Atmospheric black carbon and surface albedo in the Russian Arctic in spring
A.A. Vinogradova1, T.B. Titkova2
1A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
2Institute of Geography RAS, Moscow, Russia
Keywords: Арктика, климат, атмосфера, черный углерод, альбедо поверхности, метеопараметры, множественная линейная регрессия, Arctic, climate, atmosphere, black carbon, surface albedo, meteorological parameters, multiple linear regression
Abstract
We are studying the statistical relationships between the atmospheric column black carbon (BC) and the surface albedo ( A ) based on MERRA-2 reanalysis data for four test areas near the Arctic coast of Russia in April 2010-2016. The analysis also includes atmospheric meteorological parameters from the WATCH website data: air temperature and amounts of liquid and solid precipitation. The statistical analysis has been carried out for daily average values. An increase in the air temperature is accompanied by a decrease in the surface albedo everywhere, both on a monthly scale and in daily variations. Snowfalls increase the surface albedo also everywhere. Reliable negative correlations between BC and A in April were found only on the Gydan Peninsula. Some years (different for different areas) with good correlations between day-to-day variations in A and BC values within a month, also with negative coefficients, were revealed. We estimated possible changes in albedo values, as well as in albedo radiative forcing due to variations in different parameters.
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