지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
Data for model analysis derived from the finite volume (fv) GCM (Goddard Earth Observing System Ver. 4, GEOS-4) and the Land Data Assimilation System (LDAS) have been utilized in a mesoscale model. These data are tested to provide initial conditions and lateral boundary forcings to the Purdue Mesoscale Model (PMM) for a case study of the Midwestern flood that took place from 21-23 May 1998. The simulated results with fvGCM and LDAS soil moisture and temperature data are compared with that of ECMWF reanalysis. The initial conditions of the land surface provided by fvGCM/LDAS show significant differences in both soil moisture and ground temperature when compared to ECMWF control run, which results in a much different atmospheric state in the Planetary Boundary Layer (PBL). The simulation result shows that significant changes to the forecasted weather system occur due to the surface initial conditions, especially for the precipitation and temperature over the land. In comparing precipitation, moisture budgets, and surface energy, not only do the intensity and the location of precipitation over the Midwestern U.S. coincide better when running fvGCM/LDAS, but also the temperature forecast agrees better when compared to ECMWF reanalysis data. However, the precipitation over the Rocky Mountains is too large due to the cumulus parameterization scheme used in the PMM. The RMS errors and biases of fvGCM/LDAS are smaller than the control run and show statistical significance supporting the conclusion that the use of LDAS improves the precipitation and temperature forecast in the case of the Midwestern flood. The same method can be applied to Korea and simulations will be carried out as more LDAS data becomes available.
목차
등록된 정보가 없습니다.
참고문헌 (31)
참고문헌 신청
Anthes, R.A. / 1978 / A cumulus parameterization scheme utilizing a one-dimensional cloud model / Monthly Weather Review 105:270~286
Bonan, G.B. / 1996 / A land surface model for ecological, hydrological, and atmosphere studies :150
Bosilovich, M.G. / 1995 / Formation and verification of a land surface parameterization for atmospheric models / Boundary Layer Meteorology 73:321~341
Bosilovich, M.G. / 1998 / Simulation of soil moisture and temperature / Journal of Atmospheric Science 55:1170~1183
Bosilovich, M.G. / 1999 / Numerical simulation of the 1993 Midwestern flood: Land-Atmosphere Interactions / Journal of Climate 12:1490~1505
Bonan, G.B. / 1996 / A land surface model for ecological, hydrological, and atmosphere studies :150
Bosilovich, M.G. / 1995 / Formation and verification of a land surface parameterization for atmospheric models / Boundary Layer Meteorology 73:321~341
Bosilovich, M.G. / 1998 / Simulation of soil moisture and temperature / Journal of Atmospheric Science 55:1170~1183
Bosilovich, M.G. / 1999 / Numerical simulation of the 1993 Midwestern flood: Land-Atmosphere Interactions / Journal of Climate 12:1490~1505
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