Abrupt change of temperature and precipitation extremes in the arid region of Northwest China

Trends and abrupt detection of temperature and precipitation extremes are important in climate change research. Based on the meteorological data from 68 stations in the arid region of Northwest China (ARNC), we analyzed the trend and abrupt change in temperature and precipitation extremes from 1961 to 2010. Results showed that abrupt change in both temperature and precipitation extremes in Northwest China occurred in around 1986. Interestingly, an abrupt change in Index B of the Tibetan Plateau (TPI_B) was detected in 1985. The temperature and precipitation extremes had strong and significant associations with TPI_B over the period of 1961–2010 (R = 0.685, p