1981-2020年河南省近地面风速时空分布特征

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中文摘要：利用1981-2020年河南省日平均10m风速观测资料,对河南省风速的时空分布特征进行了分析评估.结果表明,河南省风速的气候态具有明显的季节循环特征,在冬、春季节地表风速较大,夏、秋季节风速较小,并且呈现出东强西弱的空间分布特征.在年循环中2月到3月风速增幅最大,其余月份间的风速演变较为平缓.在风速变化趋势方面,空间分布主要表现为西升东降的特征,豫西从过去风速最弱的地区一跃成为近10年风速最大的地区,这也与其他地区风速整体变弱有关.风速EOF的第二模态表明,河南省风速同时也具有一定的年代际变化特征.此外,风速2-9年的年际变率弱于年代际的,即风速的短期变化具有平稳性;但在气候变化的大背景下,出现了系统性的变化趋势,且具有明显的区域性差异.

外文标题：Spatio-temporal Distribution Characteristics of Near-surface Wind Speed in Henan Province from 1981 to 2020

外文摘要：Based on the observation data of daily average wind at 10 m height in Henan Province in 1981-2020,the spatial and temporal distribution characteristics of wind speed in Henan Province are an-alyzed and evaluated.The results show that the climate state of wind speed in Henan Province is featured with obvious seasonal cycles.The surface wind is strong in winter and spring,but weak in summer and autumn.Spatially,the wind speed in the eastern part of Henan is higher than in the western part.In the annual cycle,the wind speed increases the most from February to March,while the wind speed in the other months changes gently.In terms of its variation trend,the wind speed has the spatial characteristics of strengthening in western Henan but slowing down in the eastern part.Especially,the western Henan has altered from the region with the weakest wind to the region blowing strongest wind in the past 10 years,which is also associated with the overall weakening of winds in other regions.The second mode of EOF shows that the wind speed in Henan Province also has certain interdecadal variation characteristics.In addition,the contribution of interannual variability in the 2-9-year cycle is significantly weaker than that of interdecadal and trend,that is,the short-term change of wind speed is stable.However,in the context of climate change,there has been a systematic trend in the changes of wind speed with obvious regional differences.

外文关键词：

mean speed of 10 m windclimatology characteristicslinear trendinterannual and interdecadal variability

作者：

孙睿藻、魏璐、程凯琪、李伊吟、杨婷、谢博宇

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作者单位：

中国气象局·河南省农业气象保障与应用技术重点开放实验室,郑州 450003

河南省风能太阳能气象工程研究中心,郑州 450003

河南省气象服务中心,郑州 450003

河南省气候中心,郑州 450003

国网河南省电力公司电力科学研究院,郑州 450052

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关键词：

10 m平均风速气候态特征线性趋势年际与年代际变率

基金：

河南省科技研发计划联合基金(应用攻关类)项目河南省科技研发计划联合基金(应用攻关类)项目中国气象局·河南省农业气象保障与应用技术重点实验室应用技术研究基金面上项目国家自然科学基金项目

项目编号：

232103810092222103810093KM20231742205038

出版年：

2024

DOI：

10.16765/j.cnki.1673-7148.2024.03.003

气象与环境科学

河南省气象局

气象与环境科学

CSTPCD

影响因子：1.28

ISSN：1673-7148

年,卷(期)：2024.47(3)

参考文献量19