We generally deliver data as GEOTIFF files now as they are georeferenced, well compressed (lossless), and quickly imported into any GIS software.
The problem was, the files were originally run and projected by TNC Florida (our project was designed to utilize previous work completed), and they chose the projection of NAD83 Florida West. We did not reproject their raster files and ASC files do not carry their projection with them, thus resulting in the confusion.
Hope this is useful -- please let us know if you have any other questions or concerns!
Jonathon, Amy and Marco, We have a problem with the Charlotte Harbor data. The Apalachicola grid is displayed in the correct position, but the Charlotte Harbor gird is not. Both are undefined projections in this image. I worked on the projection conversion (project raster, define projection etc) this morning for several hours before going to Dr. Mark Barrett our Associate Research Scientist to see if I was missing anything. We both came to the same conclusion that the files may have been created and converted incorrectly and we are unable to use any of our tools to correct them so that each would project correctly. Are we correct in our findings and do you have a solution for us? Thanks, BrianYou cannot see attachments on this board.
Editable Max Fetch for Marsh -- Marsh horizontal erosion rates will now be applied when this editable marsh fetch has been exceeded for each marsh cell (previously this was hard-wired at 9km and this value will be loaded into older SLAMM6 simulations.). This may be edited on a subsite by subsite basis. This parameter is not relevant if the wave-energy erosion submodel is being utilized.
Also the "Last year of simulation variable" is always utilized even if "run specific years" is selected. The interface was modified to make this more clear.
Editable Max Fetch Threshold for Marsh Erosion -- Marsh horizontal erosion rates will now be applied when an editable marsh fetch has been exceeded for each marsh cell (previously this was hard-wired at 9km and this value will be loaded as a default into older SLAMM6 simulations.). The threshold may be edited on a subsite by subsite basis. (This parameter is not relevant if the wave-energy erosion submodel is being utilized.)
We meant to add this as a feature of SLAMM 6.7 initially, but got so caught up in the new fancy wave power formulation that we forgot to modify the basic model.
Also -- the "Last year of simulation" variable is always utilized even if "run specific years is selected." The interface was modified to make this more clear.
Have you examined the users guide? The input required is cell-specific flooding heights in units of NAVD88. If you only have current storm surge height SLR will be added to it. If you have SLR-specific maps those can also be accommodated though the file naming convention is rather inflexible.
What is your specific question? Probably it would be best to start with the storm surge data that you have available and consider how to process that into the required raster format.
Last post by pse1999 - April 27, 2017, 09:19:19 AM
I am not sure what you mean by optimization? Is it the "track all cells" checkbox? If so, I did that and still, it gives me "999" No data for the dry land cells. I tried to convert blank to dry land and it would not track that either. One small success was filling the cells with upper dry land, even though received no elevation data. I've attached the pre-fill image here.
More recent NWI shapefiles do not specifically identify dry land; dry land registers as "no-data" in the NWI dataset (as it are not wetlands!). (Historic data sometimes used the "U" designation for upland.)
Because of this, dry land needs to be manually added using the "turn blank to dry land" button. For that to work, optimization needs to be turned off in the file setup window. Also elevation data need to be present as it is how the model discerns dry land from open water when adding dry land. Another option is to use the "fill cells" feature, but dry land usually bleeds into open ocean in that case.
Hope this is helpful -- send a screen capture or more information if not, please. Best -- Jonathan