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Characteristics of Atmospheric Circulation in Sokcho Coast
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 Title & Authors
Characteristics of Atmospheric Circulation in Sokcho Coast
Choi Hyo;
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Using three-dimensional non-hydrostatical numerical model with one way double nesting technique, atmo­spheric circulation in the mountainous coastal region in summer was investigated from August 13 through 15, 1995. During the day, synoptic westerly wind blows over Mt. Mishrung in the west of a coastal city, Sokcho toward the East Sea, while simultaneously, easterly upslope wind combined with both valley wind from plain (coast) toward mountain and sea-breeze from sea toward inland coast blows toward the top of the mountain. Two different directional wind systems confront each other in the mid of eastern slope of the mountain and the upslope wind goes up to the height over 2 km, becoming an easterly return flow in the upper level over the sea and making sea-breeze front with two kinds of sea-breeze circulations of a small one in the coast and a large one in the open sea. Convective boundary layer is developed with a thickness of about 1km over the ground in the upwind side of the mountain in the west and a thickness of thermal internal boundary layer from the coast along the eastern slope of the mountain is only confined to less than 200 m. On the other hand, after sunset, no prohibition of upslope wind generated during the day and downward wind combined with mountain wind from mountain towardplain and land-breeze from land toward under nocturnal radiative cooling of the ground surfaces should intensify westerly downslope wind, resulting in the formation of wind storm. As the wind storm moving down along the eastern slop causes the development of internal gravity waves with hydraulic jump motion in the coast, bounding up toward the upper level of the coastal sea, atmospheric circulation with both onshore and offshore winds like sea-breeze circulation forms in the coastal sea within 70 km until midnight and after that, westerly wind prevails in the coast and open seas.
Sea-breeze circulation;Valley wind;Convective boundary laye;Thermal internal boundary layer;Land-breeze;Mountain wind;Wind storm;Internal gravity waves;Hydraulic jump motion;Offshore wind;
 Cited by
Choi, H., J. Seo and J. Nam, 2002, Evolution of wind storm over coastal complex terrain, J. Environ. Sci., 11, 865-880 crossref(new window)

Choi, H., Y. Zhang and S. Takahashi, 2004, Recycling of suspended particulates by the interaction of sea-land breeze circulation and complex coastal terrain, Meteor. and Atmos. Phys., 87, 109-120

Choi, H., 2004, Persistent high concentration of ozone during windstorm conditions in southern Korea, Meteor. and Atmos. Phys., 87, 93-107

Raynor, G. S., S. SethuRaman and R. M. Brown, 1979, Formation and characteristics of coastal internal boundary layer during onshore flows, Boundary Layer Meteor., 16, 4587-514

Pielke, R. A, 1984, Mesoscale meteorological modeling, Academic Press, 612pp

Zangl, G., 2002, Stratified flow over a mountain with a gap, Linear theory and numerical simulations, Quart. J. Roy. Met. Soc., 128, 927-949 crossref(new window)

Palmer, T. N., G. J. Smith and R Swinbank, 1986, Alleviation of a systematic westerly bias in general circulation and NWP models through and orographic gravity wave drag parameterization, Q. J. R Meteor. Soc., 112, 1001-1039 crossref(new window)

Holton, J. R, 1992, Introduction to dynamic meteorology, Academic Press, 1-510pp

Bluestein, H. B., 1993, Synoptic-dynamic mete- orology in micllatitudes, Oxford Univ., 594pp

Arya, S. P. S., 1988, Introduction to micrometeorology, Academic Press, 1-307pp

Segal, M., C. H. Yu, R. W. Arritt and R. A Pielke, 1988, On the impact of valley fridge thermally induced circulations on regional pollutant transport, Atmos. Environ., 22, 471-486 crossref(new window)

Whiteman, C. D, 1990, Observations of thermally developed wind system in mountainous terrain, Atmospheric Processes over complex terrain, Meteor. Monogr., No. 40, Amer. Meteor. Soc., 5-42pp

Choi, H. and Y. H. Zhnag, 2005, Monthly variation of sea-air temperature differences in the Korean coast, J. Ocean., 61, 2, JO#818, in printed

Takahashi, S., 1997, Manual of LAS model reviced by Dr. J. Sato, 50pp

NFRI, 1995, SST Satellite pictures of GMS taken by National Fisheries Research & Development Institute

Klemp, J. B. and D. R. Durran, 1983, An upper condition permitting internal gravity wave radiation in numerical mesoscale models, Mon. Wea. Rev., 111, 430-440 crossref(new window)

Orlanski, I. A, 1976, Simple boundary condi- tion for unbounded hyperbolic flows, J. Comp. Phys., 21, 251-269 crossref(new window)

Yamada, T., 1983, Simulation of nocturnal drainage flows by a q2-1 turbulence closure model, J. Atmos. Sci., 40, 91-106 crossref(new window)

Yamada, T. and G. L. Mellor, 1983, A numerical simulation of the BOMEX data using a turbulence closure model coupled with ensemble cloud relations, Q. J. R. Meteor. Soc., 105, 95-944

Katayama, A, 1972, A simplified scheme for computing radiative transfer in the troposphere, Technical report No.6, Dept. of Meteorol., UCLA, 77pp

Businger, J. A, 1973, Turbulence transfer in the atmospheric surface layer, In Workshop on Micrometeorology(D. A Haugen, ed.), Amer. Meteor. Soc., 67-100pp

Monin, A.S., 1970, The atmospheric boundary layer, Annual Review of Fluid Mechanics, 2, 225-250 crossref(new window)

Deardoff, J. W., 1978, Efficient prediction of ground surface temperature and moisture with inclusion of a layer of vegetation, Geophys. Res., 38, 659-661