- Volume 25 Issue 3
DOI QR Code
Micro-meteorological Characteristics during the Steam Fog over the Gumi Reservoir of Nakdong River
낙동강 구미 보의 증기 안개 발생 시의 미기상학적 특성
- Received : 2015.11.09
- Accepted : 2016.03.08
- Published : 2016.03.31
We analyzed the micro-meteorological characteristics during typical steam fog over the Gumi Reservoir of Nakdong river with the field observation data for recent 2 year(1 April 2013~31 March 2015) collected by the national institute of meteorological research, KMA. Steam fog occur when the cold drainage flows over the warm water surface. As the sensible and latent heat from water are provided to the air, the instability of lower atmosphere is increased. The resultant vertical mixing of warm, moist air near water surface and cold air aloft causes the formation of status cloud. The convection strengthened by radiative cooling of the upper part of the stratus causes the fog to propagate downward. Also, the temperature at the lowest atmosphere is increased rapidly and the inversion near surface disappear by these processes when the fog forms. The increase of wind speed is observed because the downward transportation of momentum is caused by vertical mixing.
Steam fog;Unstable atmosphere;Gumi reservoir;Vertical mixing process
- Aguado, E., Burt, J. E., 2001, Weather and Climate, Prentice Hall Press, 90-117.
- Asakura, M., Nita, T., Ninomiya, K., Tachihei, R., Sekine, R., 1992, Meteorological Technology - Investigation of Meteorology -, Asakura Press, 207-211.
- Bang, C. H., 2007, Study on airport visibility and numerical simulation of fog with WRF, Master thesis of Yonsei university, 25-36.
- Choi, H., 2001, Numerical prediction on fog formation affected by the Yellow Sea and mountain, Journal of the Korean Meteorological Society, 37, 261-282.
- Choi, J. H., Lee, S. H., 2003, Study on the fog forecast methods with data minning technique, Data Base Research, 19, 89-100.
- Harami, K., 1969, On the steam fog in the Japan Sea, Umi-to-Sora, 44, 9-15.
- Kim, H. D., 1994, Study on mechanisms to maintain MCC and air mass modification process in Yamase event, Ph. D., Tokyo university, Tokyo, Japan, 68-110.
- Kim, H. D., 1997, Numerical experiment on the sea-fog formation at the East Coast of Korean Peninsula in early summer, Journal of the Korean Meteorological Society, 33, 337-348.
- Kim, H. D., 2003, Study on the long-term change of urban climate in Daegu, Journal of the Environ -mental Sciences, 12, 697-704. https://doi.org/10.5322/JES.2003.12.7.697
- Kim, M. O., 1998, Characteristics on the marine distribution near Korean Peninsula, Master thesis of Chonnam university, 20-36.
- Kodama, Y., 1995, Physical processes of low clouds in Yamase event, Meteorological Research Note published by Meteorological Society of Japan, 183, 49-66.
- Kondo, J., 1994, Hydro-meteorology, Asakura Press, 140-161.
- Kondo, J., 1999, Boundary layer meteorology: (III)Heat budget and meteorology, Tenki, 46, 769-777.
- Korea Meteorological Administration, 2012, Observation base study on the mechanism of fog occurrence, Seoul, Korea, 51-64.
- Lee, K. M., 2010, Study on the characteristics of fog occurrence and its prediction methods in Chungcheong region, Master thesis of Gongju university, 30-35.
- Lee, S. H., Kim, H. D., 2010, Modification of nocturnal drainage flow due to urban surface heat flux, Asia Pacific Journal of Atmospheric Science, 46, 453-465. https://doi.org/10.1007/s13143-010-0026-z
- Okawa, T., 2003, Fogs of Okhotsk Sea and Yamase event in Hokaido, Meteorological Research Note published by Meteorological Society of Japan, 214, 47-73.
- Park, J. S., Lim, Y. K., Kim, K. R., Cho, C. B., Jang, J. Y., Kang, M. S., Kim, B. J., 2015, Atmospheric characteristics of fog incidents at the Nakdong river: Case study in Gangjeong-Goryung weir, Journal of Environmental Science International, 24, 657-670. https://doi.org/10.5322/JESI.2015.24.5.657
- Pilie, R. J., Mack, E. J., Kocmond, W. C., Rogers, C. W., Eadie, W.J., 1975, The life cycle of valley fog. Part I: Micro-meteorological characteristics, Journal of Applied Meteorology, 14, 347-363. https://doi.org/10.1175/1520-0450(1975)014<0347:TLCOVF>2.0.CO;2
- Sawai, T., 1993, On the condition and predictability of fog formation, Technical note on the forecast, Japan Meteorological Agency, Tokyo, Japan, 13-24.
- Yamamoto, G., Kondo, J., 1968, Evaporation from Lake Nojiri, Journal of Meteorological Society of Japan, 46, 166-177. https://doi.org/10.2151/jmsj1965.46.3_166
Grant : 응용기상기술개발연구
Supported by : 국립기상연구소