OR/14/011 Troubleshooting

Barkwith, A* and Coulthard, T J**. 2011. CLiDE version 1.0 user guide. British Geological Survey Open Report, OR/14/011. *British Geological Survey, Environmental Science Centre, Keyworth, Nottingham, NG12 5GG, UK **Department of Geography, Environment and Earth Science, University of Hull, Cottingham Road, Hull, HU6 7RX, UK

OPENING EXECUTABLE • Check the number of available screens on computer. If displaying on a projection, the model may be opening on a separate screen. This can be checked by searching the Applications list in Windows Task Manager for the CLiDE executable running.

OPENING XML FILE • If the XML file has been edited using a text editor, an item within the XML may have been renamed. Save a new XML under a different name and compare the name of each variable to the XML that is needed. Update differing variable names. • An XML saved in an older version of CLiDE may not work with newer versions and vice versa due to a different list of variables required in the XML file. Save a new XML under a different name and compare the name of each variable to the XML that is needed. Update differing variable names.

LOADING INITIALISATION DATA • Check that the size of each array matches the other arrays and the header information. • Check date information in Setup tab is as expected. • Use a different text editor to view input files (line returns are picked up by some and not others). Notepad++ is recommended.

SIMULATION FREEZES • Allow the simulation time to process large amounts of data. When processing a catchment with a large number of nodes the daily timestep may take a few minutes to complete. • Increase the amount of memory available to the program by reducing the memory limit in the Setup tab to 1. • Check groundwater input file for zero, negative or small values (<10 m). If the groundwater reaches zero during the simulation this can cause instability. To prevent this, the entire catchment can be uplifted by adding 50 m to each nodal elevation in the DEM, bedrock and initial groundwater files. This can be removed during post-processing if required. • Check rainfall and potential evapotranspiration data exist for the previous, current and proceeding timestep being simulated when the platform froze. • Ensure output from previous simulation is not open in another program, as output files can not be over-written (as an exception, some text editors will allow this).

NO OUTPUT IS PRODUCED • Check the save file time in the Setup tab is as expected (a value of 1440 is daily).

• Check options are checked in the Save Options bar at the top of the GUI. • Check you are in the CLiDE