从对流层到热层的平均风和潮汐变率，由地面和空间联合测量反演

IF 1.8 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Journal of Atmospheric and Solar-Terrestrial Physics Pub Date : 2024-12-01 DOI:10.1016/j.jastp.2024.106389

A. Kalyan Teja , M. Venkat Ratnam , S. Vijaya Bhaskara Rao

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引用次数: 0

摘要

利用ERA5再分析数据、svu -流星雷达数据和ICON/MIGHTI数据集进行综合验证，试图获得热带地区Tirupati（13.5°N, 79.2°E）上空覆盖整个中高层大气的平均风。无论季节如何，热层风（200-300公里）和中间层风（80-100公里）表现出显著的日变化。平均风在平流层顶和中间层表现出两个不同的半年振荡。在MLT区，经向风的潮汐幅值大于纬向风。该研究在大气环流数值模拟领域，特别是对数值模拟的验证具有一定的应用潜力。

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Mean winds and tidal variability from troposphere to the thermosphere retrieved from combined ground based and space borne measurements

An attempt has been made to obtain mean winds covering the complete middle and upper atmosphere over a tropical region, Tirupati(13.5°N, 79.2°E) using a combined dataset of ERA5 reanalysis, SVU-meteor radar, and ICON/MIGHTI after comprehensive validation. Regardless of the season, thermospheric(200–300 km) and mesospheric(80–100 km) winds exhibit significant diurnal variability. Mean winds exhibit two distinct semi-annual oscillations at the stratopause and in the mesosphere. Tidal amplitudes are larger in meridional winds compared to that of zonal winds in the MLT region. This work has the potential in the field of numerical modeling of atmospheric circulation, especially to verify numerical simulations.

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来源期刊

Journal of Atmospheric and Solar-Terrestrial Physics 地学-地球化学与地球物理

CiteScore

4.10

自引率

5.30%

发文量

审稿时长

6 months

期刊介绍： The Journal of Atmospheric and Solar-Terrestrial Physics (JASTP) is an international journal concerned with the inter-disciplinary science of the Earth''s atmospheric and space environment, especially the highly varied and highly variable physical phenomena that occur in this natural laboratory and the processes that couple them. The journal covers the physical processes operating in the troposphere, stratosphere, mesosphere, thermosphere, ionosphere, magnetosphere, the Sun, interplanetary medium, and heliosphere. Phenomena occurring in other "spheres", solar influences on climate, and supporting laboratory measurements are also considered. The journal deals especially with the coupling between the different regions. Solar flares, coronal mass ejections, and other energetic events on the Sun create interesting and important perturbations in the near-Earth space environment. The physics of such "space weather" is central to the Journal of Atmospheric and Solar-Terrestrial Physics and the journal welcomes papers that lead in the direction of a predictive understanding of the coupled system. Regarding the upper atmosphere, the subjects of aeronomy, geomagnetism and geoelectricity, auroral phenomena, radio wave propagation, and plasma instabilities, are examples within the broad field of solar-terrestrial physics which emphasise the energy exchange between the solar wind, the magnetospheric and ionospheric plasmas, and the neutral gas. In the lower atmosphere, topics covered range from mesoscale to global scale dynamics, to atmospheric electricity, lightning and its effects, and to anthropogenic changes.