Normalized Difference Water Index (NDWI)
This index can be used to determine and characterize agricultural drought hazard. (source WMO and GWP, 2016)
Simple
- Date (Publication)
- Date
- Presentation form
- Digital map
- Purpose
-
Mapping agricultural drought hazard
- Credit
-
N/A
- Maintenance and update frequency
- Daily
- Update scope
- Indices
- Theme
-
-
Type: Indices
-
Type of Drought: Agricultural Drought
-
Application: Mapping agricultural drought hazard
-
Extent: Not relevant
-
- Use limitation
-
Satellite information in the various channels of the near-infrared spectrum.
- Access constraints
- Intellectual property rights
- Use constraints
- Other restrictions
- Date
- Spatial representation type
- Vector
Spatial resolution
- Distance
- Aggregation period: N/A
- Distance
- Spatial scale: Not relevant
Spatial resolution
- Metadata language
-
eng
- Description
-
Not relevant
))
- Begin date
- Not relevant
- End date
- Not relevant
- Date (Revision)
- Reference system identifier
- EPSG / Spatial_reference / 7.9
- Distribution format
-
-
(
Various
)
-
(
Various
)
- OnLine resource
- http://www.droughtmanagement.info/indices/
- Hierarchy level
- Series
- Description
-
Not relevant
Temporal Extent
Vertical extent
- Dataset
-
Mapping agricultural drought hazard
Non quantitative attribute accuracy
- Measure description
-
N/A
- Evaluation Method
- Direct internal
Conformance result
- Date (Revision)
- Pass
Conformance result
- Date
Completeness omission
- Name of measure
-
Codelist omission
- Evaluation Method
- Direct internal
Conformance result
- Date (Revision)
- Pass
- Statement
-
Data requirements to use: Satellite information in the various channels of the near-infrared spectrum.;
Data used: N/A;
Data format: N/A;
Data access: N/A;
Concise description:
Very similar to the NDVI methodology, but uses the near-infrared channel to monitor the water content of the vegetation canopy. Changes in the vegetation canopy are used to identify periods of drought stress.
- File identifier
- 5fd44c53-f8fb-46fa-9cb7-c63fbae8c129 XML
- Metadata language
-
eng
- Character set
- UTF8
- Hierarchy level
- Indices
- Hierarchy level name
-
Normalized Difference Water Index (NDWI)
- Date stamp
- 2022-02-07T11:04:47
- Metadata standard name
-
ISO 19115:2003/19139
- Metadata standard version
-
1.0
- Dataset URI
Overviews
Spatial extent
Provided by
