Effect of background wind and dissipation processes on the diurnal component of atmospheric solar tides

IF 2.8 3区地球科学 Q2 ASTRONOMY & ASTROPHYSICS

Advances in Space Research Pub Date : 2024-08-05 DOI:10.1016/j.asr.2024.07.079

Naresh Reddimalla, Geeta Vichare, J.V. Ramana Murthy

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Abstract

The radiation coming from the Sun heats the Earth’s atmosphere and generates atmospheric tides. In this paper, we model atmospheric tides in the presence of background wind and dissipation processes and investigate their effects. The equations for tidal oscillations of wind and temperature in the atmosphere encompass factors such as background wind, temperature profile, and background composition including ozone, carbon dioxide, hydro-magnetic interactions, Newtonian cooling, eddy, and molecular diffusion. These components interact to define the behavior of tidal phenomena comprehensively. Thermal forcing processes include the insolation absorption of HO in the troposphere, O in the stratosphere, and a contribution from O absorption in the thermosphere. The method of solution for the equations is outlined for the solar diurnal tides during the March equinox by considering all these dissipation processes and the background wind. The obtained results are in good agreement with the Global Scale Wave Model (GSWM-00). It is found that the background wind plays significant role in affecting the horizontal wind oscillations below 100 km. At higher altitudes (100–200 km), the background wind, ion drag force, divergence of momentum, and heat fluxes due to molecular and eddy diffusion have a considerable role in affecting the zonal and meridional winds.

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背景风和消散过程对大气太阳潮汐昼夜分量的影响

来自太阳的辐射会加热地球大气层并产生大气潮汐。在本文中，我们模拟了存在背景风和耗散过程的大气潮汐，并研究了它们的影响。大气中风和温度的潮汐振荡方程包括背景风、温度曲线和背景成分（包括臭氧、二氧化碳、水磁相互作用、牛顿冷却、涡流和分子扩散）等因素。这些因素相互作用，全面定义了潮汐现象的行为。热强迫过程包括对流层对 HO 的日照吸收、平流层对 O 的吸收以及热大气层对 O 的吸收。通过考虑所有这些耗散过程和背景风，为三月分期间的日潮概述了方程的求解方法。得到的结果与全球尺度波模型（GSWM-00）十分吻合。研究发现，背景风对 100 千米以下的水平风振荡影响很大。在较高海拔地区（100-200 公里），背景风、离子阻力、动量发散以及分子和涡流扩散产生的热通量对纵向风和经向风的影响相当大。

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

Advances in Space Research 地学天文-地球科学综合

CiteScore

5.20

自引率

11.50%

发文量

800

审稿时长

5.8 months

期刊介绍： The COSPAR publication Advances in Space Research (ASR) is an open journal covering all areas of space research including: space studies of the Earth''s surface, meteorology, climate, the Earth-Moon system, planets and small bodies of the solar system, upper atmospheres, ionospheres and magnetospheres of the Earth and planets including reference atmospheres, space plasmas in the solar system, astrophysics from space, materials sciences in space, fundamental physics in space, space debris, space weather, Earth observations of space phenomena, etc. NB: Please note that manuscripts related to life sciences as related to space are no more accepted for submission to Advances in Space Research. Such manuscripts should now be submitted to the new COSPAR Journal Life Sciences in Space Research (LSSR). All submissions are reviewed by two scientists in the field. COSPAR is an interdisciplinary scientific organization concerned with the progress of space research on an international scale. Operating under the rules of ICSU, COSPAR ignores political considerations and considers all questions solely from the scientific viewpoint.