Improved Atlantic winter blocking in a climate model

被引：186

作者：

Scaife, Adam A. ^{[1
]}

Copsey, Dan ^{[1
]}

Gordon, Chris ^{[1
]}

Harris, Chris ^{[1
]}

Hinton, Tim ^{[1
]}

Keeley, Sarah ^{[2
]}

O'Neill, Alan ^{[2
]}

Roberts, Malcolm ^{[1
]}

Williams, Keith ^{[1
]}

机构：

[1] Met Off Hadley Ctr, Exeter EX1 3PB, Devon, England

[2] Univ Reading, Dept Meteorol, NCAS Climate, Reading RG6 6BB, Berks, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2011年 / 38卷

关键词：

ATMOSPHERIC BLOCKING; NORTH; TEMPERATURE; CIRCULATION; PACIFIC; VARIABILITY; SENSITIVITY; FREQUENCY; INDEX; OCEAN;

D O I：

10.1029/2011GL049573

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Most climate models underestimate the frequency of Atlantic blocking. Horizontal resolution is often cited as the main culprit due to poorly resolved small-scale variability whose upscale effects help to maintain blocks. However, recent studies show that blocking errors are also largely attributable to the large scale climatological bias of the model. Furthermore, modest resolution models can contain enough variability to generate greatly improved blocking frequency if they are corrected to account for time-mean bias. Here we show greatly improved simulations of Atlantic winter blocking frequency in a coupled ocean-atmosphere climate model. A reduction of the mean bias, due to an improved simulation of the Atlantic Ocean, is a key element of the improvement. Citation: Scaife, A. A., D. Copsey, C. Gordon, C. Harris, T. Hinton, S. Keeley, A. O'Neill, M. Roberts, and K. Williams (2011), Improved Atlantic winter blocking in a climate model, Geophys. Res. Lett., 38, L23703, doi:10.1029/2011GL049573.

引用

页数：6

共 39 条

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