Climate Characteristics of Freezing Weather in China
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Abstract:
Study on climate characteristics of Chinese freezing weather is important to forecast, preassessment and disaster prevention. The 48year averaged rime days and freezing rain days were computed to reflect the frequency and spatial distribution of freezing weather. The observed wire ice load was transformed into standard ice load to analyze the maximum ice load distribution. The spatial and temporal variations of freezing weather were analyzed by EOF expansion. Trends of Chinese yearly maximum ice load were studied. Results show that freezing weather appeared in most parts of China. Rime mainly appeared in northern China while freezing rain appeared in southern China. Yearly freezing days increase with elevation while less over height of 3100 m. Under the global warming background, the frequency of freezing weather decreased while the strength was stronger in most parts of China.