{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:44.707323", "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": "2023-Dec-08_to_2023-Dec-10_278.5_43.5"}, "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": 2023120001238}, "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": "December 08 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 10 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 76358.67083155477}, "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", "United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": []}, "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": 43.5}, "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": 278.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "278.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 275.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 280.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 42.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-85.25, 44.0], [-85.15, 44.25], [-85.25, 44.5], [-85.03, 45.03], [-84.5, 45.25], [-84.25, 45.15], [-84.0, 45.25], [-83.75, 45.15], [-83.5, 45.25], [-82.97, 45.03], [-82.82, 44.68], [-82.47, 44.53], [-82.32, 44.18], [-82.25, 44.15], [-82.18, 44.18], [-82.15, 44.25], [-82.25, 44.5], [-82.15, 44.75], [-82.25, 45.0], [-82.03, 45.53], [-81.5, 45.75], [-80.97, 45.53], [-80.75, 45.0], [-80.85, 44.75], [-80.75, 44.5], [-80.85, 44.25], [-80.82, 44.18], [-80.47, 44.03], [-80.25, 43.5], [-80.35, 43.25], [-80.32, 43.18], [-80.25, 43.15], [-80.18, 43.18], [-80.03, 43.53], [-79.5, 43.75], [-78.97, 43.53], [-78.75, 43.0], [-78.97, 42.47], [-79.32, 42.32], [-79.47, 41.97], [-80.0, 41.75], [-80.25, 41.85], [-80.5, 41.75], [-80.75, 41.85], [-81.0, 41.75], [-81.25, 41.85], [-81.5, 41.75], [-81.75, 41.85], [-82.0, 41.75], [-82.25, 41.85], [-82.5, 41.75], [-83.0, 41.96], [-83.5, 41.75], [-84.03, 41.97], [-84.18, 42.32], [-84.25, 42.35], [-84.5, 42.25], [-85.03, 42.47], [-85.25, 43.0], [-85.15, 43.25], [-85.25, 43.5], [-85.15, 43.75], [-85.25, 44.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.25, 43.5], [-85.14999999999998, 43.75], [-85.25, 44.0], [-85.14999999999998, 44.25], [-85.25, 44.5], [-85.02999999999997, 45.03], [-84.5, 45.25], [-84.25, 45.15], [-84.0, 45.25], [-83.75, 45.15], [-83.5, 45.25], [-82.97000000000003, 45.03], [-82.82, 44.68], [-82.47000000000003, 44.53], [-82.32, 44.18], [-82.25, 44.15], [-82.18, 44.18], [-82.14999999999998, 44.25], [-82.25, 44.5], [-82.14999999999998, 44.75], [-82.25, 45.0], [-82.02999999999997, 45.53], [-81.5, 45.75], [-80.97000000000003, 45.53], [-80.75, 45.0], [-80.85000000000002, 44.75], [-80.75, 44.5], [-80.85000000000002, 44.25], [-80.82, 44.18], [-80.47000000000003, 44.03], [-80.25, 43.5], [-80.35000000000002, 43.25], [-80.32, 43.18], [-80.25, 43.15], [-80.18, 43.18], [-80.02999999999997, 43.53], [-79.5, 43.75], [-78.97000000000003, 43.53], [-78.75, 43.0], [-78.97000000000003, 42.47], [-79.32, 42.32], [-79.47000000000003, 41.97], [-80.0, 41.75], [-80.25, 41.85], [-80.5, 41.75], [-80.75, 41.85], [-81.0, 41.75], [-81.25, 41.85], [-81.5, 41.75], [-81.75, 41.85], [-82.0, 41.75], [-82.25, 41.85], [-82.5, 41.75], [-83.0, 41.96], [-83.5, 41.75], [-84.02999999999997, 41.97], [-84.18, 42.32], [-84.25, 42.35], [-84.5, 42.25], [-85.02999999999997, 42.47], [-85.25, 43.0], [-85.14999999999998, 43.25], [-85.25, 43.5]]]]}, "2023-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.25, 43.5], [-85.14999999999998, 43.75], [-85.25, 44.0], [-85.14999999999998, 44.25], [-85.25, 44.5], [-85.02999999999997, 45.03], [-84.5, 45.25], [-84.25, 45.15], [-84.0, 45.25], [-83.75, 45.15], [-83.5, 45.25], [-82.97000000000003, 45.03], [-82.82, 44.68], [-82.47000000000003, 44.53], [-82.32, 44.18], [-82.25, 44.15], [-82.18, 44.18], [-82.14999999999998, 44.25], [-82.25, 44.5], [-82.14999999999998, 44.75], [-82.25, 45.0], [-82.02999999999997, 45.53], [-81.5, 45.75], [-80.97000000000003, 45.53], [-80.75, 45.0], [-80.85000000000002, 44.75], [-80.75, 44.5], [-80.85000000000002, 44.25], [-80.82, 44.18], [-80.47000000000003, 44.03], [-80.25, 43.5], [-80.35000000000002, 43.25], [-80.32, 43.18], [-80.25, 43.15], [-80.18, 43.18], [-80.02999999999997, 43.53], [-79.5, 43.75], [-78.97000000000003, 43.53], [-78.75, 43.0], [-78.97000000000003, 42.47], [-79.32, 42.32], [-79.47000000000003, 41.97], [-80.0, 41.75], [-80.25, 41.85], [-80.5, 41.75], [-80.75, 41.85], [-81.0, 41.75], [-81.25, 41.85], [-81.5, 41.75], [-81.75, 41.85], [-82.0, 41.75], [-82.25, 41.85], [-82.5, 41.75], [-83.0, 41.96], [-83.5, 41.75], [-84.02999999999997, 41.97], [-84.18, 42.32], [-84.25, 42.35], [-84.5, 42.25], [-85.02999999999997, 42.47], [-85.25, 43.0], [-85.14999999999998, 43.25], [-85.25, 43.5]]]]}, "2023-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-85.25, 43.5], [-85.14999999999998, 43.75], [-85.25, 44.0], [-85.14999999999998, 44.25], [-85.25, 44.5], [-85.02999999999997, 45.03], [-84.5, 45.25], [-84.25, 45.15], [-84.0, 45.25], [-83.75, 45.15], [-83.5, 45.25], [-82.97000000000003, 45.03], [-82.82, 44.68], [-82.47000000000003, 44.53], [-82.32, 44.18], [-82.25, 44.15], [-82.18, 44.18], [-82.14999999999998, 44.25], [-82.25, 44.5], [-82.14999999999998, 44.75], [-82.25, 45.0], [-82.02999999999997, 45.53], [-81.5, 45.75], [-80.97000000000003, 45.53], [-80.75, 45.0], [-80.85000000000002, 44.75], [-80.75, 44.5], [-80.85000000000002, 44.25], [-80.82, 44.18], [-80.47000000000003, 44.03], [-80.25, 43.5], [-80.35000000000002, 43.25], [-80.32, 43.18], [-80.25, 43.15], [-80.18, 43.18], [-80.02999999999997, 43.53], [-79.5, 43.75], [-78.97000000000003, 43.53], [-78.75, 43.0], [-78.97000000000003, 42.47], [-79.32, 42.32], [-79.47000000000003, 41.97], [-80.0, 41.75], [-80.25, 41.85], [-80.5, 41.75], [-80.75, 41.85], [-81.0, 41.75], [-81.25, 41.85], [-81.5, 41.75], [-81.75, 41.85], [-82.0, 41.75], [-82.25, 41.85], [-82.5, 41.75], [-83.0, 41.96], [-83.5, 41.75], [-84.02999999999997, 41.97], [-84.18, 42.32], [-84.25, 42.35], [-84.5, 42.25], [-85.02999999999997, 42.47], [-85.25, 43.0], [-85.14999999999998, 43.25], [-85.25, 43.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 13.255375285200614}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.502666449754581}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.452959240981784, 9.911846826872988, 4.900745272095946]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.090851327370785, 11.886477488634341, 7.489023740080427]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.893785968778957, 10.781581628837712, 5.832631751647064]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.4126027772611, 13.255375285200614, 7.933914670796639]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.410579075675175, 2.619613893752298, 1.3885817704030516]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.577058811143077, 2.9439698963380274, 1.7437099879342186]}}