geoschem / GCHP

The "superproject" wrapper repository for GCHP, the high-performance instance of the GEOS-Chem chemical-transport model.
https://gchp.readthedocs.io
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Regarding the issue of Track File in HISTORY.rc #433

Closed helpyuan closed 3 months ago

helpyuan commented 3 months ago

Your name

liumy

Your affiliation

CAMS

Please provide a clear and concise description of your question or discussion topic.

Hi all,

I have been using track_file to sample the model results recently (https://gchp.readthedocs.io/en/dev/supplement/satellite-overpass.html#output-along-a-track).

# Question 1: GCHP has output the corresponding file, but there seems to be a slight issue with the latitude and longitude inside, as shown in the figure: image

The above result is to set rcycle_track to True (SpeciesSample.recycle_track: .true.). But when I set recycle_track to .false. (SpeciesSample.recycle_track: .false.), meaning I don't want to reuse a track_file (if I understand correctly), it seems that no sampling was done, and the output result is shown in the figure (time dimension is zero): image

So is this a bug? Or is there a problem with my track file? Here are my files: HISTORY.rc.txt trackfile_test_only_latlontime_20190701.txt

# Question 2: Following the above, when I set track_file to 'trackfile_test_only_latlontime_%y4%m2%d2.nc' and recycle_track to .false. , GCHP doesn't seem to be recognized. So I would like to ask if it is possible to read different track_file based on the date during a simulation process?

It seems that it is not possible to upload netCDF files here. If you need my track_file, I can provide it to you through email or other ways.