Changes in daily climate extremes in China and their connection to the large scale atmospheric circulation during 1961–2003

AbstractsBased on daily maximum and minimum surface air temperature and precipitation records at 303 meteorological stations in China, the spatial and temporal distributions of indices of climate extremes are analyzed during 1961–2003. Twelve indices of extreme temperature and six of extreme precipitation are studied. Temperature extremes have high correlations with the annual mean temperature, which shows a significant warming of 0.27°C/decade, indicating that changes in temperature extremes reflect the consistent warming. Stations in northeastern, northern, northwestern China have larger trend magnitudes, which are accordance with the more rapid mean warming in these regions. Countrywide, the mean trends for cold days and cold nights have decreased by −0.47 and −2.06 days/decade respectively, and warm days and warm nights have increased by 0.62 and 1.75 days/decade, respectively. Over the same period, the number of frost days shows a statistically significant decreasing trend of −3.37 days/decade. The length of the growing season and the number of summer days exhibit significant increasing trends at rates of 3.04 and 1.18 days/decade, respectively. The diurnal temperature range has decreased by −0.18°C/decade. Both the annual extreme lowest and highest temperatures exhibit significant warming trends, the former warming faster than the latter. For precipitation indices, regional annual total precipitation shows an increasing trend and most other precipitation indices are strongly correlated with annual total precipitation. Average wet day precipitation, maximum 1-day and 5-day precipitation, and heavy precipitation days show increasing trends, but only the last is statistically significant. A decreasing trend is found for consecutive dry days. For all precipitation indices, stations in the Yangtze River basin, southeastern and northwestern China have the largest positive trend magnitudes, while stations in the Yellow River basin and in northern China have the largest negative magnitudes. This is inconsistent with changes of water vapor flux calculated from NCEP/NCAR reanalysis. Large scale atmospheric circulation changes derived from NCEP/NCAR reanalysis grids show that a strengthening anticyclonic circulation, increasing geopotential height and rapid warming over the Eurasian continent have contributed to the changes in climate extremes in China.

[1]  Russell S. Vose,et al.  Maximum and minimum temperature trends for the globe: An update through 2004 , 2005 .

[2]  Xiaohua Pan,et al.  Trends in temperature extremes during 1951–1999 in China , 2003 .

[3]  L. Hua,et al.  The impact of urbanization on air temperature across China , 2008 .

[4]  Thomas C. Peterson,et al.  Changes in North American extremes derived from daily weather data , 2008 .

[5]  C. D. de Ronde,et al.  Mineralized microbes from Giggenbach submarine volcano , 2008 .

[6]  Yuping Yan,et al.  Changes in daily climate extremes in the eastern and central Tibetan Plateau during 1961–2005 , 2008 .

[7]  Xuebin Zhang,et al.  Trends in Total Precipitation and Frequency of Daily Precipitation Extremes over China , 2005 .

[8]  W. Hoeffding,et al.  Rank Correlation Methods , 1949 .

[9]  D. Gong,et al.  Enhancement of the warming trend in China , 2000 .

[10]  C. Tucker,et al.  Evidence for a significant urbanization effect on climate in China. , 2004, Proceedings of the National Academy of Sciences of the United States of America.

[11]  David Lister,et al.  Urbanization effects in large-scale temperature records, with an emphasis on China , 2008 .

[12]  G. Meehl,et al.  Climate extremes: observations, modeling, and impacts. , 2000, Science.

[13]  Ming Xu,et al.  Observed trends of precipitation amount, frequency, and intensity in China, 1960–2000 , 2005 .

[14]  Thomas C. Peterson,et al.  Monitoring Changes in Climate Extremes: A Tale of International Collaboration , 2008 .

[15]  Thomas C. Peterson,et al.  Changes in daily temperature and precipitation extremes in central and south Asia , 2006 .

[16]  R. Reynolds,et al.  The NCEP/NCAR 40-Year Reanalysis Project , 1996, Renewable Energy.

[17]  P. Sen.  Estimates of the Regression Coefficient Based on Kendall's Tau , 1968 .

[18]  J. V. Revadekar,et al.  Global observed changes in daily climate extremes of temperature and precipitation , 2006 .

[19]  M. J. MANTONa,et al.  TRENDS IN EXTREME DAILY RAINFALL AND TEMPERATURE IN SOUTHEAST ASIA AND THE SOUTH PACIFIC : 1961 – 1998 , 2001 .

[20]  M. Rusticucci,et al.  Trends in Total and Extreme South American Rainfall in 1960–2000 and Links with Sea Surface Temperature , 2006 .

[21]  M. Haylock,et al.  Change in mean temperature as a predictor of extreme temperature change in the Asia–Pacific region , 2005 .

[22]  R. Katz,et al.  Extreme events in a changing climate: Variability is more important than averages , 1992 .

[23]  M. Haylock,et al.  Observed coherent changes in climatic extremes during the second half of the twentieth century , 2002 .

[24]  Christopher A. T. Ferro,et al.  Global changes in extreme daily temperature since 1950 , 2008 .

[25]  Wang Huijun,et al.  The weakening of the Asian monsoon circulation after the end of 1970's , 2001 .

[26]  Robert Lund,et al.  Detection of Undocumented Changepoints: A Revision of the Two-Phase Regression Model , 2002 .

[27]  Thomas C. Peterson,et al.  Changes in precipitation and temperature extremes in Central America and northern South America, 1961–2003 , 2005 .

[28]  Mark Henderson,et al.  Taking China's Temperature: Daily Range, Warming Trends, and Regional Variations, 1955–2000 , 2004 .

[29]  A. Mhanda,et al.  Changes in temperature and precipitation extremes in western central Africa, Guinea Conakry, and Zimbabwe, 1955–2006 , 2009 .

[30]  D. Gong,et al.  Severe summer rainfall in China associated with enhanced global warming , 2000 .

[31]  Carlos A. Coelho,et al.  Evidence of trends in daily climate extremes over southern and west Africa , 2006 .

[32]  Thomas C. Peterson,et al.  Maximum and Minimum Temperature Trends for the Globe , 1997 .

[33]  Ming Xu,et al.  Steady decline of east Asian monsoon winds, 1969–2000: Evidence from direct ground measurements of wind speed , 2006 .

[34]  Thomas C. Peterson,et al.  Recent changes in climate extremes in the Caribbean region , 2002 .

[35]  Guoyu Ren,et al.  Urbanization Effects on Observed Surface Air Temperature Trends in North China , 2008 .

[36]  Chong-yu Xu,et al.  Spatial and temporal variability of precipitation maxima during 1960-2005 in the Yangtze River basin and possible association with large-scale circulation , 2008 .

[37]  Xiaolan L. Wang.  Comments on “Detection of Undocumented Changepoints: A Revision of the Two-Phase Regression Model” , 2003 .

[38]  Xiaolan L. Wang,et al.  Changes of Extreme Wave Heights in Northern Hemisphere Oceans and Related Atmospheric Circulation Regimes , 2001 .

[39]  C. F. Kossack,et al.  Rank Correlation Methods , 1949 .

[40]  M. Rusticucci,et al.  Observed Trends in Indices of Daily Temperature Extremes in South America 1960–2000 , 2005 .

[41]  G. Ren,et al.  Changes in means and extreme events of temperature and precipitation in the Asia‐Pacific Network region, 1955–2007 , 2009 .

[42]  Vincent R. Gray.  Climate Change 2007: The Physical Science Basis Summary for Policymakers , 2007 .

[43]  罗勇,et al.  Detection, Causes and Projection of Climate Change over China： An Overview of Recent Progress , 2007 .

[44]  W. Collins,et al.  The NCEP–NCAR 50-Year Reanalysis: Monthly Means CD-ROM and Documentation , 2001 .

[45]  Qiang Zhang,et al.  Changes of Climate Extremes in China , 1999 .

[46]  Xuebin Zhang,et al.  Trends in Middle East climate extreme indices from 1950 to 2003 , 2005 .

[47]  Yuqing Wang,et al.  Observed trends in extreme precipitation events in China during 1961–2001 and the associated changes in large‐scale circulation , 2005 .