{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:22.480989", "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": "2012-Aug-30_to_2012-Sep-05_271.5_48.5"}, "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": 2012080003093}, "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": "August 30 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 05 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 60359.022161432535}, "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": ["C.North-America", "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": []}, "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": 48.5}, "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": 271.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "271.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 268.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 274.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.03, 47.97], [-89.25, 48.5], [-89.03, 49.03], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.47, 49.03], [-87.25, 48.5], [-87.47, 47.97], [-88.0, 47.75], [-88.25, 47.85], [-88.5, 47.75], [-89.03, 47.97]]]]}, "2012-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.03, 47.97], [-89.25, 48.5], [-89.03, 49.03], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.47, 49.03], [-87.25, 48.5], [-87.47, 47.97], [-88.0, 47.75], [-88.25, 47.85], [-88.5, 47.75], [-89.03, 47.97]]]]}, "2012-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.47, 49.03], [-87.25, 48.5], [-87.47, 47.97], [-87.82, 47.82], [-87.97, 47.47], [-88.5, 47.25], [-88.75, 47.35], [-89.0, 47.25], [-89.53, 47.47], [-89.75, 48.0], [-89.53, 48.53], [-89.18, 48.68], [-89.03, 49.03], [-88.5, 49.25]]]]}, "2012-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.75, 48.5], [-85.85, 48.25], [-85.82, 48.18], [-85.47, 48.03], [-85.25, 47.5], [-85.35, 47.25], [-85.25, 47.0], [-85.47, 46.47], [-86.0, 46.25], [-86.25, 46.35], [-86.5, 46.25], [-86.75, 46.35], [-87.0, 46.25], [-87.53, 46.47], [-87.68, 46.82], [-88.03, 46.97], [-88.18, 47.32], [-88.25, 47.35], [-88.5, 47.25], [-88.75, 47.35], [-89.0, 47.25], [-89.53, 47.47], [-89.75, 48.0], [-89.53, 48.53], [-89.18, 48.68], [-89.03, 49.03], [-88.5, 49.25]]]]}, "2012-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.53, 46.47], [-91.75, 47.0], [-91.53, 47.53], [-91.0, 47.75], [-90.75, 47.65], [-90.68, 47.68], [-90.53, 48.03], [-90.0, 48.25], [-89.75, 48.15], [-89.68, 48.18], [-89.53, 48.53], [-89.18, 48.68], [-89.03, 49.03], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97, 48.53], [-84.75, 48.0], [-84.97, 47.47], [-85.32, 47.32], [-85.35, 47.25], [-85.25, 47.0], [-85.47, 46.47], [-86.0, 46.25], [-86.25, 46.35], [-86.5, 46.25], [-86.75, 46.35], [-87.0, 46.25], [-87.25, 46.35], [-87.5, 46.25], [-88.03, 46.47], [-88.2, 46.88], [-88.5, 46.75], [-88.75, 46.85], [-88.82, 46.82], [-88.97, 46.47], [-89.5, 46.25], [-89.75, 46.35], [-90.0, 46.25], [-90.25, 46.35], [-90.5, 46.25], [-90.75, 46.35], [-91.0, 46.25], [-91.53, 46.47]]]]}, "2012-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.53, 46.47], [-91.75, 47.0], [-91.53, 47.53], [-91.0, 47.75], [-90.75, 47.65], [-90.68, 47.68], [-90.53, 48.03], [-90.0, 48.25], [-89.75, 48.15], [-89.68, 48.18], [-89.53, 48.53], [-89.18, 48.68], [-89.03, 49.03], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97, 48.53], [-84.75, 48.0], [-84.97, 47.47], [-85.32, 47.32], [-85.35, 47.25], [-85.25, 47.0], [-85.47, 46.47], [-86.0, 46.25], [-86.25, 46.35], [-86.5, 46.25], [-86.75, 46.35], [-87.0, 46.25], [-87.25, 46.35], [-87.5, 46.25], [-88.03, 46.47], [-88.2, 46.88], [-88.5, 46.75], [-88.75, 46.85], [-88.82, 46.82], [-88.97, 46.47], [-89.5, 46.25], [-89.75, 46.35], [-90.0, 46.25], [-90.25, 46.35], [-90.5, 46.25], [-90.75, 46.35], [-91.0, 46.25], [-91.53, 46.47]]]]}, "2012-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.53, 46.47], [-91.75, 47.0], [-91.53, 47.53], [-91.0, 47.75], [-90.75, 47.65], [-90.68, 47.68], [-90.53, 48.03], [-90.0, 48.25], [-89.75, 48.15], [-89.5, 48.25], [-89.25, 48.15], [-89.18, 48.18], [-89.15, 48.25], [-89.25, 48.5], [-89.03, 49.03], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97, 48.53], [-84.75, 48.0], [-84.97, 47.47], [-85.32, 47.32], [-85.35, 47.25], [-85.25, 47.0], [-85.47, 46.47], [-86.0, 46.25], [-86.25, 46.35], [-86.5, 46.25], [-86.75, 46.35], [-87.0, 46.25], [-87.25, 46.35], [-87.5, 46.25], [-88.03, 46.47], [-88.2, 46.88], [-88.5, 46.75], [-88.75, 46.85], [-88.82, 46.82], [-88.97, 46.47], [-89.5, 46.25], [-89.75, 46.35], [-90.0, 46.25], [-90.25, 46.35], [-90.5, 46.25], [-90.75, 46.35], [-91.0, 46.25], [-91.53, 46.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.236701112034723}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.909368710309741}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.868730080183127, 21.936594295432315, 21.857183516680323, 22.20164991898639, 22.396224292908983, 23.286968944743023, 22.34659101155239]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.95202501315913, 22.260806370556168, 22.002669032442725, 22.469957887027533, 24.324112708785492, 24.663774865970254, 23.284287570629033]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.064677230949712, 4.3030086579980775, 4.105152440505279, 4.555544486395807, 4.55011542165385, 5.629319346366429, 4.910353749537917]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.08394170523087, 4.5624380341415645, 4.386119576709859, 5.3641439142373315, 5.522861844079273, 6.236701112034723, 5.814728841873318]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8651691023731067, 1.5868479779979756, 1.4720452860987174, 1.5451304436405284, 1.5667973183787252, 1.8947378924791107, 1.6270722834147047]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9310686793903624, 1.7271033976763985, 1.6336439281634831, 1.8204729601209262, 1.8572637104737408, 2.1188432757253257, 1.933716334417995]}}