Vertical nesting with WRF3.8

Discuss the nesting capability within the model itself and any problems you might have run into.

Vertical nesting with WRF3.8

Postby jsrodrigo » Tue Apr 12, 2016 11:31 pm

Hi,
I've been trying to use vertical nesting with WRFv3.8. I could make it work with two domains following the example in README.namelist. However I haven't figure out how to make it work with more than one nest. In particular, I have a set of 3 telescopic nests and I would like to apply refinement at the third one, keeping the first two with the same initial vertical levels of the parent domain.

Here is a subset of my namelist file with my interpretation of the vertical nesting, which doesn't work when I run real.exe:

&domains
time_step = 180,
max_dom = 4,
e_we = 61, 61, 61, 61,
e_sn = 61, 61, 61, 61,
e_vert = 51, 51, 51, 101,
vert_refine_method = 0, 0, 0, 2,
eta_levels(1:51) = 1.00000, 0.99646, 0.99292, 0.98940,
0.98589, 0.98239, 0.97890, 0.97542,
0.97195, 0.96849, 0.96503, 0.96159,
0.95816, 0.95474, 0.95124, 0.94754,
0.94349, 0.93892, 0.93368, 0.92765,
0.92070, 0.91269, 0.90345, 0.89283,
0.88063, 0.86664, 0.85063, 0.83234,
0.81150, 0.78785, 0.76108, 0.73091,
0.69707, 0.65933, 0.61751, 0.57160,
0.52187, 0.46918, 0.41520, 0.36220,
0.31231, 0.26657, 0.22487, 0.18686,
0.15222, 0.12063, 0.09184, 0.06560,
0.04168, 0.01988, 0.00000
eta_levels(52:153) = 1.00000, 0.99823, 0.99646, 0.99469,
0.99292, 0.99116, 0.98940, 0.98764,
0.98589, 0.98414, 0.98239, 0.98064,
0.97890, 0.97716, 0.97542, 0.97368,
0.97195, 0.97021, 0.96849, 0.96676,
0.96503, 0.96331, 0.96159, 0.95988,
0.95816, 0.95645, 0.95474, 0.95300,
0.95124, 0.94942, 0.94754, 0.94557,
0.94349, 0.94128, 0.93892, 0.93639,
0.93368, 0.93078, 0.92765, 0.92430,
0.92070, 0.91684, 0.91269, 0.90823,
0.90345, 0.89833, 0.89283, 0.88694,
0.88063, 0.87387, 0.86664, 0.85890,
0.85063, 0.84178, 0.83234, 0.82226,
0.81150, 0.80005, 0.78785, 0.77487,
0.76108, 0.74644, 0.73091, 0.71447,
0.69707, 0.67870, 0.65933, 0.63894,
0.61751, 0.59506, 0.57160, 0.54717,
0.52187, 0.49581, 0.46918, 0.44221,
0.41520, 0.38843, 0.36220, 0.33677,
0.31231, 0.28892, 0.26657, 0.24524,
0.22487, 0.20543, 0.18686, 0.16914,
0.15222, 0.13606, 0.12063, 0.10591,
0.09184, 0.07842, 0.06560, 0.05336,
0.04168, 0.03053, 0.01988, 0.00971,
0.00000
I get the following error:
...
d02 2006-06-30_12:00:00 module_initialize_real: using vert_refine_method=2,
reading in eta_levels from namelist.input
-------------- FATAL CALLED ---------------
FATAL CALLED FROM FILE: <stdin> LINE: 1454
--- ERROR: the last specified eta_level is not 0.0

However, if I use just one nest it works:
max_dom = 2,
e_we = 61, 61,
e_sn = 61, 61,
e_vert = 51, 101,
vert_refine_method = 0, 2,

Thanks!
jsrodrigo
 
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