- Volume 24 Issue 5
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A Study of Convective Band with Heavy Rainfall Occurred in Honam Region
- Moon, Tae-Su (Weather Analyst, The Third Weather Squadron) ;
- Ryu, Chan-Su (Climate chang & Enviroment Research Institue, Chosu University)
- Received : 2014.12.14
- Accepted : 2015.03.20
- Published : 2015.05.30
On the study of the characteristics and life cycle of mesoscale convective band in type of airmass that occurred in the Honam area from June to September for only 4 years in the period of 2009~2012, 10 examples based on the amount of rainfall with AWS 24 hours/60 minutes rainfalls, Mt. Osung radar 1.5 km CAPPI/X-SECT images and KLAPS data for convective band with heavy rainfall event were selected. There were analyzed and classified by using the convective band with heavy rainfall occurred along the convergence line of sea wind in the form of individual multi-cellular cell and moving direction of convective band appeared in a variety of patterns; toward southwestern (2 cases), northeastern (4 cases), congesting (2 cases), and changing its moving direction (2 cases). The case study dated of the 17th Aug. 2012 was chosen and implemented by sequentially different evolution of its shape along the convergence line of sea wind cell and moving direction of convective band as equivalent potential temperatures at the lower layer have increased to the upper layer 500 hPa, that the individual cells were developed vertically and horizontally through their merger, but owing to divergence caused by weakened rainfall and descending air current, the growth of new cell was inhibited resulting in dissipation of convective cells.
- Bluestein, H. B., M. H. Jain, 1985, Formation of Mesoscale lines of Precipitation : Severe Squall lines in Oklahoma during the spring, J. Atmos. Sci., 42, 1171-1732.
- Browning, K. A., J. C. Fankhauser, J. P. Chalon, P. J. Eccles, R. C. Strauch, F. H. Merrem, D. J. Musil, E. L. May, W. R. Sand, 1976, Structure of an evolving hail storm. Part V : Synthesis and implications for hail growth and hail suppression., Mon. Wea. Rev, 104, 603-610. https://doi.org/10.1175/1520-0493(1976)104<0603:SOAEHP>2.0.CO;2
- Bryan, G. H, J. M. Fritsch, 2000, Moist absolute instability: The sixth static stability state, ... Bull. Am. Metorol. Soc, 81, 1207-1230. https://doi.org/10.1175/1520-0477(2000)081<1287:MAITSS>2.3.CO;2
- Choi, J. Y., K. C. Shin, C. S. Ryu, 2011, A Study on the Heavy Rainfall Cases Associated with Low Level Jet Inflow along the Changma Front, J. Chosun National Science, 4, 44-57.
- Chung, H. S., Chung, Y. A., Kim, C. M., Ryu, C. S., 2013, The Characteristics of Heavy Rainfall over the Korean Peninsular, J. Korean Environmental Sci. Soc., 22, 97-101.
- Jeong, G. Y., Ryu, C. S., 2008, The Synoptic Characteristics of Heavy Rain in South Korea, J. of the Chosun National Science, 2, 89-114.
- Lee, H. H., Choi, Y. J., 1993, A Case Study on the Rain by Merged Cloud System of GMS. J. Korean Meteor, 29, 5-25.
- Lee, T. Y., and Kim, Y. H., 2007, Heavy Precipitation Systems Over the Korean Peninsula and their Classification. J. Korean Meteor. Soc., 43, 367-396.
- Parker, M. D., and R. H. Johnson, 2000, Organization Modes of Midlatitude Mesoscale Convective Systems. Mon. Wea. Rev., 128, 3413-3436. https://doi.org/10.1175/1520-0493(2001)129<3413:OMOMMC>2.0.CO;2
- Sun, J., and Lee, T. Y., 2002, A numerical study of an intense quasi-stationary convection band over the Korean Peninsula. J. Metor. Soc. Japan, 80, 1221-1245. https://doi.org/10.2151/jmsj.80.1221
- Weisman, M. L., J. B. Klemp, 1986, Characteristics of isolated convective storms. Mesoscale Meteorology and Forecasting, P. S. Ray, Ed., Amer. Meteor. Soc., 341-358.
- Westcott, N. E., P. C. Kennedy, 1989, Cell development and merger in an Illinois, J. Atmos. sci., 46, 117-131. https://doi.org/10.1175/1520-0469(1989)046<0117:CDAMIA>2.0.CO;2
- Yang, H. Y., Ryu, C. S., 2002, The Characteristics of Heavy Rainfall in South Korea, Atmosphere. Korean Meteorological Soc. 12, 534-537.