SUEWS parameter database

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Evergreen trees · leaf area index — Evergreen Tree, LaiEq = 0evetr evidence record

lai.lai_power.growth_lai0.03
lai.lai_power.growth_gdd0.0005
lai.lai_power.senescence_lai0.03
lai.lai_power.senescence_sdd0.0005
laievetrgenericgenericJärvi 2011

Parameters

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

lai.lai_power.growth_lai0.03
lai.lai_power.growth_gdd0.0005
lai.lai_power.senescence_lai0.03
lai.lai_power.senescence_sdd0.0005
lai.lai_type0

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: Section 2.2, Leaf area index, p. 221

Where: Equation 4, dynamic daily LAI response to GDD and SDD, p. 221

Defines both branches for every vegetation type i using LAI exponent 0.03 and multiplier 5 x 10^-4; no Vancouver-specific derivation is stated.

Assessment findings

Namesupported
The name identifies the evergreen-tree instance of the paper's dynamic LAI equation selected by lai_type 0.
Targetsupported
Equation 4 defines daily LAI change for each vegetation surface type, including evergreen trees.
Valuessupported
Equation 4 uses LAI to the power 0.03 and a 5 x 10^-4 degree-day multiplier in both the growth and senescence branches, exactly matching all four stored coefficients.
Sourcesupported
Järvi et al. directly publish the complete dynamic LAI equation and do not attribute these exact exponents or multipliers to an earlier source.
Placesupported
Generic is appropriate because the equation is defined for every vegetation type in SUEWS; Vancouver is one evaluation location, not the origin of the coefficients.
Representativenesssupported
The paper presents a general model method rather than a Vancouver observation or city fit.
Methodsupported
The database transcribes a published model equation, so literature is the supported record-level method.
Identitysupported
The record contains one complete equation-0 coefficient set for the evergreen-tree target; identical coefficients for other vegetation targets reflect the equation's general definition.

Scientific note

The active place and representativeness now describe the generic SUEWS equation directly published by Järvi et al. The stable Vancouver path and origin preserve migration and evaluation context; the equation coefficients, target, source and legacy identity remain unchanged.

Model-ready fragment

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

lai:
  lai_power:
    growth_lai:
      value: 0.03
      ref:
        ID: jarvi2011
        DOI: 10.1016/j.jhydrol.2011.10.001
        desc: generic, generic
    growth_gdd:
      value: 0.0005
      ref:
        ID: jarvi2011
        DOI: 10.1016/j.jhydrol.2011.10.001
        desc: generic, generic
    senescence_lai:
      value: 0.03
      ref:
        ID: jarvi2011
        DOI: 10.1016/j.jhydrol.2011.10.001
        desc: generic, generic
    senescence_sdd:
      value: 0.0005
      ref:
        ID: jarvi2011
        DOI: 10.1016/j.jhydrol.2011.10.001
        desc: generic, generic
  lai_type:
    value: 0
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic

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

Placegeneric
Scopegeneric
Targetland_cover.evetr · docs
Origin“Vancouver” (verbatim legacy string)
Schema2026.5 · legacy row 32240004

Same study, same place

+18 more
all 27 sets from jarvi2011 at generic →
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