Impact of the North Atlantic Oscillation on the Dipole Oscillation of summer precipitation over the central and eastern Tibetan Plateau

摘要

An analysis of the spatiotemporal variability in summer precipitation during the period 1961-2010 is presented based on monthly precipitation datasets from 66 meteorological stations in the central and eastern Tibetan Plateau (TP). By applying empirical orthogonal function (EOF) analysis, a strong reversal is found in the variability of summer precipitation between the northeastern and the southeastern TP on the inter-annual timescale; this reversal is defined as the Dipole Oscillation in summer precipitation over the TP.