{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:57:51.030673", "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": "2025-Nov-22_to_2025-Nov-24_262.0_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": 2025110002031}, "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 22 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 24 2025"}, "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": 170816.7534886408}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "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": []}, "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": 262.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "262.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 254.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 264.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 45.47], [-105.75, 46.0], [-105.53, 46.53], [-105.0, 46.75], [-104.75, 46.65], [-104.5, 46.75], [-104.0, 46.54], [-103.5, 46.75], [-103.25, 46.65], [-103.0, 46.75], [-102.75, 46.65], [-102.5, 46.75], [-102.25, 46.65], [-102.18, 46.68], [-102.15, 46.75], [-102.25, 47.0], [-102.03, 47.53], [-101.68, 47.68], [-101.53, 48.03], [-101.0, 48.25], [-100.75, 48.15], [-100.62, 48.2], [-100.75, 48.5], [-100.65, 48.75], [-100.75, 49.0], [-100.53, 49.53], [-100.12, 49.7], [-100.25, 50.0], [-100.15, 50.25], [-100.25, 50.5], [-100.03, 51.03], [-99.5, 51.25], [-99.0, 51.04], [-98.5, 51.25], [-97.97, 51.03], [-97.82, 50.68], [-97.75, 50.65], [-97.5, 50.75], [-96.97, 50.53], [-96.82, 50.18], [-96.47, 50.03], [-96.32, 49.68], [-95.97, 49.53], [-95.75, 49.0], [-95.85, 48.75], [-95.82, 48.68], [-95.47, 48.53], [-95.25, 48.0], [-95.35, 47.75], [-95.25, 47.5], [-95.47, 46.97], [-95.82, 46.82], [-95.97, 46.47], [-96.5, 46.25], [-96.75, 46.35], [-96.82, 46.32], [-96.97, 45.97], [-97.5, 45.75], [-97.75, 45.85], [-98.0, 45.75], [-98.25, 45.85], [-98.32, 45.82], [-98.47, 45.47], [-98.82, 45.32], [-98.97, 44.97], [-99.5, 44.75], [-100.0, 44.96], [-100.5, 44.75], [-101.03, 44.97], [-101.18, 45.32], [-101.25, 45.35], [-101.32, 45.32], [-101.47, 44.97], [-102.0, 44.75], [-102.53, 44.97], [-102.68, 45.32], [-102.75, 45.35], [-103.0, 45.25], [-103.25, 45.35], [-103.32, 45.32], [-103.47, 44.97], [-104.0, 44.75], [-104.53, 44.97], [-104.68, 45.32], [-104.75, 45.35], [-105.0, 45.25], [-105.53, 45.47]]]]}, "2025-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 45.47], [-105.75, 46.0], [-105.53, 46.53], [-105.0, 46.75], [-104.75, 46.65], [-104.5, 46.75], [-104.0, 46.54], [-103.5, 46.75], [-103.25, 46.65], [-103.0, 46.75], [-102.75, 46.65], [-102.5, 46.75], [-102.25, 46.65], [-102.18, 46.68], [-102.15, 46.75], [-102.25, 47.0], [-102.03, 47.53], [-101.68, 47.68], [-101.53, 48.03], [-101.0, 48.25], [-100.75, 48.15], [-100.62, 48.2], [-100.75, 48.5], [-100.65, 48.75], [-100.75, 49.0], [-100.53, 49.53], [-100.12, 49.7], [-100.25, 50.0], [-100.15, 50.25], [-100.25, 50.5], [-100.03, 51.03], [-99.5, 51.25], [-99.0, 51.04], [-98.5, 51.25], [-97.97, 51.03], [-97.82, 50.68], [-97.75, 50.65], [-97.5, 50.75], [-96.97, 50.53], [-96.82, 50.18], [-96.47, 50.03], [-96.32, 49.68], [-95.97, 49.53], [-95.75, 49.0], [-95.85, 48.75], [-95.82, 48.68], [-95.47, 48.53], [-95.25, 48.0], [-95.35, 47.75], [-95.25, 47.5], [-95.47, 46.97], [-95.82, 46.82], [-95.97, 46.47], [-96.5, 46.25], [-96.75, 46.35], [-96.82, 46.32], [-96.97, 45.97], [-97.5, 45.75], [-97.75, 45.85], [-98.0, 45.75], [-98.25, 45.85], [-98.32, 45.82], [-98.47, 45.47], [-98.82, 45.32], [-98.97, 44.97], [-99.5, 44.75], [-100.0, 44.96], [-100.5, 44.75], [-101.03, 44.97], [-101.18, 45.32], [-101.25, 45.35], [-101.32, 45.32], [-101.47, 44.97], [-102.0, 44.75], [-102.53, 44.97], [-102.68, 45.32], [-102.75, 45.35], [-103.0, 45.25], [-103.25, 45.35], [-103.32, 45.32], [-103.47, 44.97], [-104.0, 44.75], [-104.53, 44.97], [-104.68, 45.32], [-104.75, 45.35], [-105.0, 45.25], [-105.53, 45.47]]]]}, "2025-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.53, 45.47], [-105.75, 46.0], [-105.53, 46.53], [-105.0, 46.75], [-104.75, 46.65], [-104.5, 46.75], [-104.0, 46.54], [-103.5, 46.75], [-103.25, 46.65], [-103.0, 46.75], [-102.75, 46.65], [-102.5, 46.75], [-102.25, 46.65], [-102.18, 46.68], [-102.15, 46.75], [-102.25, 47.0], [-102.03, 47.53], [-101.68, 47.68], [-101.53, 48.03], [-101.0, 48.25], [-100.75, 48.15], [-100.62, 48.2], [-100.75, 48.5], [-100.65, 48.75], [-100.75, 49.0], [-100.53, 49.53], [-100.12, 49.7], [-100.25, 50.0], [-100.15, 50.25], [-100.25, 50.5], [-100.03, 51.03], [-99.5, 51.25], [-99.0, 51.04], [-98.5, 51.25], [-97.97, 51.03], [-97.82, 50.68], [-97.75, 50.65], [-97.5, 50.75], [-96.97, 50.53], [-96.82, 50.18], [-96.47, 50.03], [-96.32, 49.68], [-95.97, 49.53], [-95.75, 49.0], [-95.85, 48.75], [-95.82, 48.68], [-95.47, 48.53], [-95.25, 48.0], [-95.35, 47.75], [-95.25, 47.5], [-95.47, 46.97], [-95.82, 46.82], 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[3.890439450643896, 4.260087306325033, 2.7052320526868243]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.058615620930993, 6.129389699300134, 5.728926595052087]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.849736753976409, 8.43208760938493, 7.111302742695113]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.888842600628323, 10.822883822184338, 8.056021232138391]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4270413284370376, 1.5296345954767554, 1.2924077135258096]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6512582730631629, 1.8490097202636508, 1.4063583088039349]}}