| 2017年辽宁省春夏季精细化气象干旱监测评估 |
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| 引用本文： | 李晶,王婉昭,刘东明,黄岩,王莹,李荣平.2017年辽宁省春夏季精细化气象干旱监测评估[J].气象与环境学报,2019,35(3):100-105. |
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| 作者姓名： | 李晶 王婉昭 刘东明 黄岩 王莹 李荣平 |
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| 作者单位： | 辽宁省气象科学研究所,辽宁 沈阳,110166;辽宁省气象科学研究所,辽宁 沈阳,110166;辽宁省气象科学研究所,辽宁 沈阳,110166;辽宁省气象科学研究所,辽宁 沈阳,110166;辽宁省气象科学研究所,辽宁 沈阳,110166;辽宁省气象科学研究所,辽宁 沈阳,110166 |
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| 基金项目： | 公益性（气象）行业科研专项"东北地区土壤墒情监测预报及其对主要农作物的影响分析"（GYHY201106026）资助。 |
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| 摘 要： | 基于辽宁省1114个国家级和区域级地面台站1961年以来的逐日气温和降水观测资料，利用距离平方反比法差值生成了1717个乡镇的气象资料序列，采用气象干旱综合监测指数统计分析了辽宁省2017年4-8月精细化到乡镇的气象干旱特征。结果表明：2017年辽宁省春夏季异常高温，同时降水异常偏少，致使气象干旱不断发展；干旱在4月5日前从中部和北部开始，4月末扩展到西部，5-6月再向东南发展，波及88%的乡镇，7月以来气象干旱程度开始减轻；气象干旱持续时间长的乡镇主要集中在中部和北部，最长持续时间153 d；受气温偏高和降水过程的影响，中度以上气象干旱面积呈阶段性变化，且极端干旱的发展伴随高温时段。由于气象干旱不同于农业干旱，在开展为农服务时要因地制宜采取应对措施。
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| 关 键 词： | 精细化 综合气象干旱指数 干旱面积 |
| 收稿时间： | 2017-12-11 |
Monitoring and assessment of meteorological drought in spring and summer of 2017 for Liaoning province |
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| LI Jing,WANG Wan-zhao,LIU Dong-ming,HUANG Yan,WANG Ying,LI Rong-ping.Monitoring and assessment of meteorological drought in spring and summer of 2017 for Liaoning province[J].Journal of Meteorology and Environment,2019,35(3):100-105. |
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| Authors: | LI Jing WANG Wan-zhao LIU Dong-ming HUANG Yan WANG Ying LI Rong-ping |
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| Institution: | Liaoning Institute of Meteorological Science, Shenyang 110166, China |
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| Abstract: | Based on daily temperature and precipitation data of 1114 national and regional weather stations during the period from 1961 to 2017,a town-scale meteorological dataset was generated using the inverse distance squared method of interpolation.The characteristics of drought in Liaoning province during April to August in 2017 were investigated based on meteorological drought comprehensive index (MCI).The results show that abnormal high temperature and lacking of rainfall in spring and summer led to the severe meteorological drought in Liaoning province.The meteorological drought started from the central and northern areas on April 5,and then extended to the western areas at the end of April.Finally,the meteorological drought extended to the southeast of Liaoning in May and June.Statistics analysis showed that 88 percent of the studied towns affected by drought.The drought started to relieve since July.The towns that experienced longer duration of drought were concentrated in the central and northern area of Liaoning and the longest duration of drought was 153 d.Due to high temperature and shortage of rainfall,regions that suffered drought above mid-severe extent were varied with time.Extreme meteorological drought usually accompanied with high temperature.Since there are differences existing between meteorological drought and agricultural drought,the right countermeasures should be taken for agriculture service. |
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| Keywords: | Refinement Meteorological drought comprehensive index (MCI) Drought area |
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