DOI: 10.1007/s00382-012-1353-9
Scopus记录号: 2-s2.0-84868706498
论文题名: The impact of Arctic sea ice on the Arctic energy budget and on the climate of the Northern mid-latitudes
作者: Semmler T. ; McGrath R. ; Wang S.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期: 11 起始页码: 2675
结束页码: 2694
语种: 英语
英文摘要: The atmospheric general circulation model EC-EARTH-IFS has been applied to investigate the influence of both a reduced and a removed Arctic sea ice cover on the Arctic energy budget and on the climate of the Northern mid-latitudes. Three 40-year simulations driven by original and modified ERA-40 sea surface temperatures and sea ice concentrations have been performed at T255L62 resolution, corresponding to 79 km horizontal resolution. Simulated changes between sensitivity and reference experiments are most pronounced over the Arctic itself where the reduced or removed sea ice leads to strongly increased upward heat and longwave radiation fluxes and precipitation in winter. In summer, the most pronounced change is the stronger absorption of shortwave radiation which is enhanced by optically thinner clouds. Averaged over the year and over the area north of 70° N, the negative energy imbalance at the top of the atmosphere decreases by about 10 W/m2 in both sensitivity experiments. The energy transport across 70° N is reduced. Changes are not restricted to the Arctic. Less extreme cold events and less precipitation are simulated in sub-Arctic and Northern mid-latitude regions in winter. © 2012 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55319
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Alfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany; Met Éireann, Glasnevin Hill, Dublin 9, Ireland; Swedish Meteorological and Hydrological Institute, Folkborgsvägen 1, 60176 Norrköping, Sweden
Recommended Citation:
Semmler T.,McGrath R.,Wang S.. The impact of Arctic sea ice on the Arctic energy budget and on the climate of the Northern mid-latitudes[J]. Climate Dynamics,2012-01-01,39(11)