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Found 10 records similar to Canadian Historical Daily Snow Depth Database

Federal

In situ observations of snow water equivalent (SWE) from manual snow surveys and automated sensors are made at ~1000 sites across Canada in support of water resource planning for flood control and hydroelectricity production. These data represent an important source of information for research (e.g. validation of hydrological and climate model models), for applied studies (e.g. snow loads) and for climate monitoring.

Last Updated: Jul. 28, 2021
Date Published: Nov. 30, 2018
Organization: Environment and Climate Change Canada
Formats: PDF CSV HTML
Keywords:  snow surveys, snow, Water - Quantity
Federal

This dataset corresponds to daily snow cover percentage at 1km resolution grid over land areas of Canada from 2006-2010. The data are subsampled by 4km to reduce data volumes and considering the geolocation uncertainty of the input satellite imagery. The daily maps are generated by assimilation of daily cloud screened NOAA AVHRR satellite imagery and Canadian Meteorological Centre (CMC) snow depth analysis snow depth and density fields within an off-line version of the CMC daily snow depth model. The snow depth model is modified to include snowpack reflectance model and a surface radiative transfer scheme that relates vegetation and snowpack reflectance to top-of-canopy bi-directional reflectance.

Last Updated: Mar. 2, 2022
Date Published: May 19, 2015
Organization: Natural Resources Canada
Formats: ESRI REST
Keywords:  snow cover, snow areal extent, Canada, Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Northwest Territories
Federal

Over southern Canada maximum snow depth usually occurs in January or February, while the time of maximum accumulation occurs much later in mountain areas and in the Arctic. The main features of the map are the pronounced maximum in snow accumulation over the western Cordillera (British Columbia and Yukon), where snow depths can exceed several metres, with a secondary maximum over Quebec and Labrador. These maxima are related to their proximity to oceans, which acts as sources of moisture and winter storms, and to the orographic effect of the mountains in the case of western Canada. The two maxima are linked by a band of higher snow accumulation that follows the boreal forest zone; this is a preferred track for winter storms.

Last Updated: Mar. 14, 2022
Date Published: Jan. 1, 2006
Organization: Natural Resources Canada
Formats: PDF other
Keywords:  geographical maps, snow
Federal

The map shows the mean maximum depth of snow in centimetres, the standard deviation of the mean maximum depth of snow, and the mean date of mean maximum depth of snow. The information shown on the map is compiled from 1961 – 1970 snow course data in conjunction with 1955 – 1972 snow depth data. An appreciation of the quantity of snow in storage within a drainage basin during late winter is critical to spring flood forecasting. As well, decisions regarding overland transport and wildlife control can be rationally taken.

Last Updated: Feb. 22, 2022
Date Published: Jan. 1, 1978
Organization: Natural Resources Canada
Formats: PDF JPG
Keywords:  climate, hydrology, precipitation, water balance
Federal

This paper presents an analysis of observed and simulated historical snow cover extent and snow mass, along with future snow cover projections from models participating in the 6th phase of the World Climate Research Programme Coupled Model Inter-comparison Project (CMIP6). Where appropriate, the CMIP6 output is compared to CMIP5 results in order to assess progress (or absence thereof) between successive model generations. An ensemble of six observation-based products is used to produce a new time series of historical Northern Hemisphere snow extent anomalies and trends; a subset of four of these products is used for snow mass. Trends in snow extent over 1981-2018 are negative in all months, and exceed -50 x 103 km2 during November, December, March, and May.

Last Updated: Jul. 21, 2021
Date Published: May 5, 2020
Organization: Environment and Climate Change Canada
Formats: HTML
Keywords:  CMIP6, snow extent, snow mass, Climate, Climatology, meteorology, atmosphere, Weather and Climate
Federal

Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the snow cover data, referring primarily to the presence and total depth of a snow cover on the surface of the earth, across Canada. This is in contrast to data characteristics of snow cover depth, which increases by the occurrence of freshly fallen snow, but decreases by melting, wind action and settling. Two maps of these maps show the mean dates of the occurrence of first and last snow covers by one inch (2.54 cm) or greater. These are not necessarily the average dates to the beginning and ending of a continuous snow cover, since the snow cover may form and later disappear once or several times during a winter season.

Last Updated: Mar. 14, 2022
Date Published: Jan. 1, 1957
Organization: Natural Resources Canada
Formats: PDF JPG
Keywords:  climate, climate archives, meteorological data, meteorology, snow, weather
Federal

Daily climate observations are derived from two sources of data. The first are Daily Climate Stations producing one or two observations per day of temperature, precipitation. The second are hourly stations that typically produce more weather elements e.g. wind or snow on ground.

Last Updated: Jan. 15, 2020
Date Published: Aug. 28, 2018
Organization: Environment and Climate Change Canada
Formats: WFS CSV HTML
Keywords:  Weather and Climate, Atmosphere, National (CA), Provide Climate Information Products and Services, Deliver Climate Products and Services to Clients, Climate, Climate archives, Climate change
Federal

This map shows the median date of snow-cover loss (defined as the last date with 14 consecutive days of snow cover greater than 2 centimetres in depth) computed over 18 winter seasons (1979 to 1997). In areas with permanent or semipermanent snow cover (for example, Arctic ice caps) or in areas with irregular or ephemeral snow cover (coastal British Columbia), researchers were unable to compute the median values. The end date contours follow topography more closely than start date due to the influence of elevation on total snow accumulation and air temperature. The date of snow-cover loss has important implications for wildlife (for example, bird migration and nesting), vegetation, local climate and hydrology.

Last Updated: Mar. 14, 2022
Date Published: Dec. 31, 2010
Organization: Natural Resources Canada
Formats: JP2 other ZIP
Keywords:  environment, map, snow
Provincial

Manual snow survey sampling from snow courses consisting of 10 measurement points. Measurements of snow water equivalent (SWE), and snow density are expressed as an average across the snow course. Measurements are taken three times a year at the start of March, April , and May.

Last Updated: Apr. 13, 2022
Date Published: Apr. 10, 2018
Organization: Government of Yukon
Formats: CSV HTML
Keywords:  snow, hydrology, water, climate
Federal

This map shows the median date of snow-cover onset (defined as the first date with 14 consecutive days of snow cover greater than 2 centimetres in depth) computed over 18 winter seasons (1979 to 1997). In areas with permanent or semipermanent snow cover (for example, Arctic ice caps) or in areas with irregular or ephemeral snow cover (coastal British Columbia), researchers were unable to compute the median values. The main feature of the map is the rapid southward extension of snow cover over Canada during the September to December period. The moderating influence of Hudson Bay can be seen over northern Quebec, where snow cover starts later than in the equivalent latitudes west of Hudson Bay.

Last Updated: Mar. 14, 2022
Date Published: Dec. 31, 2010
Organization: Natural Resources Canada
Formats: JP2 other ZIP
Keywords:  environment, map, snow
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