TLA-185 → Canada CSSB climate disclosure concept crosswalk

Maps open specification field identifiers to Canadian CSSB / ISSB climate disclosure concepts using the same structural slots as the Australian AASB S2 and UK IFRS S2 crosswalks — with ECCC and Canadian climate-service bindings documented in provenance fields.

Concept mapping only — not legal or assurance advice. Verify current CSA / CSSB guidance before client delivery.

Maps Foundation open TLA-185 field identifiers to commonly encountered Canadian climate disclosure concepts (CSSB / ISSB IFRS S2 alignment path) for procurement and assurance review.

Layer	Owner	Licence
TLA-185 field dictionary (`tla185-fields.json`)	The Landscape Archive Foundation	CC BY-NC-ND 4.0
Climate evidence exports & jurisdiction joins	The Landscape Archive Pty Ltd	EULA / commercial terms

This document is a concept crosswalk only. It does not grant access to Archive datasets, satisfy Canadian statutory filing obligations, or constitute legal or assurance advice.

Applies to: Canadian Sustainability Standards Board (CSSB) climate-related disclosure concepts aligned with ISSB IFRS S2 — verify current CSA / CSSB guidance before client delivery.

Scope — stated plainly

Canadian climate disclosure under the CSSB / ISSB path is climate-focused. TLA-185 provides screening-grade, site-level environmental metadata with provenance — useful for physical-risk and resilience narratives inside Strategy and Risk management disclosures, not as a substitute for entity GHG inventories or financial quantification.

Australian-origin screening fields (SILO, CCIA) illustrate the structural slots in the open dictionary. Canadian implementers bind the same slots to ECCC climate normals, regional climate services, and flood / wildfire planning products through published jurisdiction packs — without inventing parallel field names.

Coverage legend

Label	Meaning
Supporting input	Fields can supply defensible, traceable inputs to the named disclosure area when used with entity governance and professional judgement.
Adjacent — not a substitute	Related metrics exist but must not be presented as the core climate metric.
Out of scope	Satisfied outside landscape metadata (governance process, finance, transition-risk analysis).
Jurisdiction pack	Same TLA-185 field ID; local dataset binding documented in provenance fields.

Requirement-by-requirement mapping

Source field IDs refer to tla185-fields.json v1.0.0. See the field registry for jsonPath and module detail.

Disclosure area	CSSB / ISSB location	Coverage	TLA-185 field IDs	Notes
Physical risk — acute (heat, wildfire)	Strategy · climate-related physical risks	Supporting input	185-180, 185-181, 185-094, 185-183, 185-184, 185-185	Heat-stress and wildfire-overlay screening at the site point. Jurisdiction pack: Canadian Forest Service / provincial wildfire danger and ECCC extreme-heat products replace Australian CCIA bushfire proxies. Screening only.
Physical risk — chronic (drought, aridity)	Strategy · climate-related physical risks	Supporting input	185-179, 185-093, 185-048, 185-043	Rainfall-trend and aridity screening. Jurisdiction pack: ECCC climate normals and drought indicators.
Scenario analysis	Strategy · climate resilience	Supporting input	185-176, 185-177, 185-178, 185-182	Projection scenarios use the IPCC SSP set commonly referenced in IFRS S2-style resilience narratives. Canadian downscaled products map here via provenance.
Resilience & adaptation measures	Strategy · climate resilience	Supporting input	185-098, 185-099, 185-095	SuDS / WSUD, native-planting %, and climate-positive flags can evidence adaptation narrative when linked to project decisions.
Assets / activities vulnerable to physical risk	Metrics & targets · cross-industry	Supporting input	185-110, 185-111, 185-112, 185-091, 185-089, 185-090	Asset register plus site-context exposure. Flood screening may reference provincial / municipal floodplain products in jurisdiction packs.
Risk-management process & audit trail	Risk management · identify / assess / monitor	Supporting input	185-052, 185-053, 185-182, 185-101, 185-102, 185-103	Strongest alignment. Provenance, evidence, and method references make physical-risk inputs traceable.
GHG emissions (Scope 1 / 2 / 3)	Metrics & targets · core metric	Adjacent — not a substitute	185-096, 185-097	Sequestration and embodied-carbon fields are not a Scope 1/2/3 inventory.
Governance	Governance	Out of scope	—	Entity governance disclosures.
Transition risk	Strategy · transition risks	Out of scope	—	Outside landscape metadata.

Canada jurisdiction pack — dataset bindings (illustrative)

These bindings populate the same TLA-185 field IDs. They are documented in 185-052 (dataSource), 185-053 (methodNote), and 185-182 (screeningDisclaimer) — not as alternate schema forks.

TLA-185 slot	Australian default (reference)	Canada illustrative binding
Projection deltas (185-179, 185-180, 185-181)	SILO / CCIA mid-century bands	Canadian Centre for Climate Services / CMIP-aligned regional projections
Heat stress (185-094, 185-183)	CCIA heat-stress overlay	ECCC extreme-heat / humidex products; climate normals
Wildfire overlay (185-184, 185-185)	CCIA bushfire proxy	Canadian Forest Fire Weather Index / provincial wildfire danger (planning-grade)
Köppen / rainfall bands (185-048, 185-043)	SILO 1990–2020 climatology	ECCC 1991–2020 climate normals
Flood exposure (asset context)	Local planning overlays	Provincial / municipal floodplain mapping (method note required)
Drought / aridity (185-093)	SILO rainfall trend	ECCC drought monitoring products

Honesty

Starter jurisdiction pack bindings only. Does not open a Canadian Archive hub, CAD checkout, or trademark claims. Not for sale as a cleared Canadian flora library.