DOI: 10.1175/JCLI-D-17-0157.1
Scopus记录号: 2-s2.0-85028506774
论文题名: Relative contributions of atmospheric energy transport and sea ice loss to the recent warm arctic winter
作者: Kim H.-M. ; Kim B.-M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 18 起始页码: 7441
结束页码: 7450
语种: 英语
Scopus关键词: Atmospheric humidity
; Atmospheric movements
; Atmospheric temperature
; Budget control
; Climate change
; Digital storage
; Heat flux
; Moisture
; Sea ice
; Climate variability
; Energy budget/balance
; Long-wave radiation
; Relative contribution
; Surface flux
; Surface temperatures
; Temperature and humidities
; Turbulent heat fluxes
; Ice
英文摘要: The relative contributions of atmospheric energy transport (via heat and moisture advection) and sea ice decline to recent Arctic warming were investigated using high-resolution reanalysis data up to 2017. During the Arctic winter, a variation of downward longwave radiation (DLR) is fundamental in modulating Arctic surface temperature. In the warm Arctic winter, DLR and precipitable water (PW) are increasing over the entire Arctic; however, the major drivers for such increases differ regionally. In areas such as the northern Greenland Sea, increasing DLR and PW are caused mainly by convergence of atmospheric energy transport from lower latitudes. In regions of maximumsea ice retreat (e.g., northern Barents-Kara Seas), continued sea ice melting from previous seasons drive theDLRandPWincreases, consistent with the positive ice-insulation feedback. Distinct local feedbacks between open water and ice-retreat regions were further compared. In open water regions, a reduced ocean-atmosphere temperature gradient caused by atmospheric warming suppresses surface turbulent heat flux (THF) release from the ocean to the atmosphere; thus, surface warming cannot accelerate. Conversely, in ice-retreat regions, sea ice reduction allows the relatively warm ocean to interact with the colder atmosphere via surface THF release. This increases temperature and humidity in the lower troposphere consistent with the positive ice-insulation feedback. The implication of this study is that Arctic warming will slow as the open water fraction increases. Therefore, given sustained greenhouse warming, the roles of atmospheric heat and moisture transport from lower latitudes are likely to become increasingly critical in the future Arctic climate. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48729
Appears in Collections: 气候减缓与适应 气候变化与战略
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作者单位: School of Marine and Atmospheric Sciences, Stony Brook University, State University of New York, Stony Brook, NY, United States; Korea Polar Research Institute, Incheon, South Korea
Recommended Citation:
Kim H.-M.,Kim B.-M.. Relative contributions of atmospheric energy transport and sea ice loss to the recent warm arctic winter[J]. Journal of Climate,2017-01-01,30(18)