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How
to deal with missing observational data?
Assume:
- You have a REGRID_DOMAIN1 file containing analysis data every
6 hours, from 2000-01-24_00 to 2000-01-26_00
- You do not plan on creating the SFCFDDA_DOMAIN1 file
- You have surface and upper-air data in files called obs:*
- Your obs:* files are only available for every 12 hours.
Problem:
- Since your REGRID_DOMAIN1 file contain data for every 6 hours,
you MUST set "interval" to 21600 (6 hours).
- This will require the obs_filesname files to be available
every 6 hours.
Solution:
- Set up the little_r namelist.input file as if you have obs
data every 6 hours
- Create EMPTY obs:* files for the missing times
- Run LITTLE_R as per normal - when LITTLE_R gets to the missing
times, it will open the empty file, notice there is no data
and simple move to the nest time period.
&record1
start_year
= 2000
start_month
= 01
start_day
= 24
start_hour
= 00
end_year
= 2000
end_month
= 01
end_day
= 26
end_hour
= 00
interval
= 21600/
&record2
fg_filename
= '../REGRID/regridder/REGRID_DOMAIN1'
obs_filename
= './obs:2000-01-24_00'
'./obs:2000-01-24_06'
'./obs:2000-01-24_12'
'./obs:2000-01-24_18'
'./obs:2000-01-25_00'
'./obs:2000-01-25_06'
'./obs:2000-01-25_12'
'./obs:2000-01-25_18'
'./obs:2000-01-26_00'
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