Tropospheric lapse rate and its changes in the Arctic from reanalysis data

M. G. Akperov; I. I. Mokhov; M. A. Dembitskaya; M. R. Parfenova

doi:10.1117/12.2503884

13 December 2018 Tropospheric lapse rate and its changes in the Arctic from reanalysis data

M. G. Akperov, I. I. Mokhov, M. A. Dembitskaya, M. R. Parfenova

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108337E (2018) https://doi.org/10.1117/12.2503884
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

Estimates of the tropospheric lapse rate γ and an analysis of its connection with the surface air temperature T_s in high latitudes of the Northern Hemisphere for summer and winter are performed using monthly-mean data from the ERAInterim reanalysis (1979-2014). According to the reanalysis data the lapse rate values increase from 4.7 K/km near the pole to 5.3 K/km in subpolar latitudes in winter and from 5.3 to 6.1 K/km in summer. The estimates of dγ/dTs in interannual variability are found positive over the most part of the Arctic from reanalysis data. At the same time, a negative correlation between γ and T_s was found for the Atlantic sector of the Arctic in winter and for the central Arctic in summer. It is also noted regional peculiarities in the connection of lapse rate with Arctic oscillation for winter and summer.

Citation Download Citation

M. G. Akperov, I. I. Mokhov, M. A. Dembitskaya, and M. R. Parfenova "Tropospheric lapse rate and its changes in the Arctic from reanalysis data", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108337E (13 December 2018); https://doi.org/10.1117/12.2503884

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