해수면 온도 변화가 서해상 강설에 미치는 영향 연구
A Study of the Effects of SST Deviations on Heavy Snowfall over the Yellow Sea
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참고문헌
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초록
We examine the effects of the sea surface temperature (SST) distribution on heavy snowfall over the Yellow Sea using high-resolution SST products and WRF (Weather Research and Forecasting) model simulations in 30 December 2010. First, we evaluate the model by comparing the simulated and observed fresh snowfall over the Korean peninsula (Ho-Nam province). The comparison shows that the model reproduces the distributions and magnitudes of the observed snowfall. We then conduct sensitivity model simulations where SST perturbations by ±1.1oC relative to baseline SST values (averaged SST for 5~15oC) are uniformly specified over the region of interest. Results show that ±1.1oC SST perturbation simulations result in changes of air temperature by +0.37/−0.38oC, and by ±0.31 hPa for sea level pressure, respectively, relative to the baseline simulation. Atmospheric responses to SST perturbations are found to be relatively linear. The changes in SST appear to perturb precipitation variability accounting for 10% of snow and graupel, and 18% of snowfall over the Yellow Sea and Ho-Nam province, respectively. We find that anomalies of air temperature, pressure, and hydrometeors due to SST perturbation propagate to the upper part of cloud top up to 500 hPa and show symmetric responses with respect to SST changes.
Abstract
We examine the effects of the sea surface temperature (SST) distribution on heavy snowfall over the Yellow Sea using high-resolution SST products and WRF (Weather Research and Forecasting) model simulations in 30 December 2010. First, we evaluate the model by comparing the simulated and observed fresh snowfall over the Korean peninsula (Ho-Nam province). The comparison shows that the model reproduces the distributions and magnitudes of the observed snowfall. We then conduct sensitivity model simulations where SST perturbations by ±1.1oC relative to baseline SST values (averaged SST for 5~15oC) are uniformly specified over the region of interest. Results show that ±1.1oC SST perturbation simulations result in changes of air temperature by +0.37/−0.38oC, and by ±0.31 hPa for sea level pressure, respectively, relative to the baseline simulation. Atmospheric responses to SST perturbations are found to be relatively linear. The changes in SST appear to perturb precipitation variability accounting for 10% of snow and graupel, and 18% of snowfall over the Yellow Sea and Ho-Nam province, respectively. We find that anomalies of air temperature, pressure, and hydrometeors due to SST perturbation propagate to the upper part of cloud top up to 500 hPa and show symmetric responses with respect to SST changes.
참고문헌 (27)
- Cheong, S.-H, "Classification of Snowfalls over the Korean Peninsula Based on Developing Mechanism", Atmosphere, 16, pp.33~48 (2006)
- Cha, Y. M, "Impacts of the high-resolution sea surface temperature distribution on modeled snowfall formation over the Yellow Sea during a cold-air outbreak", Wea. Forecasting, 26, pp.487~503 (2011)
- Donlon, C. J, "Implications of the oceanic thermal skin temperature deviation at high wind speed", Geophys. Res. Lett, 26, pp.2505~2508 (1999)
- Donlon, C. J., "The Operational Sea Surface Temperature and Sea Ice Analysis (OSTIA) system", Remote Sens. Environ, pp.140~158 (2012)
- Dudhia, J, "Numerical study of convection observed during the winter monsoon experiment using a mesoscale two-dimensional Model", J. Atmos. Sci, 46, pp.3077~3107 (1989)
- Hong, S.-Y, "A new vertical diffusion package with an explicit treatment of entrainment processes", Mon. Wea. Rev, 134, pp.2318~2341 (2006)
- Hong, S.-Y, "Next-generation Numerical Weather Prediction: Bridging parameterization, explicit clouds, and large eddies", Bull. Amer. Meteoro. Soc, 93, pp.ES6~ES9 (2012)
- Kain, J. S, "The Kain-Fritsch convective parameterization: An update", J. Appl. Meteor, 43, pp.170~181 (2004)
- Sung-Dae Kang, "Numerical Study on the Formation and Maintenance Mechanisms of Cloud Street in the East Sea during Cold Air Outbreak", 한국기상학회지, 44(2), pp.105~119 (2008), 한국기상학회
- 이화운, "고해상도 해수면온도자료가 한반도 남동해안풍력자원 수치모의에 미치는 영향", 한국환경과학회지, 19(2), pp.171~184 (2010), 한국환경과학회
- Lee, S. H, "Influence of continuous satellite-based SST distribution on heavy snowfall events over the Korean Peninsula", Int. J. Remote Sens, 31, pp.2853~2883 (2010)
- Lee, Y.-H, "Numerical simulation of structure and property of cloud street over East Sea", Atmosphere, 12, pp.326~328 (2002)
- Lim, K. -S., "Development of an effective double-moment cloud microphysics scheme with prognostic cloud condensation nuclei (CCN) for weather and climate models", Mon. Wea. Rev, 138, pp.1587~1612 (2010)
- Liu, A. Q, "The effect of the sea-ice zone on the development of boundary-layer roll clouds during cold air outbreaks", Bound.-Layer. Meteor., 118, pp.557~581 (2006)
- Liu, T., "Ocean-atmosphere interaction over Agulhas Extension meanders", J. Climate, 20, pp.5784~ (2007)[DOI]
- Malwer, E. J, "Radiative transfer for inhomogeneous atmospheres: RRTM, a validated correlated-k model for the longwave", J. Geophys. Res., 102, pp.16663~16682 (1997)
- Minobe, S, "Influence of the Gulf Stream on the troposphere", Nature, 452, pp.206~209 (2008)
- Ohtake, H, "Formation Mechanism of a Thick Cloud Band over the Northern Part of the Sea of Japan during Cold Air Outbreaks", J. Meteor. Soc. Japan, 87, pp.289~306 (2009)
- 박경애, "북동아시아 해역에서 인공위성관측에 의한 해수면온도의 오차 특성", 한국지구과학회지, 29(3), pp.280~289 (2008), 한국지구과학회
- Park, R. S, "Implications of sea surface temperature deviations in the prediction of wind and precipitable water over the Yellow Sea", J. Geophys. Res, 116, pp.D17106~ (2011)
- Seol, K.-H, "Effects of Physical Parameterizations on the Simulation of a Snowfall Event over Korea Caused by Air-mass Transformation", Atmosphere, 16, pp.203~213 (2006)
- A description of the advanced research WRF version 3, "Skamarock, W. C.", NCAR Tech. Note, 113~, pp.NCAR (2008), TN-4751STR
- Song, Q., "Surface wind response to oceanic fronts", J. Geophys. Res, 111, pp.C12006~ (2006)[DOI]
- Stark, J., "OSTIA: An operational, high resolution, real time, global sea surface temperature analysis system", OCEANS 2007-Europe, pp.1~4 (2007)
- Xie, J, "Assessment and inter-comparison of five high-resolution sea surface temperature products in the shelf and coastal seas around China", Cont. Shelf Res, 28, pp.1286~1293 (2008)
- Yamamoto, M, "Mesoscale structures of two types of cold-air outbreaks over the East China Sea and the effect of coastal sea surface temperature", Meteor. Atmos. Phys, 115, pp.89~112 (2012)
- Young, G. S, "Rolls, streets, waves, and more: A review of quasi-two-dimensional structures in the atmospheric boundary layer", Bull. Amer. Meteor. Soc, 83, pp.997~1001 (2002)