External Weather Data Assimilation to Simulate Wind and Temperature Fields in the Region of Gualeguaychú, Argentina

Abstract

This work shows the comparison between the results of wind and temperature simulation and data weather measurements in low layers near Gualeguaychú City, Argentine, for 12 h in January 1, 2011. The model ARPS (advanced regional prediction system) with two options in the boundary conditions is used. In such conditions, wave-radiating open (radiative) with relaxation to the initial state were used while otherwise used absorbing boundary conditions data forced from MBLM (meso-scale boundary layer model) operational forecasters used by the National Weather Office. The results of both simulations are compared with data measured by three weather stations located around of the Uruguay River. As both simulations are initialized using the same data, there is a better agreement between the values obtained by forcing the boundary conditions for which are using “radiative” boundary conditions after 2 h physical time from the start of the simulation.