气候变化领域集成服务门户(CCPortal): Fram Strait sea ice export affected by thinning: comparing high-resolution simulations and observations

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DOI	10.1007/s00382-019-04699-z
	Fram Strait sea ice export affected by thinning: comparing high-resolution simulations and observations
	Zamani B.; Krumpen T.; Smedsrud L.H.; Gerdes R.
发表日期	2019
ISSN	0930-7575
起始页码	3257
结束页码	3270
卷号	53 期号:2020-05-06
英文摘要	Variability and trends of Fram Strait sea ice area and volume exports are examined for the period of 1990–2010. Simulations from a high-resolution version of the MPIOM model (STORM project) reproduce area and volume export well when compared with NSIDC and ICESat satellite data and in-situ ice thickness observations. The fluxes derived from ice thickness and drift satellite products vary considerably, indicating a high uncertainty in these estimates which we mostly assign to the drift observations. The model captures the observed average seasonal cycles and interannual variability of ice export. The simulated mean annual sea ice area export is 860 × 103 km2 a− 1 (1990–2010), and the correlation with the NSIDC-based area fluxes is r = 0.67. The simulated mean annual volume export is 3.3 × 103 km3 a− 1 (1990–2010), close to the ICESat/ULS values, with a correlation of r = 0.58. The simulated monthly area export has a significant positive trend of + 10% per decade, explained by wind forcing. The major contribution to the robust trend in area export between June and September. Fram Strait ice volume export variability is mainly controlled by ice drift with a dominant role of the Transpolar Drift and, to a lesser extent thickness variability. The area export increase reflects increasing ice-drift speed, but is balanced with a reduced thickness over time when it comes to volume export, giving no significant trend in volume export. The spatial variability of ice drift indicates that the export influences a large area upstream in the Trans-Polar Drift stream, and that high volume export events lead to a thinner thickness there. The central Arctic is well connected drift-wise to the Fram Strait via the Transpolar Drift while for thickness, the region north of Greenland is dominated and controlled by the Fram Strait ice export. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Arctic sea ice mass balance; Fram Strait; High-resolution model; Ocean-sea ice model; Sea ice area export; Sea ice export trends; Sea ice volume export
语种	英语
scopus关键词	atmosphere-ice-ocean system; comparative study; computer simulation; ice drift; ice mechanics; ice thickness; numerical model; sea ice; volume transport; Arctic; Fram Strait; Greenland
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146035
作者单位	Alfred Wegener Institute for Polar and Marine research (AWI), Bremerhaven, Germany; Jacobs University, Bremen, Germany; Geophysical Institute and Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway; University Centre in Svalbard, Longyearbyen, Svalbard and Jan Mayen
推荐引用方式 GB/T 7714	Zamani B.,Krumpen T.,Smedsrud L.H.,et al. Fram Strait sea ice export affected by thinning: comparing high-resolution simulations and observations[J],2019,53(2020-05-06).
APA	Zamani B.,Krumpen T.,Smedsrud L.H.,&Gerdes R..(2019).Fram Strait sea ice export affected by thinning: comparing high-resolution simulations and observations.Climate Dynamics,53(2020-05-06).
MLA	Zamani B.,et al."Fram Strait sea ice export affected by thinning: comparing high-resolution simulations and observations".Climate Dynamics 53.2020-05-06(2019).