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13 landuse categories are related roughness length
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landuse comment z0
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1 Urban land 0.7
2 Agricultural land 0.1
3 Range land 0.1
4 Deciduous forest 1.
5 Coniferous forest 1.
6 Mixed forest including wetland 0.7
7 water, both salt and fresh 0.001
8 barren land mostly desert 0.01
9 nonforested wetland 0.1
10 mixed agricultural and range land 0.1
11 rocky open areas with low grow shrubs 0.05
12 snow and ice 0.001
13 rainforest 1.
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