deletions | additions       diff --git a/RVIC overview.tex b/RVIC overview.tex  index d1ad5be..1584dca 100644  --- a/RVIC overview.tex  +++ b/RVIC overview.tex 
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For short simulations, or simulations that required frequent restarts or checkpointing, the computational cost of the developing the IRFs limited the model's applicability in coupled models.  In the case of RVIC, the IRFs are developed prior to the beginning of the coupled model simulation and are saved in a netCDF format for use in subsequent simulations.  \item Impulse response functions may be developed at high-resolution (e.g. 16th $^{\circ}$) 1/16th$^{\circ}$)  before being upscaled to the land surface model grid (e.g. T382). A major limitation of the original model was the requirement that a flow direction raster needed to exist on any potential land surface model grids.  RVIC adds the ability to develop the IRFs using existing, high-resolution, flow direction rasters \citep[e.g.]{Wu_2011} before using a conservative remapping technique \cite{Jones_1999} to upscale the IRFs to the native grid of the land surface model.  This feature 1) eliminates the need to develop flow directions rasters for many spatial grids, and 2) preserves the high-resolution flow characteristics of the initial flow direction raster. 
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