Variables simulation of atmospheric weather

The methodology introduced by Richardson and Wright (1984), was reviewed, modified and applied in order to simulate the variables of the atmospheric weather: maximum and minimum temperature, global radiation and precipitation observed at the Agrometeorological Station of Montecillo, of the ''Colegio de Postgraduados,'' Montecillo, Mexico, Mexico. Precipitation simulation, was carried out for using model: Markov chain of first order-Gamma. The temperature and radiation were taken by weakly stationary generation procedure. A program called SIMULA was developed, in order to generate the suitable variables. Initially two years were selected at random (1984, 1987) and the information was compared by periods of five days, by means of a lineal model, in order to see their similitude. The procedure to simulated this variables was compared with to reference year (1933), and the process of simulation resulted satisfactory.