Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2011, Vol. 8, No. 4, pp. 127-135
Variations in atmospheric temperature at the mesopause and lower thermosphere heights during periods of stratospheric warming according to the data of ground-based and satellite measurements
at different longitudinal sectors
I.V. Medvedeva
1, A.B. Beletsky
1, V.I. Perminov
2, A.I. Semenov
2, M.A. Chernigovskaya
1, N.N. Shefov
21 Institute of Solar-Terrestrial Physics (ISTP), Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia
2 Obukhov Institute of Atmospheric Physics (IAP), Russian Academy of Sciences, Moscow, Russia
The results of studies of variations in atmospheric temperature at the mesopause and lower thermosphere (MLT) heights in different longitudinal sectors during the sudden stratospheric warming (SSW) events in 2008-2010 are presented. The research are made on the data of ground-based and satellite measurements.
The data about the variations of the mesopause temperature (~87 km) obtained from ground-based spectrographic measurements of the hydroxyl emission (834.0 nm, band (6,2)) at the ISTP Geophysical observatory (52N, 103E) and Zvenigorod station (56N, 37E) were analyzed. Satellite data on atmospheric temperature vertical profiles obtained by the EOS Aura Microwave Limb Sounder (MLS) were involved.
Temperature variations at the mesopause height were compared with those at stratospheric height during SSWs.
It was shown that SSWs affect on the temperature regime of the atmosphere at the MLT height. However, the character of the manifestations at different longitudinal stations was not always identical. In the European longitudinal zone the mesopause temperature decreased during all analyzed SSWs. In East Asia - reaction of the mesopause temperature on SSW did not show such a stable tendency.
The nature and magnitude of the mesopause temperature decrease depends on the intensity of sratospheric warming. Practically during all analyzed SSW events, when the stratospheric temperature increased by ~ 30 K, the mesopause temperature decreased by ~ 20 K.
Keywords: temperature, stratospheric warming, mesopause, ground-based and satellite measurements
Full textReferences:
- Harada Y., Goto A., Hasegawa H., Fujikawa N., Naoe H., Hirooka T., A major stratospheric sudden warming event in January 2009, J. Atmos. Sci., 2010, available at: doi: 10.1175/2009JAS3320.1.
- Hernandes G., Winter mesospheric temperatures above South Pole (90S): Mesospheric cooling during 2002, Geophys. Res. Lett., Vol. 31, p. L07109, available at: doi: 10.1029/2004GL019414, 2004.
- Labitzke K., Kunze M., On the remarkable Arctic winter in 2008/2009, J. Geoph. Res., 2009, Vol. 114, p. D00I02, available at: doi:10.1029/2009JD012273.
- Labitzke K., Temperature changes in the mesosphere and stratosphere connected with circulation changes in winter, J. Atmos. Sci., 1972, Vol. 29, No. 4, pp. 756-766.
- Liu H.-L., Roble R.G., A study of a self-generated stratospheric sudden warming and its mesospheric-lower thermospheric impacts using the coupled TIME-GCM/CCM3, J. Geoph. Res., 2002, Vol. 107, No. D23, p. 4695, available at: doi:10.1029/2001JD001533.
- Matsuno T., A dynamical model of the Stratospheric Sudden Warming, J. Atmos. Sci., 1971, Vol. 28, pp. 1479-1494.
- Matveeva O.A., Semenov A.I., The results of hydroxyl emission observations during MAP/WINE period; stratospheric warmings (February, 1984), MAP/WINE Newsletters, 1985, No. 3, pp. 4-5.
- Myrabo H.K., Deehr C.S., Lybekk B., Polar cap OH airglow rotational temperature at the mesospause during a stratospheric warming event, Planet. Space Sci., 1984, Vol. 32, pp. 853-856.
- Walterscheid R.L., Sivjee G.G., Roble R.G., Mesospheric and lower thermospheric manifestations of a stratospheric warming event over Eureka, Canada (80N), Geophys. Res. Lett., 2000, Vol. 27 (18), p. 2897.