Modelling of forecast errors in geophysical fluid flows

Modelling of forecast errors in geophysical fluid flows
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地球物理流体流动预测误差建模

DOI:
10.1002/fld.1618
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发表时间:
2007
影响因子:
1.8
通讯作者:
Bannister R
Bannister R
中科院分区:
工程技术4区
文献类型:
--
作者:
Bannister R

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寻求一种方法将大气数值预报中的误差分解为不相关的分量。这可以简化预测误差概率密度函数的表示,从而可以用于数据同化。提出了一种基于位涡度(PV)的新方法,将误差划分为相互不相关的平衡和不平衡变量。将PV法的有效性与一种简单的方法进行了比较。一个玩具模型和一个操作预测模型被用来表明基于PV的变量通常比那些更简单的方法更不相关。版权所有©2007 John Wiley & Sons, Ltd
A method is sought to decompose errors in numerical forecasts of the atmosphere into components that are uncorrelated. This can simplify the representation of the probability density function of forecast errors so that it can be used in data assimilation. A new method based on potential vorticity (PV) is used to partition errors into balanced and unbalanced variables that are thought to be mutually uncorrelated. The effectiveness of the PV method is compared with a simpler method. A toy model and an operational forecasting model are used to show that the PV‐based variables are usually less correlated than those of the simpler approach. Copyright © 2007 John Wiley & Sons, Ltd.
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
M. Wlasak;Nancy Nichols;I. Roulstone
通讯作者: I. Roulstone
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
D. Katz;A. Lawless;N. Nichols;M. Cullen;R. Bannister
通讯作者: R. Bannister