Research on acid deposition trend in sites under acid deposition monitoring network in East Asia (EANET)

Abstract

Regarding the 15-year data series (2000-2014) of 54 acid deposition monitoring sites within EANET network, the variable trend of acid deposition is identified by Seasonal Mann-Kendall method. The depositions of both H⁺ and nss-SO₄^2- is decreasing all over East Asia region in general, except for a few sites in South East Asia which present the increasing trend. Though acid rain phenomenon has probably declined in almost region. However, the NO3- deposition shows decreasing figure in North East Asia but increasing in South East Asia.