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WRF ARW User's Guide - MMM - UCAR

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<strong>WRF</strong>-VAR<br />

warnings_are_fatal false<br />

clude HTML tags.<br />

.true.: warning messages that would normally allow<br />

the program to continue are treated as fatal errors.<br />

&wrfvar10 ; for code developer<br />

&wrfvar11<br />

cv_options_hum 1 do not change<br />

check_rh 2 0 --> No supersaturation check after minimization.<br />

1 --> supersaturation (rh> 100%) and minimum rh<br />

(rh supersaturation (rh> 95%) and minimum rh<br />

(rh 1surface observations will be assimilated<br />

based on the lowest model level first guess. Observations<br />

are not used when the height difference of<br />

the elevation of the observing<br />

site and the lowest model level height is larger<br />

than 100m.<br />

2 --> surface observations will be assimilated<br />

based on surface similarity theory in PBL. Innovations<br />

are computed based on 10-m wind, 2-m temperature<br />

and 2-m moisture.<br />

calculate_cg_cost_fn false the purpose of calculate_cg_cost_fn is changed.<br />

use print_detail_grad=.true. to dump cost function<br />

and gradient of each iteration to cost_fn and<br />

grad_fn. conjugate gradient algorithm does not require<br />

the computation of cost function at every iteration<br />

during minimization..true.: cost function is<br />

printed out and is directly derived from the gradient<br />

using the fully linear properties inside the innerloop..false.:<br />

Only the initial and final cost functions<br />

are computed<br />

lat_stats_option<br />

&wrfvar12<br />

false do not change<br />

balance_type<br />

&wrfvar13<br />

1 obsolete<br />

vert_corr 2 do not change<br />

vertical_ip 0 obsolete<br />

vert_evalue 1 do not change<br />

max_vert_var1 99.0 specify the maximum truncation value (in percentage)<br />

to explain the variance of stream function in<br />

<strong>WRF</strong>-<strong>ARW</strong> V3: User’s <strong>Guide</strong> 6-45

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