دورية أكاديمية
أعرض في EDS

Sea-ice freeboard and thickness in the Ross Sea from airborne (IceBridge 2013) and satellite (ICESat 2003–2008) observations

التفاصيل البيبلوغرافية
العنوان: Sea-ice freeboard and thickness in the Ross Sea from airborne (IceBridge 2013) and satellite (ICESat 2003–2008) observations
المؤلفون: Liuxi Tian, Hongjie Xie, Stephen F. Ackley, Jiakui Tang, Alberto M. Mestas-Nuñez, Xianwei Wang
المصدر: Annals of Glaciology, Vol 61, Pp 24-39 (2020)
بيانات النشر: Cambridge University Press, 2020.
سنة النشر: 2020
المجموعة: LCC:Meteorology. Climatology
مصطلحات موضوعية: Ice thickness measurements, remote sensing, sea ice, Meteorology. Climatology, QC851-999
الوصف: NASA's Operation IceBridge mission flew over the Ross Sea, Antarctica (20 and 27 November 2013) and collected data with Airborne Topographic Mapper (ATM) and Digital Mapping System (DMS). Using the DMS and reflectivity of ATM L1B, leads are detected to define local sea level height. The total freeboard is then obtained and converted to ice thickness. The estimated mean sea-ice thickness values are found to be in the 0.48–0.99 m range. Along the N-S track, sea ice was thinner southward rather than northward of the fluxgate, resulting in two peaks of modal thickness: 0.35 m (south) and 0.7 m (north). This supports that new ice produced in coastal polynyas is transported northward by katabatic winds off the ice-shelf. The lowest (2%) elevation method used for freeboard retrieval for ICESat is also tested for ATM data. It is found that the lowest elevation method tends to overestimate freeboard, but mean values are less affected than mode values. Using mean thickness values of ICESat and ATM along the ‘fluxgate’, separating the shelf from the deep ocean, the exported ice volume at this ‘fluxgate’ is found to be higher during the ICESat years (2003–2008) than during the IceBridge year (2013).
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 0260-3055
1727-5644
Relation: https://www.cambridge.org/core/product/identifier/S0260305519000491/type/journal_article; https://doaj.org/toc/0260-3055; https://doaj.org/toc/1727-5644
DOI: 10.1017/aog.2019.49
URL الوصول: https://doaj.org/article/97e67fc1e9a6418ebc139d1f605b482a
رقم الأكسشن: edsdoj.97e67fc1e9a6418ebc139d1f605b482a
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:02603055
17275644
DOI:10.1017/aog.2019.49