Research output: Contribution to journal › Article
Statistical inhomogeneity of dates of sudden stratospheric warmings in the wintertime northern hemisphere. / Savenkova, E. N.; Gavrilov, N. M.; Pogoreltsev, A. I. ; Manuilova, R. O.
In: IZVESTIYA. ATMOSPHERIC AND OCEANIC PHYSICS, Vol. 53, No. 3, 06.2017, p. 251-258.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Statistical inhomogeneity of dates of sudden stratospheric warmings in the wintertime northern hemisphere.
AU - Savenkova, E. N.
AU - Gavrilov, N. M.
AU - Pogoreltsev, A. I.
AU - Manuilova, R. O.
N1 - Savenkova, E.N., Gavrilov, N.M., Pogoreltsev, A.I. et al. Statistical inhomogeneity of dates of sudden stratospheric warmings in the wintertime northern hemisphere. Izv. Atmos. Ocean. Phys. 53, 251–258 (2017). https://doi.org/10.1134/S0001433817030112
PY - 2017/6
Y1 - 2017/6
N2 - Using the data of meteorological information reanalysis, a statistical analysis of dates of the main sudden stratospheric warmings observed in 1958–2014 has been performed and their inhomogeneous distribution in winter months with maximums in the beginning of January, from the end of January to the beginning of February, and in the end of February has been shown. To explain these regularities, a climatological analysis of variations in the amplitudes and vertical components of Eliassen–Palm fluxes created by large-scale planetary waves (PWs), as well as of zonal-mean winds and deviations of temperature from their winter-average values in high northern latitudes at heights of up to 50 km from the surface has been carried out using the 20-year (1995–2014) collection of daily meteorological information from the UK Met Office database. During the aforementioned intervals of observing more frequent sudden stratospheric warmings, climatological maximums of temperature perturbations, local minimums of eastward winds, and local maximums of the amplitude and Eliassen–Palm fluxes of PWs with a zonal wavenumber of 1 in the high-latitude northern stratosphere were found. Distinctions between atmospheric characteristics averaged over two last decades have been revealed.
AB - Using the data of meteorological information reanalysis, a statistical analysis of dates of the main sudden stratospheric warmings observed in 1958–2014 has been performed and their inhomogeneous distribution in winter months with maximums in the beginning of January, from the end of January to the beginning of February, and in the end of February has been shown. To explain these regularities, a climatological analysis of variations in the amplitudes and vertical components of Eliassen–Palm fluxes created by large-scale planetary waves (PWs), as well as of zonal-mean winds and deviations of temperature from their winter-average values in high northern latitudes at heights of up to 50 km from the surface has been carried out using the 20-year (1995–2014) collection of daily meteorological information from the UK Met Office database. During the aforementioned intervals of observing more frequent sudden stratospheric warmings, climatological maximums of temperature perturbations, local minimums of eastward winds, and local maximums of the amplitude and Eliassen–Palm fluxes of PWs with a zonal wavenumber of 1 in the high-latitude northern stratosphere were found. Distinctions between atmospheric characteristics averaged over two last decades have been revealed.
KW - Climatology
KW - sudden stratospheric warming
KW - mean zonal wind
KW - temperature
KW - planetary waves
KW - stratospheric dynamics
KW - средняя атмосфера
KW - внезапные стратосферные потепления
KW - планетарные волны
KW - климатология
UR - https://elibrary.ru/item.asp?id=31027411
U2 - 10.1134/S0001433817030112
DO - 10.1134/S0001433817030112
M3 - Article
VL - 53
SP - 251
EP - 258
JO - Izvestiya - Atmospheric and Oceanic Physics
JF - Izvestiya - Atmospheric and Oceanic Physics
SN - 0001-4338
IS - 3
ER -
ID: 7731533