| 镇江地区高温气候特征分析及一次连续性高温天气的诊断 |
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| 引用本文： | 吴琼,郭煜,周勍,朱海涛,钱鹏.镇江地区高温气候特征分析及一次连续性高温天气的诊断[J].气象科学,2017,37(1):134-140. |
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| 作者姓名： | 吴琼 郭煜 周勍 朱海涛 钱鹏 |
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| 作者单位： | 南京大学 大气科学学院, 南京 210023;镇江市气象局, 江苏 镇江 212000,镇江市气象局, 江苏 镇江 212000,镇江市气象局, 江苏 镇江 212000,镇江市气象局, 江苏 镇江 212000,镇江市气象局, 江苏 镇江 212000 |
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| 基金项目： | 江苏省青年气象科研基金资助项目（Q201411） |
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| 摘 要： | 本文利用镇江1961—2013年的观测资料以及2.5°×2.5°的逐日NCEP再分析资料,在分析镇江地区高温气候特征的基础上,着重对2013年的连续性高温天气进行诊断。结果表明:镇江夏季高温日数有明显的上升趋势,突变点为2000年,突变后2001—2013年比1961—2000年的年平均高温日数增幅近9 d;镇江地区的高温日数存在3~4 a,6 a,9~13 a,19~27 a的周期,2000年后的准3 a周期稳定存在;强盛且稳定的副热带高压及南亚高压与副热带高压形成的垂直环流的下沉增温,是2013年8月4—18日连续高温产生的重要原因;温度平流和垂直加热对持续性高温天气起积极作用,非绝热加热为负值;连续高温期间海上台风路径偏西偏南,中高纬无明显冷空气活动且2013年梅雨结束时间较早,都为镇江地区出现连续性高温天气提供了有利条件。
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| 关 键 词： | 高温 MK检验 小波分析 热力学方程 梅雨 |
| 收稿时间： | 2015/7/24 0:00:00 |
| 修稿时间： | 2016/3/27 0:00:00 |
Analysis on climatic characteristics of high temperature and diagnosis of a persistent heat wave in Zhenjiang |
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| WU Qiong,GUO Yu,ZHOU Qing,ZHU Haitao and QIAN Peng.Analysis on climatic characteristics of high temperature and diagnosis of a persistent heat wave in Zhenjiang[J].Scientia Meteorologica Sinica,2017,37(1):134-140. |
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| Authors: | WU Qiong GUO Yu ZHOU Qing ZHU Haitao and QIAN Peng |
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| Institution: | School of Atmospheric Sciences, Nanjing University, Nanjing 210023, China;Zhenjiang Meteorological Bureau, Jiangsu Zhenjiang 212000, China,Zhenjiang Meteorological Bureau, Jiangsu Zhenjiang 212000, China,Zhenjiang Meteorological Bureau, Jiangsu Zhenjiang 212000, China,Zhenjiang Meteorological Bureau, Jiangsu Zhenjiang 212000, China and Zhenjiang Meteorological Bureau, Jiangsu Zhenjiang 212000, China |
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| Abstract: | Based on the observation data and NCEP reanalysis data in Zhenjiang area during 1961-2010, the climatic characteristics of high temperature in Zhenjiang was analyzed, and a continuous heat wave in 2013 was also particularly diagnosed. Results show that the number of high temperature days of Zhenjiang has an obvious rising trend, and the mutation point is in 2000 with nearly nine days increasing. The high temperature days of Zhenjiang region have periodic oscillations in 3-4 a, 6 a, 9-13 a, 19-27 a, after 2000, a 3 a stable cycle existed. Strong subtropical high control and the warming by descending draft of the vertical circulation between the subtropical high and South Asia high are important causes of the persistent heat wave from August 4 to 18, 2013. Temperature advection and vertical heating are considered as positive contribution to the continuous high temperature weather while the adiabatic heating is negative. The west and south typhoon, no obvious cold air activities in high latitude and the early ending of plum rains in 2013 provide favorable conditions for a continuous hot weather in Zhenjiang areas. |
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| Keywords: | High temperature Mann-Kendall inspection Wavelets analysis Thermodynamics equation Plum rains |
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