DOI: 10.1175/JCLI-D-12-00169.1
Scopus记录号: 2-s2.0-84876933022
论文题名: A new HADGEM3-a-based system for attribution of weather- and climate-related extreme events
作者: Christidis N. ; Stott P.A. ; Scaife A.A. ; Arribas A. ; Jones G.S. ; Copsey D. ; Knight J.R. ; Tennant W.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 9 起始页码: 2756
结束页码: 2783
语种: 英语
Scopus关键词: Atmospheric components
; Climate extremes
; Climatic variables
; Human influences
; Observational data
; Reliable results
; Sea surface temperature (SST)
; System evaluation
; Atmospheric temperature
; Climatology
; Sea ice
; Estimation
; anthropogenic effect
; atmospheric modeling
; climate forcing
; climate prediction
; ensemble forecasting
; extreme event
; Hadley cell
; precipitation (climatology)
; sea ice
; sea surface temperature
; Moscow [Russian Federation]
; Pakistan
; Russian Federation
; United Kingdom
英文摘要: A new system for attribution of weather and climate extreme events has been developed based on the atmospheric component of the latest Hadley Centre model. The model is run with either observational data of sea surface temperature and sea ice or estimates of what their values would be without the effect of anthropogenic climatic forcings. In that way, ensembles of simulations are produced that represent the climate with and without the effect of human influences. A comparison between the ensembles provides estimates of the change in the frequency of extremes due to anthropogenic forcings. To evaluate the new system, reliability diagrams are constructed, which compare the model-derived probability of extreme events with their observed frequency. The ability of the model to reproduce realistic distributions of relevant climatic variables is another key aspect of the system evaluation. Results are then presented from analyses of three recent highimpact events: the 2009/10 cold winter in the United Kingdom, the heat wave in Moscow in July 2010, and floods in Pakistan in July 2010. An evaluation assessment indicates the model can provide reliable results for the U.K. and Moscow events but not for Pakistan. It is found that without anthropogenic forcings winters in the United Kingdom colder than 2009/10 would be 7-10 times (best estimate) more common. Although anthropogenic forcings increase the likelihood of heat waves in Moscow, the 2010 event is found to be very uncommon and associated with a return time of several hundred years. No reliable attribution assessment can be made for high-precipitation events in Pakistan. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51907
Appears in Collections: 气候变化事实与影响
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作者单位: Met Office Hadley Centre, Exeter, United Kingdom
Recommended Citation:
Christidis N.,Stott P.A.,Scaife A.A.,et al. A new HADGEM3-a-based system for attribution of weather- and climate-related extreme events[J]. Journal of Climate,2013-01-01,26(9)