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Grass · albedo — Grassland/herbaceousgrass evidence record

alb_min0.19
alb_max0.19
albedograssgenericgenericVargo 2013

Parameters

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

alb_min0.19
alb_max0.19

Provenance evidence

Awaiting sign-off

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

The importance of land cover change across urban–rural typologies for climate modelingParameter source

Where: Table 1, land-cover classes and WRF-equivalent constants, p. 247

The Grassland/herbaceous row gives albedo 0.19 and makes no irrigation distinction.

Where: Section 2, Material and methods, p. 245

Defines the three metropolitan study regions as Atlanta, Philadelphia and Phoenix; Helsinki is not a study region.

Assessment findings

Namesupported
Grassland/herbaceous is the land-cover subclass attached to albedo 0.19 in Vargo et al. Table 1.
Targetsupported
The cited value is the albedo assigned to a grassland/herbaceous land-cover class.
Valuessupported
Vargo et al. Table 1 gives Grassland/herbaceous an albedo of 0.19, exactly matching both stored bounds.
Sourcesupported
Vargo et al. is the publication that states the stored 0.19 value and identifies it as a WRF-equivalent land-cover constant.
issue #365 · issue #366
Placesupported
Generic is appropriate because the value is a WRF-equivalent land-cover constant; the paper studies Atlanta, Philadelphia and Phoenix and provides no Helsinki determination.
Representativenesssupported
Generic accurately describes a model land-cover constant that is not tied to a Helsinki site or city.
Methodsupported
The parameter is taken from a published model-parameter table, so literature is the supported method.
Identitysupported
The record contains one grassland/herbaceous albedo value corresponding to one table entry.

Scientific note

The stable path and origin preserve the legacy Helsinki import lineage, but Vargo et al. does not publish a Helsinki observation or application. Its Table 1 supplies 0.19 as the WRF-equivalent albedo constant for grassland/herbaceous land cover without an irrigation classification. The active place, representativeness and method therefore describe generic literature evidence while the stable path remains unchanged.

Model-ready fragment

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

alb_min:
  value: 0.19
  ref:
    ID: vargo2013
    DOI: 10.1016/j.jenvman.2012.10.007
    desc: generic, generic
alb_max:
  value: 0.19
  ref:
    ID: vargo2013
    DOI: 10.1016/j.jenvman.2012.10.007
    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.grass · docs
Origin“Helsinki” (verbatim legacy string)
Schema2026.5 · legacy row 41240029

Used by 6 typologies

Same study, same place

all 3 sets from vargo2013 at generic →
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