The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Evaluation of Wind Speed Depending on Pulse Resolution of UHF Wind Profiler Radar

UHF 윈드프로파일러 레이더의 펄스 해상도에 따른 풍속의 정확성 평가

  • 이경훈 (부경대학교 지구환경시스템과학부) ;
  • 권병혁 (부경대학교 환경대기과학과) ;
  • 윤홍주 (부경대학교 공간정보시스템공학과)
  • Received : 2021.04.19
  • Accepted : 2021.06.17
  • Published : 2021.06.30
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Abstract

The wind profilers operated by the Korea Meteorological Administration observe in a low mode for intensive observation of the low levels and a high mode for intensive observation of the high levels. The LAP-3000 wind profiler installed in Bukgangneung and Changwon is characterized by the same sampling frequency of the low mode and the high mode, allowing to compare winds observed in both modes at the same altitude. As a result of analyzing the wind speed of the two points for one year in 2020, the correlation between the two modes was up to 0.2 lower than the correlation with radiosonde. The T-test for the wind speed of the two modes showed a particularly significant difference in October, where the temperature and specific humidity fluctuate frequently. The difference in the development of the atmospheric boundary layer affects the accuracy of the wind speed depending on the observation mode.

기상청에서 운용 중인 윈드프로파일러는 저층을 집중 관측하는 저층 모드와 고층을 집중 관측하는 고층 모드로 나누어 관측한다. 북강릉과 창원에 설치된 LAP-3000 윈드프로파일러는 저층 모드와 고층 모드의 샘플링 주파수를 동일하게 설정한 것이 특징으로, 동일한 고도에서 두 모드로 관측한 바람을 비교해볼 수 있다. 두 지점의 2020년 1년 동안 풍속을 분석한 결과, 두 모드의 상관성이 라디오존데와의 상관성보다 최대 0.2 낮았다. 두 모드의 풍속에 대한 T-test 수행 결과는 온위, 비습이 급변하는 구간 자주 나타나는 10월에 특히 유의미한 차이를 보였다. 대기경계층의 발달 차이는 관측 모드에 따라 풍속의 정확도에 영향을 미친다.

Keywords

Acknowledgement

이 논문은 부경대학교 자율창의학술연구비(2021년)에 의하여 연구되었음.

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