Mixing layer height in the atmosphere above quasi-homogeneous climatic territories and Russian Arctic seas
A.A. Vinogradova1,2, E.I. Kotova2, A.S. Lokhov2
1A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
2P.P. Shirshov Institute of Oceanology, Moscow, Russia
Keywords: troposphere, atmospheric surface layer, mixing layer height, quasi-homogeneous climatic territory, Russian Arctic seas
Abstract
The propagation and accumulation of impurities in the near-surface atmospheric layer largely depend on layer stability, which can be quantitatively characterized by the mixing layer height (MLH). For the first time, using a single methodology, the average values for 2001-2021 were estimated for different territories of Russia in the central months of seasons separately for daytime and nighttime. The analysis is based on MLH (or atmospheric mixing depht) values from the website [ www.arl.noaa.gov] obtained during long-term studies of the long-range air mass transport to the various Russian regions. The MLH values averaged through the area over individual mainland quasi-homogeneous climatic territories or over Russian Arctic seas are given, as well as the spatial distribution of MLH over the Russian territory on a geographical grid of 1° × 1°. The results of the study can be used in environmental assessments of, for example, the atmospheric pollution potential, fluxes of aerosol impurities onto the underlying surface, sources of air pollution and the degree of their impact on the environment and humans, as well as in comparative analysis of climate of various Russian regions. |
