2012 Annual Report
The goal of this project is to efficiently run the SWAT watershed model on a supercomputer for application to water management and sustainability on Maui; this understanding directly contributes to objective 1 of the in-house project 5320-21610-001-00D which this project was originally established under (expired in FY2011).
A collaboration with the UH International Pacific Research Center (IPRC) has been established to complete a micro climate model of Maui which will be used as inputs to the SWAT model. The climate simulation will be completed at a minimum grid size of 1 km and forward for over twenty years.
A meeting at University of Hawaii Manoa was conducted on the week of June 25, 2012 to review progress on the overall Navy/USDA effort to determine the feasibility of converting the HC&S commercial sugar operation on 40,000 acres to biofuel production. On June 26 HOSC briefed USDA/ARS, Temple Texas, the developer of SWAT on the early results of the micro climate modeling for Maui. The micro climate is an innovation in climate modeling which typically involves a much larger geographical region. The micro climate model required a series of nesting computations which grew increasing more time consuming. At the current time the climate model for Maui has been completed for a few years but the objective will be to reach a prediction period of fifty years.
The UH HOSC team is working with USDA/ARS, Temple, Texas on the parallelization of the SWAT code (pSWAT). We received a copy of the SWAT code which will be paralyzed at UH. The code has been installed on the HOSC supercomputer and is currently being tested on a single core. Initial changes in the code are being implemented and tested to insure that no spurious effects have been introduced. We will compare results from a single core computation with the pSWAT results and validate the accuracy of the parallelized code. We have received two large datasets for two previous studies which we will compare with the results from pSWAT. We are also preparing a Microsoft operating system version of pSWAT to operate on smaller multiple processors.