SUEWS parameter database

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Grass · leaf area indexgrass evidence record

lai.lai_type1
lai.lai_min1.6
lai.lai_max5.9
laigrassgenericgenericLand-cover classJärvi 2011

Parameters

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

lai.lai_type1
lai.lai_min1.6
lai.lai_max5.9

Provenance evidence

Awaiting sign-off

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

The Surface Urban Energy and Water Balance Scheme (SUEWS): Evaluation in Los Angeles and Vancouver.Parameter source

Where: Table 2(b), LAImax,grass and LAImin,grass rows, p. 223

Publishes the exact grass LAI maximum 5.9 and minimum 1.6 among the general model run parameters.

Surface Urban Energy and Water Balance Scheme (SUEWS): Development and evaluation at two UK sitesValidation

Where: Section 2, Model developments, p. 4

Documents that SUEWS_v2016a combines the former irrigated and non-irrigated grass types into one grass surface, with irrigation represented separately.

Surface Urban Energy and Water Balance Scheme (SUEWS): Development and evaluation at two UK sitesValidation

Where: Section 4.1, Seasonal cycle of vegetation phenology, p. 7

Evaluates the daily LAI seasonal cycle using vegetation photographs from Swindon and London; it reports reasonable timing overall but full leaf-out slightly too early and suddenly, without publishing new grass LAI minimum or maximum bounds.

Assessment findings

Namesupported
Ward et al. (2016) documents the v2016a consolidation of irrigated and non-irrigated grass into one grass surface, so the plain Grass label matches the active SUEWS land-cover class.
Targetsupported
Järvi et al. (2011) publishes the LAI bounds as grass surface-type parameters, and Ward et al. (2016) documents the later single grass land-cover class.
Valuessupported
Järvi et al. (2011) publishes the exact grass LAI minimum 1.6 and maximum 5.9. Ward et al. (2016) later evaluates the active daily LAI phenology at the two UK sites; it does not originate replacement bounds.
Sourcesupported
Järvi et al. (2011) is the checked publication that states the exact stored bounds. Ward et al. (2016) is later UK application and phenology-evaluation evidence, not the parameter source for a London-specific fit.
issue #112
Placesupported
The exact bounds are published as shared model parameters rather than observations from SE England. Ward et al. (2016) applies and evaluates the phenology in London and Swindon but does not establish a UK origin for the bounds, so generic is the supported active evidence scope.
Representativenesssupported
The evidence supports reusable model defaults subsequently applied at two UK sites, not a regional survey or London fit; generic therefore states how far the bounds travel without converting migration origin into scientific provenance.
Applicable Scalesupported
Both papers assign the parameters to the SUEWS grass surface class, which is a sub-grid land-cover class rather than a whole-neighborhood aggregate, facet or material specimen.
Methodsupported
The record adopts exact values from a published model parameter table without fitting or recalculating them, so literature is the applicable method.
Identitysupported
The stable SE England path, origin and legacy ID preserve migration lineage. The corrected name, source and generic scope describe the active evidence without presenting the bounds as a London-specific record.

Scientific note

Järvi et al. (2011) Table 2 is the checked publication for the exact 1.6 and 5.9 grass LAI bounds. Ward et al. (2016) later applies the model at London and Swindon, documents the single v2016a grass surface, and evaluates UK phenology; it does not make the unchanged bounds a London fit. The active evidence fields are therefore generic and literature-based, while the stable path, SE England origin and legacy ID retain the record's migration history.

Model-ready fragment

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

lai:
  lai_type:
    value: 1
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
  lai_min:
    value: 1.6
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
  lai_max:
    value: 5.9
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover

Evidence review

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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

Placegeneric
Scopegeneric
Applicable scaleLand-cover class
Targetland_cover.grass · docs
Origin“SE England” (verbatim legacy string)
Schema2026.5 · legacy row 31240046

Used by 3 typologies

Same study, same place

+18 more
all 27 sets from jarvi2011 at generic →
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