Answers to Exercises from Session 3
These are the answers to the exercises from the previous page. Feel free to ask a MET representative if you have any questions!
ANSWER 3.1: accum_3hr - Build a 3 Hour Accumulation Instead of 6
Instructions: Modify the METplus configuration files to build a 3 hour accumulation instead of a 6 hour accumulation from forecast data using pcp_combine in the HREF MEAN vs. MRMS QPE example. Then compare 3 hour accumulations in the forecast and observation data with grid_stat.
Answer: In the mycustom.accum_3hr.conf param file, change the following variables in the [config] section:
Change:
To:
and
Change:
To:
ANSWER 3.2: input_1hr - Force pcp_combine to only use 1 hour accumulation files
Instructions: Modify the METplus configuration files to force pcp_combine to use six 1 hour accumulation files instead of one 6 hour accumulation file of observation data in the PHPT vs. StageIV GRIB example.
Answer: In the mycustom.input_1hr.conf param file, add the following variable to the [config] section:
