국내 고층 기상 측정 데이터 기반 계절 및 지역별 덕트 경향성 분석 (Analysis of Seasonal and Regional Duct Tendencies Based on Domestic High-Altitude Meteorological Measurement Data)

서지정보

· 발행기관 : 한국전자파학회
· 수록지 정보 : 한국전자파학회 논문지 / 35권 / 12호 / 1023 ~ 1031페이지
· 저자명 : 임창현, 장도영, 김남문, 추호성

초록

본 논문에서는국내고층기상측정데이터를기반으로계절및지역별덕트의경향성을분석한다. 기상데이터는국내고층기상대7곳(백령도, 흑산도, 제주도, 오산, 광주, 북강릉, 포항)에서 과거 9년(2015∼2023)간 수집한 데이터를활용한다. 모든날짜에대한대기굴절률을수정대기굴절률(M-unit)로변환하고, M-unit의변화율(∇M)을통해대기상태(정상, 아굴절, 초굴절, 덕트)를분류한다. 그중에서, 강한전파굴절로인해레이다시스템에치명적인오탐을발생시킬수있는덕트현상의발생빈도를지역, 시간, 날짜에따라중점적으로관찰하였다. 분석결과에따르면, 지역을기준으로분석했을때해안지역에서모든계절에걸쳐덕트발생확률이더높았으며, 계절을기준으로분석했을때내륙과해안지역모두가을에빈번하게발생하였다. 또한, 시간별로살펴보면, 오전보다는오후에덕트발생확률이높게나타났다.
이러한결과를기반으로레이다시스템운용시탐지오차를최소화하기위해지역및날짜별∇M 평균값및대표보정각도를 제안한다.

영어초록

In this study, we analyzed the seasonal and regional duct tendencies using domestic high-altitude atmospheric measurement data.
The meteorological data was collected from seven high-altitude meteorological observatories in South Korea (Baengnyeong Island, Heuksan Island, Jeju Island, Osan, Gwangju, Bukgangneung, and Pohang) over the past nine years (2015∼2023). The atmospheric re fractive index for all dates is converted into the modified atmospheric refractive index (M-unit), and the atmospheric conditions (normal, sub, super, duct) are classified using the M-unit gradient (∇M). Among these, the occurrence of ducts, which can cause critical detection errors in radar systems due to strong refraction, is closely observed by region, time, and date. According to the results, when analyzed by region, the probability of duct occurrence was higher in coastal areas across all seasons, and when analyzed by season, it occurred frequently in fall in both inland and coastal areas. In addition, the probability of duct formation was higher in the afternoon than in the morning. Based on these results, we propose the average ∇M and representative correction angles by region and date to minimize detection errors in radar system operations.

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