2013 年 8 月 9 日日本东北北部地区暴雨案例的数值模拟

IF 1.7 4区地球科学 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES

Sola Pub Date : 2024-05-17 DOI:10.2151/sola.20a-001

Keisuke Ono, Junshi Ito

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引用次数: 0

摘要

2013 年 8 月 9 日，两个准静止准线性对流系统在日本东北地区北部造成了局部强降雨。我们利用数值模拟研究了该地区的这一罕见事件，并考察了气流结构和机制。模拟降水量和地点与观测值非常吻合。环境有利于对流系统，基于对流单元的前向轨迹和复合材料的分析阐明了气流结构。极端降水区域上游的山脉引发了对流系统的反向形成，而在对流系统下方汇聚的潮湿低空气流则在没有明显山脉的下游起到了维持对流系统的作用。

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Numerical Simulation of a Case of Heavy Rainfall in the Northern Tohoku Region of Japan on 9 August 2013

Two quasi-stationary quasi-linear convective systems caused local heavy rainfall on 9 August 2013 in the northern Tohoku region of Japan. We investigate this rare event in the region using a numerical simulation and examine airflow structures and mechanisms. The amount and locations of the simulated precipitation agree well with the observed values. The environment is favorable to convective systems, and analyses based on forward trajectories and composites of convective cells clarify airflow structures. Mountains upstream of the extreme precipitation areas trigger the back-building convective systems, whereas humid low-level inflows converging below the convective systems play a role in maintaining the convective systems downstream where there are no significant mountains.

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来源期刊

Sola 地学-气象与大气科学

CiteScore

3.50

自引率

21.10%

发文量

审稿时长

>12 weeks

期刊介绍： SOLA (Scientific Online Letters on the Atmosphere) is a peer-reviewed, Open Access, online-only journal. It publishes scientific discoveries and advances in understanding in meteorology, climatology, the atmospheric sciences and related interdisciplinary areas. SOLA focuses on presenting new and scientifically rigorous observations, experiments, data analyses, numerical modeling, data assimilation, and technical developments as quickly as possible. It achieves this via rapid peer review and publication of research letters, published as Regular Articles. Published and supported by the Meteorological Society of Japan, the journal follows strong research and publication ethics principles. Most manuscripts receive a first decision within one month and a decision upon resubmission within a further month. Accepted articles are then quickly published on the journal’s website, where they are easily accessible to our broad audience.