backwards trajectories for 2 months

[LenaLatah]

Hello,
I’m trying to calculate 7 days backwards trajectories for 2 months. The meteorological data is taken from ARL data FTP Reanalysis. When I run the model > special run> daily for one month period as a result I’m getting files in different length, some of them seem to have seven days info available, but most of them have the trajectories just for one day. I wonder why could it be and how to fix it, i.e. how to get 7days backwards trajectories for each day of the whole month.

[barbara.stunder]

There is a description of the 'run daily' feature in section 5.1 of the Tutorial at http://www.ready.noaa.gov/documents/Tut ... index.html.

The key is that when you first go into Trajectory - Trajectory Setup, you are making a template for the trajectories. For 7-day trajectories, set the Total run time to 168 hours. To go 7 days back from days 1-7 of the month, the previous month's meteorology data file must also be chosen.

[LenaLatah]

Thank you for the reply.

I do exactly as you said, but the problem is that most of my tdump files are not containing the full info.
For example, when running for 168 hours i have lots of files like this big:

3 1
CDC1 14 8 1 0 0
CDC1 14 9 1 0 0
CDC1 14 10 1 0 0
1 BACKWARD OMEGA
14 9 5 12 26.500 -155.690 500.0
1 PRESSURE
1 1 14 9 5 12 0 0 0.0 26.500 -155.690 500.0 958.9
1 1 14 9 5 11 0 0 -1.0 26.536 -155.539 506.7 958.5
1 1 14 9 5 10 0 0 -2.0 26.582 -155.387 515.8 957.7
1 1 14 9 5 9 0 0 -3.0 26.638 -155.234 527.5 956.6
1 1 14 9 5 8 0 0 -4.0 26.703 -155.080 542.1 955.2
1 1 14 9 5 7 0 0 -5.0 26.777 -154.927 559.8 953.4
1 1 14 9 5 6 0 0 -6.0 26.862 -154.776 580.7 951.1
1 1 14 9 5 5 0 0 -7.0 26.952 -154.628 601.7 948.6
1 1 14 9 5 4 0 0 -8.0 27.044 -154.483 619.2 946.8



For the whole month only one tdump file consist of the full 7 days trajectories, and the # of the day is arbitrary. For example, i'm running September 2014 and only September 4th has the full data.
I'm still pazzled how to solve this issue.

[barbara.stunder]

There is an output file MESSAGE that is written. Unfortunately with the 'run daily' for each trajectory it is over-written. If the last trajectory is not 7 days, look at the MESSAGE file since there may be an error message.

Try running the case you show the output for - 12z Sept. 5 2014 - manually and see if it works.