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Historical Canadian Climate Database - Monthly Homogenized Precipitation and Temperature Data Sets Entry ID: Canada_EC_HistCdnClimateData |
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Summary
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Abstract:
Monthly Rehabilitated Precipitation and Homogenized Temperature Data Sets Climate Research Branch (CCRM) - Environment Canada. A database of homogenized and long-term temperature and precipitation time series has been specifically designed for climate change analyses over Canada. Temperature: The data consist of monthly maximum, minimum and mean temperatures for 210 locations across the country. Series extend back to 1895 where possible: however, data availability over most of the Canadian Arctic is restricted to the mid-1940s to present. Homogeneity problems caused by station relocation and changes in observing procedures were addressed using a regression model technique applied with surrounding stations. Monthly adjustments were obtained for identified inhomogeneities (the cause was often retrieved from the station history files) and a database of monthly maximum, minimum and mean temperatures was created. Precipitation: A total of 495 locations, most with data covering the period 1895-present were used. Data availability in much of the Canadian Arctic was restricted to 1948-present. Adjustments were applied on daily basis for rain and snow separately. Metadata file was created containing all information about the different precipitation measurement programs. For each rain gauge type, different adjustments to account for wind undercatch, evaporation and wetting loss were implemented. For snowfall, ruler measurements were used throughout the time series in order to minimize potential discontinuities introduced by the adoption of Nipher shielded gauge in the mid-1960s. Snow density adjustments based upon coincident ruler and Nipher observations were mapped over the country and applied to the ruler observations. Great care was taken to properly account for the trace measurements.To provide Canadian precipitation and temperature data sets for climate research. Spatial Data Organization Information - Indirect Spatial Reference: Direct Spatial Reference: Point Raster Object Type: Row Count: Column Count: Vertical Count: Spatial Reference Information - Horizontal Coordinate System Definition - Planar - Planar Coordinate Encoding Method: Coordinate Representation: Abscissa Resolution: Ordinate Resolution: Distance and Bearing Representation: Distance Resolution: Bearing Resolution: Bearing Units: Bearing Reference Direction: Bearing Reference Meridian: Planar Distance Units: Geodetic Model: Horizontal Datum Name: Ellipsoid Name: Semi-major Axis: Denominator of Flattening Ratio: |
Related URL
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Link:
View Related Information
Link: View Related Information Description: GeoConnections Discovery Portal. Canada's IDN Node. |
Geographic Coverage
| N: 84.0 | S: 42.0 | E: -52.0 | W: -141.0 |
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Data Set Citation
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Dataset Originator/Creator:
Environment Canada, Meteorological Service of Canada, CCRM
Dataset Title: Historical Canadian Climate Database - Monthly Homogenized Precipitation and Temperature Data Sets Online Resource: http://www.cccma.bc.ec.gc.ca/hccd/ |
Temporal Coverage
| Start Date: 1895-01-01 |
| Stop Date: 1999-12-31 |
Location Keywords
Science Keywords
| ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE [Definition] |
| ATMOSPHERE >ATMOSPHERIC TEMPERATURE >MAXIMUM/MINIMUM TEMPERATURE [Definition] |
| ATMOSPHERE >PRECIPITATION >LIQUID WATER EQUIVALENT [Definition] |
| ATMOSPHERE >PRECIPITATION >PRECIPITATION AMOUNT [Definition] |
| ATMOSPHERE >PRECIPITATION >RAIN [Definition] |
| ATMOSPHERE >PRECIPITATION >SNOW [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
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Quality
| ANNUALLY UPDATED |
Keywords
| GCMD |
| ADJUSTED DATA |
| CORRECTED DATA |
| EVAPORATION LOSS |
| GROUND STATION |
| HOMOGENIZED DATA |
| INSTRUMENTAL INHOMOGENEITIES |
| MONTHLY MAXIMUM TEMPERATURE |
| MONTHLY MEAN TEMPERATURE |
| MONTHLY MINIMUM TEMPERATURE |
| MONTHLY PRECIPITATION |
| MONTHLY RAINFALL |
| MONTHLY SNOWFALL |
| RAINFALL ADJUSTMENT |
| SNOW RULER |
| SNOWFALL ADJUSTMENT |
| STATION DATA |
| TRACE PRECIPITATION |
| WETTING LOSS |
| WIND-INDUCED UNDERCATCH |
Data Set Progress
| COMPLETE |
Originating Center
Data Center
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Meteorological Service of Canada, Environment Canada
[Information]
Data Center URL: http://www.msc-smc.ec.gc.ca/
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Distribution
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Fees:
Gratuit-Free
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Personnel
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LUCIE
VINCENT Role: DIF AUTHOR Phone: +01-416-739-4337 Fax: +01-416-739-5700 Email: Lucie.Vincent at ec.gc.ca Contact Address: Climate Research Branch (CCRM) 4905 Dufferin Street City: Downsview Province or State: Ontario Postal Code: M3H 5T4 Country: Canada |
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EVA
MEKIS Role: TECHNICAL CONTACT Phone: +01-416-739-4374 Fax: +01-416-739-5700 Email: eva.mekis at ec.gc.ca Contact Address: Climate Research Branch (CCRM) 4905 Dufferin Street City: Downsview Province or State: Ontario Postal Code: M3H 5T4 Country: Canada |
Creation and Review Dates
DIF Creation Date:
2001-08-24
Last DIF Revision Date:
2009-01-15
Future DIF Review Date:
2005-01-31
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