HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Hello,

I am encountering an error while using the PC version if I put in user-entered meteorology data. The error can be seen either by attempting to run the model or by running the CheckFile button under Meteorology->DisplayData.

What seems to trigger it is if I run it consecutive times and the end time of the data is earlier than the end time that was used in the previous run.

Even by shutting the program completely and restarting it, the error appears if that condition occurs.

For example: Use a simple meteorology file like
12 10 19 12 00 270 5 1500 4
12 10 19 23 00 270 5 1500 4

That works fine.

If I redo the file, or even restart the entire program, and use data with an earlier end time such as:
12 10 19 12 00 270 5 1500 4
12 10 19 20 00 270 5 1500 4

This will result in the error.

The fix seems to be to manually delete the stndata.bin file between runs. Am I missing a step perhaps?

The meteorology files are written as direct access, so if you write a file with fewer time periods on top of a longer file, the additional records of the old file will remain. It is a feature rather than a bug permitting us to update individual records. However, as you point out, an automatic delete should be added to the GUI. Thanks for finding that.

Just curious. Was this bug ever fixed?

Yes, this should work now.

Thanks.