Mesonet Automated Land Stations Observations - TO2015 Pan and Parapan American Games

Environment and Climate Change Canada added 40 compact stations, 10 ATMOS stations and 3 standard automated MSC Auto8 stations to the existing networks to form a high-resolution monitoring system across southern Ontario known as the Mesonet. These stations provided both high-density spacing and high-frequency minute-by-minute observations. Standard meteorological variables were reported—atmospheric pressure, wind speed and direction, relative humidity, temperature and precipitation amounts—as well as a new element recorded by a black globe thermometer, used in the evaluation of heat stress on the human body.

The new automated surface weather stations were configured to report every minute, a sharp departure from the standard hourly reporting. The minute-by-minute reporting was successfully implemented at all 53 new automated weather stations in the Mesonet.

All data in these datasets are essentially ‘raw’, having undergone only minimal automated Quality Control (QC) (manual QC of the ATMOS Mesonet data will be posted to the Science Showcase section of the Legacy Archive, when available). The user is referred to an additional Instrumentation Metadata XLS file posted with the Datasets that describes specific data issues that the users must be aware of before using the datasets.

Site photos for all 53 weather stations are available from the Legacy Archive Data Contact.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 21:18 (UTC)
Created	April 17, 2026, 21:18 (UTC)
contact_email	open-ouvert@tbs-sct.gc.ca
contact_person	{}
criticality_level	[]
data_dictionary	["environment"]
geographic_scope	[]
open_canada_collection	primary
open_canada_date_published	2016-06-30 00:00:00
open_canada_keywords	{"fr": ["TO2015", "2015 Jeux", "2015", "Panaméricain", "Parapanaméricain", "Ontario", "sud de l Ontario", "Toronto", "Environnement Canada", "Environnement et Changement Climatique Canada", "SMC", "Service Météorologique du Canada", "surveillance atmosphérique", "météorologie", "météo", "observations météorologiques", "stations météorologiques", "stations automatisées", "stations météorologiques compactes", "technologie", "science", "recherche", "ATMOS", "Vaisala WXT520", "Lufft WS600", "Lufft WS601", "données à la minute", "donées brutes", "précipitation", "chute de pluie", "température", "température ambiante", "température de l air", "température rosée", "température humide", "température à globe noir", "vent", "vitesse du vent", "direction du vent", "vitesse", "direction", "rafale", "humidité", "humidité relative", "pression", "NMM", "pression au niveau moyen de la mer", "pression de la station", "tendance de la pression"], "en": ["TO2015", "2015 Games", "2015", "Pan Am", "Parapan Am", "Ontario", "Southern Ontario", "Toronto", "Environment Canada", "Environment and Climate Change Canada", "MSC", "Meteorological Service of Canada", "atmospheric monitoring", "meteorology", "weather", "weather observations", "weather stations", "automated stations", "compact weather stations", "technology", "science", "research", "ATMOS", "Vaisala WXT520", "Lufft WS600", "Luftt WS601", "minutely data", "raw data", "precipitation", "rainfall", "temperature", "ambient temperature", "air temperature", "dew point temperature", "wet bulb temperature", "Black Globe temperature", "wind", "wind speed", "wind direction", "speed", "direction", "gust", "humidity", "relative humidity", "pressure", "MSL", "mean sea level pressure", "station pressure", "pressure tendency"]}
open_canada_subject	["nature_and_environment"]
sensitivity_level	unrestricted
title_fr	Observations des stations de surface automatisées du Mesonet -- Jeux panaméricains et parapanaméricains de TO2015
update_frequency	as_needed