DOI: 10.1175/JCLI-D-15-0002.1
Scopus记录号: 2-s2.0-84942919585
论文题名: Arctic energy budget in relation to sea ice variability on monthly-to-annual time scales
作者: Krikken F. ; Hazeleger W.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 16 起始页码: 6335
结束页码: 6350
语种: 英语
Scopus关键词: Budget control
; Climate models
; Climatology
; Heat flux
; Incident solar radiation
; Sea ice
; Solar radiation
; Arctic
; Atmospheric response
; Climate prediction
; Climate variability
; Energy balance components
; Multiple reflections
; Natural variability
; Seasonal forecasting
; Ice
; arctic environment
; atmosphere-ice-ocean system
; climate modeling
; cloud cover
; energy budget
; sea ice
; temporal variation
; timescale
; top of atmosphere
; weather forecasting
; Arctic Ocean
英文摘要: The large decrease in Arctic sea ice in recent years has triggered a strong interest in Arctic sea ice predictions on seasonal-to-decadal time scales. Hence, it is important to understand physical processes that provide enhanced predictability beyond persistence of sea ice anomalies. This study analyzes the natural variability of Arctic sea ice from an energy budget perspective, using 15 climate models from phase 5 of CMIP (CMIP5), and compares these results to reanalysis data. The authors quantify the persistence of sea ice anomalies and the cross correlation with the surface and top-of-atmosphere energy budget components. The Arctic energy balance components primarily indicate the important role of the seasonal ice-albedo feedback, through which sea ice anomalies in the melt season reemerge in the growth season. This is a robust anomaly reemergence mechanism among all 15 climate models. The role of the ocean lies mainly in storing heat content anomalies in spring and releasing them in autumn. Ocean heat flux variations play only a minor role. Confirming a previous (observational) study, the authors demonstrate that there is no direct atmospheric response of clouds to spring sea ice anomalies, but a delayed response is evident in autumn. Hence, there is no cloud-ice feedback in late spring and summer, but there is a cloud-ice feedback in autumn, which strengthens the ice-albedo feedback. Anomalies in insolation are positively correlated with sea ice variability. This is primarily a result of reduced multiple reflection of insolation due to an albedo decrease. This effect counteracts the ice-albedo effect up to 50%. ERA-Interim and Ocean Reanalysis System 4 (ORAS4) confirm the main findings from the climate models. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50579
Appears in Collections: 气候变化事实与影响
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作者单位: Royal Netherlands Meteorological Institute, De Bilt, Netherlands; Wageningen University, Wageningen, Netherlands
Recommended Citation:
Krikken F.,Hazeleger W.. Arctic energy budget in relation to sea ice variability on monthly-to-annual time scales[J]. Journal of Climate,2015-01-01,28(16)