The difference of atmospheric chemical loadings shown by electrical conductivity of snow and ice between Antarctica, Arctic and Qinghai-Tibetan Plateau

摘要

The relationship of ECM with ice acidity and impurities concentrations are much different between the Qinghai-Tibetan Plateau and the polar regions. On the Qinghai-Tibetan Plateau, ECM is dependent on the mineral ions (i.e., Ca~2+, Mg~2+, SO~2-_4, etc.) mainly derived from crustal sources, thus displays a positive linear Correlation between ECM and these ions. While in polar ice sheets, however, ECM of Snow and ice is mainly dependent on the acidic roots such as Cl~0, SO~2-_4 and NO~-_3 that Mostly come from ocean.