Transboundary transport of acid precipitation by cyclones of East Asia to the South of the Russian Far East

Abstract

Results from analyzing the cyclone paths over East Asia for the period 1997−2009 and the variability in chemical composition of atmospheric precipitation in Primorskii Krai are discussed. It is shown that southwesterly cyclones over Primorskii Krai became more frequent during the time period under consideration. The increase in the number of cyclones forming in the polluted atmosphere of urbanized areas in North-Eastern Asia led to an increase in acid deposition, which is confirmed by data from the international acid deposition monitoring stations of the international EANET network.

Impact of transboundary and natural factors on chemical composition of precipitation in the Far East of Russia

“…In some areas of the region, the acid-base index pH of integral samples of the snow accumulated during the winter was below 4 [4]. The changes in the atmospheric general circulation in East Asia are manifested in the increased frequency of southwestern cyclones coming to Primorye [8].…”