Black carbon air pollution near the Wrangel Island: comparison of Eurasian and American sources and their contributions
A.A. Vinogradova, A.V. Vasileva, Yu.A. Ivanova
A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
Keywords: atmosphere, pollution, black carbon, the Wrangel Island, long-range atmospheric transport, sources of black carbon, Eurasian and American contributions
Abstract
We analyze long-range atmospheric transport of black carbon (BC) to the Wrangel Island in the summer months (June-August) of 2015-2017. Air mass trajectories were calculated using the HYSPLIT model on the ARL NOAA website www.ready.arl.noaa.gov. The simplified model of an aerosol impurity transport in the atmosphere based on spatial distribution of sensitivity function to impurity emissions was used. The spatial locations of BC sources (anthropogenic and wildfires) and their emissions were taken from the websites http://edgar. jrc.ec.europa.eu/overview.php?v=431 and http://www.globalfiredata.org, respectively. We study and compare intensities, spatial locations, and interannual variations in BC anthropogenic and wildfire emissions to the atmosphere from the North-Eastern Eurasia and the North-Western North America. The contribution of Eurasian sources absolutely prevails over the contribution of American ones in surface BC concentration at the Wrangel Island. But, on the average, summertime contributions from wildfires and anthropogenic sources (without dividing them by territories) do not greatly differ, with the ratio ~ 5:3. |
