dan_lipsa@kitware_com
Member
Hi all,Is it possible to output fields on tape 8 once a month instead of once a year (to shorten the simulation)?Thank you very much
output fields on tape 8 once a month
- Thread starter dan_lipsa@kitware_com
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Hi Dan,Pleae could you be a little bit more specific. Are trying to output fields for atmosphere, ocean, and... ? Are you talking about the restart files ?Instructions about changing the output frequency of the history files can be found in:http://www.cesm.ucar.edu/events/tutorials/081114/practical4-hannay.pdf
Hi Dan,Pleae could you be a little bit more specific. Are trying to output fields for atmosphere, ocean, and... ? Are you talking about the restart files ?Instructions about changing the output frequency of the history files can be found in:http://www.cesm.ucar.edu/events/tutorials/081114/practical4-hannay.pdf
dan_lipsa@kitware_com
Member
Hi,Thank you for your answer.I am trying to output fields for atmosphere (cam 5.3) in the history file. Thank you for the link. Indeed, I was able to change output fields frequency for tape 1 (from yearly to daily) as shown in the slides.However, I don't seem to find the right namelist for changing output for tape 8 from yearly to monthly.Thank you,
dan_lipsa@kitware_com
Member
Hi,Thank you for your answer.I am trying to output fields for atmosphere (cam 5.3) in the history file. Thank you for the link. Indeed, I was able to change output fields frequency for tape 1 (from yearly to daily) as shown in the slides.However, I don't seem to find the right namelist for changing output for tape 8 from yearly to monthly.Thank you,
You can output a maximum of 6 history files. You won't be able to able "tape 8". About teh output frequency, only the first tape (the *h0* files) can be output monthly by setting nhtfrq =0
For the other tapes you need to specify number of hours (or timesteps). For nhtfrq: see documentation at: http://www.cesm.ucar.edu/cgi-bin/eaton/namelist/nldef2html-pub
Array of write frequencies for each history file series.
If nhtfrq(1) = 0, the file will be a monthly average.
Only the first file series may be a monthly average. If
nhtfrq(i) > 0, frequency is specified as number of
timesteps. If nhtfrq(i) < 0, frequency is specified
as number of hours.
Default: 0,-24,-24,-24,-24,-24
For the other tapes you need to specify number of hours (or timesteps). For nhtfrq: see documentation at: http://www.cesm.ucar.edu/cgi-bin/eaton/namelist/nldef2html-pub
Array of write frequencies for each history file series.
If nhtfrq(1) = 0, the file will be a monthly average.
Only the first file series may be a monthly average. If
nhtfrq(i) > 0, frequency is specified as number of
timesteps. If nhtfrq(i) < 0, frequency is specified
as number of hours.
Default: 0,-24,-24,-24,-24,-24
You can output a maximum of 6 history files. You won't be able to able "tape 8". About teh output frequency, only the first tape (the *h0* files) can be output monthly by setting nhtfrq =0
For the other tapes you need to specify number of hours (or timesteps). For nhtfrq: see documentation at: http://www.cesm.ucar.edu/cgi-bin/eaton/namelist/nldef2html-pub
Array of write frequencies for each history file series.
If nhtfrq(1) = 0, the file will be a monthly average.
Only the first file series may be a monthly average. If
nhtfrq(i) > 0, frequency is specified as number of
timesteps. If nhtfrq(i) < 0, frequency is specified
as number of hours.
Default: 0,-24,-24,-24,-24,-24
For the other tapes you need to specify number of hours (or timesteps). For nhtfrq: see documentation at: http://www.cesm.ucar.edu/cgi-bin/eaton/namelist/nldef2html-pub
Array of write frequencies for each history file series.
If nhtfrq(1) = 0, the file will be a monthly average.
Only the first file series may be a monthly average. If
nhtfrq(i) > 0, frequency is specified as number of
timesteps. If nhtfrq(i) < 0, frequency is specified
as number of hours.
Default: 0,-24,-24,-24,-24,-24
dan_lipsa@kitware_com
Member
I see. I did notice that those frequencies have 6 fields. I guess I was confused by the following entries in the log file produced when cam is run: FLDLST: History file 8 contains 37 fields | Write frequency: YEARLY (INITIAL CONDITIONS) | Filename specifier: %c.cam.i.%y-%m-%d-%s.nc | Output precision: double | Number of time samples per file: 1 | Then, it goes on to list all the fields. Does this mean that to see those fields, I have to include them on the first tape (or on other ones)?Thank you,
dan_lipsa@kitware_com
Member
I see. I did notice that those frequencies have 6 fields. I guess I was confused by the following entries in the log file produced when cam is run: FLDLST: History file 8 contains 37 fields | Write frequency: YEARLY (INITIAL CONDITIONS) | Filename specifier: %c.cam.i.%y-%m-%d-%s.nc | Output precision: double | Number of time samples per file: 1 | Then, it goes on to list all the fields. Does this mean that to see those fields, I have to include them on the first tape (or on other ones)?Thank you,
Sorry for the confusion. The fact that the initial file is implemented internally as a history file with some special properties is not supposed to be visible to the user. The 'sathist' file is another case of this where internally it uses a lot of the history file code, but it has special properties and a separate set of namelist variables to control it. Back to the initial file, the control of its output frequency is via the inithist namelist variable.
Sorry for the confusion. The fact that the initial file is implemented internally as a history file with some special properties is not supposed to be visible to the user. The 'sathist' file is another case of this where internally it uses a lot of the history file code, but it has special properties and a separate set of namelist variables to control it. Back to the initial file, the control of its output frequency is via the inithist namelist variable.
dan_lipsa@kitware_com
Member
Dear hannay and eaton,Thank you very much for the clarifications.Best regards,
dan_lipsa@kitware_com
Member
Dear hannay and eaton,Thank you very much for the clarifications.Best regards,