American Geophysical Union Become an AGU Member
Subscribe to AGU Journals		 AGU Home AGU Publications

Read Full Article (file size: 237451 bytes)    Cited by

GEOPHYSICAL RESEARCH LETTERS, VOL. 29, NO. 24, 2222, doi:10.1029/2002GL015757, 2002

On the relationship between Dasuopu Snow Accumulation and the Asian Summer Monsoon

Hongxu Zhao

Department of Physics, University of Toronto, Toronto, Ontario, Canada


G. W. K. Moore

Department of Physics, University of Toronto, Toronto, Ontario, Canada


Abstract

The Asian summer monsoon (ASM) is an important component of the global climate system. We investigate the relationship that exists between it and the snow accumulation record from an ice core drilled on the Dasuopu glacier in the Himalayas. This ice core record has been proposed as a proxy to study variability in the ASM. We argue that there is a weak direct expression of the ASM in the snow accumulation time series from the ice core. This is the result of the extreme elevation of the ice core site and the surface-trapped characteristic of the atmospheric moisture transport associated with the ASM. We will present evidence of a coupling between Dasuopu snow accumulation (DSA) and the Hadley and Walker circulations. In particular, we argue that the recent reduction in snow accumulation at the site is the result of an intensification of the regional Hadley circulation.

Published 28 December 2002.

Index Terms: 3374 Meteorology and Atmospheric Dynamics: Tropical meteorology; 1620 Global Change: Climate dynamics (3309); 1827 Hydrology: Glaciology (1863); 3354 Meteorology and Atmospheric Dynamics: Precipitation (1854); 3309 Meteorology and Atmospheric Dynamics: Climatology (1620).

Read Full Article (file size: 237451 bytes)    Cited by

Citation: Zhao, H., and G. W. K. Moore (2002), On the relationship between Dasuopu Snow Accumulation and the Asian Summer Monsoon, Geophys. Res. Lett., 29(24), 2222, doi:10.1029/2002GL015757.