DOI: 10.1175/JCLI-D-18-0378.1
Scopus记录号: 2-s2.0-85060541883
论文题名: Reexamination of the Late Pliocene climate over China using a 25-km resolution general circulation model
作者: Yan Q. ; Wei T. ; Zhang Z.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2019
卷: 32, 期: 3 起始页码: 897
结束页码: 916
语种: 英语
英文关键词: Climate models
; Climate records
; Paleoclimate
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Climate models
; Gas emissions
; Greenhouse gases
; Oceanography
; Petroleum reservoir evaluation
; Surface waters
; Annual mean precipitation
; Climate record
; Climatological distributions
; Community atmosphere model
; General circulation model
; Land-sea thermal contrasts
; Paleoclimates
; Sea surface temperature (SST)
; Climate change
英文摘要: Simulations of past warm climate provide an opportunity to better understand how the climate system may respond to increased greenhouse gas emissions. Using the ~25-km-resolution Community Atmosphere Model, version 4 (CAM4), we examine climate change over China in the Late Pliocene warm period (3.264-3.025 Ma) and further explore the influences of different sea surface temperature (SST) forcings and model horizontal resolutions. Initial evaluation shows that the high-resolution CAM4 performs well in capturing the climatological distribution of present-day temperature, precipitation, and low-level monsoon circulations over China. Based on the standard Pliocene Research, Interpretation and Synoptic Mapping (version 4; PRISM4) boundary conditions, CAM4 predicts an increase of annual mean temperature by ~0.5°C over China in the Late Pliocene relative to the preindustrial era, with the greatest warming in northwest China but cooling in southwest China. Enhanced annual mean precipitation is observed in the Late Pliocene over most of China except for northwest China where precipitation is decreased. The East Asian summer (winter) monsoon is intensified (weakened) in the Late Pliocene as suggested by geological evidence, which is attributed to the enhanced (reduced) land-sea thermal contrast. The East Asian monsoon domain exhibits a northwestward expansion in the Late Pliocene, especially over the Tibetan Plateau. Additionally, our results indicate that the modeled climate change is sensitive to the Late Pliocene SST forcings and model resolution. Particularly, different SST forcings [PRISM4-based vs Pliocene Model Intercomparison Project (PlioMIP)-based SSTs] affect the modeled phase change of summer monsoon and the associated precipitation change, while model resolution (~25 vs 400 km) mainly impacts precipitation change. © 2019 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117229
Appears in Collections: 气候变化与战略
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Recommended Citation:
Yan Q.,Wei T.,Zhang Z.. Reexamination of the Late Pliocene climate over China using a 25-km resolution general circulation model[J]. Journal of Climate,2019-01-01,32(3)