In December of 1993, I was invited to lecture at the National Institute of Hydrology, in Roorke,
India. My presentation was titled "Management of floods and droughts in semiarid regions."
Two years later, in 1995, I followed with a related
paper entitled Management of droughts and
floods in the semiarid
Brazilian Northeast: The case for conservation.". The theoretical concepts were presented
in the paper
"Surface albedo and water reseources: The hydroclimatological impact of human activities,"
published in 1997.
A key element of the theory is
Budyko's model, which separates precipitation into its advective and evaporative components.
A crucial step is the quantification of the water vapor advected into the control volume.
At the end of the lecture,
one of the participants confided to me:
"Prof. Ponce, I have been in the field
of hydrology for about ten years,
and have not heard anybody talk about advective precipitation."