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.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
