2 WRF-ARW v3.6.* coupled with SSiB v3.0 land-surface model
5 The SSiB v3.0 is a land-surface model with a multi-layer snow scheme.
10 To run WRF-ARW with SSIB v3.0, set sf_surface_physics to 8
12 Currently, the SSIB will only work with the following options:
13 1) SW and LW radiation schemes: 1 or 3
14 2) Surface layer schemes: 1
16 4) Eta levels: the first level above ground must be equal or smaller than 0.982,
17 to guarantee that the lowest layer is deep enough for SSIB.
18 For example, for an e_vert=28 domain, the eta_levels may be set to:
19 eta_levels = 1.000, 0.982, 0.973, 0.964, 0.946,
20 0.922, 0.894, 0.860, 0.817, 0.766,
21 0.707, 0.644, 0.576, 0.507, 0.444,
22 0.380, 0.324, 0.273, 0.228, 0.188,
23 0.152, 0.121, 0.093, 0.069, 0.048,
25 5) num_soil_layers = 3
26 6) fractional_seaice = 1
28 Since version 3.6.1, SSiB also provides 10-meter wind speed (U10 and V10) outputs.
33 By default, SSiB will work with either USGS and MODIS land-use/vegetation maps, however, for better results, we suggest that you use the SSiB 12-type vegetation maps.
34 These files are available in the WPS_GEOG directory.
36 This can be done by prefixing the variable geog_data_res with the string "ssib_+", according to the desired resolution.
38 For instance, to use the SSiB 10-minute resolution vegetation map, enter:
39 geog_data_res = 'ssib_10m+10m'
41 Or to use the 5-minute resolution vegetation map, enter:
42 geog_data_res = 'ssib_5m+5m'
44 Only 10-minute and 5-minute maps are currently available.
46 SSiB vegetation classification:
49 2 broadleaf deciduous trees
50 3 broadleaf and needleaf trees
51 4 needleaf evergreen trees
52 5 needleaf deciduous trees
53 6 broadleaf trees with ground cover
55 8 broadleaf shrubs with ground cover
56 9 broadleaf shrubs with bare soil
57 10 dwarf trees with ground cover
63 For further assistance please contact Dr. Yongkang Xue (yxue@geog.ucla.edu) or Dr. Fernando De Sales (fsales@geog.ucla.edu)