기상지진기술개발사업;한반도 기상조절 기술개발 National Research and Development on the Meteorology and Earthquake;Technical Developments of Weather Modification in Korea Peninsula원문보기
$\bullet$ 구름미세물리 관측과 기상조절 실험을 위하여 전방산란스펙트로메타(FSSP), 마이크로레디오미터(MWR), 강수레이더(MRR)와 3D AWS 장비가 통합적으로 구성된 통합구름물리관측시스템(CPOS)을 대관령 기상대에 구축하였으며 관측 결과 D/B를 구축하고 실시간 표출함(http://weamod.metri.re.kr). 각 장비들에 대한 신뢰도 (MRR: 30분누적강수 $R^2=0.84$, MWR: 1분 가강수량 $R^2=0.83$, FSSP: 입자크기분포 <
$\bullet$ 구름미세물리 관측과 기상조절 실험을 위하여 전방산란스펙트로메타(FSSP), 마이크로레디오미터(MWR), 강수레이더(MRR)와 3D AWS 장비가 통합적으로 구성된 통합구름물리관측시스템(CPOS)을 대관령 기상대에 구축하였으며 관측 결과 D/B를 구축하고 실시간 표출함(http://weamod.metri.re.kr). 각 장비들에 대한 신뢰도 (MRR: 30분누적강수 $R^2=0.84$, MWR: 1분 가강수량 $R^2=0.83$, FSSP: 입자크기분포 $R^2=0.64$)를 확보함. $\bullet$ 대관령 지역에서 인공증설실험을 13번 수행하여 6번에서 1.8배 증설을 확인함(2006년 1월 18일 ${\sim}$ 2월 16일 한달간). 이 실험을 통하여 영서지역에 효과적인 증설을 할 수 있는 개념모형이 완성되었으며 이 모형으로 태백산맥을 중심으로 중설실험시 성공률을 증대할 수 있는 기초를 확립함. $\bullet$ 2번의 안개소산 실험에서 평균 13분간 약 1.4배의 시정 개선 효과를 보았으며 증우도 검출됨. 이 실험결과는 안개조절이론과 잘 부합하는 결과임을 확인함. 향후 공항 등에 안개소산 가능성을 확인함. $\bullet$ 기상조절 실험용 연소탄 점화장치, 연소탄 원격 점화장치, 그리고 구름 및 안개 입자의 분포 관측 시스템 개발 및 특허출원을(3건)하였고, 입자 (특히 빙정) 분포 관측시스템인 PIC(Particle Image Capture)를 개발함. $\bullet$ 최적증우(설) 조건에 대한 개념모형 개발 등 이론적 이해 기반 확보. 3D Clark-Hall 모형이 개발되었으며 이를 이용한 시딩 모의 연구가 수행됨 또한 미세구름조절모형이 자체 개발되었으며 기상조절 실험전후의 구름미세물리과정의 이해에 대한 기반이 됨. $\bullet$ 국내외 논문 및 연구실적 발표: 논문 12편(SCI 3편, 국내 9편), 국내외 발표 31회, 국제 기상조절워크숍 2회, 국내 워크숍 2회 개최함.
Abstract▼
During the third year of this project, we concentrated on basic research of cloud physics for practical use of precipitation enhancement and fog dissipation, and numerical model applications for cloud seeding experiments. To observe and analyze the change of the cloud and fog characteristics befo
During the third year of this project, we concentrated on basic research of cloud physics for practical use of precipitation enhancement and fog dissipation, and numerical model applications for cloud seeding experiments. To observe and analyze the change of the cloud and fog characteristics before and after the seeding experiment, we have established the Cloud Physics Observation System (http://weamod.metri.re.kr) by implementing the cloud observation instruments: FSSP (Forward Scattering Spectrometer Probe), MWR (Microwave Radiometer) and MRR (Micro Rain Radar) at Daegwallyeong Meteorological Station. FSSP gives the information about the size distribution of water droplets near land surface. The MWR observation show us the climatological variation of TPW (Total Precipitable Water). falling velocity of rain, rain rate, vertical liquid water content of rain are observed by MRR. We have investigated the possibility of weather modification by the cloud and fog modification experiments. Using the air force airplane, the seeding experiments of AgI and dry ice are performed. While the dry ice seeding experiment does not show the enhancement of rainfall, the AgI airplane seeding shows the slight enhancement. During the foggy day in June 2005, we have also performed two ground hygroscopic material seeding experiments to dissipate the fog and to enhance the rainfall, and the visibility is improved 1.38 times during about 13 min. and the rainfall is detected when the change of the drop size distribution is large. The 30-min. ground AgI seeding experiments are conducted 13 times to enhance the snow. The 1.8 times enhancement of snow is detected 6 times for the 13 experiments at Deagwallyeong site. We have found that the snow enhancement at Deagwallyeong happens when 1) the fog is detected at Gangnung site 2) near the cold font, and 3) the amount of AgI is small or propane is only used. We have developed the frame of the cloud moidification model to understand the variance of cloud/fog droplets before and after the seeding experiments. The conceptual model including the collision-coalescence process has been tested. To improve the verification for the weather modification experiment, the new instruments (e.g., PIC (Picture Image Capture) the instrument developed to observe the snow crystal structures) are developed. Running the three-dimension Takahashi and Kawano(1998) cloud model, cloud seeding experiments were simulated on both continental clouds and maritime clouds. In the case of maritime clouds simulation, artificial input of ice crystals didn't give increasing rainfalls. Even, sometimes results that reduce rainfalls appeared on ground. In the case of continental clouds simulation, it couldn't rain into the ground in natural conditions because of small the limit of size in the small raindrops. But inputting ice particles into the cloud upper level updraft areas resulted in precipitation on the ground by encouraging icing growth process of small water drops. Mesoscale model research occurred smoothly. It is expected that describing a smaller scale phenomena, is possible using the mesoscale model to predict the changes of meteorological conditions near the cloud seeding experiment areas and time. Successful performance of this project will bring on the improvement of understanding theoretical backgrounds that cloud condensation nuclei which affects rainfall amount differences by cloud types, understanding microphysical cloud characteristics. by cloud observation, and getting to the bottom of aerosols occurrence and development mechanism over the Korean peninsula.
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