Sources of uncertainty in the extreme value statistics of climate data

Sources of uncertainty in the extreme value statistics of climate data
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气候数据极值统计的不确定性来源

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发表时间:
2010
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通讯作者:
M. Wehner
M. Wehner
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作者:
M. Wehner

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我们调查了三个来源的不确定性在极端值统计的观测和模拟气候数据的计算。模型间在配方、非强制性内部变异性和统计模型的选择方面的差异都导致了不确定性。使用拟合GEV分布,以获得20年的回报值,我们量化这些不确定性的年最高日平均地表空气温度的工业化前控制运行从CMIP 3数据集中的15个气候模型。
We investigate three sources of uncertainty in the calculation of extreme value statistics for observed and modeled climate data. Inter-model differences in formulation, unforced internal variability and choice of statistical model all contribute to uncertainty. Using fits to the GEV distribution to obtain 20 year return values, we quantify these uncertainties for the annual maximum daily mean surface air temperatures of pre-industrial control runs from 15 climate models in the CMIP3 dataset.