시베리아 고기압 영향으로 영동지역 부근에서 발달한 구름대의 위치와 Froude 수와의 관계
The Relationship of Froude Number and Developed Cloud Band Locations Near Yeongdong Region Under the Siberian High Pressure System
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Precipitation and no-precipitation events under the influence of the Siberian high pressure system in Yeondong region, were analysed and classified as four types [obvious precipitation event (OP) type, obvious no-precipitation event (ON) type, ambiguous precipitation event (AP) type and ambiguous no-precipitation event (AN) type], according to the easiness in determining whether to have precipitation or not in Yeongdong region, to help in improving the forecast skill. Concerning the synoptic pressure pattern, for OP type, the ridge of Siberian high extends from Lake Baikal toward Northeast China, and there is a northerly wind upstream of the northern mountain complex (located near the Korean-Chinese border). On the other hand, for ON type, the ridge of Siberian high extends southeastward from Lake Baikal, and there is a westerly wind upstream of the northern mountain complex. The pressure pattern of AP type was similar to the OP type and that of AN type was also similar to ON type. Thus it was difficult to differentiate AP type and OP type and AN type and ON type based on the synoptic pressure pattern only. The four types were determined by U (wind speed normal to the Taebaek mountains) and Froude number (FN). That is, for OP type, average FN and U at Yeongdong coast are ~2.0 and ~6 m s−1, and those at Yeongseo region are 0.0 and 0.1 m s−1, respectively. On the contrary, for ON type, average FN and U at Yeongdong coast are 0.0 and 0.2 m s−1, and those at Yeongseo region are ~1.0 and ~4 m s−1, respectively. For AP type, average FN and U at Yeongdong coast are ~1.0 and ~4 m s−1, and those at Yeongseo region are 0.0 and 0.2 m s−1, whereas for AN type, average FN and U at Yeongdong coast are 0.1 and 0.6 m s−1 and those at Yeongseo region are ~1.0 and ~3 m s−1, respectively. Based on the result, a schematic diagram for each type was suggested.
Abstract
Precipitation and no-precipitation events under the influence of the Siberian high pressure system in Yeondong region, were analysed and classified as four types [obvious precipitation event (OP) type, obvious no-precipitation event (ON) type, ambiguous precipitation event (AP) type and ambiguous no-precipitation event (AN) type], according to the easiness in determining whether to have precipitation or not in Yeongdong region, to help in improving the forecast skill. Concerning the synoptic pressure pattern, for OP type, the ridge of Siberian high extends from Lake Baikal toward Northeast China, and there is a northerly wind upstream of the northern mountain complex (located near the Korean-Chinese border). On the other hand, for ON type, the ridge of Siberian high extends southeastward from Lake Baikal, and there is a westerly wind upstream of the northern mountain complex. The pressure pattern of AP type was similar to the OP type and that of AN type was also similar to ON type. Thus it was difficult to differentiate AP type and OP type and AN type and ON type based on the synoptic pressure pattern only. The four types were determined by U (wind speed normal to the Taebaek mountains) and Froude number (FN). That is, for OP type, average FN and U at Yeongdong coast are ~2.0 and ~6 m s−1, and those at Yeongseo region are 0.0 and 0.1 m s−1, respectively. On the contrary, for ON type, average FN and U at Yeongdong coast are 0.0 and 0.2 m s−1, and those at Yeongseo region are ~1.0 and ~4 m s−1, respectively. For AP type, average FN and U at Yeongdong coast are ~1.0 and ~4 m s−1, and those at Yeongseo region are 0.0 and 0.2 m s−1, whereas for AN type, average FN and U at Yeongdong coast are 0.1 and 0.6 m s−1 and those at Yeongseo region are ~1.0 and ~3 m s−1, respectively. Based on the result, a schematic diagram for each type was suggested.
참고문헌 (23)
- Baines, P. G., "Observations of stratified flow past Three-dimensional barriers", J. Geophys. Res. Oceans, 84, pp.7834~7838 (1979)
- Michael Evans, "The Elevation-Dependence of Snowfall in the Appalachian Ridge and Valley Region of Northeastern Pennsylvania", Journal of Operational Meteorology, 05(08), pp.87~102 (2017), National Weather Association[DOI]
- Forbes, G. S., "Synoptic and mesoscale aspects of an Appalachian ice storm associated with cold-air damming", Mon. Wea. Rev, 115, pp.564~591 (1987)
- 한지영, "두 개의 산악 위에서의연속적으로 성층화된 흐름의 흐름 체계", 대기, 17(3), pp.231~240 (2007), 한국기상학회
- Hong, M. R., "A Study on a Heavy Snowfall Phenomenon over Yeongdong Coastal Area Using a Trajectory Analysis", M.S, pp.2017
- Hong, S. -Y., "A New Vertical Diffusion Package with an Explicit Treatment of Entrainment Processes", Mon. Wea. Rev, 134, pp.2318~2341 (2006)
- Michael J. Iacono, "Radiative forcing by long-lived greenhouse gases: Calculations with the AER radiative transfer models", Journal of Geophysical Research, 113(D13) (2008), American Geophysical Union (AGU)[DOI]
- 장욱, "봄철 강릉지역에서 발생하는 강풍에 대한 연구", 대기, 18(3), pp.207~224 (2008), 한국기상학회
- Kain, J. S., "The Kain-fritsch convective parameterization:an update", J. Appl. Meteor. Climatol, 43, pp.170~181 (2004)
- 김아현, "종관규모 기압능이 한반도를 덮고 있는 기간에 중부지방에서 나타난 호우의 발생 원인", 대기, 26(4), pp.577~598 (2016), 한국기상학회
- Kim, M. -K., "A Comparative Study of the Low Clouds Off the Coast and those Entering the Coastal Area", M.S, pp.2016
- Kim, J. -H., "Study on mechanisms and orographic effect for the springtime downslope windstorm over the Yeongdong region", Atmosphere, 16, pp.67~83 (2006)
- 이재규, "북동 기류와 관련된 영동해안 지역의 대설 사례에 대한 WRF수치모의 연구", 대기, 18(4), pp.339~354 (2008), 한국기상학회
- 이재규, "역전층이 영동 지역의 활강풍에 미치는 영향에 관한 민감도 수치실험 연구", 대기, 19(4), pp.331~344 (2009), 한국기상학회
- 이재규, "북한 지역의 산맥군이 영동 지역의 겨울철 강설 분포에 미치는 영향에 관한 수치 연구", 대기, 19(4), pp.345~370 (2009), 한국기상학회
- Kyo-Sun Sunny Lim, "Development of an Effective Double-Moment Cloud Microphysics Scheme with Prognostic Cloud Condensation Nuclei (CCN) for Weather and Climate Models", Monthly Weather Review, 138(5), pp.1587~1612 (2010), American Meteorological Society[DOI]
- Manins, P. C., "Mesoscale observations of upstream blocking", Q. J. Roy. Meteor. Soc, 108, pp.427~434 (1982)
- Mason, P. J., "On the interaction of topography and Ekman boundary layer pumping in a stratified atmosphere", Q. J. Roy. Meteor. Soc, 104, pp.475~490 (1978)
- Using the Froude Number to Improve Orographic Snow Forecasts in the Green Mountains of Vermont, "Muccilli, M.", Eastern Region, 43~, pp.Eastern Region Technical Attachment No. 2015-05 (2015)
- Technology evaluation through diagnosis of forecast capability, "Park, S. K.", Atmospheric science and earth quake research, 129~, pp.KMA TRKO201100007095 (2007)
- A description of the advanced research WRF version 3, "Skamarock, W. C.", NCAR, 113~, pp.NCAR Tech. Note NCAR (2008), TN-475+STR
- Smith, R. B., "Synoptic observations and theory of orographically disturbed wind and pressure", J. Atmos. Sci, 39, pp.60~70 (1982)
- 송지애, "겨울철 시베리아 고기압과 관련된 영동 해안 강수량과해기차 및 바람의 상관성에 관한 연구", 대기, 26(1), pp.127~140 (2016), 한국기상학회