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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 Dimensions of sample trees

From: In situ drag coefficient measurements for rooftop trees

No.

Species

H (m)

H D (m)

D (cm)

L c (m)

B c (m)

A c (m2)

A c-s (m2)

H w (m)

H w-s (m)

1

Norway spruce

4.70

0.77

15.4

4.36

2.33

5.437

5.079

2.182

1.793

2

Shirakanba

3.97

1.28

8.09

2.30

1.24

1.042

1.426

3.037

2.820

  1. H, tree height; H D, deflection sensor height; D, diameter at the deflection sensor height; L c, crown length; B c, crown breadth (north–south direction); A c, horizontal projected area of crown calculated from binarized image; A c-s, crown area calculated assuming a triangle crown for spruce and an diamond one for shirakanba; H w, height of wind pressure center estimated from gravity center of crown area, H w-s, wind pressure center height assuming a triangle crown for spruce and an diamond one for shirakanba
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