Abstract: Rare events such as thunderstorm or hail days often fit one of two distributions, the Poisson or the negative binomial. These two models were tested on monthly and annual thunderstorm days as well as on annual hail days ...

Abstract: A regional precipitation analysis from a total of 813 recording stations in 11 West African countries for the drought period 1968?75 is presented. Results illustrate the severity and extent of meteorological drought which ...

Abstract: The development of a critical world food situation during the early 1970's was the background leading to the Large Area Crop Inventory Experiment (LACIE). The need was to develop a capability for timely monitoring of crops ...