Grasso

The Colorado State University Regional Atmospheric Modeling System (CSU-RAMS) was used to study dryline sensitivity to soil moisture.  Results suggest that dryline development may depend on the underlaying soil wetness. Sensitivity runs were conducted and show that as the soil moisture is reduced, the horizontal water vapor gradient at the dryline decreases.  The figure shows the low-level water vapor in simulations where the soil moisture amplitude was 75, 50 and 25% of the observed values.

A manuscript that was submitted to Monthly Weather Review entitled, "A numerical simulation of dryline sensitivity to soil moisture" is pending review.