Increased ice losses from Antarctica detected by CryoSat-2
We use 3 years of Cryosat‐2 radar altimeter data to develop the first comprehensive assessment of Antarctic ice sheet elevation change. This new data set provides near‐continuous (96%) coverage of the entire continent, extending to within 215 km of the South Pole and leading to a fivefold increase i...
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| Veröffentlicht in: | Geophysical research letters 2014-06, Vol.41 (11), p.3899-3905 |
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| container_title | Geophysical research letters |
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| creator | McMillan, Malcolm Shepherd, Andrew Sundal, Aud Briggs, Kate Muir, Alan Ridout, Andrew Hogg, Anna Wingham, Duncan |
| description | We use 3 years of Cryosat‐2 radar altimeter data to develop the first comprehensive assessment of Antarctic ice sheet elevation change. This new data set provides near‐continuous (96%) coverage of the entire continent, extending to within 215 km of the South Pole and leading to a fivefold increase in the sampling of coastal regions where the vast majority of all ice losses occur. Between 2010 and 2013, West Antarctica, East Antarctica, and the Antarctic Peninsula changed in mass by −134 ± 27, −3 ± 36, and −23 ± 18 Gt yr−1, respectively. In West Antarctica, signals of imbalance are present in areas that were poorly surveyed by past missions, contributing additional losses that bring altimeter observations closer to estimates based on other geodetic techniques. However, the average rate of ice thinning in West Antarctica has also continued to rise, and mass losses from this sector are now 31% greater than over the period 2005–2010.
Key Points
Ice losses from West Antarctica are 31% higher than last reported in IMBIE
Snowfall gains and ice dynamical losses in East Antarctica have both diminished
CryoSat surveys 96% of Antarctica with 5 times better sampling of coastal region |
| doi_str_mv | 10.1002/2014GL060111 |
| format | Article |
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Key Points
Ice losses from West Antarctica are 31% higher than last reported in IMBIE
Snowfall gains and ice dynamical losses in East Antarctica have both diminished
CryoSat surveys 96% of Antarctica with 5 times better sampling of coastal region</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1002/2014GL060111</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Altimeters ; altimetry ; Antarctic ice ; Antarctic ice sheet ; Antarctica ; Assessments ; Climate change ; Coastal ; Coastal zone ; CryoSat ; Data ; Elevation ; Estimates ; Geophysics ; Glaciation ; Global warming ; Ice ; Ice sheet mass balance ; Mass ; Missions ; Radar ; Radar altimeters ; Sampling ; Sea level ; South Pole ; Thinning</subject><ispartof>Geophysical research letters, 2014-06, Vol.41 (11), p.3899-3905</ispartof><rights>2014. The Authors.</rights><rights>2014. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5520-b3627f17a44076a7ef5455382a634813f79d72a5799ebff240ad51f9f08dc70f3</citedby><cites>FETCH-LOGICAL-c5520-b3627f17a44076a7ef5455382a634813f79d72a5799ebff240ad51f9f08dc70f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2014GL060111$$EPDF$$P50$$Gwiley$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2014GL060111$$EHTML$$P50$$Gwiley$$Hfree_for_read</linktohtml><link.rule.ids>314,776,780,1411,1427,11493,27901,27902,45550,45551,46384,46443,46808,46867</link.rule.ids></links><search><creatorcontrib>McMillan, Malcolm</creatorcontrib><creatorcontrib>Shepherd, Andrew</creatorcontrib><creatorcontrib>Sundal, Aud</creatorcontrib><creatorcontrib>Briggs, Kate</creatorcontrib><creatorcontrib>Muir, Alan</creatorcontrib><creatorcontrib>Ridout, Andrew</creatorcontrib><creatorcontrib>Hogg, Anna</creatorcontrib><creatorcontrib>Wingham, Duncan</creatorcontrib><title>Increased ice losses from Antarctica detected by CryoSat-2</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>We use 3 years of Cryosat‐2 radar altimeter data to develop the first comprehensive assessment of Antarctic ice sheet elevation change. This new data set provides near‐continuous (96%) coverage of the entire continent, extending to within 215 km of the South Pole and leading to a fivefold increase in the sampling of coastal regions where the vast majority of all ice losses occur. Between 2010 and 2013, West Antarctica, East Antarctica, and the Antarctic Peninsula changed in mass by −134 ± 27, −3 ± 36, and −23 ± 18 Gt yr−1, respectively. In West Antarctica, signals of imbalance are present in areas that were poorly surveyed by past missions, contributing additional losses that bring altimeter observations closer to estimates based on other geodetic techniques. However, the average rate of ice thinning in West Antarctica has also continued to rise, and mass losses from this sector are now 31% greater than over the period 2005–2010.
Key Points
Ice losses from West Antarctica are 31% higher than last reported in IMBIE
Snowfall gains and ice dynamical losses in East Antarctica have both diminished
CryoSat surveys 96% of Antarctica with 5 times better sampling of coastal region</description><subject>Altimeters</subject><subject>altimetry</subject><subject>Antarctic ice</subject><subject>Antarctic ice sheet</subject><subject>Antarctica</subject><subject>Assessments</subject><subject>Climate change</subject><subject>Coastal</subject><subject>Coastal zone</subject><subject>CryoSat</subject><subject>Data</subject><subject>Elevation</subject><subject>Estimates</subject><subject>Geophysics</subject><subject>Glaciation</subject><subject>Global warming</subject><subject>Ice</subject><subject>Ice sheet mass balance</subject><subject>Mass</subject><subject>Missions</subject><subject>Radar</subject><subject>Radar altimeters</subject><subject>Sampling</subject><subject>Sea level</subject><subject>South Pole</subject><subject>Thinning</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><recordid>eNp90U1LI0EQBuBGdsFs1tv-gAEvHhyt6q-a3psENwaCC2t0j02npxsmTjLaPUHz73cksoiHnKoOTxXFW4z9QLhAAH7JAeV0DhoQ8YiN0EhZVgD0hY0AzNBz0sfsW84rABAgcMR-zjY-BZdDXTQ-FG2Xc8hFTN26uNr0Lvm-8a6oQx98P5jlrpikXXfn-pJ_Z1-ja3M4ea9jdv_rejG5Kee_p7PJ1bz0SnEol0JzikhOSiDtKEQllRIVd1rICkUkUxN3iowJyxi5BFcrjCZCVXuCKMbsbL_3KXXP25B7u26yD23rNqHbZotKGU2KKjXQ00901W3TZrjOokEw2qCuDiotOSgupB7U-V75NISSQrRPqVm7tLMI9i1u-zHugfM9f2nasDto7fTPXCENDxizcj_U5D68_h9y6dFqEqTs39upFWqBxB_ITsQ_2pqLBw</recordid><startdate>20140616</startdate><enddate>20140616</enddate><creator>McMillan, Malcolm</creator><creator>Shepherd, Andrew</creator><creator>Sundal, Aud</creator><creator>Briggs, Kate</creator><creator>Muir, Alan</creator><creator>Ridout, Andrew</creator><creator>Hogg, Anna</creator><creator>Wingham, Duncan</creator><general>Blackwell Publishing Ltd</general><general>John Wiley & Sons, Inc</general><scope>BSCLL</scope><scope>24P</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope></search><sort><creationdate>20140616</creationdate><title>Increased ice losses from Antarctica detected by CryoSat-2</title><author>McMillan, Malcolm ; Shepherd, Andrew ; Sundal, Aud ; Briggs, Kate ; Muir, Alan ; Ridout, Andrew ; Hogg, Anna ; Wingham, Duncan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5520-b3627f17a44076a7ef5455382a634813f79d72a5799ebff240ad51f9f08dc70f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Altimeters</topic><topic>altimetry</topic><topic>Antarctic ice</topic><topic>Antarctic ice sheet</topic><topic>Antarctica</topic><topic>Assessments</topic><topic>Climate change</topic><topic>Coastal</topic><topic>Coastal zone</topic><topic>CryoSat</topic><topic>Data</topic><topic>Elevation</topic><topic>Estimates</topic><topic>Geophysics</topic><topic>Glaciation</topic><topic>Global warming</topic><topic>Ice</topic><topic>Ice sheet mass balance</topic><topic>Mass</topic><topic>Missions</topic><topic>Radar</topic><topic>Radar altimeters</topic><topic>Sampling</topic><topic>Sea level</topic><topic>South Pole</topic><topic>Thinning</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>McMillan, Malcolm</creatorcontrib><creatorcontrib>Shepherd, Andrew</creatorcontrib><creatorcontrib>Sundal, Aud</creatorcontrib><creatorcontrib>Briggs, Kate</creatorcontrib><creatorcontrib>Muir, Alan</creatorcontrib><creatorcontrib>Ridout, Andrew</creatorcontrib><creatorcontrib>Hogg, Anna</creatorcontrib><creatorcontrib>Wingham, Duncan</creatorcontrib><collection>Istex</collection><collection>Wiley Open Access</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>McMillan, Malcolm</au><au>Shepherd, Andrew</au><au>Sundal, Aud</au><au>Briggs, Kate</au><au>Muir, Alan</au><au>Ridout, Andrew</au><au>Hogg, Anna</au><au>Wingham, Duncan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Increased ice losses from Antarctica detected by CryoSat-2</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2014-06-16</date><risdate>2014</risdate><volume>41</volume><issue>11</issue><spage>3899</spage><epage>3905</epage><pages>3899-3905</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>We use 3 years of Cryosat‐2 radar altimeter data to develop the first comprehensive assessment of Antarctic ice sheet elevation change. This new data set provides near‐continuous (96%) coverage of the entire continent, extending to within 215 km of the South Pole and leading to a fivefold increase in the sampling of coastal regions where the vast majority of all ice losses occur. Between 2010 and 2013, West Antarctica, East Antarctica, and the Antarctic Peninsula changed in mass by −134 ± 27, −3 ± 36, and −23 ± 18 Gt yr−1, respectively. In West Antarctica, signals of imbalance are present in areas that were poorly surveyed by past missions, contributing additional losses that bring altimeter observations closer to estimates based on other geodetic techniques. However, the average rate of ice thinning in West Antarctica has also continued to rise, and mass losses from this sector are now 31% greater than over the period 2005–2010.
Key Points
Ice losses from West Antarctica are 31% higher than last reported in IMBIE
Snowfall gains and ice dynamical losses in East Antarctica have both diminished
CryoSat surveys 96% of Antarctica with 5 times better sampling of coastal region</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/2014GL060111</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0094-8276 |
| ispartof | Geophysical research letters, 2014-06, Vol.41 (11), p.3899-3905 |
| issn | 0094-8276 1944-8007 |
| language | eng |
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| source | Wiley Online Library - AutoHoldings Journals; Wiley Online Library; Wiley-Blackwell AGU Digital Archive; EZB Electronic Journals Library |
| subjects | Altimeters altimetry Antarctic ice Antarctic ice sheet Antarctica Assessments Climate change Coastal Coastal zone CryoSat Data Elevation Estimates Geophysics Glaciation Global warming Ice Ice sheet mass balance Mass Missions Radar Radar altimeters Sampling Sea level South Pole Thinning |
| title | Increased ice losses from Antarctica detected by CryoSat-2 |
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