Names follow the SUEWS YAML specification; click one for its definition in the configuration reference.
a1 | 0.23 |
a2 | 0.325 |
a3 | -16.91 |
Where: Section 4.4, seasonal adjustment of OHM coefficients, p. 15
Where: Table 4, pre-adjustment vegetation coefficients, p. 13
Where: SUEWS v2016a SUEWS_OHMCoefficients.txt, codes 201 and 2011 and multiplier notes
The article supplies the calculation rationale; the versioned companion table supplies the exact result.
Where: Figure 8, seasonal-coefficient and constant-coefficient model results, p. 14
This is application and validation at London and Swindon, not the observation source for the triplet.
The matching database record preserves Ward's pre-adjustment code 201 input set.
| Name | supported The companion table identifies code 2011 as code 201 multiplied for summer, with a2 unchanged. |
|---|---|
| Target | supported Ward et al. define these three values as coefficients in the OHM storage-heat equation. |
| Values | supported The exact code 2011 triplet 0.230, 0.325, -16.91 matches the stored values. |
| Source | supported Ward et al. state the seasonal scaling and the companion v2016a table publishes the exact result. |
| Place | not applicable |
| Representativeness | not applicable |
| Applicable Scale | supported Equation 6 weights the coefficients for each surface type by its surface cover fraction, and Table 4 lists the shared tuple for EveTr, DecTr and Grass, so this summer tuple describes vegetation land-cover classes before neighborhood aggregation. |
| Method | supported The database adopts Ward's published output; Ward's authors produced it by scaling the compiled vegetation-only code rather than by a new observation or regression. |
| Identity | supported The code, surface grouping and Summer season label agree with the v2016a table. |
Ward et al. compile the pre-adjustment vegetation coefficients from earlier studies, then calculate seasonal a1 and a3 values using Anandakumar-derived multipliers. Their London and Swindon runs validate/apply the coefficients but are not their observation input.
Paste under ohm_coefficients in a SUEWS YAML configuration; every value carries its citation.
a1:
value: 0.23
ref:
ID: ward2016
DOI: 10.1016/j.uclim.2016.05.001
desc: land_cover
a2:
value: 0.325
ref:
ID: ward2016
DOI: 10.1016/j.uclim.2016.05.001
desc: land_cover
a3:
value: -16.91
ref:
ID: ward2016
DOI: 10.1016/j.uclim.2016.05.001
desc: land_cover
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Review procedureohm_coefficients · docs