globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00382-017-3812-9
Scopus记录号: 2-s2.0-85025681794
论文题名:
Towards a realistic simulation of boreal summer tropical rainfall climatology in state-of-the-art coupled models: role of the background snow-free land albedo
作者: Terray P.; Sooraj K.P.; Masson S.; Krishna R.P.M.; Samson G.; Prajeesh A.G.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期:2018-09-10
起始页码: 3413
结束页码: 3439
语种: 英语
英文关键词: Deserts ; Global coupled models ; Heat low ; Monsoons ; Surface albedo ; Tropical rainfall climatology
Scopus关键词: albedo ; climatology ; computer simulation ; desert ; intertropical convergence zone ; monsoon ; Northern Hemisphere ; rainfall ; summer
英文摘要: State-of-the-art global coupled models used in seasonal prediction systems and climate projections still have important deficiencies in representing the boreal summer tropical rainfall climatology. These errors include prominently a severe dry bias over all the Northern Hemisphere monsoon regions, excessive rainfall over the ocean and an unrealistic double inter-tropical convergence zone (ITCZ) structure in the tropical Pacific. While these systematic errors can be partly reduced by increasing the horizontal atmospheric resolution of the models, they also illustrate our incomplete understanding of the key mechanisms controlling the position of the ITCZ during boreal summer. Using a large collection of coupled models and dedicated coupled experiments, we show that these tropical rainfall errors are partly associated with insufficient surface thermal forcing and incorrect representation of the surface albedo over the Northern Hemisphere continents. Improving the parameterization of the land albedo in two global coupled models leads to a large reduction of these systematic errors and further demonstrates that the Northern Hemisphere subtropical deserts play a seminal role in these improvements through a heat low mechanism. © 2017, Springer-Verlag GmbH Germany.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109326
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Indo-French Cell for Water Sciences, IISc-NIO-IITM–IRD Joint International Laboratory, Indian Institute of Tropical Meteorology (IITM), Pune, 411008, India; Sorbonne Universites (UPMC, Univ Paris 06)-CNRS-IRD-MNHN, LOCEAN Laboratory, 4 place Jussieu, Paris, 75005, France; Centre for Climate Change Research, Indian Institute of Tropical Meteorology, Pune, India; Indian Institute of Tropical Meteorology, Pune, India; Mercator Océan, Ramonville-Saint-Agne, France

Recommended Citation:
Terray P.,Sooraj K.P.,Masson S.,et al. Towards a realistic simulation of boreal summer tropical rainfall climatology in state-of-the-art coupled models: role of the background snow-free land albedo[J]. Climate Dynamics,2018-01-01,50(2018-09-10)
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