{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:45.305373", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2022-Apr-12_to_2022-Apr-15_282.5_56.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2022040001741}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "April 12 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 15 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 95846.52161775413}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Canada"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["Hudson Bay"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 56.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 282.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "282.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 278.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.53, 56.03], [-81.18, 56.18], [-81.03, 56.53], [-80.5, 56.75], [-80.25, 56.65], [-80.0, 56.75], [-79.75, 56.65], [-79.5, 56.75], [-79.25, 56.65], [-79.18, 56.68], [-79.03, 57.03], [-78.5, 57.25], [-78.25, 57.15], [-78.0, 57.25], [-77.75, 57.15], [-77.5, 57.25], [-77.25, 57.15], [-77.0, 57.25], [-76.75, 57.15], [-76.5, 57.25], [-75.97, 57.03], [-75.82, 56.68], [-75.75, 56.65], [-75.5, 56.75], [-75.25, 56.65], [-75.0, 56.75], [-74.75, 56.65], [-74.5, 56.75], [-74.25, 56.65], [-74.0, 56.75], [-73.75, 56.65], [-73.5, 56.75], [-73.25, 56.65], [-73.0, 56.75], [-72.75, 56.65], [-72.5, 56.75], [-71.97, 56.53], [-71.75, 56.0], [-71.85, 55.75], [-71.8, 55.62], [-71.5, 55.75], [-70.97, 55.53], [-70.75, 55.0], [-70.97, 54.47], [-71.5, 54.25], [-72.03, 54.47], [-72.2, 54.88], [-72.5, 54.75], [-72.75, 54.85], [-73.0, 54.75], [-73.25, 54.85], [-73.5, 54.75], [-73.75, 54.85], [-74.0, 54.75], [-74.25, 54.85], [-74.5, 54.75], [-74.75, 54.85], [-75.0, 54.75], [-75.25, 54.85], [-75.5, 54.75], [-75.75, 54.85], [-76.0, 54.75], [-76.25, 54.85], [-76.5, 54.75], [-76.75, 54.85], [-77.0, 54.75], [-77.25, 54.85], [-77.5, 54.75], [-77.75, 54.85], [-78.0, 54.75], [-78.25, 54.85], [-78.32, 54.82], [-78.47, 54.47], [-79.0, 54.25], [-79.25, 54.35], [-79.5, 54.25], [-79.75, 54.35], [-80.0, 54.25], [-80.25, 54.35], [-80.5, 54.25], [-80.75, 54.35], [-81.0, 54.25], [-81.53, 54.47], [-81.75, 55.0], [-81.65, 55.25], [-81.75, 55.5], [-81.53, 56.03]]]]}, "2022-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.53, 56.03], [-81.18, 56.18], [-81.03, 56.53], [-80.5, 56.75], [-80.25, 56.65], [-80.0, 56.75], [-79.75, 56.65], [-79.5, 56.75], [-79.25, 56.65], [-79.18, 56.68], [-79.03, 57.03], [-78.5, 57.25], [-78.25, 57.15], [-78.0, 57.25], [-77.75, 57.15], [-77.5, 57.25], [-77.25, 57.15], [-77.0, 57.25], [-76.75, 57.15], [-76.5, 57.25], [-75.97, 57.03], [-75.82, 56.68], [-75.75, 56.65], [-75.5, 56.75], [-75.25, 56.65], [-75.0, 56.75], [-74.75, 56.65], [-74.5, 56.75], [-74.25, 56.65], [-74.0, 56.75], [-73.75, 56.65], [-73.5, 56.75], [-73.25, 56.65], [-73.0, 56.75], [-72.75, 56.65], [-72.5, 56.75], [-72.25, 56.65], [-72.0, 56.75], [-71.75, 56.65], [-71.5, 56.75], [-70.97, 56.53], [-70.82, 56.18], [-70.75, 56.15], [-70.5, 56.25], [-69.97, 56.03], [-69.82, 55.68], [-69.47, 55.53], [-69.25, 55.0], [-69.47, 54.47], [-70.0, 54.25], [-70.25, 54.35], [-70.5, 54.25], [-70.75, 54.35], [-71.0, 54.25], [-71.25, 54.35], [-71.5, 54.25], [-72.03, 54.47], [-72.18, 54.82], [-72.25, 54.85], [-72.5, 54.75], [-72.75, 54.85], [-73.0, 54.75], [-73.25, 54.85], [-73.5, 54.75], [-73.75, 54.85], [-74.0, 54.75], [-74.25, 54.85], [-74.5, 54.75], [-74.75, 54.85], [-75.0, 54.75], [-75.25, 54.85], [-75.5, 54.75], [-75.75, 54.85], [-76.0, 54.75], [-76.25, 54.85], [-76.5, 54.75], [-76.75, 54.85], [-77.0, 54.75], [-77.25, 54.85], [-77.5, 54.75], [-77.75, 54.85], [-78.0, 54.75], [-78.25, 54.85], [-78.32, 54.82], [-78.47, 54.47], [-79.0, 54.25], [-79.25, 54.35], [-79.5, 54.25], [-79.75, 54.35], [-80.0, 54.25], [-80.25, 54.35], [-80.5, 54.25], [-80.75, 54.35], [-81.0, 54.25], [-81.53, 54.47], [-81.75, 55.0], [-81.65, 55.25], [-81.75, 55.5], [-81.53, 56.03]]]]}, "2022-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.53, 56.03], [-81.18, 56.18], [-81.03, 56.53], [-80.5, 56.75], [-80.25, 56.65], [-80.0, 56.75], [-79.75, 56.65], [-79.5, 56.75], [-79.25, 56.65], [-79.18, 56.68], [-79.03, 57.03], [-78.5, 57.25], [-78.25, 57.15], [-78.0, 57.25], [-77.75, 57.15], [-77.5, 57.25], [-77.25, 57.15], [-77.0, 57.25], [-76.75, 57.15], [-76.5, 57.25], [-75.97, 57.03], [-75.82, 56.68], [-75.75, 56.65], [-75.5, 56.75], [-75.25, 56.65], [-75.0, 56.75], [-74.75, 56.65], [-74.5, 56.75], [-74.25, 56.65], [-74.0, 56.75], [-73.75, 56.65], [-73.5, 56.75], [-73.25, 56.65], [-73.0, 56.75], [-72.75, 56.65], [-72.5, 56.75], [-72.25, 56.65], [-72.0, 56.75], [-71.75, 56.65], [-71.5, 56.75], [-70.97, 56.53], [-70.82, 56.18], [-70.75, 56.15], [-70.5, 56.25], [-69.97, 56.03], [-69.82, 55.68], [-69.47, 55.53], [-69.25, 55.0], [-69.47, 54.47], [-70.0, 54.25], [-70.25, 54.35], [-70.5, 54.25], [-70.75, 54.35], [-71.0, 54.25], [-71.25, 54.35], [-71.5, 54.25], [-72.03, 54.47], [-72.18, 54.82], [-72.25, 54.85], [-72.5, 54.75], [-72.75, 54.85], [-73.0, 54.75], [-73.25, 54.85], [-73.5, 54.75], [-73.75, 54.85], [-74.0, 54.75], [-74.25, 54.85], [-74.5, 54.75], [-74.75, 54.85], [-75.0, 54.75], [-75.25, 54.85], [-75.5, 54.75], [-75.75, 54.85], [-76.0, 54.75], [-76.25, 54.85], [-76.5, 54.75], [-76.75, 54.85], [-77.0, 54.75], [-77.25, 54.85], [-77.5, 54.75], [-77.75, 54.85], [-78.0, 54.75], [-78.25, 54.85], [-78.32, 54.82], [-78.47, 54.47], [-79.0, 54.25], [-79.25, 54.35], [-79.5, 54.25], [-79.75, 54.35], [-80.0, 54.25], [-80.25, 54.35], [-80.5, 54.25], [-80.75, 54.35], [-81.0, 54.25], [-81.53, 54.47], [-81.75, 55.0], [-81.65, 55.25], [-81.75, 55.5], [-81.53, 56.03]]]]}, "2022-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.53, 56.03], [-81.18, 56.18], [-81.03, 56.53], [-80.5, 56.75], [-80.25, 56.65], [-80.0, 56.75], [-79.75, 56.65], [-79.5, 56.75], [-79.25, 56.65], [-79.18, 56.68], [-79.03, 57.03], [-78.5, 57.25], [-78.25, 57.15], [-78.0, 57.25], [-77.75, 57.15], [-77.5, 57.25], [-77.25, 57.15], [-77.0, 57.25], [-76.75, 57.15], [-76.5, 57.25], [-75.97, 57.03], [-75.82, 56.68], [-75.75, 56.65], [-75.5, 56.75], [-75.25, 56.65], [-75.0, 56.75], [-74.75, 56.65], [-74.5, 56.75], [-74.25, 56.65], [-74.0, 56.75], [-73.75, 56.65], [-73.5, 56.75], [-73.25, 56.65], [-73.0, 56.75], [-72.75, 56.65], [-72.5, 56.75], [-72.25, 56.65], [-72.0, 56.75], [-71.75, 56.65], [-71.5, 56.75], [-70.97, 56.53], [-70.82, 56.18], [-70.75, 56.15], [-70.5, 56.25], [-69.97, 56.03], [-69.82, 55.68], [-69.47, 55.53], [-69.25, 55.0], [-69.47, 54.47], [-70.0, 54.25], [-70.25, 54.35], [-70.5, 54.25], [-70.75, 54.35], [-71.0, 54.25], [-71.25, 54.35], [-71.5, 54.25], [-72.03, 54.47], [-72.18, 54.82], [-72.25, 54.85], [-72.5, 54.75], [-72.75, 54.85], [-73.0, 54.75], [-73.25, 54.85], [-73.5, 54.75], [-73.75, 54.85], [-74.0, 54.75], [-74.25, 54.85], [-74.5, 54.75], [-74.75, 54.85], [-75.0, 54.75], [-75.25, 54.85], [-75.5, 54.75], [-75.75, 54.85], [-76.0, 54.75], [-76.25, 54.85], [-76.5, 54.75], [-76.75, 54.85], [-77.0, 54.75], [-77.25, 54.85], [-77.5, 54.75], [-77.75, 54.85], [-78.0, 54.75], [-78.25, 54.85], [-78.32, 54.82], [-78.47, 54.47], [-79.0, 54.25], [-79.25, 54.35], [-79.5, 54.25], [-79.75, 54.35], [-80.0, 54.25], [-80.25, 54.35], [-80.5, 54.25], [-80.75, 54.35], [-81.0, 54.25], [-81.53, 54.47], [-81.75, 55.0], [-81.65, 55.25], [-81.75, 55.5], [-81.53, 56.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.714020498630646}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.152670033615664}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.5179003584226507, -1.3932002536834034, -1.159018194550356, 0.1877190175029]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.0326117825354117, -0.08398135344555158, 0.26552075133361086, 1.4947722174831028]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.795920997721725, 7.657160382688831, 7.62558196573131, 8.637276036992693]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.714020498630646, 9.213780071773328, 8.993015269076238, 9.226034275666791]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7676209759325265, 1.5327900526385085, 1.565048819515831, 1.8065536941328257]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.017062002102236, 1.7779296383146597, 1.7267311425282175, 2.125567555800126]}}