Product catalogue
RETIRED Water Observations from Space Statistics 25m 2.1.5
<b>This record was retired 29/03/2022 with approval from S.Oliver as it has been superseded by eCat 146091 Geoscience Australia Landsat Water Observation Statistics Collection 3</b>
WOfS-STATS (WO_STATS_2.1.5) is a set of statistical summaries of the water observations contained in WOfS (WO_2.1.5). The layers available are: the count of clear observations;the count of wet observations;the percentage of wet observations over time.
This product is Water Observations from Space - Statistics (WO-STATS), a set of statistical summaries of the WOfS product that combines the many years of WOfS observations into summary products that help the understanding of surface water across Australia.
WO-STATS consists of the following datasets:
Clear Count: how many times an area could be clearly seen (ie. not affected by clouds, shadows or other satellite observation problems),
Wet Count: how many times water was detected inobservations that were clear,
Water Summary: what percentage of clear observations were detected as wet (ie. the ration of wet to clear as a percentage)
As no confidence filtering is applied to this product, it is affected by noise where misclassifications have occurred in the WOfS water classifications, and hence can be difficult to interpret on its own. The confidence layer and filtered summary are contained in the WO-Fil-STATS product, which provide a noise-reduced view of the water summary.
WO-STATS is available in multiple forms, depending on the length of time over which the statistics are calculated. At present the following are available:
WO-STATS: statistics calculated from the full depth of time series (1986 to present)
WO-STATS-ANNUAL: statistics calculated from each calendar year (1986 to present)
WO-STATS-NOV-MAR: statistics calculated yearly from November to March (1986 to present)
WO-STATS-APR-OCT: statistics calculated yearly from April to October (1986 to present)
Simple
Identification info
- Date (Publication)
- 2017-05-09T06:05:43
- Date (Revision)
- 2019-01-18T03:29:48
- Date (Superseded)
- 2022-03-29
- Edition
-
2.1.5
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/121074
- Cited responsible party
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Role Organisation / Individual Name Details Owner Commonwealth of Australia (Geoscience Australia)
Voice
- Status
- Superseded
- Point of contact
-
Role Organisation / Individual Name Details Owner Commonwealth of Australia (Geoscience Australia)
Voice Custodian Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Geoscience Australia - Team Leader, Applications and Systems Support, NEMO
Voice Point of contact Geoscience Australia - Section Leader, Operations Section, NEMO
Voice Point of contact Geoscience Australia - Team Leader, Applications and Systems Support, NEMO
Voice Point of contact Geoscience Australia - Team Leader, Applications and Systems Support, NEMO
Voice Point of contact Geoscience Australia - GA Media Hotline
Voice Point of contact Geoscience Australia - Team Leader, Product Management, Operations Section NEMO
Voice Point of contact Geoscience Australia - Team Leader, Business Systems Development Section, NEMO
Voice
- Topic category
-
- Geoscientific information
Extent
))
Temporal extent
- Time period
- 2019-01-15
- Maintenance and update frequency
- As needed
Resource format
- Title
-
Product data repository: Various Formats
- Website
-
Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- Theme
-
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thematic data
-
- Theme
-
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water
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- Theme
-
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remote sensing
-
- Theme
-
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Landsat 5
-
- Theme
-
-
Landsat 7
-
- Theme
-
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Landsat 8
-
- Theme
-
-
flood
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- Keywords
-
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Published_External
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Resource constraints
- Title
-
Creative Commons Attribution 4.0 International Licence
- Alternate title
-
CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
-
Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
-
Geoscience Australia Landsat Water Observation Statistics Collection 3
Geoscience Australia Landsat Water Observation Statistics Collection 3
- Distribution format
-
Resource lineage
- Statement
-
The WOfS productis a key component of the National Flood Risk Information Portal (NFRIP), developed by GA. The objective of Water Observations from Space is to analyse GA's historic archive of satellite imagery to derive water observations, to help understand where flooding may have occurred in the past. The collection of many hundred thousand WOFLs that make up WOfS are too cumbersome to display easily. WO_STATS provides the mechanism to present and deliver WOfS in a moreeasily digestible form, and provides understanding of water in the landscape.
WO-STATS is created from the WOfS water classification (WO_25_2.1.5).Every pixel location in WO_25_2.1.5is analysed statistically to derive the count of clear observations, the count of clear-wet observations and then calculate the percentage of clear observations that were also wet. This provides a 'normalised'water frequency product for all of Australia.
basic_htmlThe WOfS product is a key component of the National Flood Risk Information Portal (NFRIP), developed by GA. The objective of Water Observations from Space is to analyse GA's historic archive of satellite imagery to derive water observations, to help understand where flooding may have occurred in the past. The collection of many hundred thousand WOFLs that make up WOfS are too cumbersome to display easily. WO_STATS provides the mechanism to present and deliver WOfS in a more easily digestible form, and provides understanding of water in the landscape.
WO-STATS is created from the WOfS water classification (WO_25_2.1.5). Every pixel location in WO_25_2.1.5 is analysed statistically to derive the count of clear observations, the count of clear-wet observations and then calculate the percentage of clear observations that were also wet. This provides a 'normalised' water frequency product for all of Australia.
- Hierarchy level
- Dataset
- Description
-
Please refer to the lineage section.
Metadata constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/1e59f8fb-3bb6-4c6c-af23-ea856bdb2588
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Point of contact Geoscience Australia - Client Services
Voice
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/121074
- Date info (Revision)
- 2019-01-15T09:35:56
- Date info (Creation)
- 2019-01-15T09:35:56
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
-
ISO 19115-3
- Title
-
Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
-
Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551