杜飞,陈凯麒,刘晓波,王世岩,黄爱平,董飞,刘畅,杜彦良,阳星,孙龙

• 1:流域水循环模拟与调控国家重点实验室
• 2:中国水利水电科学研究院

摘要(Abstract)：

【目的】大型浅水湖泊的风场是影响湖泊流场、水体富营养化和藻华运移聚集规律的关键因素之一，仅依托气象站点的观测数据难以有效捕捉湖面风场在空间和时间上的快速变化。为精细刻画湖泊高频变化风场，辨识其时空变化特征，【方法】以巢湖为研究对象，综合利用气象观测数据、全球再分析数据集和地理静态数据，通过中尺度天气预报模式和地理空间分析技术，模拟分析巢湖地区2019年高时空分辨率的风场变化过程。【结果】结果显示：巢湖区域风速由东向西、由南向北、由湖面向陆面逐渐减弱；湖面主导风向为东风和偏东风，主导风速为二级至四级，湖面平均风速在11月最大，12月次之，5月最小，不同季节湖面平均风速由大到小依次为冬季、秋季、夏季和春季。【结论】结果表明：巢湖在白天(夜晚)出现冷(暖)湖效应，其风场在早上6时和夜晚23时出现陆风和湖风转换；西半湖受湖陆风和城市热岛影响显著，在夏季会出现明显的环湖湖风锋，其湖风锋穿透内陆距离约4.7～9 km;东半湖受山谷风影响显著，在东南部山脉以东湖区易形成低风速区，在湖口附近受狭管效应易形成高风速区。通过研究成果可进一步认知巢湖区域风场特征，为巢湖水生态环境治理提供技术支撑。

关键词(KeyWords)： 巢湖;风场;湖陆风;中尺度天气预报模式;气候变化;时空变化;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(U2040211);; 国家重点研发计划项目研究课题(2022YFC3201804);; 三峡后续工作项目(WE1222B112022、WE0161A012023)

作者(Author): 杜飞,陈凯麒,刘晓波,王世岩,黄爱平,董飞,刘畅,杜彦良,阳星,孙龙

DOI: 10.13928/j.cnki.wrahe.2024.02.004

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