Regarding output of gdas1 trajectory output

[junyanl]

If I select all the all the extra information(Pressure, relative humidty, specific humidity, sun_flux etc), I will get 22 columns in my output file. I can understand what most of them are. But can anyone let me know what the three columns between 'hour' and 'lat' are for? And I'm curious, since gdas1 file contains information about u- and v- wind speed. Why doesn't the output include these information?
Please let me know, Thank you!

[barbara.stunder]

For a description of the output trajectory file (tdump), see
https://www.ready.noaa.gov/hypub/trajinfo.html#FORMAT

The trajectory implies the u and v components along the trajectory. We didn't choose that variable as one of the ones to output as a diagnostic variable.

[yaqiang]

The meteoroogical variable data along the trajectoies can be extracted from gridded meteorological dataset according the positions of the trajectory endpoints. Here is an example MeteoInfoLab script: http://www.meteothink.org/examples/mete ... _data.html .