Palmer Hydrological Drought Index
The term "Palmer Drought Index" has been used collectively to represent multiple indices. This index is simply a water balance model which analyzes precipitation and temperature, and used as a tool to measure meteorological and hydrological drought across space and time. All versions of the index uses the Versatile Soil Moisture Budget to model the movement of water within the system, and a daily Priestly-Taylor model to estimate evapotranspiration. The Palmer Drought Index (PDI) uses monthly temperature and precipitation data to calculate a simple soil water balance. The index is a relative measure that typically ranges from -4 (extremely dry) to +4 (extremely wet) and represents how soil moisture availability differs from that expected for a given place and time of year. The PDI includes a "memory" component that considers past conditions and persistence of soil moisture surplus or deficit.
The Palmer Hydrological Drought Index (PHDI) is a specific version of the PDI that accounts for longer-term drought that reduces surface and groundwater supply.
Simple
- Date ( RI_367 )
- 2017-05-05
- Date ( RI_366 )
- 2017-05-05
- Presentation form
- mapDigital;carteNumérique RI_391
- Status
- completed; complété RI_593
- Maintenance and update frequency
- asNeeded; auBesoin RI_540
- Keywords ( RI_529 )
-
- PDI
- agclimate
- PHDI
- Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
-
- Farmlands
- Agriculture
- Crops
- Temperature
- Precipitation
- Use limitation
- Open Government Licence - Canada (http://open.canada.ca/en/open-government-licence-canada)
- Access constraints
- license; licence RI_606
- Use constraints
- license; licence RI_606
- Spatial representation type
- vector; vecteur RI_635
- Spatial representation type
- grid; grille RI_636
- Metadata language
- eng; CAN
- Topic category
-
- Climatology, meteorology, atmosphere
- Begin date
- 2012-09-03
))
- Reference system identifier
- http://www.epsg.org/ / EPSG:3857 / 8.3.4
- OnLine resource
-
Data Product Specification (English)
(
HTTPS
)
Supporting Document;PDF;eng
- OnLine resource
-
Palmer Drought Index
(
HTTPS
)
Web Service;WMS;zxx
- OnLine resource
-
Using AAFC Climate Services (French)
(
HTTPS
)
Supporting Document;PDF;fra
- OnLine resource
-
Data Product Specification (French)
(
HTTPS
)
Supporting Document;PDF;fra
- OnLine resource
-
Agroclimate Interactive Maps (English)
(
HTTPS
)
Application;HTML;eng
- OnLine resource
-
Agroclimate Interactive Maps (French)
(
HTTPS
)
Application;HTML;fra
- OnLine resource
-
Pre-packaged GeoTIF files (No linguistic component)
(
HTTPS
)
Dataset;GeoTIF;zxx
- OnLine resource
-
Using AAFC Climate Services (English)
(
HTTPS
)
Supporting Document;PDF;eng
- OnLine resource
-
Palmer Drought Index
(
ESRI REST: Image Service
)
Web Service;ESRI REST;zxx
- OnLine resource
-
Palmer Drought Index
(
ESRI REST: Image Service
)
Web Service;ESRI REST;zxx
- File identifier
- 35b4153e-593f-47aa-91c0-c2f706382079 XML
- Metadata language
- eng; CAN
- Character set
- utf8; utf8 RI_458
- Hierarchy level
- series; série RI_623
- Date stamp
- 2023-02-10T15:15:48
- Metadata standard name
- North American Profile of ISO 19115:2003 - Geographic information - Metadata
- Metadata standard version
- CAN/CGSB-171.100-2009
Overviews

Spatial extent
))
Provided by
