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Data analysis

Added by Khumo Monaka about 5 years ago

Greetings all,

I just successfully ran RegCM4.6.1 now i have outputs and want to perform different statistical analysis to it. My main parameter is Precipitation. I have many outputs (monthly data) with different timesteps.
1. I want to merge all the months from July 2016 to June 2017 and also have 1 timestep.
2. I tried using mergetime, yearsum and timsum commands but i feel they is something I am not doing right because i still get a Map with almost no rainfall.

Kindly assit as to how I can approach this. I have attached a png of how my output looks. Basically i used mergetime to merge months from July 2016 to june 2017, then i used splitname to extract precipitation only, then i used timsum and lastly multiplied with a constant 86400 to get mm/day

I am lost as i have been working on data analysis for over a year without any progress.


Replies (4)

RE: Data analysis - Added by Karin Meier-Fleischer about 5 years ago

Hi Khumo,

without the data I would guess there is less precipitation. Take a look a the single files to get more information about the data values. If you need more help upload some data

-Karin

RE: Data analysis - Added by Khumo Monaka about 5 years ago

I have also attached the namelist for my model simulation

BotsV1.in (3.46 KB) BotsV1.in

RE: Data analysis - Added by Karin Meier-Fleischer about 5 years ago

Hi Khumo,

the data values are correct after merging the files using the operator mergetime

cdo -O mergetime Southern_Africa_*.nc STS_merged.nc

I've plotted the variable pr of the file Southern_Africa_STS.2015090100.nc 1st time step and the 32nd time step of the merged file and it looks good to me.

Plot of original data file Southern_Africa_STS.2015090100.nc and timestep 32 of merge data files
-Karin

plot_test.png (68.2 KB) plot_test.png Plot of original data file Southern_Africa_STS.2015090100.nc and timestep 32 of merge data files
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