Deciduous trees · drainage · SUEWS parameter database

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Deciduous trees · drainagedectr evidence record

storage_drain_params.drain_eq2

storage_drain_params.drain_coef_10.013

storage_drain_params.drain_coef_21.71

wet_threshold0.8

drainage dectr generic generic Land-cover class Järvi 2011

Parameters

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

`storage_drain_params.drain_eq`	2
`storage_drain_params.drain_coef_1`	0.013
`storage_drain_params.drain_coef_2`	1.71
`wet_threshold`	0.8

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(a), Decid. trees column, p. 223

Gives Si = 0.3–0.8 mm, D0,i = 0.013 mm and b = 1.71 for deciduous trees. The stored wet threshold is the published upper limit.

Where: Section 2.5, Equations 18 and 19, p. 224

Assigns the exponential drainage form to unirrigated vegetation and states that the maximum rates and coefficients are taken from the literature in Table 2.

SUEWS v2016a release workbook: SUEWS_SiteInfo18_Lo.xlsmLater compilation

Where: SUEWS_Veg, London DecTr row 11, cells A11:AF11

The row labels the surface DecTr and origin London and repeats wet threshold 0.8, drainage equation 2, D0 0.013 and b 1.71. The workbook bytes have SHA-256 e1a34632b0ab6b1aa379b8329a92ee584d130f54941c3d9eeca3e3303cde1d42.

The release artifact preserves the London application and migrated-row identity; it does not make the generic literature tuple a London measurement.

Assessment findings

Name	supported Järvi et al. identify the surface category as Decid. trees, while the later release workbook labels the matching row DecTr. The active name removes the unsupported sample-run qualifier without changing the stable path or legacy identity.
Target	supported Table 2(a) publishes the values by SUEWS surface type, including Decid. trees.
Values	supported The Decid. trees column gives an upper storage threshold of 0.8 mm, maximum drainage rate 0.013 mm and coefficient 1.71. Section 2.5 assigns unirrigated vegetation the exponential drainage equation, matching the stored equation choice and coefficients. The later London release row repeats the complete stored tuple unchanged.
Source	supported Järvi et al. publish the complete stored deciduous-tree drainage tuple. The v2016a workbook is later application and migration-lineage evidence, not a London measurement or fit.
Place	supported Järvi et al. present the values by generic surface type, not as London observations. London is retained only in origin and the stable path because the later release workbook applies the tuple in its London DecTr row. issue #306
Representativeness	supported Generic scope reflects a literature parameter set offered for the SUEWS deciduous-tree class, without a city- or site-specific determination.
Applicable Scale	supported Table 2(a) defines the tuple for the Decid. trees land-cover class rather than for a whole neighbourhood, an individual plant, or a material specimen.
Method	supported Section 2.5 states that the maximum drainage rates and coefficients are taken from the literature, and Table 2(a) footnotes the values to earlier publications.
Identity	supported The stable path, origin London and legacy ID preserve the migrated row identity. The v2016a SUEWS_Veg London DecTr row repeats the exact values and equation selector.

Scientific note

Järvi et al. publish this tuple as a generic SUEWS deciduous-tree land-cover parameter set assembled from literature. The later v2016a workbook applies the unchanged tuple in its London DecTr row. London therefore remains as stable-path and origin lineage, while active place and representativeness describe the generic evidence. No parameter, target, source, legacy identity, origin or record path has 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: 2
    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