Names follow the SUEWS YAML specification; click one for its definition in the configuration reference.
a1 | 0.477 |
a2 | 0.337 |
a3 | -33.87 |
Where: Table 4, Rooftop rows for Vancouver, Uppsala and Kyoto, p. 932
The table gives the three exact parameter-labelled input rows, and the surrounding text states that coefficients within each surface category are averaged.
Where: Table 4, Bldgs row before adjustment for seasonal variation, p. 13
Where: Section 4.4, mean of values from three sites for building surfaces, p. 14
Where: SUEWS v2016a SUEWS_OHMCoefficients.txt, code 798
The article publishes the rounded building mean and describes its three-site calculation; the versioned companion table preserves the exact legacy tuple and code.
| Name | supported Both publications describe a rooftop or building-surface average; neither supports the removed claim that this exact tuple was published in Grimmond et al. (1992). |
|---|---|
| Target | supported Both sources identify a1, a2 and a3 as OHM coefficients. |
| Values | supported The component-wise mean of 0.17/0.10/-17.0, 0.44/0.57/-28.9 and 0.82/0.34/-55.7 is 0.476666.../0.336666.../-33.866666..., which gives the stored 0.477/0.337/-33.87 after rounding. |
| Source | not applicable This is an internal calculation from source-table inputs. Keeping source unreferenced avoids attributing the higher-precision calculated tuple to either publication. |
| Place | not applicable |
| Representativeness | not applicable |
| Applicable Scale | supported Grimmond and Oke group all three inputs under the physical surface category Rooftop. |
| Method | supported Grimmond and Oke state that coefficients within each surface category are averaged, and Ward et al. explicitly say that the building coefficients use the mean of values from three sites. |
| Identity | supported The versioned SUEWS v2016a table identifies the unchanged tuple as legacy code 798. |
arithmetic_mean · a1 = (yap-vancouver-a1 + taesler-uppsala-a1 + yoshida-kyoto-a1) / 3; a2 = (yap-vancouver-a2 + taesler-uppsala-a2 + yoshida-kyoto-a2) / 3; a3 = (yap-vancouver-a3 + taesler-uppsala-a3 + yoshida-kyoto-a3) / 3
The stable legacy code 798 record is a component-wise arithmetic mean of three rooftop rows, not a parameter tuple published by Grimmond et al. (1992). The source remains unreferenced because the exact stored precision is calculated; the sidecar records the source-table inputs without creating artificial atomic model records.
Paste under ohm_coefficients in a SUEWS YAML configuration; every value carries its citation.
a1:
value: 0.477
ref:
ID: unreferenced
DOI: null
desc: facet
a2:
value: 0.337
ref:
ID: unreferenced
DOI: null
desc: facet
a3:
value: -33.87
ref:
ID: unreferenced
DOI: null
desc: facet
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Review procedureohm_coefficients · docs