Effects of horizontal resolution and updated surface data on simulated low-level winds for the aviation safety over Incheon International Airport

IF 4.5 2区地球科学 Q1 METEOROLOGY & ATMOSPHERIC SCIENCES

Atmospheric Research Pub Date : 2024-11-01 DOI:10.1016/j.atmosres.2024.107753

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引用次数: 0

Abstract

This study aimed to alleviate the overestimation of low-level wind speeds at Incheon International Airport in South Korea by employing large eddy simulation (LES) modeling and high-resolution surface data. Simulation and observation data from two days on which potentially hazardous weather conditions near the airport were observed were selected for analysis: 12 August 2020, when strong winds were recorded, and 13 July 2020, when precipitation occurred. To investigate the impact of the horizontal resolution of the model and updated land surface data on low-level wind simulations, this study compared the simulation results of 1 km experiments with both 30-s United States Geological Survey topography and land use data and high-resolution 3-s surface data, including Shuttle Radar Topography Mission digital elevation model topography data and land use data generated by the Korean Ministry of Environment, and 100 m LES experiments with the high-resolution surface data. The observed 10-m wind speed and sonde data near the airport were used to evaluate the model results. Utilizing the updated high-resolution surface data in the 1 km model grid-spacing simulation led to a lower root mean square error and wind speed bias compared to the use of low-resolution surface data. The 100 m experiment incorporating LES modeling with the updated high-resolution surface data further improved the low-level wind simulation results compared to the 1 km experiment using the same high-resolution surface data. In addition to providing more accurate simulations of mean winds, turbulence variations over the airport and the nearby region are better resolved by using high-resolution LES modeling and combined with updated surface data, which are critical for ensuring aviation safety near the airport.

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水平分辨率和最新地表数据对仁川国际机场航空安全模拟低空风的影响

本研究旨在通过采用大涡度模拟（LES）建模和高分辨率地表数据，减少对韩国仁川国际机场低空风速的高估。研究选取了在机场附近观测到潜在危险天气条件的两天的模拟和观测数据进行分析：2020 年 8 月 12 日和 2020 年 7 月 13 日，前者出现强风，后者出现降水。为了研究模型水平分辨率和更新的地表数据对低空风模拟的影响，本研究比较了使用美国地质调查局 30 秒地形和土地利用数据以及高分辨率 3 秒地表数据（包括韩国环境部生成的航天飞机雷达地形图任务数字高程模型地形数据和土地利用数据）进行的 1 公里实验模拟结果，以及使用高分辨率地表数据进行的 100 米 LES 实验模拟结果。观测到的 10 米风速和机场附近的探空仪数据用于评估模型结果。与使用低分辨率地表数据相比，在 1 千米模型网格间距模拟中使用更新的高分辨率地表数据可降低均方根误差和风速偏差。与使用相同高分辨率地表数据的 1 公里试验相比，将 LES 建模与更新的高分辨率地表数据相结合的 100 米试验进一步改进了低空风模拟结果。通过使用高分辨率 LES 建模并结合更新的地表数据，除了能更准确地模拟平均风外，还能更好地解析机场及附近区域的湍流变化，这对于确保机场附近的航空安全至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Atmospheric Research 地学-气象与大气科学

CiteScore

9.40

自引率

10.90%

发文量

460

审稿时长

47 days

期刊介绍： The journal publishes scientific papers (research papers, review articles, letters and notes) dealing with the part of the atmosphere where meteorological events occur. Attention is given to all processes extending from the earth surface to the tropopause, but special emphasis continues to be devoted to the physics of clouds, mesoscale meteorology and air pollution, i.e. atmospheric aerosols; microphysical processes; cloud dynamics and thermodynamics; numerical simulation, climatology, climate change and weather modification.