{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:56.971621", "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": "2011-Nov-01_to_2011-Nov-08_280.5_63.0"}, "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": 2011110001598}, "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": "November 01 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 08 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 114601.75391022555}, "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", "Hudson Strait"]}, "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": 63.0}, "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": 280.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "280.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 279.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 289.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.75, 63.0], [-80.53, 63.53], [-80.18, 63.68], [-80.03, 64.03], [-79.5, 64.25], [-78.97, 64.03], [-78.75, 63.5], [-78.85, 63.25], [-78.75, 63.0], [-78.85, 62.75], [-78.75, 62.5], [-78.97, 61.97], [-79.5, 61.75], [-80.03, 61.97], [-80.18, 62.32], [-80.53, 62.47], [-80.75, 63.0]]]]}, "2011-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.75, 63.0], [-80.53, 63.53], [-80.18, 63.68], [-80.03, 64.03], [-79.5, 64.25], [-78.97, 64.03], [-78.82, 63.68], [-78.47, 63.53], [-78.25, 63.0], [-78.35, 62.75], [-78.25, 62.5], [-78.47, 61.97], [-79.0, 61.75], [-79.25, 61.85], [-79.5, 61.75], [-80.03, 61.97], [-80.18, 62.32], [-80.53, 62.47], [-80.75, 63.0]]]]}, "2011-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.75, 63.0], [-80.53, 63.53], [-80.18, 63.68], [-80.03, 64.03], [-79.5, 64.25], [-79.0, 64.04], [-78.5, 64.25], [-77.97, 64.03], [-77.82, 63.68], [-77.47, 63.53], [-77.25, 63.0], [-77.47, 62.47], [-77.82, 62.32], [-77.97, 61.97], [-78.5, 61.75], [-78.75, 61.85], [-79.0, 61.75], [-79.25, 61.85], [-79.5, 61.75], [-80.03, 61.97], [-80.18, 62.32], [-80.53, 62.47], [-80.75, 63.0]]]]}, "2011-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.25, 63.0], [-80.03, 63.53], [-79.5, 63.75], [-79.25, 63.65], [-79.18, 63.68], [-79.03, 64.03], [-78.5, 64.25], [-77.97, 64.03], [-77.82, 63.68], [-77.47, 63.53], [-77.25, 63.0], [-77.47, 62.47], [-77.82, 62.32], [-77.85, 62.25], [-77.75, 62.0], [-77.97, 61.47], [-78.5, 61.25], [-79.03, 61.47], [-79.18, 61.82], [-79.53, 61.97], [-79.68, 62.32], [-80.03, 62.47], [-80.25, 63.0]]]]}, "2011-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.25, 63.0], [-80.03, 63.53], [-79.5, 63.75], [-79.25, 63.65], [-79.18, 63.68], [-79.03, 64.03], [-78.5, 64.25], [-77.97, 64.03], [-77.82, 63.68], [-77.75, 63.65], [-77.5, 63.75], [-77.25, 63.65], [-77.0, 63.75], [-76.75, 63.65], [-76.5, 63.75], [-76.25, 63.65], [-76.18, 63.68], [-76.03, 64.03], [-75.5, 64.25], [-75.25, 64.15], [-75.0, 64.25], [-74.75, 64.15], [-74.5, 64.25], [-74.25, 64.15], [-74.0, 64.25], [-73.75, 64.15], [-73.5, 64.25], [-73.25, 64.15], [-73.0, 64.25], [-72.47, 64.03], [-72.25, 63.5], [-72.35, 63.25], [-72.25, 63.0], [-72.47, 62.47], [-73.0, 62.25], [-73.25, 62.35], [-73.32, 62.32], [-73.47, 61.97], [-73.87, 61.8], [-73.82, 61.68], [-73.47, 61.53], [-73.32, 61.18], [-72.97, 61.03], [-72.82, 60.68], [-72.47, 60.53], [-72.25, 60.0], [-72.47, 59.47], [-73.0, 59.25], [-73.25, 59.35], [-73.5, 59.25], [-73.75, 59.35], [-74.0, 59.25], [-74.53, 59.47], [-74.68, 59.82], [-74.75, 59.85], [-75.0, 59.75], [-75.25, 59.85], [-75.5, 59.75], [-76.03, 59.97], [-76.18, 60.32], [-76.53, 60.47], [-76.68, 60.82], [-77.03, 60.97], [-77.25, 61.5], [-77.15, 61.75], [-77.25, 62.0], [-77.15, 62.25], [-77.18, 62.32], [-77.25, 62.35], [-77.5, 62.25], [-77.75, 62.35], [-77.82, 62.32], [-77.85, 62.25], [-77.75, 62.0], [-77.97, 61.47], [-78.5, 61.25], [-79.03, 61.47], [-79.18, 61.82], [-79.53, 61.97], [-79.68, 62.32], [-80.03, 62.47], [-80.25, 63.0]]]]}, "2011-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.25, 63.0], [-80.03, 63.53], [-79.5, 63.75], [-79.25, 63.65], [-79.0, 63.75], [-78.75, 63.65], [-78.5, 63.75], [-78.25, 63.65], [-78.0, 63.75], [-77.75, 63.65], [-77.5, 63.75], [-77.25, 63.65], [-77.0, 63.75], [-76.75, 63.65], [-76.5, 63.75], [-76.25, 63.65], [-76.18, 63.68], [-76.03, 64.03], [-75.5, 64.25], [-75.25, 64.15], [-75.0, 64.25], [-74.75, 64.15], [-74.5, 64.25], [-74.25, 64.15], [-74.0, 64.25], [-73.75, 64.15], [-73.5, 64.25], [-73.25, 64.15], [-73.0, 64.25], [-72.47, 64.03], [-72.25, 63.5], [-72.35, 63.25], [-72.32, 63.18], [-72.25, 63.15], [-72.0, 63.25], [-71.47, 63.03], [-71.32, 62.68], [-71.25, 62.65], [-71.0, 62.75], [-70.47, 62.53], [-70.32, 62.18], [-69.97, 62.03], [-69.75, 61.5], [-69.97, 60.97], [-70.5, 60.75], [-70.75, 60.85], [-70.82, 60.82], [-70.97, 60.47], [-71.5, 60.25], [-71.75, 60.35], [-71.82, 60.32], [-71.97, 59.97], [-72.32, 59.82], [-72.47, 59.47], [-73.0, 59.25], [-73.25, 59.35], [-73.5, 59.25], [-73.75, 59.35], [-74.0, 59.25], [-74.53, 59.47], [-74.68, 59.82], [-74.75, 59.85], [-75.0, 59.75], [-75.25, 59.85], [-75.5, 59.75], [-76.03, 59.97], [-76.18, 60.32], [-76.53, 60.47], [-76.68, 60.82], [-77.03, 60.97], [-77.25, 61.5], [-77.15, 61.75], [-77.25, 62.0], [-77.15, 62.25], [-77.18, 62.32], [-77.25, 62.35], [-77.5, 62.25], [-77.75, 62.35], [-77.82, 62.32], [-77.85, 62.25], [-77.75, 62.0], [-77.97, 61.47], [-78.5, 61.25], [-79.03, 61.47], [-79.18, 61.82], [-79.53, 61.97], [-79.68, 62.32], [-80.03, 62.47], [-80.25, 63.0]]]]}, "2011-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.53, 62.47], [-78.75, 63.0], [-78.53, 63.53], [-78.0, 63.75], [-77.75, 63.65], [-77.5, 63.75], [-77.25, 63.65], [-77.0, 63.75], [-76.75, 63.65], [-76.5, 63.75], [-76.25, 63.65], [-76.18, 63.68], [-76.03, 64.03], [-75.5, 64.25], [-75.25, 64.15], [-75.0, 64.25], [-74.75, 64.15], [-74.5, 64.25], [-74.25, 64.15], [-74.0, 64.25], [-73.75, 64.15], [-73.5, 64.25], [-73.25, 64.15], [-73.0, 64.25], [-72.47, 64.03], [-72.25, 63.5], [-72.35, 63.25], [-72.32, 63.18], [-72.25, 63.15], [-72.0, 63.25], [-71.47, 63.03], [-71.32, 62.68], [-71.25, 62.65], [-71.0, 62.75], [-70.47, 62.53], [-70.32, 62.18], [-69.97, 62.03], [-69.75, 61.5], [-69.97, 60.97], [-70.5, 60.75], [-70.75, 60.85], [-70.82, 60.82], [-70.97, 60.47], [-71.5, 60.25], [-71.75, 60.35], [-71.82, 60.32], [-71.97, 59.97], [-72.32, 59.82], [-72.47, 59.47], [-73.0, 59.25], [-73.25, 59.35], [-73.5, 59.25], [-73.75, 59.35], [-74.0, 59.25], [-74.53, 59.47], [-74.68, 59.82], [-74.75, 59.85], [-75.0, 59.75], [-75.25, 59.85], [-75.5, 59.75], [-76.03, 59.97], [-76.18, 60.32], [-76.53, 60.47], [-76.68, 60.82], [-77.03, 60.97], [-77.25, 61.5], [-77.15, 61.75], [-77.25, 62.0], [-77.15, 62.25], [-77.18, 62.32], [-77.25, 62.35], [-77.5, 62.25], [-77.75, 62.35], [-78.0, 62.25], [-78.53, 62.47]]]]}, "2011-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.03, 62.47], [-78.25, 63.0], [-78.03, 63.53], [-77.5, 63.75], [-77.25, 63.65], [-77.0, 63.75], [-76.75, 63.65], [-76.5, 63.75], [-76.25, 63.65], [-76.0, 63.75], [-75.75, 63.65], [-75.5, 63.75], [-75.25, 63.65], [-75.0, 63.75], [-74.75, 63.65], [-74.5, 63.75], [-74.25, 63.65], [-74.0, 63.75], [-73.47, 63.53], [-73.32, 63.18], [-73.25, 63.15], [-73.0, 63.25], [-72.75, 63.15], [-72.5, 63.25], [-72.25, 63.15], [-72.0, 63.25], [-71.47, 63.03], [-71.32, 62.68], [-71.25, 62.65], [-71.0, 62.75], [-70.47, 62.53], [-70.32, 62.18], [-69.97, 62.03], [-69.75, 61.5], [-69.97, 60.97], [-70.5, 60.75], [-70.75, 60.85], [-70.82, 60.82], [-70.97, 60.47], [-71.5, 60.25], [-71.75, 60.35], [-71.82, 60.32], [-71.97, 59.97], [-72.32, 59.82], [-72.47, 59.47], [-73.0, 59.25], [-73.25, 59.35], [-73.5, 59.25], [-73.75, 59.35], [-74.0, 59.25], [-74.53, 59.47], [-74.68, 59.82], [-74.75, 59.85], [-75.0, 59.75], [-75.25, 59.85], [-75.5, 59.75], [-76.03, 59.97], [-76.25, 60.5], [-76.15, 60.75], [-76.25, 61.0], [-76.03, 61.53], [-75.68, 61.68], [-75.65, 61.75], [-75.68, 61.82], [-75.75, 61.85], [-76.0, 61.75], [-76.53, 61.97], [-76.68, 62.32], [-76.75, 62.35], [-77.0, 62.25], [-77.25, 62.35], [-77.5, 62.25], [-78.03, 62.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.3695246873516}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.807842047396905}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.09960622563420429, 0.23318717469300054, -0.12375967703036395, -0.2950355018858204, -1.280950924320166, -1.3489341994226152, -1.9351022819537889, -2.730172051727095]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.28943178482296616, 0.7626056596265585, 0.2723186852135768, 0.032468938936972336, 1.1910324412878026, 0.6112512805906931, -0.0842597132626679, -0.524805499316642]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.1950075207121102, 3.5113314848259827, 3.3583990913812043, 3.226376084816792, 4.417554725203452, 5.179023694899042, 5.216447495019873, 4.890587197059807]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.397543593152477, 3.779140065610818, 3.7904555053723925, 3.4012607255190233, 6.386624900534457, 7.336675572974627, 7.3695246873516, 6.538208980314778]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3158292093765698, 1.4114630269716069, 1.3095795743961676, 1.2672202084294808, 1.4442822322538502, 1.6353415241615594, 1.6022570778978977, 1.4230071277609566]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3692799893329137, 1.597167971178203, 1.4249940282694358, 1.3755518455720588, 1.8298558320991476, 2.030181408489963, 1.843824664057569, 1.562849855680332]}}