不同路径型台风对鹤地水库集雨区降水的影响

符靖茹, 徐金勤, 蔡孙平, 谭孟祥, 于洲, 林卉娇

raybet体育在线 院报 ›› 2025, Vol. 42 ›› Issue (9) : 106-113.

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raybet体育在线 院报 ›› 2025, Vol. 42 ›› Issue (9) : 106-113. DOI: 10.11988/ckyyb.20240947
水灾害

不同路径型台风对鹤地水库集雨区降水的影响

作者信息 +

Impact of Typhoons with Different Track Types on Precipitation in Catchment Area of Hedi Reservoir

Author information +
文章历史 +

摘要

降水量的变化是水库蓄水和调度的重要参考因素。基于台风路径资料、集雨区观测点的逐日降水观测资料以及Micaps数据,利用统计学方法研究影响鹤地水库集雨区的台风降水变化特征及台风暴雨环流形势场配置。结果表明:近32 a来影响集雨区的台风增加趋势为0.33个/(10 a),存在7 a的周期振荡,7—9月份是台风影响高峰期;不同路径型台风的降水特征存在较大差异,西路型台风降水过程雨量、雨强差异较大,集雨区南部降水比北部地区强,且局地性暴雨居多;中路型台风降水过程雨量大、强降水范围大、维持时间相对较长,集雨区全区以暴雨到大暴雨为主;东路型降水各站点雨量差异很大;此外,造成鹤地水库上游集雨区台风暴雨的环流主要由副热带高压、西南季风、冷空气共同影响引起,初步建立西路型、中路型台风暴雨的环流形势场经验预报方法。

Abstract

[Objective] Variations in precipitation are important references for reservoir storage and scheduling. This study aims to reveal the precipitation patterns in the catchment area of the Hedi Reservoir under typhoons with different track types (west-track, middle-track, east-track), establish related forecasting experience, and improve typhoon precipitation forecast services. [Methods] Using typhoon track data, daily precipitation observations from monitoring stations in the catchment area, and MICAPS data, statistical methods including linear trend analysis and Morlet wavelet analysis were used to investigate the variation characteristics of typhoon precipitation and the circulation pattern configurations of typhoon-induced rainstorms affecting the catchment area of Hedi Reservoir. [Results] The results showed that: (1) over the past 32 years, the number of typhoons affecting the catchment area showed an increasing trend of 0.33 events per decade, with a 7-year periodic oscillation. The peak typhoon season occurred from July to September, accounting for 77.2% of annual typhoon impact.(2) Typhoon tracks affecting the catchment area were classified into three types: west-track, middle-track, and east-track. Middle-track type was the most frequent, accounting for 46.8% of the total, followed by west-track type at 44.3%, while east-track type was the least frequent, accounting for 8.9%.(3) There were significant differences in precipitation characteristics among typhoons with different track types. West-track typhoons showed large variations in precipitation amount and intensity, with stronger precipitation in the southern catchment area and frequent localized rainstorms. Middle-track typhoons were characterized by large rainfall amounts, extensive areas of intense precipitation, and relatively prolonged duration, with rainstorms to heavy rainstorms dominating the entire catchment area. For east-track typhoons, rainfall amounts varied greatly across stations, and there was currently no reliable forecasting experience.(4) The typhoon-induced rainstorms in the upstream catchment area of Hedi Reservoir were mainly caused by the combined influence of the western Pacific subtropical high, the southwest monsoon, and cold air. Based on an analysis of historical typhoon circulation patterns, an empirical forecasting method for the circulation patterns of west-track and middle-track typhoon-induced rainstorms was preliminarily developed. [Conclusion] The results of this study indicate that the precipitation in the catchment area of the Hedi Reservoir is closely related to typhoon tracks. Forecasting of typhoon tracks and empirical prediction of their circulation patterns can serve as a reference for accurately forecasting reservoir precipitation. These findings provide important guidance for the rational operation of the Hedi Reservoir, coordinated water storage scheduling, meteorological disaster prevention and mitigation, and the full realization of maximum comprehensive benefits.

关键词

集雨区 / 降水变化特征 / 环流形势场 / 台风 / 降水观测资料 / Micaps数据 / 鹤地水库 / 水库蓄水和调度

Key words

catchment area / precipitation change characteristics / circulation flow pattern / typhoon / precipitation observation data / Micaps data / Hedi Reservoir / reservoir storage and forecast

引用本文

导出引用
符靖茹, 徐金勤, 蔡孙平, . 不同路径型台风对鹤地水库集雨区降水的影响[J]. raybet体育在线 院报. 2025, 42(9): 106-113 https://doi.org/10.11988/ckyyb.20240947
FU Jing-ru, XU Jin-qin, CAI Sun-ping, et al. Impact of Typhoons with Different Track Types on Precipitation in Catchment Area of Hedi Reservoir[J]. Journal of Changjiang River Scientific Research Institute. 2025, 42(9): 106-113 https://doi.org/10.11988/ckyyb.20240947
中图分类号: P458.1    TV212 (水利规划、水电规划)   

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借助现代信息技术手段提高水库水政监管的效率与水平,进而为水库水政执法提供科学依据,是当前新形势下的必然选择。以鹤地水库为例,综合采用无人机航测、地图缓存、遥感水质参数反演以及“互联网+”技术研发了一套完整的水库水政监管系统,实现“空天地”一体化的水库水资源监控目标,以更好地辅助库区管理和水政执法,维护库区生态平衡,保障水库生产生活用水安全。系统的实际应用表明,该监管平台在实现海量、多源、异构数据整合的基础上,能对库区范围内的各类水事行为、水质安全状况、水库运行状态起到高效、动态、全面的把握与监管,使得库区管理和水政执法更加科学、准确、及时、高效。研究成果可为全面提升水库水政监管的能力和水平提供参考。
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It is a very inevitable choice to improve the efficiency and level of reservoir water administration supervision with the help of modern information technology under the current situation. A complete reservoir water administration and supervision system for Hedi reservoir is developed by integrating unmanned aerial vehicle survey, map cache, remote sensing inversion of water quality and “Internet+” technology. The supervision platform achieved the goal of air-space-ground integration for reservoir water resource, giving support for reservoir management and water law enforcement, maintaining ecological balance in reservoir area, and ensuring the water safety of production and living. Practical application of the system demonstrates that the supervision platform which is based on the integration of massive, multi-source and heterogeneous data, can effectively, dynamically and comprehensively grasp and monitor different water-related behaviors, water quality safety conditions and reservoir operation status within the reservoir area. This platform can also promote the reservoir management and water law enforcement to be more scientific, accurate, timely and efficient.
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摘要
基于1960—2017年2 000多个气象台站逐日降水数据和中国气象局热带气旋(TC)最佳路径资料集,采用客观天气图分析法(OSAT)识别得到TC降水。研究表明,中国TC降水总体呈显著下降趋势,较12年前的研究结果下降趋势变缓;TC盛期(7~9月)降水占到TC总降水的78.5%,TC盛期降水和TC非盛期降水均呈显著下降趋势。TC降水气候趋势在空间分布上以减少为主要特征,并表现出明显的地域差异,自南向北呈“减少—增多—减少”的分布型,减少趋势中心位于广东和海南。按TC影响期最大强度分级(弱TC、中等强度TC和强TC)研究不同强度TC降水的变化,结果显示,强TC降水表现出显著减少趋势,主要决定着TC总降水的影响范围和趋势等主要特征。进一步分析发现,影响TC频数在1960—2017年呈显著减少趋势,并在1995年发生突变;对1995年前后2个时期的对比研究显示,与前一时期(1960—1994年)相比,后一时期(1995—2017年)影响TC活动频次在20°N以南的海域呈现出显著的减少趋势,减少大值中心位于南海北部,而且这一特征也主要由影响TC中的强TC所决定;强TC的这一变化趋势导致了华南地区尤其是广东和海南TC降水日数的减少,进而使得TC降水减少。
(YANG Hui, REN Fu-min, YANG Ming-ren. Impact of Different Intensity Tropical Cyclones on Precipitation Changes in China[J]. Advances in Earth Science, 2019, 34(7): 747-756. (in Chinese))

Based on the daily precipitation data of more than 2 000 meteorological stations from 1960 to 2017 and the tropical cyclone (TC) best-track data of the China Meteorological Administration, the TC precipitation was identified by the Objective Synoptic Analysis Technique (OSAT). The research shows that the TC precipitation in China has a significant downward trend, which is slower than that of the research results 12 years ago. The TC precipitation in the peaking season (July to Sepember) accounted for 78.5% of the total TC precipitation. Both TC precipitation in peaking season and other months showed a significant downward trend. The TC precipitation climate trend is mainly characterized by reduction in spatial distribution, and shows obvious regional differences. From south to north, there is a distribution of “decreasing-increasing-decreasing”, and the decreasing trend centers are located in Guangdong and Hainan. According to the maximum intensity in the TC influence period, we classified TCs into three levels (weak TCs, medium intensity TCs and strong TCs) and studied the variations of TC precipitation in different intensities. The results show that the strong TC precipitation shows a significant decrease trend, which mainly determines the influence range and trend of TC total precipitation. Further analysis found that the frequency of affecting TC showed a significant reduction trend during the time period of 1960-2017 and an abrupt shift occurred in 1995. A comparative study of the two periods before and after 1995 showed that compared with the previous period (1960-1994), the frequency of TCs in the latter period (1995-2017) showed a significant decreasing trend in the south of 20°N. The maximum decreasing center was located in the northern part of the South China Sea, and this feature was mainly affected by the strong TC. It was decided that this trend of strong TC led to a decrease trend in the number of precipitation days in South China, especially in Guangdong and Hainan, which led to a decrease trend in TC precipitation.

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基金

广东省基础与应用基础研究基金-青年基金项目(2023A1515110518)
广东省气象局科学技术研究项目(GRMC2020Q19)
广东省气象局科学技术研究项目(GRMC2022M35)
广东省气象台科学技术研究项目(202411)

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