{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,8,6]],"date-time":"2024-08-06T05:14:16Z","timestamp":1722921256445},"reference-count":26,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2016,4,9]],"date-time":"2016-04-09T00:00:00Z","timestamp":1460160000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"Satellite altimetry is the only method to monitor global changes in sea-ice thickness and volume over decades. Such missions (e.g., ERS, Envisat, ICESat, CryoSat-2) are based on the conversion of freeboard into thickness by assuming hydrostatic equilibrium. Freeboard, the height of the ice above the water level, is therefore a crucial parameter. Freeboard is a relative quantity, computed by subtracting the instantaneous sea surface height from the sea-ice surface elevations. Hence, the impact of geophysical range corrections depends on the performance of the interpolation between subsequent leads to retrieve the sea surface height, and the magnitude of the correction. In this study, we investigate this impact by considering CryoSat-2 sea-ice freeboard retrievals in autumn and spring. Our findings show that major parts of the Arctic are not noticeably affected by the corrections. However, we find areas with very low lead density like the multiyear ice north of Canada, and landfast ice zones, where the impact can be substantial. In March 2015, 7.17% and 2.69% of all valid CryoSat-2 freeboard grid cells are affected by the ocean tides and the inverse barometric correction by more than 1 cm. They represent by far the major contributions among the impacts of the individual corrections.<\/jats:p>","DOI":"10.3390\/rs8040317","type":"journal-article","created":{"date-parts":[[2016,4,11]],"date-time":"2016-04-11T16:07:36Z","timestamp":1460390856000},"page":"317","source":"Crossref","is-referenced-by-count":20,"title":["The Impact of Geophysical Corrections on Sea-Ice Freeboard Retrieved from Satellite Altimetry"],"prefix":"10.3390","volume":"8","author":[{"ORCID":"http:\/\/orcid.org\/0000-0001-6928-7757","authenticated-orcid":false,"given":"Robert","family":"Ricker","sequence":"first","affiliation":[{"name":"Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Bussestrasse 24, 27570 Bremerhaven, Germany"}]},{"given":"Stefan","family":"Hendricks","sequence":"additional","affiliation":[{"name":"Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Bussestrasse 24, 27570 Bremerhaven, Germany"}]},{"given":"Justin","family":"Beckers","sequence":"additional","affiliation":[{"name":"Department of Earth & Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada"}]}],"member":"1968","published-online":{"date-parts":[[2016,4,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3469","DOI":"10.1029\/1999GL010863","article-title":"Thinning of the Arctic sea-ice cover","volume":"26","author":"Rothrock","year":"1999","journal-title":"Geophys. Res. Lett."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"L22502","DOI":"10.1029\/2008GL035710","article-title":"Circumpolar thinning of Arctic sea ice following the 2007 record ice extent minimum","volume":"35","author":"Giles","year":"2008","journal-title":"Geophys. Res. Lett."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Kwok, R., Cunningham, G.F., Wensnahan, M., Rigor, I., Zwally, H.J., and Yi, D. (2009). Thinning and volume loss of the Arctic Ocean sea ice cover: 2003\u20132008. J. Geophys. Res., 114.","DOI":"10.1029\/2009JC005312"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"269","DOI":"10.5194\/tc-9-269-2015","article-title":"Arctic sea ice thickness loss determined using subsurface, aircraft, and satellite observations","volume":"9","author":"Lindsay","year":"2015","journal-title":"Cryosphere"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1607","DOI":"10.5194\/tc-8-1607-2014","article-title":"Sensitivity of CryoSat-2 Arctic sea-ice freeboard and thickness on radar-waveform interpretation","volume":"8","author":"Ricker","year":"2014","journal-title":"Cryosphere"},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Lohmann, G. (2014). Towards an Interdisciplinary Approach in Earth System Science: Advances of a Helmholtz Graduate Research School, Springer.","DOI":"10.1007\/978-3-319-13865-7"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"732","DOI":"10.1002\/grl.50193","article-title":"CryoSat-2 estimates of Arctic sea ice thickness and volume","volume":"40","author":"Laxon","year":"2013","journal-title":"Geophys. Res. Lett."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1217","DOI":"10.5194\/tc-8-1217-2014","article-title":"An improved CryoSat-2 sea ice freeboard retrieval algorithm through the use of waveform fitting","volume":"8","author":"Kurtz","year":"2014","journal-title":"Cryosphere"},{"key":"ref_9","first-page":"20140157","article-title":"Variability of Arctic sea ice thickness and volume from CryoSat-2","volume":"373","author":"Kwok","year":"2015","journal-title":"Philos. Trans. R. Soc. Lond. A: Math. Phys. Eng. Sci."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"643","DOI":"10.1038\/ngeo2489","article-title":"Increased Arctic sea ice volume after anomalously low melting in 2013","volume":"8","author":"Tilling","year":"2015","journal-title":"Nat. Geosci."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Ricker, R., Hendricks, S., Perovich, D.K., Helm, V., and Gerdes, R. (2015). Impact of snow accumulation on CryoSat-2 range retrievals over Arctic sea ice: An observational approach with buoy data. Geophys. Res. Lett.","DOI":"10.1002\/2015GL064081"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"5014","DOI":"10.1002\/2014GL060993","article-title":"Simulated effects of a snow layer on retrieval of CryoSat-2 sea ice freeboard","volume":"41","author":"Kwok","year":"2014","journal-title":"Geophys. Res. Lett."},{"key":"ref_13","unstructured":"Skourup, H., Einarsson, I., Sandberg, L., Forsberg, R., Stenseng, L., Hendricks, S., Helm, V., and Davidson, M. (2011, January 5\u20139). ESA CryoVEx 2011 airborne campaign for CryoSat-2 calibration and validation. Proceedings of the 2011 AGU Fall Meeting, San Francisco, CA, USA."},{"key":"ref_14","unstructured":"European Space Agency (2011). L1B Products Format Specification, ESA. CS-RS-ACS-GS-5106."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"394","DOI":"10.1007\/s10236-006-0086-x","article-title":"Modelling the global ocean tides: Modern insights from FES2004","volume":"56","author":"Lyard","year":"2006","journal-title":"Ocean Dyn."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1111\/j.1365-246X.1971.tb01803.x","article-title":"New computations of the tide-generating potential","volume":"23","author":"Cartwright","year":"1971","journal-title":"Geophys. J. R. Astron. Soc."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"253","DOI":"10.1111\/j.1365-246X.1973.tb03420.x","article-title":"Corrected tables of tidal harmonics","volume":"33","author":"Cartwright","year":"1973","journal-title":"Geophys. J. R. Astron. Soc."},{"key":"ref_18","unstructured":"Jentzsch, G. (1997). Tidal Phenomena, Springer."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"761","DOI":"10.1029\/RG010i003p00761","article-title":"Deformation of the Earth by surface loads","volume":"10","author":"Farrell","year":"1972","journal-title":"Rev. Geophys."},{"key":"ref_20","unstructured":"AVISO+. Available online: http:\/\/www.aviso.oceanobs.com\/es\/data\/index.html."},{"key":"ref_21","unstructured":"Kruizinga, G.L.H. (1997). Validation and Applications of Satellite Radar Altimetry, University of Texas."},{"key":"ref_22","unstructured":"Fu, L.L., and Cazenave, A. (2000). Satellite Altimetry and Earth Sciences: A Handbook of Techniques and Applications, Academic Press."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1029\/96RG03037","article-title":"Atmospheric loading and the oceanic \u201cinverted barometer\u201d effect","volume":"35","author":"Wunsch","year":"1997","journal-title":"Rev. Geophys."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1539","DOI":"10.5194\/tc-8-1539-2014","article-title":"Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2","volume":"8","author":"Helm","year":"2014","journal-title":"Cryosphere"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Andersen, O., Knudsen, P., and Stenseng, L. (2015, January 13). The DTU13 MSS (Mean Sea Surface) and MDT (Mean Dynamic Topography) from 20 years of satellite altimetry. Proceeding of the International Association of Geodesy Symposia, Heidelberg, Germany.","DOI":"10.1007\/1345_2015_182"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"32","DOI":"10.3390\/ijgi1010032","article-title":"EASE-Grid 2.0: Incremental but Significant Improvements for Earth-Gridded Data Sets","volume":"1","author":"Brodzik","year":"2012","journal-title":"ISPRS Int. J. Geo-Inf."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/8\/4\/317\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,6,4]],"date-time":"2024-06-04T19:46:54Z","timestamp":1717530414000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/8\/4\/317"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,4,9]]},"references-count":26,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2016,4]]}},"alternative-id":["rs8040317"],"URL":"https:\/\/doi.org\/10.3390\/rs8040317","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2016,4,9]]}}}