SUEWS parameter database

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Deciduous trees · drainagedectr evidence record

storage_drain_params.drain_eq3
storage_drain_params.drain_coef_10.013
storage_drain_params.drain_coef_21.71
wet_threshold0.8
drainagedectrgenericgenericLand-cover classJärvi 2011

Parameters

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

storage_drain_params.drain_eq3
storage_drain_params.drain_coef_10.013
storage_drain_params.drain_coef_21.71
wet_threshold0.8

Provenance evidence

Awaiting sign-off

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

Plant parameter values for models in Temperate climatesParameter source

Where: Table 7, deciduous forest interception capacity, p. 286

Reports Ic = 0.8 mm as the median of 30 deciduous-forest values; this is the exact upper storage value carried by the record, not a London or Havu measurement.

Gamma Ray Attenuation Studies of Interception From Sitka Spruce: Some Evidence for an Additional Transport MechanismParameter source

Where: Accepted manuscript Appendix 1, abstract and Eqs. 9 and 13

Fits D = 0.013(exp(1.71 C) - 1) mm h-1 to Sitka-spruce canopy-storage measurements. This is the original source of both coefficients, not a deciduous measurement; the later deciduous assignment is located separately.

An evapotranspiration-interception model for urban areasLater compilation

Where: Sections 3.6 and 3.7, Drainage and Storage Capacity, p. 1744

Defines the exponential vegetation drainage equation, points its coefficients upstream to Calder and Wright, and describes storage capacity as literature-based and seasonally variable for deciduous vegetation.

Where: Table 2 and following storage-capacity text, Deciduous column, p. 1745

Assigns D0 = 0.013 and b = 1.71 to deciduous vegetation and states 0.3 mm when leafless and 0.8 mm when in leaf, explicitly establishing the stored upper value and cross-surface coefficient transfer.

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

Where: Table 2(a), Deciduous Trees column, p. 223

Compiles Si = 0.3-0.8 mm, D0 = 0.013 and b = 1.71 for deciduous trees. Its storage footnote points to Breuer and its D0 footnote to Grimmond and Oke (1991), but the b-row footnote to Grimmond et al. (1986) is contradicted by that paper's full text; Calder and Wright fitted b with D0.

Where: Equation 18, unirrigated vegetation drainage, p. 224

Defines the exponential drainage form used by the equation selector and states that maximum rates and coefficients come from the literature.

CO2 uptake of urban vegetation in a warming Nordic cityLater compilation

Where: Input_rcp.zip/Input_rcp/SUEWS_Veg.txt, rows 831–834

The Helsinki forest, street and two park deciduous rows each carry WetThreshold 0.8, DrainageEq 3, DrainageCoef1 0.013 and DrainageCoef2 1.71, demonstrating later Helsinki application rather than original parameter derivation.

Assessment findings

Namesupported
Deciduous Tree identifies the SUEWS surface class without presenting later application cities as parameter origins.
Targetsupported
Breuer's storage summary is specifically deciduous, while Grimmond and Oke explicitly transfer the Calder-Wright drainage fit to the deciduous urban-model surface. Järvi and Havu retain that deciduous assignment, matching land_cover.dectr without assuming the conifer classification applies.
Valuessupported
Breuer et al. report 0.8 mm as the median of 30 deciduous-forest interception capacities. Calder and Wright fit D = 0.013(exp(1.71 C) - 1) to Sitka-spruce measurements; Grimmond and Oke then explicitly assign D0 0.013 and b 1.71 to deciduous vegetation and state 0.8 mm for in-leaf deciduous trees. Järvi assemble the exact stored upper-limit tuple, and Havu reproduce it unchanged.
Sourcesupported
Järvi et al. are the immediate publication of the complete SUEWS tuple carried by the record's single source field. The evidence list keeps the original deciduous storage summary, original conifer drainage fit, explicit urban-model transfer to deciduous vegetation, and Havu application distinct. Järvi's b-row footnote to Grimmond et al. (1986) is unsupported by that full text.
Placesupported
The active tuple is a literature default assembled for the deciduous surface class rather than a London, Helsinki, Zurich or Beijing determination, so generic is the supported evidence place. Origin London preserves the migrated row lineage.
issue #231
Representativenesssupported
Generic reach describes a compiled literature default reused across cities, not a city-wide determination. The sidecar exposes that the drainage coefficients were fitted to Sitka spruce and later assigned to deciduous vegetation instead of presenting them as deciduous measurements.
issue #231
Applicable Scalesupported
The publications assign the tuple to the deciduous-tree surface type, establishing land-cover-class scale rather than neighborhood, facet or material scale.
Methodsupported
Literature accurately describes adoption of previously published storage and drainage values; this record performs no new fit.
Identitysupported
The stable path, origin, target, source, legacy ID and all four values preserve the migrated record identity while the active name and scope now describe the evidence rather than applications.

Scientific note

The active record is a generic deciduous-tree literature tuple. Breuer et al. provide the 0.8 mm deciduous median. Calder and Wright originally fit D0 = 0.013 and b = 1.71 to Sitka-spruce canopy data; Grimmond and Oke explicitly transfer those coefficients to deciduous vegetation and define 0.8 mm as the in-leaf storage capacity. Järvi compile the complete deciduous SUEWS tuple, and Havu later apply it in Helsinki. Järvi's b-row footnote to Grimmond et al. (1986) is unsupported. The stable path and origin retain migration lineage; no value, source key, target or legacy identity changed.

Model-ready fragment

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

storage_drain_params:
  drain_eq:
    value: 3
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
  drain_coef_1:
    value: 0.013
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
  drain_coef_2:
    value: 1.71
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
wet_threshold:
  value: 0.8
  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.dectr · docs
Origin“London” (verbatim legacy string)
Schema2026.5 · legacy row 45240062

Same study, same place

+18 more
all 27 sets from jarvi2011 at generic →
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