September 26, 2021, 07:07:55 PM


Due to SPAM attacks, new members must be approved before posting.  Please email when registering and your account will be approved.

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Topics - azarcos

Using SLAMM / changes in wetlands categories
June 25, 2020, 09:59:35 AM

I am modelling the initial conditions for time-zero and I found some issues in the wetland's conversion. My initial land cover (based on Lidar data) starts with the categories: Dry land >> Transitional >> Irregularly flooded >> Regularly flooded >> tidal flat. I assumed a scenario of protection for all dry land.

The final land cover (after time-zero) ends with the categories: Dry land >> Transitional >> Irregularly flooded >> Regularly flooded >> tidal flat >> Estuarine Open Water.
I have a very significant loss of the transitional marsh and a significant gain in estuarine open water category. There are almost no changes in the Regularly flooded and Irregularly flooded categories.
According to the manual changes in the transitional marsh should be expected "when it falls below its lower elevation boundary, this category generally converts to "Regularly-Flooded Marsh. (...)"
Any idea about what is happening with to the transitional marsh and Estuarine Open Water?

Using SLAMM / Model calibration
June 02, 2020, 04:27:05 AM
Hi Jonathon,

I am new to SLAMM. I want to conducted model calibration by running the "time zero" step, following the same methodology in Clough et al. (2016). I know already that no sea-level rise, accretion or erosion should be considered, but I am not sure about what to introduce in the last year of simulation. For how long should I run the model?
In the SLR scenarios to run' should I apply 0m by 2100? Can you please provide more details on the calibration procedure?
Thanks for your help

Using SLAMM / DEM setup
January 31, 2020, 02:25:34 AM

I am new with this software. I want to setup a model for portugal. I have Lidar data for the baseline DEM, but I'm not certain about how to input this data into SLAMM . Could you provide a step by step overview?

My DEM is an ascii file (x,y,z) with a local coordinate system ETRS89:TM06 Portugal. I need to change this coordinate system to NAVD88? how to input coordinates in squared arranged grid? In the manual it  says that the "The model does not require NAVD88 data specifically, just that data be converted to an MTL basis. The user can either convert to a MTL basis prior to importing the data to SLAMM and set the "MTL-NAVD88" correction to zero, or use the other datum and interpret the "MTL-NAVD88" parameter to mean "MTL minus other datum." how to compute MTL-NAVD88 correction to zero?
Is there any tutorial to setup a model?

thanks a lot for your help!