Program of the Antarctic Syowa MST/IS radar (PANSY)

Sato, K.; Tsutsumi, Masaki; Sato, Toru; Nakamura, Takuji; Saito, Akinori; Tomikawa, Yoshihiro; Nishimura, Koji; Kohma, Masashi; Yamagishi, Hisakazu; Yamanouchi, Takashi

doi:10.1016/j.jastp.2013.08.022

Cited by 67 publications

(91 citation statements)

References 57 publications

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“…1b to better understand their height distributions. Summer echoes in December, January, and February are mostly confined to altitudes of 80−90 km and are rarely seen outside this region, which is a well-known feature of PMSEs (e.g., Sato et al 2014Sato et al , 2017. Non-summer echoes between mid-March and mid-November are seen mostly at altitudes of 55−80 km, which is in line with the reported features of PMWEs over Syowa (Nishiyama et al 2015).…”

Section: Resultssupporting

confidence: 86%

“…PANSY echoes reproduced reported results by Sato et al (2014Sato et al ( , 2017 and Nishiyama et al (2015): summer echoes (PMSEs) were mostly confined to the height region of 80−90 km, and winter echoes (PMWEs) were mostly below 80 km during the daytime and for a few extended hours after sunset. This somewhat asymmetric structure about the local noon in winter was also depicted in the MAARSY observations in the Arctic (Latteck and Strelnikova 2015) although not explicitly mentioned.…”

Section: Discussionsupporting

confidence: 83%

“…The PANSY radar is a large-aperture MST radar (Sato et al 2014). The radar began continuous MST observations in early 2012 using a partial system (12 groups out of 55) based on a Doppler beam swinging technique.…”

Section: Experimental Setup and Observationsmentioning

confidence: 99%

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Characteristics of Mesosphere Echoes over Antarctica Obtained Using PANSY and MF Radars

Tsutsumi

Sato

et al. 2017

SOLA

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We investigated characteristics of mesosphere echoes over Syowa Station (69S) in the Antarctic, which were detected by the Program of the Antarctic Syowa Mesosphere, Stratosphere and Troposphere/Incoherent Scatter (PANSY) radar (47 MHz) and Medium Frequency (MF) radar (2.4 MHz). Winter echoes from the PANSY radar and low altitude MF echoes below approximately 70−75 km mostly coexisted, appearing during the daytime as well as for a few hours post sunset. Summer echoes in the lower height region were absent in both radar observations, suggesting a close relationship in the generation mechanisms of these two radar echoes. High correlation between local K-index and the occurrence of winter echoes suggested that electron density enhancement due to ionized particle precipitation was one of the triggers of echo generation. Angles of arrival of the MF echoes were more isotropic in winter. Because gravity wave activity is much higher in winter over Syowa, higher turbulence energy caused by gravity wave breaking may also be responsible for the generation of the winter echoes and their isotropic behavior. The horizontal wind velocities of the two systems were further compared and agreed well throughout the height region of 60−90 km.

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Section: Resultssupporting

confidence: 86%

Section: Discussionsupporting

confidence: 83%

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Characteristics of Mesosphere Echoes over Antarctica Obtained Using PANSY and MF Radars

Tsutsumi

Sato

et al. 2017

SOLA

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“…3 показано отношение σ ср /σ мин в тропо-сфере и стратосфере для трех рабочих частот: 50 МГц (стандартная частота МСТ-радаров), 158 МГц (ча-стота радара НР-МСТ) и 233 МГц (частота радара EISCAT VHF). Последняя частота выбрана в связи с тем, что на радаре EISCAT VHF, который обладает сравнительно низкой для НР-радаров рабочей часто-той (233 МГц), также проводились МСТ-наблюдения [Strelnikova, Rapp, 2010]. Поскольку для режима работы в нижней атмосфере нет особых требова-ний к мощности излучения, на рис.…”

Section: методика оценки потенциалаunclassified

“…За по-следние пять лет введены в строй такие инструменты, как МСТ-радар MAASRY в Норвегии [Latteck et al, 2012] и МСТ/НР-радар PANSY в Антарктиде [Sato et al, 2014]. Планируется создание многофункцио-нального радара EISCAT-3D .…”

Section: Introductionunclassified

Prospective IS-MST radar. Potential and diagnostic capabilities

Potekhin¹,

Сетов²,

Setov

et al. 2016

Solnechno-Zemnaya Fizika

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Аннотация. В ближайшие годы в районе Иркут-ска планируется строительство радара, сочетающего в себе возможности радаров некогерентного рассея-ния (НР) и мезосферно-стратосферно-тропосферных радаров (МСТ) [Жеребцов и др., 2011]. Радар НР-МСТ представляет собой фазированную решетку, состоя-щую из двух разнесенных антенных полотен, с циф-ровой многоканальной приемной системой, позво-ляющей проводить детальную пространственно-временную обработку сигнала обратного рассеяния. Показаны характеристики, конфигурация и воз-можности антенной и приемопередающей систем радара. Оценивается потенциал радара в основ-ных режимах работы, включающих исследование ионосферы методом НР на высотах более ~100 км и изучение атмосферы с помощью сигналов, рассе-янных на флуктуациях показателя преломления, вызванных атмосферными турбулентными неод-нородностями, на высотах до 100 км.Моделирование показало, что радар позволит проводить регулярные измерения параметров нейтральной атмосферы на высотах до 26 км, а также наблюдать мезосферное летнее эхо на высотах ~85 км в присутствии заряженных ледяных частиц (при увеличении числа Шмидта) и мезосферное зимнее эхо на высотах ~65 км при повышении фоновой электронной концентрации. Оценка возможностей радара при работе в режиме НР в высотных диапазо-нах 100-600 и 600-2000 км показала, что в дневных условиях при накоплении 10 мин верхняя граница определения электронной концентрации и температу-ры ионосферной плазмы составляет ~1500 и ~1300 км соответственно при стандартном отклонении не более 10 %. Верхний предел определения скорости дрейфа составляет ~1100 км при стандартном отклонении 45 м/с. Оценка интерферометрических возможностей Abstract. In the next few years, a new radar is planned to be built near Irkutsk. It should have capabilities of incoherent scatter (IS) radars and mesospherestratosphere-troposphere (MST) radars [Zherebtsov et al., 2011]. The IS-MST radar is a phased array of two separated antenna panels with a multichannel digital receiving system, which allows detailed space-time processing of backscattered signal. This paper describes characteristics, configuration, and capabilities of the antenna and transceiver systems of this radar. We estimate its potential in basic operating modes to study the ionosphere by the IS method at heights above 100 km and the atmosphere with the use of signals scattered from refractive index fluctuations, caused by turbulent mixing at heights below 100 km.The modeling shows that the radar will allow us to regularly measure neutral atmosphere parameters at heights up to 26 km as well as to observe mesosphere summer echoes at heights near 85 km in the presence of charged ice particles (an increase in Schmidt number) and mesosphere winter echoes at heights near 65 km with increasing background electron density. Evaluation of radar resources at the IS mode in two height ranges 100-600 and 600-2000 km demonstrates that in the daytime and with the accumulation time of 10 min, the upper boundaries of electron density and ionospheric plasma temperature are ~...

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Variations of nitric oxide in the mesosphere and lower thermosphere over Antarctica associated with a magnetic storm in April 2012

Isono

Mizuno

Nagahama

et al. 2014

Geophys. Res. Lett.

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We report extreme enhancements of the nitric oxide (NO) column density observed with the ground-based millimeter-wave spectroscopic radiometer installed at Syowa Station, Antarctica, during a large geomagnetic storm in April 2012. From the NO spectrum line shape and NO column density relationship with solar radiation, we concluded that the NO was emitted in the altitude range between 75 km and 100 km. The column density of NO gradually increased during the recovery phase. In addition to variations on a time frame of several days, we found diurnal variations. The increase of NO was related to precipitated electrons in the energy range of 30-300 keV observed by Polar-orbiting Operational Environmental Satellite (POES)/The Meteorological Operational (METOP). We found a rapid response (within 1 h) and a one-to-one correspondence between them. For the first time, we show that a remarkable increase of the column density of NO is caused by dawn-dusk asymmetry of the plasma sheet electrons.

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Program of the Antarctic Syowa MST/IS radar (PANSY)

Cited by 67 publications

References 57 publications

Characteristics of Mesosphere Echoes over Antarctica Obtained Using PANSY and MF Radars

Characteristics of Mesosphere Echoes over Antarctica Obtained Using PANSY and MF Radars

Prospective IS-MST radar. Potential and diagnostic capabilities

Variations of nitric oxide in the mesosphere and lower thermosphere over Antarctica associated with a magnetic storm in April 2012

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