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The Canadian Meteorological Centre CMC produces Numerical Weather Prediction NWP as one of the key inputs to the Meteorological Service of Canada's overall public weather and environmental prediction and warning process. The raw data from NWP is made available to outside users who may use it for their own purposes. As NWP data is an early input into the overall MSC public forecast process, it may differ from the official forecast.
Meteorological Observations describe datasets that contain information about weather and climate conditions as available on the City-Pages of the Environment Canada WeatherOffice.gc.ca web site. These pages contain information about current weather conditions and past climate including temperature, wind, and humidity measurements, written descriptions of current conditions, rain and snow amounts, average and extreme temperatures, etc. The current conditions are acquired from a variety of observing system operators and are provided in near-real time with limited quality assurance. Current condition information should not be considered as quality-controlled official values.
Climate Data Products at Environment Canada comprise of four different datasets: Almanac Averages and Extremes, Monthly Climate Summaries, Canadian Climate Normals, and Canadian Historical Weather Radar. Almanac Averages and Extremes provides average and extreme temperature and precipitation values for a particular station over its entire period of record. Monthly Climate Summaries contains values of various climatic parameters, including monthly averages and extremes of temperature, precipitation amounts, degree days, sunshine hours, days without precipitation, etc. Canadian Climate Normals are used to summarize or describe the average climatic conditions of a particular location.
"The Air Quality Health Index AQHI is a scale designed to help quantify the quality of the air in a certain region on a scale from 1 to 10. When the amount of air pollution is very high, the number is reported as 10+. It also includes a category that describes the health risk associated with the index reading e.g. Low, Moderate, High, or Very High Health Risk .
Meteorological forecasts are datasets that are products of current observations and are used to predict climate conditions for a future time and given location.
Engineering Climate Datasets encompasses Intensity-Duration-Frequency IDF Files, Canadian Weather Energy and Engineering Datasets CWEEDS , and Canadian Weather Year For Energy Calculation CWEC . IDF tabulates and graphs short-duration rainfall statistics across 563 locations in Canada. CWEEDS is a computer dataset of hourly conditions at specific locations, including data from 1953 until 2005. It also includes long term weather records used in urban planning and green building design, as well as estimates of hourly solar radiation amounts.
Canada has one of the most severe winter climates of any country in the world. Canadians across the country may face severe cold weather conditions that can affect their health. Learn how to adjust to cold conditions so you can enjoy the winter weather.
Locations of automated snow weather stations, active and inactive. Automated snow weather stations are components of the BC snow survey network.
The high spatial and temporal resolution network was comprised of new automated land- and marine-based weather stations, and additional experimental monitoring platforms. Environment and Climate Change Canada (ECCC) designed the Mesonet to monitor weather at the venues, while providing close tracking of southern Ontario lake breezes, which can be associated with severe weather initiation and high air pollutant concentrations. To track the lake breeze, existing land and marine monitoring capacity was identified and expanded to define the Mesonet. The Games hosted a number of open-water events in the inner harbour and south of the Toronto Islands, an area where the competition or logistics could be affected by thunderstorms, severe weather or heat stress.
Mesoscale boundaries have an important influence on mesoscale weather. They can trigger, enhance or inhibit convections and severe weather. They are also indicators of shifts in wind speed and direction, temperature and relative humidity, and can affect air quality and heat indices. Around the Great Lakes, it has been observed that mesoscale boundaries are prevalent and can have complex interactions between each other.