Based on daily mean surface temperature data of 18 meteorological stations over Shandong province during 1961—2008,the thresholds of extreme high and low temperature events have been determined for each station by the centesimal value method,and then,the spatial characteristics and temporary trends of extreme temperature frequency for recent 48 years have been analyzed.The results show that there was a great spatial difference in both annual extreme high and low temperature frequency over Shandong Province ...
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