Embedded Files
idea
change the bubbles num in init condition
change the shape of the bubbles (not in a line)
modify the perturbation of potential temperature
modify the nz value in init_squall subroutine
bubbles num
bubbles num
control(num9)
control(num9)
t = 135min, max = 63.29
t = 180min, max = 62.06
bubbles num
bubbles num
num=7
num=7
t = 135min, max = 61.33
t = 180min, max = 63.39
bubbles num
bubbles num
num=11
num=11
t = 135min, max = 63.32
t = 180min, max = 62.77
squall line shape(control)
squall line shape(control)
t = 135min, max = 63.29
t = 180min, max = 62.06
squall line shape(V-right)
squall line shape(V-right)
t = 135min, max = 63.10
t = 180min, max = 64.27
squall line shape(V-left)
squall line shape(V-left)
t = 135min, max = 61.84
t = 180min, max = 62.19
pt_pert
pt_pert
(control)
(control)
t = 135min, max = 63.29
t = 180min, max = 62.06
pt_pert
pt_pert
(3->4)
(3->4)
t = 135min, max = 63.29
t = 180min, max = 62.06
pt_pert
pt_pert
(3->2)
(3->2)
t = 135min, max = 63.29
t = 180min, max = 62.06
nz value determines the equator profile
nz value determines the equator profile
init_squall
init_squall
profile eq
profile eq
(control nz=40)
(control nz=40)
set pert_dpt = 0 K
init_squall
init_squall
profile eq
profile eq
(control nz=30)
(control nz=30)
set pert_dpt = 0 K
nz=40, h=5000
nz=40, h=5000
nz=30, h=5000
nz=30, h=5000
SUMMARY
The bubble number has an impact on the squall line center region during 90~135min
The shape of the initial perturbation can influence the early structure of the squall line, but ultimately, the formation of the bow echo is determined by the background wind direction.
The initial temperature perturbation varies by about 1°C, which has a negligible impact.
Nz value shows importance in initialization subroutine, the value of nz has a greater impact on the simulation of the upper atmosphere.
Future plan
do high-res simulation
try more smooth shape of init pt_pert
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