SUEWS parameter database

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Grass · leaf area indexgrass evidence record

lai.lai_type1
lai.lai_min1.6
lai.lai_max3
laigrasszurichcityStagakis S. 2025

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_max3

Provenance evidence

Awaiting sign-off

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

Intercomparison of biogenic CO2 flux models in four urban parks in the city of ZurichParameter source

Where: Supplement Table S3, SUEWS Lawn column, p. 3

Gives LAImax,i = 3 and LAImin,i = 1.6 for Lawn in the table of parameters used by SUEWS.

Where: Table A1, SUEWS phenology row, p. 2155

Shows SUEWS calculating daily LAI internally from GDD and SDD while clamping it to LAImax and LAImin, which supports the record's lai_type 1 selector.

Where: Sections 2.1 and 2.5, Zurich parks and model comparison, p. 2136, 2142

Identifies four public parks in Zurich and states that their lawn simulations are assumed representative of vegetation in the central 2 km by 2 km domain.

CO2 uptake of urban vegetation in a warming Nordic cityInput observations

Where: Appendix B, Table B.1, Grass column, p. 10

Gives Helsinki Grass LAImin = 1.6 and LAImax = 5.9. Stagakis Table S3 cites Havu et al. across the LAI rows, but the earlier paper does not contain the Zurich maximum 3 and is therefore not substituted as the exact parameter source.

Evaluation of the Surface Urban Energy and Water balance Scheme (SUEWS) at a dense urban site in Shanghai: Sensitivity to anthropogenic heat and irrigationValidation

Where: Table 1, Shanghai Grass LAI, p. 1987

Gives Grass LAImax = 5.9 and LAImin = 3.2 for the Xujiahui Shanghai site, not the stored Zurich pair. The following model-setup text says only that 3.2 was increased from the earlier 1.6.

SUEWS database pre-migration workbook: database.xlsxLater compilation

Where: Pre-migration Leaf Area Index row 31240022

Preserves Grass, origin Zurich, LAIEq 1, LAIMin 1.6, LAIMax 3 and Ref 90240064. This is compilation history and does not make Ao et al. scientific evidence for the tuple.

Assessment findings

Namesupported
Grass is the SUEWS land-cover class used for the Zurich park lawns in the parameter table.
Targetsupported
Supplement Table S3 labels these as parameters used by the SUEWS model and its Lawn column corresponds to the grass land-cover target.
Valuessupported
Supplement Table S3 gives the exact Lawn pair LAImin 1.6 and LAImax 3. Table A1 shows SUEWS internally calculating seasonal LAI between those bounds, supporting lai_type 1. Havu et al. publish the same minimum but a 5.9 maximum for Helsinki, so their earlier table does not independently support the Zurich pair.
Sourcesupported
Stagakis et al. is the directly checked publication that prints the exact SUEWS lawn values for the Zurich study. Ao et al. publish a Shanghai grass pair of 3.2 and 5.9, while the legacy row's Ao reference preserves only compilation history. source_legacy_ref retains that former link without continuing to export Ao as the parameter source.
issue #356
Placesupported
The study applies the SUEWS lawn parameters to four public parks in Zurich, Switzerland.
issue #357
Representativenesssupported
The same parameter set is used across four Zurich parks, and the study scales their lawn simulations to a central 2 km by 2 km city domain under an explicit representativeness assumption.
issue #357
Methodsupported
Literature records adoption of the exact SUEWS lawn tuple printed in the study supplement; the database performs no new fit or calculation.
Identitysupported
The publication establishes the Zurich SUEWS lawn tuple, while legacy row 31240022 preserves its migrated Grass, Zurich and LAI-equation identity. The stable path, origin and legacy ID remain unchanged for traceability.

Scientific note

Stagakis et al. Supplement Table S3 is the exact Zurich-study publication lineage for the stored SUEWS lawn tuple: LAImin 1.6 and LAImax 3. Its Table A1 shows the internal SUEWS LAI calculation bounded by those values. Havu et al. (2024), which the supplement cites across the LAI rows, instead publish 1.6 and 5.9 for Helsinki grass; Ao et al. (2018) publish 3.2 and 5.9 for Shanghai and only mention 1.6 as an earlier minimum. The record therefore cites Stagakis et al. as the exact parameter publication. The pre-migration row remains compilation evidence, and source_legacy_ref 90240064 preserves its former Ao link without presenting that link as scientific support. No value, stable path, origin, place, representativeness or legacy ID changes.

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: stagakis-s2024
      DOI: 10.5194/bg-22-2133-2025
      desc: zurich, city
  lai_min:
    value: 1.6
    ref:
      ID: stagakis-s2024
      DOI: 10.5194/bg-22-2133-2025
      desc: zurich, city
  lai_max:
    value: 3
    ref:
      ID: stagakis-s2024
      DOI: 10.5194/bg-22-2133-2025
      desc: zurich, city

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

Placezurich
Scopecity
Targetland_cover.grass · docs
Origin“Zurich” (verbatim legacy string)
Schema2026.5 · legacy row 31240022

Used by 1 typology

Same study, same place

all 7 sets from stagakis-s2024 at zurich →
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