A MODEL FOR REAL-TIME QUANTITATIVE RAINFALL FORECASTING USING REMOTE-SENSING .1. FORMULATION

被引:38
作者
FRENCH, MN
KRAJEWSKI, WF
机构
[1] UNIV IOWA,IOWA INST HYDRAUL RES,IOWA CITY,IA 52242
[2] UNIV IOWA,DEPT CIVIL & ENVIRONM ENGN,IOWA CITY,IA 52242
关键词
D O I
10.1029/93WR03249
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A physically based rainfall forecasting model for real-time hydrologic applications is developed with emphasis on utilization of remote sensing observations. Temporal and spatial scales of interest are lead times of the order of hours and areas of the order of 10 km2. The dynamic model is derived from conservation of mass in a cloud column as defined by the continuity equations for air, liquid water, water vapor, and cloud water. Conservation of momentum is modeled using a semi-Lagrangian frame of reference. The model state is vertically integrated liquid water content in a column of the atmosphere. Additionally, laws of thermodynamics, adiabatic air parcel theory, and cloud microphysics are applied to derive a basic parameterization of the governing equations of model dynamics. The parameterization is in terms of hydrometeorologic observables including radar reflectivity, satellite-infrared brightness temperature, and ground-level air temperature, dew point temperature, and pressure. Implementation and application is described by French et al. (this issue) and involves incorporation of uncertainty analysis and a two-dimensional spatial domain, where the dynamics of the continuous space-time rainfall process are discretized onto a rectangular grid.
引用
收藏
页码:1075 / 1083
页数:9
相关论文
共 69 条
[1]  
[Anonymous], 1981, USE SATELLITE DATA R
[2]  
ARKIN PA, 1989, J CLIMATE, V2, P1229, DOI 10.1175/1520-0442(1989)002<1229:ECSPFS>2.0.CO
[3]  
2
[4]  
AUSTIN GL, 1982, NOWCASTING
[5]  
BATTAN LJ, 1973, RADAR OBSERVATION AT
[6]  
BEARD KV, 1987, J ATMOS SCI, V44, P1509, DOI 10.1175/1520-0469(1987)044<1509:ANMFTE>2.0.CO
[7]  
2
[8]   OPERATIONAL NUMERICAL WEATHER PREDICTION [J].
BROWN, JA .
REVIEWS OF GEOPHYSICS, 1987, 25 (03) :312-322
[9]  
BROWN R, 1991, AM METEOROLOGICAL SO
[10]   NOWCASTING OF PRECIPITATION SYSTEMS [J].
BROWNING, KA ;
COLLIER, CG .
REVIEWS OF GEOPHYSICS, 1989, 27 (03) :345-370