Data Assimilation of AVHRR and MODIS data for Land Base Initialization and Boundary Conditions in the UTC-M Atmospheric Boundary Layer Sea-Breeze Model of Space Coast Florida
Bostater, Charles R.
Huddleston, Lisa H.
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The purpose of this paper is to present results of simulations of the Florida Tech UTC-M sea-breeze model²² with the addition of a simplified atmospheric downwelling radiation subroutine¹’⁴ combined and a thermal inertia subroutine¹⁷’¹⁹’²⁰ into the atmospheric planetary boundary layer model, in order to calculate time dependant heat flux boundary conditions at the air-land boundary that are derived from satellite data from AVHRR and MODIS sensors. The improved UTC-M planetary boundary layer model with this thermal sub-model subroutine is used to demonstrate the use of thermal inertia to help estimate heat fluxes at the land-air interface which in turn influences convergence and vertical fluxes near the bottom boundary, and which may affect mesoscale meteorological wind and seabreeze over complex land-water margins. Additionally, message passage interface (MPI) parallelizing Fortran techniques 7 were used to improve the computational time when the model grid was decreased down to 2 or 1 km cell when simulations where performed on the FIT supercomputer based on an IBM Beowulf Linux cluster. We present some results of the UTC-M simulations and associated results due to the influence of the parameterization of the net surface radiation and thermal inertia using the spectral or wavelength (channel) specific data from MODIS and AVHRR satellite sensors.