert the altimetric freeboard estimates into sea-ice thickness reflect climatological conditions; it is likely that the influence of inter-annual variation in snow depth on the freeboard-to-thickness conversion are not adequately represented.

- Users are recommended to carefully read the documentation of this data set to understand the limitations arising from the required interpolation of sea-ice thickness and sea-ice concentration values across the observational data gap around the North Pole. 

- Users are recommended to read the paper describing freeboard estimation and freeboard-to-thickness conversion methodologies that apply to the product: Paul, et al., The Cryosphere, 12(7), https://doi.org/10.5194/tc-12-2437-2018

- A similar sea-ice volume data set has been derived for the Antarctic. It covers all months of the same period, i.e. years 2002-2017, but is less accurate than in the Arctic due to limitations in the freeboard retrieval; interested users can contact Stefan Kern to obtain this data set.</description>
    <description descriptionType="Other">{"references": ["Paul, et al., The Cryosphere, 12(7), https://doi.org/10.5194/tc-12-2437-2018", "Lavergne, et al., The Cryosphere, 13(1), https://doi.org/10.5194/tc-13-49-2019"]}</description>
  </descriptions>
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