DOI: 10.1002/joc.5988
Scopus记录号: 2-s2.0-85060749662
论文题名: Atmospheric moisture transport between mid-latitudes and the Arctic: Regional, seasonal and vertical distributions
作者: Naakka T. ; Nygård T. ; Vihma T. ; Sedlar J. ; Graversen R.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
语种: 英语
英文关键词: climate
; humidity
; moisture transport
; polar
; reanalysis
; troposphere
Scopus关键词: Atmospheric humidity
; Moisture
; Troposphere
; Water vapor
; climate
; Hydrological condition
; Interannual variation
; Moisture transport
; polar
; Reanalysis
; Temporal and spatial variation
; Vertical distributions
; Atmospheric movements
英文摘要: Horizontal moisture transport has a manifold role in the Arctic climate system as it distributes atmospheric water vapour and thereby shapes the radiative and hydrological conditions. Moisture transport between the Arctic and the mid-latitudes was examined based on ERA-Interim reanalysis. The meridional net transport is only a small part of the water vapour exchange between the Arctic and mid-latitudes and does not give a complete view of temporal and spatial variations in the transport. Especially near the surface, most of the northwards moisture transport is balanced by the southwards transport, and therefore the meridional net moisture transport at 60°–70°N peaks approximately at 100 hPa higher altitude than the northwards and southwards moisture transports. The total moisture transport (sum of absolute northwards and southwards moisture transports) has a much larger seasonal variation than the net transport (mean meridional transport), and the strength of the total transport is related to atmospheric humidity rather than the wind field. Strong individual moisture transport events contribute to a large part of the northwards moisture transport. This is consistent with the result that the net moisture transport is essentially generated by temporal variations of moisture fluxes. The moisture transport due to stationary zonal variation in the mass flux mostly defines the spatial distribution of the meridional moisture transport. The seasonal cycle of the net moisture transport is related to the seasonal cycle of transient eddy moisture transport but inter-annual variations of the net moisture transport are largely influenced by the stationary eddy moisture transport. © 2019 Royal Meteorological Society
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116649
Appears in Collections: 全球变化的国际研究计划
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作者单位: Meteorological Research, Finnish Meteorological Institute, Helsinki, Finland; Department of Meteorology, Stockholm University, Stockholm, Sweden; Cooperative Institute for Research in Environmental Science, University of Colorado Boulder, Boulder, CO, United States; Department of Physics and Technology, University of Tromsø, Tromsø, Norway
Recommended Citation:
Naakka T.,Nygård T.,Vihma T.,et al. Atmospheric moisture transport between mid-latitudes and the Arctic: Regional, seasonal and vertical distributions[J]. International Journal of Climatology,2019-01-01