ON THE VERTICAL DISTRIBUTION OF DUST AEROSOL IN WEAK AND MODERATE WINDS-Reference-Cited by-同舟云学术

ON THE VERTICAL DISTRIBUTION OF DUST AEROSOL IN WEAK AND MODERATE WINDS

Published:2023-02-01 Issue:2 Volume:509 Page:250-258
ISSN:2686-7397
Container-title:Доклады Российской академии наук. Науки о Земле
language:
Short-container-title:Doklady Rossijskoj akademii nauk. Nauki o Zemle

Author:

Malinovskaya Е. A.¹,Chhetiani O. G.¹,Golitsyn G. S.¹,Lebedev V. A.¹

Affiliation:

1. A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences

Abstract

The height distribution of dust aerosol in the surface layer based on measurements made in the summer of 2020–2021 in arid conditions on the territory of the Republic of Kalmykia is considered. For profiles of aerosol concentration under conditions of weak winds, a characteristic gradual slope with an index close to the value of –0.5. When the wind strengthens, the profile slope takes values closer to the degrees known for the conditions of saltation. –0.7…–1.0 (and steeper). The observed regularities can be explained by the character of motion of dust particles rising from the hot surface together with the surrounding warmed air volume, which is different for fine (1 μm) and coarse (1 μm) particle fractions.

Publisher

The Russian Academy of Sciences

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