2013年夏季异常晴热高温天气的成因分析

Analysis of Abnormal High Temperature Causes in the Summer of 2013

摘要: 2013年7月到8月中旬我国南方地区遭遇60年来最强一次晴热高温酷暑天气，这次高温天气具有强度强、影响范围大、持续时间长、降水量少等特点。本文对此次高温天气的特点及出现的原因进行分析，发现强大的副高控制是高温天气出现的直接原因，但夏季极涡的位置、冷空气的活动、降水量、台风的活动频数、梅雨量和青藏高原积雪等，它们均对副高强度和位置产生作用，从而影响高温天气的出现。

Abstract: From July to mid August in 2013, southern China suffered the strongest high temperature weather for 60 years, and the high temperature weather has characteristics of strength strong, a large area of effect, duration long and low precipitation. In this paper, we analyze the characteristics and causes of the high temperature weather, finding that strong subtropical high is the direct cause of the high temperature weather, but the summer position of the polar vortex, cold air activity, rainfall, frequency of the typhoon activity, Meiyu precipitation and snow cover over the Tibetan Plateau, all having impacts on the position and strength of the subtropical high, thus affecting the appearance of high temperature weather.