A recently released study demonstrates a relationship between the man made effects on global warming and changes in patterns of precipitation. A news release summarizes the findings of a new study issued by Lawrence Livermore National Laboratory noting that the study:
“…observed changes in global (ocean and land) precipitation are directly affected by human activities and cannot be explained by natural variability alone. … Emissions of heat-trapping and ozone-depleting gases affect the distribution of precipitation through two mechanisms. Increasing temperatures are expected to make wet regions wetter and dry regions drier (thermodynamic changes); and changes in atmospheric circulation patterns will push storm tracks and subtropical dry zones toward the poles.”