| 湛江地区汛期降水稳定同位素的变化与水汽来源的关系 |
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| 作者姓名： | 甘秋莹 范伶俐 陈汉森 李丽芳 李俊宇 郑侦明 |
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| 作者单位： | 广东海洋大学海洋与气象学院 |
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| 基金项目： | 国家重点研发计划“重大自然灾害监测预警与防范”重点专项(2018YFC1506002);广东海洋大学大学生省级创新训练型项目(CXXL2019044)。 |
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| 摘 要： | 以湛江降水为研究对象,利用收集的2019年汛期68个降水样品及同期气象资料,采用同位素示踪技术,结合HYSPLIT(Hybrid Single-Particle Lagrangian Integrated Trajectory)模式溯源,分析了湛江地区汛期降水稳定同位素的变化与水汽源地的关系,并对5个代表性的降水个例进...
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| 关 键 词： | 降水 稳定同位素 水汽来源 HYSPLIT轨迹模式 湛江 |
| 收稿时间： | 2020/4/4 0:00:00 |
Relationship between variation of stable isotopes in precipitation and water vapor source of Zhanjiang in flood season |
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| Authors: | GAN Qiuying FAN Lingli CHEN Hansen LI Lifang LI Junyu ZHENG Zhenming |
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| Institution: | (School of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China) |
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| Abstract: | The precipitation of Zhanjiang is analyzed through 68 precipitation samples and observational weather data collected in the flood season of 2019.The isotope tracing method and the Hybrid Single-Particle Lagrangian Integrated Trajectory(HYSPLIT)model are used to analyze the relationship between the variations of stable isotopes in precipitation and the water vapor source of Zhanjiang in the flood season.Besides,5 representative precipitation cases are analyzed to find out the water vapor source of Zhanjiang in the flood season.The results are shown below.1)The local meteoric water line isδD=8.02318O-0.7037(R2=0.954,n=68)during the flood season in Zhanjiang;the monsoon in the early flood season brings water vapor from the western Pacific and the content of18O is abundant;the rainfall in the latter flood season,which is mainly caused by local atmospheric circulation,is affected to some extent by second evaporation under the cloud,and the content ofδD and18O is low.2)Before the onset of the southwest monsoon in the early flood season,the southeast airflow around the subtropical high brings the water vapor of the western Pacific to Zhanjiang;when the southwest monsoon erupts,the South China Sea and the Bay of Bengal become its water vapor sources;for the precipitation caused by tropical systems in the latter flood season,the South China Sea and the Bay of Bengal are the main water vapor sources of Zhanjiang;while for the precipitation caused by non-tropical systems,the Bay of Bengal is the main water vapor source. |
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| Keywords: | precipitation stable isotope water vapor source HYSPLIT model Zhanjiang |
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