When the rain is caused by cold front, cyclone or typhoon, the rainfall forecast skill is higher than warm front or subtropical high.
冷锋、气旋和台风影响下的降水预报准确率明显高于暖锋和副高影响下的降水。
When heat content increased, the ridge point of subtropical high moved more westly, and frequency of tropical cyclone moving from Pacific into South China Sea increased, otherwise it decreased;
热带西北太平洋西部热含量增加时，副热带高压脊点偏西，移入南海的热带气旋频数增加，反之减少。
When heat content increased, the ridge point of subtropical high moved more westly, and frequency of tropical cyclone moving from Pacific into South China Sea increased, otherwise it decreased;
热带西北太平洋西部热含量增加时，副热带高压脊点偏西，移入南海的热带气旋频数增加，反之减少。
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