Model Estimates of Dynamics of the Vertical Structure of Solar Absorption and Temperature Effects under Background Conditions and in Extremely Smoke-Laden Atmosphere According to Data of Aircraft Observations

Resumo

We present the quantitative estimates of the vertical distribution of absorbed solar radiation and temperature effects in the background and extremely smoke-laden troposphere of Siberia, obtained using empirical data and numerical simulation. Vertical profiles of the aerosol characteristics are created based on an empirical model, relying on aircraft sensing of angular scattering coefficients and the content of absorbing particles at different altitudes. It is shown that, under the smoke-haze conditions, the radiation effect of aerosol particles with high black carbon content on the diurnal influx of solar radiation in the central part of the smoke layer exceeds 50%. The change in air temperature due to the absorption of solar radiation during the daylight hours is approximately 2.5–5.5 K when the optical depth of the smoke aerosol varies in the range 2 ≤ τ_smoke(0.55 μm) ≤ 4.