Modified Parameterization Scheme of Orographic Gravity Waves in the SOCOL Chemistry-Climate Model

IF 1.9 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

pure and applied geophysics Pub Date : 2024-12-12 DOI:10.1007/s00024-024-03619-5

A. V. Koval, N. M. Gavrilov, V. A. Zubov, E. V. Rozanov, A. G. Golovko

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引用次数: 0

Abstract

This paper describes the results of modifying the parametrization of subgrid stationary orographic gravity waves (OGWs) in the chemistry-climate model SOCOL, version 3. The originally used OGW parameterization is modified using polarization relations for stationary waves in the rotating atmosphere. Parameterizing the OGW generation by the Earth’s topography at subgrid scales follows the widely used Lott and Miller scheme, but the expressions for calculating the vertical profiles of OGW amplitudes, wave drag and heat influx, are modified. Test simulations of the general atmospheric circulation for 10 years (from 2009 to 2018) have been launched with the SOCOL model involving the modified OGW parameterization. Using the realistic profiles of the background wind and temperature, characteristics of OGWs propagating in the atmosphere from the Earth’s surface to the heights of about 80 km are simulated for different locations in the Northern and Southern Hemispheres. Comparisons with the MERRA2 reanalysis data show that the modified OGW parameterization provides better agreement of simulated and observed multiyear-mean zonal wind and temperature in the mesosphere and lower thermosphere region. The modified parameterization can be used in other atmospheric circulation models.

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SOCOL化学-气候模式中地形重力波参数化的改进方案

本文描述了对SOCOL化学-气候模式第3版中亚网格静止地形重力波（OGWs）参数化的修正结果。利用旋转大气中驻波的极化关系对原有的OGW参数化方法进行了改进。在亚网格尺度上，地球地形参数化OGW的产生遵循了广泛使用的Lott和Miller格式，但对OGW振幅、波阻和热侵量的垂直剖面计算公式进行了修改。采用改进OGW参数化的SOCOL模式对2009 - 2018年10年的大气环流进行了试验模拟。利用真实的背景风和温度剖面图，模拟了在北半球和南半球不同地点从地球表面传播到约80公里高度的ogw在大气中的特征。与MERRA2再分析资料的比较表明，修正后的OGW参数化能更好地模拟和观测多年平均纬向风和中下层热层区温度。改进后的参数化方法可用于其他大气环流模式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

pure and applied geophysics 地学-地球化学与地球物理

CiteScore

4.20

自引率

5.00%

发文量

240

审稿时长

9.8 months

期刊介绍： pure and applied geophysics (pageoph), a continuation of the journal "Geofisica pura e applicata", publishes original scientific contributions in the fields of solid Earth, atmospheric and oceanic sciences. Regular and special issues feature thought-provoking reports on active areas of current research and state-of-the-art surveys. Long running journal, founded in 1939 as Geofisica pura e applicata Publishes peer-reviewed original scientific contributions and state-of-the-art surveys in solid earth and atmospheric sciences Features thought-provoking reports on active areas of current research and is a major source for publications on tsunami research Coverage extends to research topics in oceanic sciences See Instructions for Authors on the right hand side.