Authors
Jaehyung Yu
     Department of Geosciences, 
     Texas A&M University-Kingsville
      MSC175, 700 University Blvd. 
     Kingsville, TX 78363

   E-mail Jaehyung Yu

Jim Norwine
     Department of Geosciences, 
     Texas A&M University-Kingsville
      MSC175, 700 University Blvd. 
     Kingsville, TX 78363

   E-mail Jim Norwine

Ralph Bingham
     Department of Mathmatics/CKWRI
     Texas A&M University-Kingsville
     MSC218, 700 University Blvd. 
     Kingsville, TX  78363

and 

Claudia Tebaldi
     National Center for Atmospheric Research
     P.O. Box 3000 
     Boulder
     CO 80307

Title
Potential Climatic Deterioration in Semiarid Subtropical South Texas.

Abstract
The existing subhumid to semiarid subtropical climate of South Texas 
has been characterized in a variety of published reports as “problematic” 
due to a combination of limited precipitation, high evapotranspiration, 
and exaggerated inter-annual variability of rainfall.  Temperature and 
rainfall means calculated for the twentieth century indicated no shift 
away from these properties, although it was found that annual temperature 
averages were rising nearly every year at the century’s end. Climate models 
were used at the National Center for Atmospheric Research in Boulder, 
CO, to simulate how the regional climate might change during the present 
century, i.e., to indicate changes possibly related to global warming.  The 
climate of South Texas was found to be likely to be even more problematic 
in the years 2025, 2050 and 2100 than it is at present, due to projected 
annual rainfall averages near those of the present coupled with mean annual 
temperatures higher by ~4 oC.

Key words:  Climate, semiarid, Texas

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