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    Simulations of Present and Future Climates in the Western United States with Four Nested Regional Climate Models

    Source: Journal of Climate:;2006:;volume( 019 ):;issue: 006::page 873
    Author:
    Duffy, P. B.
    ,
    Arritt, R. W.
    ,
    Coquard, J.
    ,
    Gutowski, W.
    ,
    Han, J.
    ,
    Iorio, J.
    ,
    Kim, J.
    ,
    Leung, L.-R.
    ,
    Roads, J.
    ,
    Zeledon, E.
    DOI: 10.1175/JCLI3669.1
    Publisher: American Meteorological Society
    Abstract: In this paper, the authors analyze simulations of present and future climates in the western United States performed with four regional climate models (RCMs) nested within two global ocean?atmosphere climate models. The primary goal here is to assess the range of regional climate responses to increased greenhouse gases in available RCM simulations. The four RCMs used different geographical domains, different increased greenhouse gas scenarios for future-climate simulations, and (in some cases) different lateral boundary conditions. For simulations of the present climate, RCM results are compared to observations and to results of the GCM that provided lateral boundary conditions to the RCM. For future-climate (increased greenhouse gas) simulations, RCM results are compared to each other and to results of the driving GCMs. When results are spatially averaged over the western United States, it is found that the results of each RCM closely follow those of the driving GCM in the same region in both present and future climates. This is true even though the study area is in some cases a small fraction of the RCM domain. Precipitation responses predicted by the RCMs in many regions are not statistically significant compared to interannual variability. Where the predicted precipitation responses are statistically significant, they are positive. The models agree that near-surface temperatures will increase, but do not agree on the spatial pattern of this increase. The four RCMs produce very different estimates of water content of snow in the present climate, and of the change in this water content in response to increased greenhouse gases.
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      Simulations of Present and Future Climates in the Western United States with Four Nested Regional Climate Models

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4220776
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    contributor authorDuffy, P. B.
    contributor authorArritt, R. W.
    contributor authorCoquard, J.
    contributor authorGutowski, W.
    contributor authorHan, J.
    contributor authorIorio, J.
    contributor authorKim, J.
    contributor authorLeung, L.-R.
    contributor authorRoads, J.
    contributor authorZeledon, E.
    date accessioned2017-06-09T17:01:33Z
    date available2017-06-09T17:01:33Z
    date copyright2006/03/01
    date issued2006
    identifier issn0894-8755
    identifier otherams-78140.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4220776
    description abstractIn this paper, the authors analyze simulations of present and future climates in the western United States performed with four regional climate models (RCMs) nested within two global ocean?atmosphere climate models. The primary goal here is to assess the range of regional climate responses to increased greenhouse gases in available RCM simulations. The four RCMs used different geographical domains, different increased greenhouse gas scenarios for future-climate simulations, and (in some cases) different lateral boundary conditions. For simulations of the present climate, RCM results are compared to observations and to results of the GCM that provided lateral boundary conditions to the RCM. For future-climate (increased greenhouse gas) simulations, RCM results are compared to each other and to results of the driving GCMs. When results are spatially averaged over the western United States, it is found that the results of each RCM closely follow those of the driving GCM in the same region in both present and future climates. This is true even though the study area is in some cases a small fraction of the RCM domain. Precipitation responses predicted by the RCMs in many regions are not statistically significant compared to interannual variability. Where the predicted precipitation responses are statistically significant, they are positive. The models agree that near-surface temperatures will increase, but do not agree on the spatial pattern of this increase. The four RCMs produce very different estimates of water content of snow in the present climate, and of the change in this water content in response to increased greenhouse gases.
    publisherAmerican Meteorological Society
    titleSimulations of Present and Future Climates in the Western United States with Four Nested Regional Climate Models
    typeJournal Paper
    journal volume19
    journal issue6
    journal titleJournal of Climate
    identifier doi10.1175/JCLI3669.1
    journal fristpage873
    journal lastpage895
    treeJournal of Climate:;2006:;volume( 019 ):;issue: 006
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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