Plot variables from WRF-NetCDF

Question

Emanuel Valdes 2019-3-18

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/450639-plot-variables-from-wrf-netcdf

评论： Philip Anderson 2024-11-1，19:52

I'm trying to plot the variable T2 (temperature at 2meters) from my netCDF file, made in Weather Research and Forecasting (WRF) Model. I was following the example of this video: https://www.youtube.com/watch?v=PJurb-IPKM8

Here is my code:

filename = 'wrfout_d03_2018-06-01_00';
ncdisp(filename);
temp = ncread (filename,'T2');
lat = ncread (filename,'XLAT');
lon = ncread (filename,'XLONG');
mapin = pcolor(lon,lat,temp')
load coast
hold on
plot(long,lat,'k','LineWidth',1.5)
plot(long+360,lat,'k','LineWidth',1.5)

The problem is that my variables have 3 dimensions instead of 2. Is there any way of get latitude and longitude from variables XLAT and XLONG?

You can download the netCDF file here: https://drive.google.com/open?id=1qKv5pTho3g9WwcNrkpDebSmvRJntGzxj

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Emanuel Valdes 2019-3-18

编辑：Emanuel Valdes 2019-3-18

Sorry, I'm not getting your question. T2 it's temperature at 2 meters of height. I guess this is my problem:

https://gis.stackexchange.com/questions/120900/plotting-netcdf-file-using-lat-and-lon-contained-in-variables

Philip Anderson 2024-11-1，19:52

Look at the size of "temp" (and lat etc): likely something like 195x285x8 . The last dimension (x8) are 8 consecutive records, spaced at ~10 minute apart. lat and long don't actually change, and you can pick just one of the T2 records, (e.g. 1st) then use

temp2D = squeeze(temp(:,:,1));

lat2D = squeeze(lat(:,:,1));

etc.

Apologies for my clunky Matlab.

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