{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T03:58:06Z","timestamp":1760241486776,"version":"build-2065373602"},"reference-count":38,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2018,4,1]],"date-time":"2018-04-01T00:00:00Z","timestamp":1522540800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["41531069, 41776195"],"award-info":[{"award-number":["41531069, 41776195"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The waveform retracking algorithm is a key factor that affects the accuracy of elevation change from satellite altimetry over an ice sheet. The elevation change results from four waveform retracker algorithms (ICE1\/ICE2\/Sea Ice\/OCEAN) provided by the Satellite with ARgos and ALtiKa (SARAL\/ALtiKa) data were compared using repeated SARAL data between March 2013 and April 2016 to determine the optimal retracker in the crossovers of descending and ascending orbits over a Greenland ice sheet (GrIS). The ICE1 provided slightly better results than the three other algorithms with the lowest standard deviation (SD) of 0.30 m year\u22121. Further comparison was also conducted between the Satellite with ARgos and ALtiKa (SARAL) and Operation ICEBridge laser data, thereby indicating that ICE1 was the best retracker with an Root Mean Square Error (RMSE) of 0.43 m year\u22121. The distribution of elevation change rate and uncertainties over Greenland from SARAL were presented using the selected ICE1 retracker with a volume loss of 40    \u00b1    12 km3 year\u22121. This volume loss did not include the fast-changing coastal areas of the GrIS. A large thinning was observed in Jakobshavn Isbr\u00e6, and a trend that extended far inland was also found from 2013\u20132016. Furthermore, a melting ice sheet was observed in the large areas northwest over the GrIS.<\/jats:p>","DOI":"10.3390\/rs10040539","type":"journal-article","created":{"date-parts":[[2018,4,2]],"date-time":"2018-04-02T12:32:20Z","timestamp":1522672340000},"page":"539","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Elevation Change Derived from SARAL\/ALtiKa Altimetric Mission: Quality Assessment and Performance of the Ka-Band"],"prefix":"10.3390","volume":"10","author":[{"given":"Quanming","family":"Yang","sequence":"first","affiliation":[{"name":"Chinese Antarctic Center of Surveying and Mapping, Wuhan University, 129 Luoyu Road, Wuhan 430079, China"}]},{"given":"Yuande","family":"Yang","sequence":"additional","affiliation":[{"name":"Chinese Antarctic Center of Surveying and Mapping, Wuhan University, 129 Luoyu Road, Wuhan 430079, China"}]},{"given":"Zemin","family":"Wang","sequence":"additional","affiliation":[{"name":"Chinese Antarctic Center of Surveying and Mapping, Wuhan University, 129 Luoyu Road, Wuhan 430079, China"}]},{"given":"Baojun","family":"Zhang","sequence":"additional","affiliation":[{"name":"Chinese Antarctic Center of Surveying and Mapping, Wuhan University, 129 Luoyu Road, Wuhan 430079, China"}]},{"given":"Hu","family":"Jiang","sequence":"additional","affiliation":[{"name":"Chinese Antarctic Center of Surveying and Mapping, Wuhan University, 129 Luoyu Road, Wuhan 430079, China"}]}],"member":"1968","published-online":{"date-parts":[[2018,4,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1445","DOI":"10.1126\/science.342.6165.1445-a","article-title":"Sea-level rise by 2100","volume":"342","author":"Church","year":"2013","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"963","DOI":"10.1126\/science.1124190","article-title":"The Greenland ice sheet and global sea-level rise","volume":"311","author":"Dowdeswell","year":"2006","journal-title":"Science"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"984","DOI":"10.1126\/science.1178176","article-title":"Partitioning recent Greenland mass loss","volume":"326","author":"Broeke","year":"2009","journal-title":"Science"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"986","DOI":"10.1126\/science.1121381","article-title":"Changes in the velocity structure of the Greenland ice sheet","volume":"311","author":"Rignot","year":"2006","journal-title":"Science"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Tapley, B.D., Bettadpur, S., Watkins, M., and Reigber, C. 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