SUEWS parameter database

curated values, linked and searchable, a citation on every one Home · Map · suews.io
browse · records/ohm/generic--unreferenced--water.yml

OHM coefficients — Water (shallow - turbid) [60] evidence record

a10.5
a20.21
a3-39.1
ohmLand-cover classGrimmond 1999

Parameters

Names follow the SUEWS YAML specification; click one for its definition in the configuration reference.

a10.5
a20.21
a3-39.1

Provenance evidence

Awaiting sign-off

Fitted · assessed by provenance-audit · 2026-08-24. Agent assessment is evidence preparation, not human verification.

Heat storage in Urban Areas: Local-Scale Observations and Evaluation of a Simple ModelParameter source

Where: Table 4, Water — shallow turbid, p. 932

States 0.50, 0.21 h and -39.1 W m-2 and identifies Souch et al. as input data.

Where: Section 7(a), paragraph following Table 4, p. 932

States that the surface coefficients were derived from published data.

Assessment findings

Namesupported
Targetsupported
Valuessupported
Sourcesupported
Placenot applicable
Representativenessnot applicable
Applicable Scalesupported
Section 7(a) identifies water as an individual surface type whose coefficients are weighted by its share of total area to calculate site-specific OHM coefficients, and Table 4 lists this tuple for Water—shallow turbid. The tuple therefore describes the water land-cover class before neighborhood aggregation.
Methodsupported
Identitysupported

Scientific note

Grimmond and Oke (1999) is the canonical parameter publication; Souch et al. supplied the observation input. The sidecar preserves the role distinction without attributing the fitted coefficients to Souch. Section 7(a) establishes that the published tuple applies to the individual water surface type before surface-fraction weighting into a site-specific OHM coefficient, so its applicable scale is the land-cover class.

Model-ready fragment

Paste under ohm_coefficients in a SUEWS YAML configuration; every value carries its citation.

a1:
  value: 0.5
  ref:
    ID: grimmond1999
    DOI: 10.1175/1520-0450(1999)038<0922:HSIUAL>2.0.CO;2
    desc: land_cover
a2:
  value: 0.21
  ref:
    ID: grimmond1999
    DOI: 10.1175/1520-0450(1999)038<0922:HSIUAL>2.0.CO;2
    desc: land_cover
a3:
  value: -39.1
  ref:
    ID: grimmond1999
    DOI: 10.1175/1520-0450(1999)038<0922:HSIUAL>2.0.CO;2
    desc: land_cover

Evidence review

Awaiting sign-offSign off evidence on GitHub

Raises a prefilled sign-off issue. CI accepts it only when the issue author is in the verifier registry and the evidence revision is still current.

Review procedure

Record metadata

Applicable scaleLand-cover class
Targetohm_coefficients · docs
Schema2026.5 · legacy row 50240013
Report an issue