Seasonal variations of mesoscale perturbations of OH and O2 rotational temperature in Rikubetsu, Shigaraki and Sata

IF 3.2 3区地球科学 Q2 ASTRONOMY & ASTROPHYSICS

Advances in Space Research Pub Date : 2026-07-01 Epub Date: 2025-06-13 DOI:10.1016/j.asr.2025.06.023

N.M. Gavrilov, A.V. Koval, A.A. Popov, K. Shiokawa

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引用次数: 0

Abstract

The method of digital difference filters has been applied to the analysis of OH and O₂ rotational temperature obtained with airglow temperature photometers installed at Rikubetsu (43.5°N, 143.8°E), Shigaraki (34.8°N, 136.1°E), and Sata (31.0°N, 130.7°E) in Japan. These nightglow observations cover the time interval of 2010–2018 at altitudes between 85 and 90 km. Seasonal variations in the monthly standard deviation of rotational temperature perturbations with periods of 0.7–8 h, which may be partly associated with internal gravity waves (IGWs) in the mesopause region, have been studied. Near the mesopause, seasonal variations in the relative standard deviation of the rotational temperature have maxima, the strength and timing of which depend on the location of the observing site and on the type of nighttime emission. These differences can be caused by differences in the activity of wave sources and conditions of wave propagation, differences in heights of different emission layers and seasonal changes in the complex system of photochemical processes for OH and O₂ nightglows.

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陆别、志垣和Sata地区OH和O2旋转温度中尺度扰动的季节变化

采用数字差分滤光器的方法，对安装在日本六别（43.5°N, 143.8°E）、新崎（34.8°N, 136.1°E）和Sata（31.0°N, 130.7°E）的气光温度光度计所获得的OH和O2旋转温度进行了分析。这些夜光观测覆盖了2010年至2018年的时间间隔，高度在85至90公里之间。研究了周期为0.7 ~ 8 h的旋转温度扰动的月标准差的季节变化，其可能部分与中流层顶区域的内部重力波有关。在中流层顶附近，旋转温度相对标准偏差的季节变化最大，其强度和时间取决于观测点的位置和夜间发射的类型。这些差异可能是由于波源活度和波传播条件的差异、不同发射层高度的差异以及OH和O2夜光复杂光化学过程系统的季节变化造成的。

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.