Glossary

Key terms used throughout AtlasCore documentation, ordered alphabetically.

Term	Definition
AASB S2	Australian Accounting Standards Board Standard S2 — Climate-related Financial Disclosures. Mandatory for Australian entities from 2025.
ABN	Australian Business Number — 11-digit unique identifier for Australian entities. Primary key for entity resolution.
ABR	Australian Business Register — government register of ABN holders. Used for entity data and resolution.
ACCU	Australian Carbon Credit Unit — tradeable carbon offset unit issued under the Emissions Reduction Fund. Registry data used for market-based evidence cross-validation.
AEMO	Australian Energy Market Operator. Source of NEM grid emission intensity data (CDEII).
ANZSIC	Australian and New Zealand Standard Industrial Classification. Used for sector classification derived from CER NGER self-reported industry codes.
AR5 / AR6	IPCC Assessment Report 5 / 6. Define Global Warming Potential (GWP) values for greenhouse gases. NGA uses AR5 natively; AR6 transforms available on request.
BOM SILO	Bureau of Meteorology Scientific Information for Land Owners — gridded climate data at ~5km resolution.
CAGR	Compound Annual Growth Rate — used in emissions trend analysis to express multi-year emission trajectory.
CDEII	Carbon Dioxide Equivalent Intensity Index — AEMO's measure of grid emission intensity.
CER	Clean Energy Regulator — administers NGER, ACCU, and LGC registries.
CMIP6	Coupled Model Intercomparison Project Phase 6 — climate model ensemble used for scenario projections (RCP 2.6/4.5/8.5).
CO2-e	Carbon dioxide equivalent — standardised unit expressing the climate impact of all greenhouse gases relative to CO2.
Connector	Stateless source adapter that extracts data from a government API, spreadsheet, or database. Layer 1 of the architecture.
Dataset	A normalised, versioned collection of records from one upstream source. Identified by a globally unique slug.
Dataset slug	Unique identifier following {jurisdiction}_{provider}_{content} convention — e.g. au_dcceew_nga_emission_factors.
DCCEEW	Department of Climate Change, Energy, the Environment and Water. Publishes the NGA Factors Workbook.
Disclosure bundle	Seven-file evidence package (JSON, PDF, XLSX, Markdown, provenance, checksums, ZIP) generated for AASB S2 reporting.
Emission factor	Coefficient converting an activity (e.g. kWh consumed) to greenhouse gas emissions (e.g. kg CO2-e).
Entity resolution	Process of linking records across different government sources to the same real-world entity (e.g. CER NGER corporation to ABR entity).
Evidence hash	SHA-256 hash of canonical data inputs. Enables deterministic verification that outputs haven't changed.
Filing readiness	AASB S2 progress tracking across four disclosure pillars (Governance, Strategy, Risk Management, Metrics and Targets). Not a legal sufficiency determination.
GHG Protocol	Greenhouse Gas Protocol — international standard defining Scope 1, 2, and 3 emission categories.
GNAF	Geocoded National Address File — 15.9 million geocoded Australian addresses.
GreenPower	Australian government program accrediting renewable electricity products.
GWP	Global Warming Potential — measure of how much heat a greenhouse gas traps relative to CO2 over a given time period.
IFRS S2	International equivalent of AASB S2, issued by the ISSB. AASB S2 is aligned with IFRS S2.
ISSA 5000	International Standard on Sustainability Assurance Engagements 5000. Governs assurance of sustainability reports.
LGC	Large-scale Generation Certificate — tradeable certificate representing 1 MWh of eligible renewable electricity generation. Registry data used for market-based evidence cross-validation.
NEM	National Electricity Market — covers NSW, VIC, QLD, SA, and TAS. Grid regions: NSW1, VIC1, QLD1, SA1, TAS1.
NGA	National Greenhouse Accounts — the framework for Australia's greenhouse gas emissions reporting.
NGER	National Greenhouse and Energy Reporting — mandatory Australian scheme for corporate emissions reporting.
Pack	Vertical product layer that consumes datasets. Defines business rules, report templates, and acceptance suites.
Provenance	Record of where data came from, which versions were used, and how it was transformed.
Safeguard Mechanism	Australian regulatory mechanism requiring large emitters to keep emissions below a baseline. Coverage status is included in company climate profiles.
Scope 1	Direct emissions from sources owned or controlled by the reporting entity.
Scope 2	Indirect emissions from the generation of purchased electricity, steam, heating, or cooling.
Scope 3	All other indirect emissions in the value chain — upstream and downstream. AtlasCore provides reference factors plus indicative screening-grade estimates.
Sector benchmark	Statistical comparison of a company's Scope 1+2 emissions against ANZSIC sector peers. Includes percentile rank, sector median, P25/P75 quartiles.
Snapshot	One extraction run for one dataset. Versioned and quality-scored.
Splink	Probabilistic record linkage library used for entity resolution. Runs offline; results persisted to database.
SWIS	South West Interconnected System — Western Australian electricity grid separate from the NEM.
Tenant	An API consumer with bearer token authentication, pack entitlements, and usage quotas.
Transition risk	Risk arising from the transition to a lower-carbon economy. AtlasCore scores this from sector classification, Safeguard coverage, and emission benchmark position.