Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 94153 10.2205/2025es001027 ugigpg ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ A New Version of Parametrization of Orographic Waves: Dynamic and Thermal Effects in the SOCOL3 Model A New Version of Parametrization of Orographic Waves: Dynamic and Thermal Effects in the SOCOL3 Model https://orcid.org/0000-0001-6446-1808 Коваль Андрей Владиславович Koval' Andrey Vladislavovich a.v.koval@spbu.ru https://orcid.org/0000-0002-3944-9433 Гаврилов Николай Михайлович Gavrilov Nikolay Mihaylovich gannik@gmail.com

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Зубов Владимир Аркадьевич Zubov Vladimir Arkad'evich https://orcid.org/0000-0003-0479-4488 Розанов Евгений Владимирович Rozanov Eugene Vladimirovich

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 https://orcid.org/0009-0006-7674-207X Фадеев Алексей Сергеевич Fadeev Aleksey Sergeevich Санкт-Петербургский государственный университет St. Petersburg State University Российский государственный гидрометеорологический университет Россия Russian State Hydrometeorological University Russian Federation Санкт-Петербургский государственный университет Санкт-Петербург Россия Saint-Petersburg State University Saint Petersburg Russian Federation Санкт-Петербургский государственный университет Россия Saint Petersburg State University Russian Federation Главная геофизическая обсерватория имени А.И. Воейкова Россия Voeikov Main Geophysical Observatory Russian Federation Санкт-Петербургский государственный университет Россия Saint Petersburg State University Russian Federation Davos Physics and Meteorological Observatory/World Radiation Center (PMOD/WRC) Россия Davos Physics and Meteorological Observatory/World Radiation Center (PMOD/WRC) Russian Federation Санкт-Петербургский государственный университет Россия Saint Petersburg State University Russian Federation 17 10 2025 17 10 2025 25 5 ES5014 27 01 2025 10 06 2025 https://rjes.ru/en/nauka/article/94153/view

Orographic gravity waves (OGW) have a significant impact on the global atmospheric circulation, providing the transfer of energy and momentum within the atmospheric layers from the surface to the lower thermosphere. Most modern numerical models of the global climate, due to the specifics of the problems being solved, are not able to resolve the atmospheric wave of the meso- and lower scale on their spatial grid. Therefore, various parameterization schemes for wave effects are developed to take into account the impact of OGW. This study is devoted to a detailed description of the new version of the OGW parameterization created on the basis of solving the wave energy balance equation taking into account the Earth rotation. The new version of the parameterization was implemented into the chemistry-climate model SOCOL3 and numerical experiments were carried out using both the previous and the new versions of the parameterization. It is shown, in particular, that the new version of the OGW parameterization allows for more detailed calculation of wave accelerations and heat inflows, especially in the lower stratosphere, while the OGWs propagate to greater heights of the thermosphere than in the previous parameterization, which better corresponds to observations. As a result, this allows us to obtain more realistic profiles of the mean wind and temperature calculated by the model SOCOL3 with the new parameterization, and the possibilities for fine-tuning the new parameterization provide a significant expansion of a range of scenarios for numerical experiments.

Orographic gravity waves (OGW) have a significant impact on the global atmospheric circulation, providing the transfer of energy and momentum within the atmospheric layers from the surface to the lower thermosphere. Most modern numerical models of the global climate, due to the specifics of the problems being solved, are not able to resolve the atmospheric wave of the meso- and lower scale on their spatial grid. Therefore, various parameterization schemes for wave effects are developed to take into account the impact of OGW. This study is devoted to a detailed description of the new version of the OGW parameterization created on the basis of solving the wave energy balance equation taking into account the Earth rotation. The new version of the parameterization was implemented into the chemistry-climate model SOCOL3 and numerical experiments were carried out using both the previous and the new versions of the parameterization. It is shown, in particular, that the new version of the OGW parameterization allows for more detailed calculation of wave accelerations and heat inflows, especially in the lower stratosphere, while the OGWs propagate to greater heights of the thermosphere than in the previous parameterization, which better corresponds to observations. As a result, this allows us to obtain more realistic profiles of the mean wind and temperature calculated by the model SOCOL3 with the new parameterization, and the possibilities for fine-tuning the new parameterization provide a significant expansion of a range of scenarios for numerical experiments.

 Orographic gravity waves mesoscale atmospheric waves subgrid scale orography wave drag wave heating rates atmospheric circulation Orographic gravity waves mesoscale atmospheric waves subgrid scale orography wave drag wave heating rates atmospheric circulation Numerical modeling was performed on the computing cluster of the Laboratory for Ozone Layer and Upper Atmosphere Research with support from St. Petersburg State University (Project ID 124032000025-1). Analysis of global wave interactions, RMC calculations, heat fluxes, and EP fluxes were supported by the Russian Science Foundation grant No. 25-47-00122. Numerical modeling was performed on the computing cluster of the Laboratory for Ozone Layer and Upper Atmosphere Research with support from St. Petersburg State University (Project ID 124032000025-1). Analysis of global wave interactions, RMC calculations, heat fluxes, and EP fluxes were supported by the Russian Science Foundation grant No. 25-47-00122.

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