Systematic model forecast error in Rossby wave structure
Systematic model forecast error in Rossby wave structure
复制标题
罗斯贝波结构的系统模型预报误差
DOI:
10.1002/2014gl059282
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发表时间:
2014
影响因子:
5.2
通讯作者:
Gray S
中科院分区:
文献类型:
--
作者:
Gray S
Diabatic processes can alter Rossby wave structure; consequently, errors arising from model processes propagate downstream. However, the chaotic spread of forecasts from initial condition uncertainty renders it difficult to trace back from root‐mean‐square forecast errors to model errors. Here diagnostics unaffected by phase errors are used, enabling investigation of systematic errors in Rossby waves in winter season forecasts from three operational centers. Tropopause sharpness adjacent to ridges decreases with forecast lead time. It depends strongly on model resolution, even though models are examined on a common grid. Rossby wave amplitude reduces with lead 5 days, consistent with underrepresentation of diabatic modification and transport of air from the lower troposphere into upper tropospheric ridges, and with too weak humidity gradients across the tropopause. However, amplitude also decreases when resolution is decreased. Further work is necessary to isolate the contribution from errors in the representation of diabatic processes.
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影响因子:
8.9
作者:
J. Chagnon;S. Gray;J. Methven
通讯作者:
J. Chagnon;S. Gray;J. Methven
影响因子:
8.9
作者:
O. Martínez‐Alvarado;H. Joos;J. Chagnon;Maxi Boettcher;S. Gray;R. Plant;J. Methven;H. Wernli
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5.2
作者:
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通讯作者:
Corti, S.
DOI:
--
发表时间:
2005
期刊:
影响因子:
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作者:
T. Jung;A. Tompkins;M. Rodwell
通讯作者:
M. Rodwell
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
T. Frame;M. Ambaum;S. Gray;J. Methven
通讯作者:
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