Some experiences about work with MM5 model from Penn
State/NCAR (Fifth Generation Mesoscale Modeling system from Pennsylvania State University/
National Center for Atmospheric Research) are described. Using meteorological information
from September-November /1998, during the second half of hurricane Atlantic season,
experimental work was development. The MM5 version generated by Dr. Victor Magaña and
Lic. José Luis Pérez in July 1998 at the CCA/UNAM ( Centro de Ciencias de la Atmósfera
de la Universidad Autónoma de México) was used. In this version, every data assimilation
process and model algorithm were prepared for personal computer. The AVN global model
provides the initial fields (geopotential high, temperature, relative humidity and wind
components at 1000,850, 700,500, 400,300,200,100 hPa levels and pressure and air
temperature at surface level). An adaptation to Cuban territory was realized. Two nested
grid in Lambert projection, the external for Inter - American Sea and the internal for
Cuban territory, were used. Their central coordinates are located at 23°N and 80°W. The
experimental results indicate that the MM5 model is very efficient for short range
prediction in tropical latitudes, especially in presence of notable events like frontal
systems, tropical cyclones and tropical waves.
