Analysis of Weather Climatic Features of the First Frost in the Northeast Part of China

Based on the data of observations and weather charts,weather-climatic features of the first frost in the northeast part of China during the latest 31 years were analyzed,and the circulation characteristics and weather-developing process at the time of 24 hours before the first frost were discussed,and the geographic and space-time distribution features of the first frost and some useful criteria were presented,which play a reference role in real-time forecast operations.

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