DOI: 10.1002/2017MS001252
Scopus记录号: 2-s2.0-85042452065
论文题名: The Impact of Air-Sea Interactions on the Representation of Tropical Precipitation Extremes
作者: Hirons L ; C ; , Klingaman N ; P ; , Woolnough S ; J
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2018
卷: 10, 期: 2 起始页码: 550
结束页码: 559
语种: 英语
英文关键词: Precipitation (meteorology)
; Surface waters
; Tropics
; Air sea interactions
; Extreme precipitation
; Ocean atmosphere
; Precipitation extremes
; Precipitation variability
; Sea surface temperatures
; Tropical convection
; Tropical precipitation
; Oceanography
英文摘要: The impacts of air-sea interactions on the representation of tropical precipitation extremes are investigated using an atmosphere-ocean-mixed-layer coupled model. The coupled model is compared to two atmosphere-only simulations driven by the coupled-model sea-surface temperatures (SSTs): one with 31 day running means (31 d), the other with a repeating mean annual cycle. This allows separation of the effects of interannual SST variability from those of coupled feedbacks on shorter timescales. Crucially, all simulations have a consistent mean state with very small SST biases against present-day climatology. 31d overestimates the frequency, intensity, and persistence of extreme tropical precipitation relative to the coupled model, likely due to excessive SST-forced precipitation variability. This implies that atmosphere-only attribution and time-slice experiments may overestimate the strength and duration of precipitation extremes. In the coupled model, air-sea feedbacks damp extreme precipitation, through negative local thermodynamic feedbacks between convection, surface fluxes, and SST. © 2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75656
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Department of Meteorology, National Centre for Atmospheric Science, University of Reading, Reading, Berkshire, United Kingdom; Department of Meteorology, University of Reading, Reading, Berkshire, United Kingdom
Recommended Citation:
Hirons L,C,, Klingaman N,et al. The Impact of Air-Sea Interactions on the Representation of Tropical Precipitation Extremes[J]. Journal of Advances in Modeling Earth Systems,2018-01-01,10(2)