Solnechno-Zemnaya Fizika Solnechno-Zemnaya Fizika Солнечно-земная физика 2712-9640 13891 10.12737/22598 Результаты исследований Results of current research Результаты исследований Comparing temperature of subauroral mesopause over Yakutia with SABER radiometer data for 2002–2014 Сравнение температуры субавроральной мезопаузы над Якутией с данными радиометра SABER с 2002 по 2014 г Аммосова Анастасия Михайловна Ammosova Anastasiya Mihaylovna ammosovaam@mail.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Гаврильева Галина Алексеевна Gavrilieva Galina Alekseevna gagavrilyeva@ikfia.ysn.ru Аммосов Петр Петрович Ammosov Petr Petrovich

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Колтовской Игорь Иннокентьевич Koltovskoi Igor Innokentyevich Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy of SB RAS Yakutsk Russian Federation Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS Yakutsk Russian Federation Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS Yakutsk Russian Federation Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН Якутск Россия Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS Yakutsk Russian Federation 15 11 2016 15 11 2016 3 2 58 63 https://zh-szf.ru/en/nauka/article/13891/view

Представлена температурная база данных для области мезопаузы, полученная по спектральным измерениям полос (0-1) Атмосферной системы О2(0-1) и ОН(6-2) с помощью спектрографа СП-50 на станции Маймага (63° N, 129.5° E) в течение 2002–2014 гг. Временной ряд температуры включает в себя 11-летний солнечный цикл. Проведено ее сравнение с температурой, полученной радиометром SABER (версии данных v.1.07 и v.2.0), расположенным на спутнике TIMED. Сравнивались температуры, измеренные при пролетах спутника не далее 500 км от точки пересечения линии визирования спектрографа с излучающими слоями гидроксила (~87 км) и кислорода (~95 км). Временной критерий составляет 30 минут. Установлено, что наблюдается сезонная зависимость разности между данными измерений наземным прибором и со спутника. Данные, полученные при помощи SABER v2.0 показали хорошее согласие с температурами, измеренными инфракрасным цифровым спектрографом. На основании проведенного анализа сделан вывод, что ряды вращательных температур, полученных на станции Маймага, могут быть использованы для исследования колебаний температуры различных временных масштабов, в том числе и долговременных трендов на высоте мезопаузы.

We present the temperature database for the mesopause region, which was collected from spectral measurements of bands O2(0-1) and OH(6-2) with the infrared spectrograph SP-50 at the Maimaga station (63° N; 129.5° E) in 2002–2014. The temperature time series covers 11-year solar cycle. It is compared with the temperature obtained with the Sounding of the At-mosphere using Broadband Emission Radiometry in-strument (SABER, v.1.07 and v.2.0), installed onboard the TIMED satellite. We compare temperatures meas-ured during satellite passes at distances under 500 km from the intersection of the spectrograph sighting line with the hydroxyl emitting layer (~87 km) and oxygen emitting layer (~95 km). The time criterion is 30 min. We observe that there is a seasonal dependence of the difference between the ground-based and satellite measurements. The data obtained using SABER v2.0 show good agreement with the temperatures measured with the infrared digital spectrograph. The analysis we carried out allows us to conclude that a series of rotational temperatures obtained at the Maimaga station can be used to study temperature variations on different time scales including long-term trends at the mesopause height

 излучение OH и O2 температура мезопаузы SABER/TIMED OH and O2 airglow mesopause temperature SABER/TIMED

INTRODUCTIONAt present, the comparison between ground and satellite measurements is of topical interest. It is necessary to evaluate possible differences between them for a long period. We compare OH(6-2) and O2(0-1) rotational temperatures measured during 2002–2014 (the Maimaga high-latitude station (63° N; 129.5° E) infrared spectrograph) with mesopause kinetic temperatures at ~87 and ~95 km heights measured with the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument onboard NASA’s TIMED (Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics) spacecraft [Mertens et al., 2001]. Many studies on the comparison between SABER temperatures and those measured with ground-based techniques and instruments have been published in recent years [Remsberg et al., 2008; Smith et al., 2010; French, Mulligan, 2010; Gavrilyeva et al., 2011]. They give an estimate of the offset or bias between data from SABER and ground-based instruments. All of these studies involve relatively short data runs [French and Mulligan, 2010]. We use ground-based data on OH(6-2) and O2(0-1) rotational temperatures for 2002–2014, which allow us to examine biases between SABER and Maimaga data obtained over this period.

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