期刊
GEOPHYSICAL RESEARCH LETTERS
卷 44, 期 20, 页码 10462-10469出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2017GL075434
关键词
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资金
- European Space Agency's (ESA) [4000120131/17/NL/FF/mg]
- Natural Sciences and Engineering Research Council (NSERC)
- Canada Research Chair (CRC) programs
- Alfred Wegener Institute for Polar and Marine Research (AWI)
- EU
- Environment and Climate Change Canada (ECCC)
- NASA
- ONR
- Natural Environment Research Council [bas0100032] Funding Source: researchfish
- NERC [bas0100032] Funding Source: UKRI
In April 2017, we collected unique, extensive in situ data of sea ice and snow thickness. At 10 sampling sites, located under a CryoSat-2 overpass, between Ellesmere Island and 87.1 degrees N mean and modal total ice thicknesses ranged between 2 to 3.4 m and 1.8 to 2.9 m, respectively. Coincident snow thicknesses ranged between 0.3 to 0.47 m (mean) and 0.1 to 0.5 m (mode). The profile spanned the complete multiyear ice zone in the Lincoln Sea, into the first-year ice zone farther north. Complementary snow thickness measurements near the North Pole showed a mean thickness of 0.31 m. Compared with scarce measurements from other years, multiyear ice was up to 0.75 m thinner than in 2004, but not significantly different from 2011 and 2014. We found excellent agreement with a commonly used snow climatology and with published long-term ice thinning rates. There was reasonable agreement with CryoSat-2 thickness retrievals.
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