Simulation of possible climatic effects of black carbon originated from extreme fires of Russian boreal forest to Arctic
|Theme||1. Environmental protection|
|Session Name||1.9 Climate change, forests and other ecosystems health in the Arctic region|
|Datetime||Sep 07, 2018 10:00 AM - 10:15 AM (UTC +3)|
|Author(s)||Veronika Ginzburg (IGCE, Russian Federation), Alexey Ryaboshapko (IGCE, Russian Federation), Anna Pastukhova (IGCE, Russian Federation), Anastasia Revokatova (IGCE, Russian Federation), Sergei Kostrykin (INM, Russian Federation)|
ВС can differently influence climate. In addition to the main effects there are numerous feedbacks between BC and climatic parameters. Possibility of black carbon transport emitted from extreme forest fires to Russian Arctic was evaluated and presented by authors at PEEX-2017. The aim of this work is to estimate influence of black carbon in the atmosphere and its deposition on ice/snow surface to radiative forcing and albedo modification in Arctic.
The BC climatic effect from different forest fires scenarios on the Arctic was estimated by the aerosol block of climate model developed by Institute of Numerical Mathematics (INMCM4). The experiments were made for three scenarios in month with the greatest probability of forest fire (August): extreme fires in Yakutia region, statistic forest fires over all Northern Hemisphere from 2001 to 2015 by GFEDv2 database and base scenario without BC sources.
The model experiments shown that the shortwave radiation balance at the surface for the territories closest to the BC source (the Laptev Sea), in the month of the fire in Yakutia scenario is 5% less than the shortwave radiation balance in scenario without BC sources, and by 1.5-2% more than scenario with all fires in the Northern Hemisphere. There were no significant differences in the albedo between experiments with a source and without a source. This question requires further study.
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