Alternate Run Modes:Inset Models

From Gsshawiki
Jump to: navigation, search

Inset Models

GSSHA is able to share data between individual models. The basic process goes like this:

  1. Create the Tier 1 (larger) model
  2. Create the Tier 2 (inset) model
  3. In the Tier 1 model project file, add the XY boundary output cards to refer to the Tier 2 model mask file and output data sets
  4. In the Tier 2 model project file, add the XY boundary input cards to refer to the new data sets from the Tier 1 model
  5. Run the Tier 1 model
  6. Run the Tier 2 model

XY Boundary Output Cards – used in the Tier 1 model:

CARD Example Parameter
XYBDYOUTPUT_MASK "..\Tier2Model\Tier2Model.msk"
XYBDYOUTPUT_OVDEP "..\Tier2Model\Tier1Model.ovdep.ts"
XYBDYOUTPUT_STFLOW "..\Tier2Model\Tier1Model.sthyd.ts"
XYBDYOUTPUT_GWHEAD "..\Tier2Model\Tier1Model.gwhead.ts"

XY Boundary Input Cards - used in the Tier 2 model:

CARD Example Parameter
XYBDYINPUT_OVDEP "Tier1Model.ovdep.ts"
XYBDYINPUT_STFLOW "Tier1Model.sthyd.ts"
XYBDYINPUT_GWHEAD "Tier1Model.gwhead.ts"

The Tier 1 GSSHA simulation will read the Tier 2 mask file and determine where the edges of the Tier 2 model overlap the Tier 1 grid and also where they intersect the Tier 1 stream network. The Tier 1 model will output data for the overland depth (XYBDYOUTPUT_OVDEP), the stream flow (XYBDYOUTPUT_STFLOW), and the groundwater head (XYBDYOUTPUT_GWHEAD) at the edge locations (all Tier 1 cells with Tier 2 edge cells, or nearest Tier 1 stream link/node as it crosses the Tier 2 grid edge) it identified.

GSSHA User's Manual

18 Alternate Run Modes
18.1     MPI and OpenMP Parallelization
18.2     Simulation Setup for Alternate Run Modes
18.3     Batch Mode Runs
18.4     Automated Calibration with Shuffled Complex Evolution
18.5     Monte Carlo Runs
18.6     ERDC Automated Model Calibration Software
   18.6.1     Efficient Local Search
   18.6.2     Multistart
   18.6.3     Trajectory Repulsion
   18.6.4     Effective and Efficient Stochastic Global Optimization
18.7     Inset Models