Sensitivity of dynamics and ozone to different representations of SSTs in the Unified Model
Sensitivity of dynamics and ozone to different representations of SSTs in the Unified Model
复制标题
统一模型中动力学和臭氧对海表温度不同表示的敏感性
DOI：
10.1256/qj.03.183
复制
发表时间：
2004
影响因子：
8.9
通讯作者：
J. Pyle
中科院分区：
文献类型：
--
作者：
P. Braesicke;J. Pyle
我们使用英国气象局统一模型的一个版本，使用简单的平流层化学来执行一组20年的多年积分。这些运行在辐射中有不同的臭氧表示，并使用规定的海面温度（SSTs）。在一个实验中，每个模型年都使用相同的长期平均月平均海温，而所有其他实验都使用年度变化的AMIP II月平均海温。所有运行都包含相同的简化臭氧化学（无论在辐射中使用哪种臭氧），因此我们可以估计动态变化对臭氧的影响。我们对比了模式系统对臭氧表征的敏感性和与海温年际变率去除相关的变化。我们表明，用统一模式模拟的北半球冬季平流层极端事件的出现更多地与海温的表现有关，而不是与臭氧有关。版权所有©2004英国皇家气象学会
We use a version of the Met Office Unified Model with a simple stratospheric chemistry to perform a set of multi‐annual integrations of 20 years each. The runs have different representations of ozone in the radiation and use prescribed sea surface temperatures (SSTs). In one experiment the same long‐term mean monthly mean SSTs are used each model year, whereas all other experiments use annual varying AMIP II monthly mean SSTs instead. All runs have the same simplified ozone chemistry included (regardless of which ozone is used in the radiation), so we can estimate the impact of dynamical changes on ozone. We contrast the sensitivity of the model system towards the representation of ozone with the changes associated with the removal of the interannual variability in SSTs. We show that the appearance of extreme events in the northern hemisphere winter stratosphere as modelled with the Unified Model is linked more to the representation of SSTs than it is to ozone. Copyright © 2004 Royal Meteorological Society