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Bias corrections of global models for regional climate simulations of high-impact weather

机译:高影响天气区域气候模拟全球模型的偏差校正

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摘要

All global circulation models (GCMs) suffer from some form of bias, which when used as boundary conditions for regional climate models may impact the simulations, perhaps severely. Here we present a bias correction method that corrects the mean error in the GCM, but retains the six-hourly weather, longer-period climate-variability and climate change from the GCM. We utilize six different bias correction experiments; each correcting different bias components. The impact of the full bias correction and the individual components are examined in relation to tropical cyclones, precipitation and temperature. We show that correcting of all boundary data provides the greatest improvement.
机译:所有全球环流模型(GCM)都有某种形式的偏差,当用作区域气候模型的边界条件时,可能会严重影响模拟。在这里,我们提出一种偏差校正方法,该方法可以校正GCM中的平均误差,但保留GCM的六小时天气,更长周期的气候变化和气候变化。我们利用六个不同的偏差校正实验;每个都校正不同的偏差分量。与热带气旋,降水和温度相关的全偏差校正和各个组成部分的影响进行了检查。我们表明,所有边界数据的校正都可以提供最大的改进。

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  • 来源
    《Climate dynamics》 |2014年第8期|1847-1856|共10页
  • 作者单位

    Earth System Laboratory, National Center for Atmospheric Research, 3090 Center Green Drive, Boulder, CO 80301, USA,Environmental Sciences and Management, North-West University, Potchefstroom, South Africa;

    Earth System Laboratory, National Center for Atmospheric Research, 3090 Center Green Drive, Boulder, CO 80301, USA;

    Earth System Laboratory, National Center for Atmospheric Research, 3090 Center Green Drive, Boulder, CO 80301, USA;

    Earth System Laboratory, National Center for Atmospheric Research, 3090 Center Green Drive, Boulder, CO 80301, USA;

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