Influence Analysis of Quasi-biweekly Oscillation During the Low Temperature,Rain and Snow Weather in South China in 2007/2008 Winter
Abstract：By using daily NCEP/NCAR data and daily precipitation data for 727 stations supplied by National Meteorological Information Center,we analyzed the circulation background and the meteorological element field during the low temperature,rain and snow weather in South China in 2007/2008 winter from the low frequency oscillation perspective.The results show that,quasi-biweekly oscillation（QBWO） is an important mode of atmosphere variability during the low temperature,rain and snow weather in South China in 2007/2008 winter.By the propagation analysis of the low frequency oscillation,we know that 10-20 day low frequency wave propagates to the Bengal Bay from West Asia and the East African coast,and converges in the front of the southern branch trough,influencing the circulation of South China and resulting in precipitation in advance.
Keywords：quasi-biweekly oscillation（QBWO）low temperature and rain ＆ snowlow frequency propagationcirculation anomaly
Publication Date：2011-05-27
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )