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time intervals of the obtained data from wrf output?

X

xinyuchen

New member
Can we obtain data at 10-minute intervals? I've noticed that the vast majority of scholars typically output results at hourly intervals. I've only come across one instance where the extract the simulation results of the WRF model every 10 min during the simulating process. How can we achieve that？
 
Code: 
history_interval

60

Frequency (in simulation minutes) that data are written/recorded to history output file(s) (wrfout_d0); can also use history_interval_d, history_interval_h, history_interval_m, history_interval_s, alternatively to set the frequency in days, hours, mins, secs, respectfully

max_dom

you would just need to change the interval to 10 from 60
 
I'm sorry, but as a beginner, I'm a bit confused. Does this mean that even if my input data has a 1-hour resolution, I can still get WRF output results with a 10-minute resolution? In other words, does this mean I can set the history_interval to 10? Is the output result's time scale limited to between 10 minutes and 60 minutes?
William.Hatheway said:
Code: 
history_interval

60

Frequency (in simulation minutes) that data are written/recorded to history output file(s) (wrfout_d0); can also use history_interval_d, history_interval_h, history_interval_m, history_interval_s, alternatively to set the frequency in days, hours, mins, secs, respectfully

max_dom

you would just need to change the interval to 10 from 60
Click to expand...
 
xinyuchen said:
I'm sorry, but as a beginner, I'm a bit confused. Does this mean that even if my input data has a 1-hour resolution, I can still get WRF output results with a 10-minute resolution? In other words, does this mean I can set the history_interval to 10? Is the output result's time scale limited to between 10 minutes and 60 minutes?
Click to expand...
correct, the input data can be 1hr but wrf will still output model data every 10 mins.

history_interval is how frequent the model will export it's data
 
Ming Chen said:
HI,
You can set history_interval_m = 10 to output history files at 10-min interval.
Click to expand...
I see, thank you very much! I have anther questions:
1、 Can the WRF model output the surface roughness length and friction velocity at each grid point in its results?
2、I came across a statement in an article that says, ‘50 vertical levels are arranged in the WRF model, and there are 12 levels within 200 m from the ground (10, 13, 16.9, 21.97, 28.56, 37.13, 48.27, 62.75, 81.57, 106.04, 137.86, and 179.22 m, respectively)’ ，However, I am only familiar with setting different pressure levels in the namelist.input file to obtain the corresponding output. How can I get the output for specific height above the ground?
 
Last edited:
xinyuchen said:
I see, thank you very much! I have anther questions:
1、 Can the WRF model output the surface roughness length and friction velocity at each grid point in its results?
2、I came across a statement in an article that says, ‘50 vertical levels are arranged in the WRF model, and there are 12 levels within 200 m from the ground (10, 13, 16.9, 21.97, 28.56, 37.13, 48.27, 62.75, 81.57, 106.04, 137.86, and 179.22 m, respectively)’ ，However, I am only familiar with setting different pressure levels in the namelist.input file to obtain the corresponding output. How can I get the output for specific height above the ground?
Click to expand...
tools link ncar command language (ncl) or wrf-python have ways to get data at specific heights, or you can modify the namelists
 
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