• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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• 2001.06a
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• pp.61-64
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• 2001

대관령 인근 고랭지는 표고가 높아 여름철에도 서늘하여 오래 전부터 씨감자와 호냉성원예작물의 주산지로 발전되어 왔다. 이러한 저온기후자원을 이용하여 농업활동이 이루어지는 고랭지는 산지의 특이한 지형조건 때문에 날씨변화가 심하고 이에 따른 작물피해가 잦다. 기상청 자동기상관 측장치(automated weather station : AWS)가 일부 지점에 설치되어 있으나 기온과 바람 강우량만이 관측되고 있어 농업적인 이용에는 한계가 있다.(중략)

• Defense and Technology
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• no.7 s.245
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• pp.38-47
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• 1999

대기의 상태는 지역, 시간, 기상 조건 등에 따라 변하므로 고도를 계산하는데는 북반구 중위도 지방에서 관측된 기상자료 등을 기준으로 제정한 표준대기를 적용한다. 속도를 계산하는데 전압과 정압의 압력차로 정의하는 항공기용 대기속도계 차압표를 사용한다. 계산된 에어 데이터는 비행계기나 cockpit display에 표시되어 조종사에게 정보로 전달됨과 동시에 자동조종 장치, 관성항법 장치, 비행관리 시스템, 항공관리 트랜스폰더 등에 기초 자료로 공급된다

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2007.05a
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• pp.149-156
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• 2007

부산의 대표적 큰 계곡인 성지곡수원지는 남쪽으로 부산의 최대 도심인 서면을 향해 열려 있고, 그 이외의 삼면은 높은 산지로 둘러싸여 있다. 그래서 성지곡-서면-남항 일대는 낮에는 해풍이 곡풍(남풍)의 형태로 불고, 야간에는 산풍이 육풍(북풍)의 형태로 불고 있다. 이렇게 형성된 국지풍 순환의 규모와 특성을 평가하기 위하여, 계곡 입구와 도심인 서면 부근에 자동기상관측장치를 설치하여 특별 관측을 수행하였다. 관측결과 주간에는 서면 부근의 기온이 성지곡 입구보다 낮았고, 야간에는 이와 반대로 나타났으며 그 차이는 대체로 $3^{\circ}C$ 내외였다. 이것은 주로 지표면 가열의 의한 기단변질의 결과로 판단된다. 관측 일에 확인된 도로표면온도는 낮에 약 65도까지 상승하였으며 야간에도 30도 정도의 고온이 유지되었다. 이 연구에서는 현장관측으로 확인된 기단변질과정을 이해하기 위하여 2차원 대류모델을 이용한 수치실험을 수행하였다. 수치실험의 결과 낮에는 지표로부터 약 $150W/m^2$이상의 현열이 보급됨이 확인되었다. 야간에도 $10W/m^2$ 내외의 현열이 대기 중으로 보급되어 성지곡 수원지에서 발원된 냉기류를 가열시키고 있음이 확인되었다.

• Korean Journal of Agricultural and Forest Meteorology
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• v.8 no.1
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• pp.36-44
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• 2006

In this study, we constructed a forest fire danger map in the Yeongdong area of Gangwon-do and Northeastern area of Gyeongsangbuk-do using a forest fire rating model and geographical information system (GIS). We investigated the appropriate positions of the automatic weather station (AWS) and a comprehensive network solution (a system including measurement, communication and data processing) for the establishment of an optimum mountain meteorological observation network system (MMONS). Also, we suggested a possible plan for combining the MMONS with unmanned monitoring camera systems and wireless relay towers operated by local governments and the Korea Forest Service for prevention of forest fire.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.34 no.3
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• pp.325-331
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• 2010

Three-cup anemometers are popular devices for measuring wind speeds in automated weather stations, environmental monitoring systems, and wind turbines. Cup anemometers usually suffer from lack of long-term stability owing to the wear of the bearing systems that support the rotational parts. The bearing systems are susceptible to external pollutants, vibrations, and gusts. Therefore, these anemometers have to be calibrated regularly to maintain the desired characteristics for measuring wind speed. In the present study, a new in-situ calibration system to help reduce cost and save time by calibrating the cup anemometers at the installation site is proposed. A portable in-situ calibrator was fabricated. After the characteristics of this calibrator were verified, it was used to calibrate cup anemometers. Some of the calibration results were compared with the data obtained by wind tunnel testing.

• The Bulletin of The Korean Astronomical Society
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• v.37 no.2
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• pp.215.2-215.2
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• 2012

우주물체 전자광학 감시체계(OWL: Optical Wide-field Patrol)는 전세계에 5개의 50cm급 자동 망원경과 1개의 2m급 망원경을 설치하여 인공위성의 궤도 정보를 얻는 시스템이다. 이 시스템을 운영하게 될 소프트웨어는 크게 두 부분으로 나누어지는데, 해외 원격지에 설치되는 관측소의 50cm급 망원경의 마운트와 검출기, 돔, 기상 측기, 전원 제어 장치를 통합하여 무인으로 관측을 수행하고 그 결과를 본부에 보고하며, 각 시스템을 안전하게 보호하는 기능을 갖는 SOS(Site Operating System)와, 스케줄러에 의하여 각 관측소에 필요한 관측 일정을 작성하여 전달하고 관측소의 운영 현황을 모니터링 하는 NOS(Network Operating System)로 구성된다. OWL OS를 위하여, 시스템을 전반적으로 운영하는 운영 시나리오를 설계하였으며, 이 시나리오에는 기상조건 악화와 장비 오류 등의 경우에 시스템을 보호하고 상황을 즉시 보고하는 비상사태 대처 방안을 포함하였다. 이러한 운영의 모든 단계에서 주기적 또는 필요시 로그 기록이 남도록 하였으며, 이 로그 기록을 바탕으로 사용자가 원할 때에 본부에서 운영상황을 요약하여 보여주는 각종 통계 자료를 작성하여 확인할 수 있도록 하였다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.33 no.4
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• pp.317-324
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• 2015

GNSS was firstly proposed for application in weather forecasting in the mid-1980s. It has continued to demonstrate the practical uses in GNSS meteorology, and other relevant researches are currently being conducted. Precipitable Water Vapor (PWV), calculated based on the GNSS signal delays due to the troposphere of the Earth, represents the amount of the water vapor in the atmosphere, and it is therefore widely used in the analysis of various weather phenomena such as monitoring of weather conditions and climate change detection. In this study we calculated the PWV through the meteorological information from an Automatic Weather Station (AWS) as well as GNSS data processing of a Continuously Operating Reference Station (CORS) in order to analyze the heavy snowfall of the Ulsan area in early 2014. Song’s model was adopted for the weighted mean temperature model (T_m), which is the most important parameter in the calculation of PWV. The study period is a total of 56 days (February 2013 and 2014). The average PWV of February 2014 was determined to be 11.29 mm, which is 11.34% lower than that of the heavy snowfall period. The average PWV of February 2013 was determined to be 10.34 mm, which is 8.41% lower than that of not the heavy snowfall period. In addition, certain meteorological factors obtained from AWS were compared as well, resulting in a very low correlation of 0.29 with the saturated vapor pressure calculated using the empirical formula of Magnus. The behavioral pattern of PWV has a tendency to change depending on the precipitation type, specifically, snow or rain. It was identified that the PWV showed a sudden increase and a subsequent rapid drop about 6.5 hours before precipitation. It can be concluded that the pattern analysis of GNSS PWV is an effective method to analyze the precursor phenomenon of precipitation.

• 한국태양에너지학회:학술대회논문집
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• 2009.11a
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• pp.26-31
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• 2009

This study was analysed influence of urban higher temperature in Busan about time series analysis of AWS data. The results are as follows. (1) The temperature of Busan show min $13.2^{\circ}C$ ~max $15.8^{\circ}C$ by 50 years, it is on the rise. (2) The seasonal adjustment series, summer appeared min $17.5^{\circ}C$ ~max $28.9^{\circ}C$ with primitive series similarly. The winter was min $-11.4^{\circ}C$ ~max $17.9^{\circ}C$, the minimum temperature was more lowly than primitive series and maximum temperature was more higher than primitive series. The results, seasonal adjustment series is guessed with influence difference urban structural element beside seasonal factor. (3) Regional analytical result, January appeared with range of min 28% ~max 196% of the seasonal factor and August appeared min 90% ~ max 106%. One of the case which is of 100% or more of the seasonal factor January 12nd~17th, August appears at the 15~17th.

• Journal of the Korean Data and Information Science Society
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• v.27 no.3
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• pp.577-586
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• 2016

Hazardous air pollution caused by heavy metals in the air is at a serious level. Although manganese(Mn), one of the heavy metals, is a non-carcinogenic substance, it has a harmful influence on the human body. It is partially measured because automatic monitoring technologies have not yet be fully established. We introduced a statistical model for the daily concentration of manganese. Incorporating a linkage between Mn and meteorology, the proposed model is formulated in way to identify meteorological effects and to allow for seasonal trends, enabling not only accurate measurement of manganese concentration, but also information about the evaluation on a Hazard Quotient (non-cancer risk).

• Journal of Bio-Environment Control
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• v.29 no.4
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• pp.448-455
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• 2020

This study was carried out to investigate reduction of the frost damage using the mesh net used for the purpose of non-bagged cultivation. A device measuring the weight of frost was developed and installed in both the control and the experimental, and the effect of frost reduction was evaluated with their weights. As a result, weight of frost in the control was reduced from 37% to 59% with mesh net on the day the frost was observed. In addition, the device for automatically observing the amount of frost was developed and the height of the windbreak of the frost measuring device was determined to be 30 cm through wind tunnel experiment. The results of this study are expected to reduce frost damage during the flowering season of fruit trees by installing mesh net and it is expected to be used as basic data for agricultural use of mesh net.