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
RI_414
  Government of Canada; Agriculture and Agri-Food Canada; Science and Technology Branch
Canada
https://agriculture.canada.ca
RI_412
  Government of Canada; Agriculture and Agri-Food Canada; Science and Technology Branch
Canada
https://agriculture.canada.ca/
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
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Reference system identifier
http://www.epsg.org/ / EPSG:3857 / 8.3.4
RI_414
  Government of Canada; Agriculture and Agri-Food Canada; Science and Technology Branch
Canada
https://agriculture.canada.ca
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
RI_414
  Government of Canada; Agriculture and Agri-Food Canada; Science and Technology Branch
Canada
https://agriculture.canada.ca
 
 

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Spatial extent

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