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http://dx.doi.org/10.14191/Atmos.2015.25.1.149

Development and Validation of the Coupled System of Unified Model (UM) and PArameterized FOG (PAFOG)  

Kim, Wonheung (Department of Atmospheric Sciences, Yonsei University)
Yum, Seong Soo (Department of Atmospheric Sciences, Yonsei University)
Publication Information
Atmosphere / v.25, no.1, 2015 , pp. 149-154 More about this Journal
Abstract
As an attempt to improve fog predictability at Incheon International Airport (IIA) we couple the 3D weather forecasting model currently operational in Korea Meteorological Administration (regional Unified Model, UM_RE) with a 1D turbulence model (PAFOG). The coupling is done by extracting the meteorological data from the 3D model and properly inserting them in the PAFOG model as initial conditions and external forcing. The initial conditions include surface temperature, 2 m temperature and dew point temperature, geostrophic wind at 850 hPa and vertical profiles of temperature and dew point temperature. Moisture and temperature advections are included as external forcing and updated every hr. To validate the performance of the coupled system, simulation results of the coupled system are compared to those of the 3D model alone for the 22 sea fog cases observed over the Yellow Sea. Three statistical indices, i.e., Root Mean Square Error (RMSE), linear correlation coefficient (R) and Critical Success Index (CSI), are examined, and they all indicate that the coupled system performs better than the 3D model alone. These are certainly promising results but more improvement is required before the coupled system can actually be used as an operational fog forecasting model. For the RMSE, R, and CSI values for the coupled system are still not good enough for operational fog forecast.
Keywords
Fog prediction; PAFOG; UM_RE; UM_RE+PAFOG coupled system;
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1 Ballar, S. P., B. W. Golding, and R. N. B. Smith, 1991: Mesoscale model experimental forecasts of the haar of northeast Scotland. Mon. Wea. Rev., 119, 2107-2123.   DOI
2 Bott, A., and T. Trautmann, 2002: PAFOG-a new efficient forecast model of radiation fog and low-level stratiform clouds. Atmos. Res., 64, 191-203.   DOI
3 Chaumerliac, N., E. Richard, J. P. Pinty, and E. C. Nickerson, 1987: Sulfur scavenging in a mesoscale model with quasi-spectral microphysics: two-dimensional results for continental and maritime clouds. J. Geophys. Res., 92, 3114-3126.   DOI
4 Cho, Y.-K., M.-O. Kim, and B.-C. Kim, 2000 : Sea fog around the Korean Peninsula, J. Appl. Meteorol., 39, 2473-2479.   DOI
5 Fu, G., J. T. Guo, S. P. Xie, Y. H. Duane, and M. G. Zhang, 2006: Analysis and high-resolution modeling of a dense sea fog event over the Yellow Sea. Atmos. Res., 81, 293-303.   DOI
6 Gultepe, I. R., and Coauthors, 2007: Fog research: A review of past achievements and future perspectives. Pure Appl. Geophys., 164, 1420-9136.
7 Kim, C. K., and S. S. Yum, 2012: A numerical study of sea fog formation over cold sea surface using a onedimensional turbulence model coupled with the Weather Research and Forecasting Model. Bound.- Layer Meteor., 143, 481-505.   DOI
8 Kim, C. K., and S. S. Yum, 2013: A study on the transition mechanism of stratus cloud in fog over warm sea surface using a single column model coupled with WRF. Asia-Pac. J. Atmos. Sci., 49, 245-257.   DOI
9 Kim, D. J., H. Park, S.-W. Joo, J.-O. Lim, B.-K. Park, H.-D. Yoo, and J.-Y. Joo, 2009: Unified numerical forecasting system of performance evalution. Proceedings of the Spring Meeting of KMS 2009, 218-219.
10 Koracin, D., J. Businger, C. Dorman, and J. Lewis, 2005: Formation, evolution, and dissipation of coastal sea fog. Bound.-Layer Meteor., 117, 447-478.   DOI
11 Lee, H. J., S.-W. Joo, D. J. Kim, J. H. Son, and H.-D. Yoo, 2009: Unified numerical forecasting system of characteristic analysis. Proceedings of the Spring Meeting of KMS 2009, 334-335.
12 Mellor, G. L., and T. Yamada, 1974: A hierarchy of turbulence closure models for planetary boundary layers. J. Atmos. Sci., 31, 1791-1806.   DOI
13 Nickerson, E. C., E. Richard, R. Rosset, and D. R. Smith, 1986: The numerical simulation of clouds, rain, and airflow over the Vosges and Black Forest mountains: a meso-h model with parameterized microphysics. Mon. Wea. Rev., 114, 398-414.   DOI
14 Van der Velde, I. R., G. J. Steeneveld, B. G. J. Wichers Schreur, and A. A. M. Holtslag, 2010: Modeling and forecasting the onset and duration of severe radiation fog under frost conditions. Mon. Wea. Rev., 138, 4237-4253.   DOI   ScienceOn
15 Zdunkowski, W. G., W.-G. Panhans, R. M. Welch, and G. J. Korb, 1982: A radiation scheme for circulation and climate models. Beitr. Phys. Atmos., 55, 215-238.