Journal of Geographical Sciences ›› 2009, Vol. 19 ›› Issue (1): 12-24.doi: 10.1007/s11442-009-0012-5

• Climate and Environmental Change • Previous Articles     Next Articles

Association of North Atlantic Oscillations with Aksu River runoff in China

LI Hongjun1,2, JIANG Zhihong1, YANG Qing2   

  1. 1. School of Atmospheric Sciences, Nanjing University of Information Science &|Technology, Nanjing 210044, China|
    2. Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China
  • Received:2008-01-22 Revised:2008-06-28 Online:2009-02-25 Published:2009-02-25
  • Supported by:

    Special Fund for Social Public Good Project of the Ministry of Science and Technology, No.2004DIB3J118; No.2005DIB6J113; GYHY (QX) 2007-6-8; Desert Meteorological Fund, No.2007011

Abstract:

The relationship between North Atlantic Oscillations (NAO) and Aksu River Runoff (ARR) was investigated by using the wavelet transform (WT), cross wavelet transform (CWT), correlation and linear trend analyses, and abrupt change test. The main results are as follows: the interannual/decadal variation and period analyses of ARR and NAO reveal that the both were close correlated each other; the CWT indicates that the correlation was good between ARR and NAO at all periods in the 1990s, because the significant correlation areas mainly concentrated in the 1990s; the variations in the trend strength of ARR and NAO were consistent; the abrupt change of NAO was also temporally consistent with that of ARR, which exerted impact on the Aksu River Basin (ARB) climate and then the ARR through atmospheric circulation variation.

Key words: Aksu River runoff, NAO, cross wavelet transform, correlation, abrupt change test