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AusEnHealth Excess Heat Factor Indicators

Regional extreme-heat indicators derived from Bureau of Meteorology Australian Gridded Climate Data daily mean temperature and the Bureau of Meteorology Excess Heat Factor method. Daily gridded classifications are coverage-weighted to 2021 ABS Boundaries using the BOM 10% district rule, then summarised to monthly and completed calendar-year products. The dataset comprises two products. Grids: the daily EHF and severity grids as annual Cloud Optimised GeoTIFF (COG) stacks with one band per day. Tables: long-format Parquet with columns region (ABS boundary code), date (period start) and obs_value, one file per indicator variable, hive-partitioned by variable (ehf_hot, ehf_low, ehf_severe, ehf_extreme, ehf_total, ehf_events, ehf_duration), region_type (sa1, sa2, sa3, sa4, gcc, lga), edition (the boundary code set, asgs2021 or lga2021), period (P1M, P1Y) and year. Geometries are not included in the tables, but can be obtained from the corresponding ASGS boundary files.

Simple

Date (Creation)
2026-10-06T00:46:53Z
Date (Publication)
2026-10-06
Status
On going
Point of contact
Role Organisation Electronic mail address
Point of contact

AusEnHealth

Spatial representation type
Text, table
Spatial representation type
Grid

Spatial resolution

Spatial resolution
0.05 deg
Temporal resolution
P1M
Topic category
  • Climatology, meteorology, atmosphere
  • Health

Extent

N
S
E
W




Geographic identifier
National

Temporal extent

Time period
2000-01-01 2025-12-31
Maintenance and update frequency
Monthly
Keywords
  • excess heat factor

  • heatwave

  • hot days

  • temperature

  • australia

Theme
  • Hot days

  • Low-intensity heatwave days

  • Severe heatwave days

  • Extreme heatwave days

  • Heatwave days of any intensity

  • Heatwave events

  • Mean heatwave event duration

  • Excess Heat Factor

  • Excess Heat Factor severity

Resource constraints

Access constraints
License
Other constraints
CC BY-NC 4.0
Dataset language
English
Country
AUS
Character encoding
UTF8
Attribute description
Dataset variables
Content type
Physical measurement
Name

ehf_hot

Type name

Real

Description

Days on which at least 10 per cent of the region's valid area had daily mean temperature (DMT) above the 1971-2000 95th percentile (DMT95). Scored independently of the heatwave classes and not part of ehf_total.

Name
Hot days

Maximum value
207.0
Minimum value
0.0
Identifier
d
Name
day
Name

ehf_low

Type name

Real

Description

Days on which at least 10 per cent of the region's valid area had positive Excess Heat Factor (EHF) severity, where the severe and extreme thresholds were not met.

Name
Low-intensity heatwave days

Maximum value
188.0
Minimum value
0.0
Identifier
d
Name
day
Name

ehf_severe

Type name

Real

Description

Days on which at least 10 per cent of the region's valid area had EHF severity of at least 1, where the extreme threshold was not met.

Name
Severe heatwave days

Maximum value
43.0
Minimum value
0.0
Identifier
d
Name
day
Name

ehf_extreme

Type name

Real

Description

Days on which at least 10 per cent of the region's valid area had EHF severity of at least 3.

Name
Extreme heatwave days

Maximum value
14.0
Minimum value
0.0
Identifier
d
Name
day
Name

ehf_total

Type name

Real

Description

Sum of the low-intensity, severe and extreme heatwave days.

Name
Heatwave days of any intensity

Maximum value
212.0
Minimum value
0.0
Identifier
d
Name
day
Name

ehf_events

Type name

Real

Description

Number of consecutive runs of low-intensity, severe or extreme heatwave days. An event crossing a period boundary counts in both periods, so monthly counts do not sum to the annual count.

Name
Heatwave events

Maximum value
28.0
Minimum value
0.0
Identifier
{events}
Name
events
Name

ehf_duration

Type name

Real

Description

Heatwave days of any intensity divided by the number of heatwave events, with an event crossing a period boundary split at the boundary. Zero when there are no events.

Name
Mean heatwave event duration

Maximum value
45.0
Minimum value
0.0
Identifier
d
Name
day
Name

ehf

Type name

Real

Description

Daily gridded EHF, dated to the first day of the forward three-day window: the three-day mean DMT above DMT95, multiplied by the larger of 1 and the three-day mean DMT above the preceding 30-day mean.

Name
Excess Heat Factor

Maximum value
150.035446
Minimum value
-129.041718
Identifier
Cel2
Name
degree Celsius squared
Name

ehf_severity

Type name

Real

Description

Daily gridded EHF divided by the 1958-2016 EHF 85th percentile (EHF85). Values above 0, from 1 and from 3 mark low-intensity, severe and extreme heatwave conditions.

Name
Excess Heat Factor severity

Maximum value
13.841331
Minimum value
-27.01609
Identifier
1
Name
dimensionless
Distribution format
  • GeoTIFF

  • Parquet

Digital transfer options

OnLine resource

Grids directory (52 GeoTIFF files)

OnLine resource

Tables directory (2184 Parquet files)

Statement

Derived from: ABS ASGS ABS Structures, ABS ASGS Non ABS Structures, BOM AGCD Climate Data.

Hierarchy level
Dataset
Source
  • ABS ASGS ABS Structures
  • ABS ASGS Non ABS Structures
  • BOM AGCD Climate Data
Maintenance and update frequency
Monthly
Maintenance note

This metadata record was generated by pygeometa-0.21.1 ( https://github.com/geopython/pygeometa)

Metadata

Metadata identifier
0c8647a0-aed7-5561-9e55-2bd953f3dbe2

Language
en
Character encoding
UTF8
Contact
Role Organisation Electronic mail address
Custodian

AusEnHealth

a11.price@qut.edu.au

Type of resource

Resource type
Dataset
Metadata linkage

https://geonetwork.ausenhealth.com.au/geonetwork/srv/api/records/0c8647a0-aed7-5561-9e55-2bd953f3dbe2?language=all

Date info (Creation)
2026-10-06T00:46:53Z
Date info (Revision)
2026-10-09T00:06:43.298598Z

Metadata standard

Title

ISO 19115-1:2014 Geographic information - Metadata - Part 1: Fundamentals

Edition

ISO 19115-1:2014/Amd 1:2018

 
 

Spatial extent

Keywords

Excess Heat Factor Excess Heat Factor severity Extreme heatwave days Heatwave days of any intensity Heatwave events Hot days Low-intensity heatwave days Mean heatwave event duration Severe heatwave days


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