{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:23.136563", "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-Sep-23_to_2022-Sep-25_271.5_57.0"}, "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": 2022090002554}, "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": "September 23 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 25 2022"}, "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": 137830.87737982988}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 57.0}, "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": 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": 269.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 276.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-91.25, 59.5], [-91.03, 60.03], [-90.68, 60.18], [-90.65, 60.25], [-90.75, 60.5], [-90.53, 61.03], [-90.0, 61.25], 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[-90.15, 57.75], [-90.18, 57.82], [-90.25, 57.85], [-90.5, 57.75], [-91.03, 57.97], [-91.25, 58.5], [-91.15, 58.75], [-91.25, 59.0], [-91.15, 59.25], [-91.25, 59.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.25, 59.0], [-91.14999999999998, 59.25], [-91.25, 59.5], [-91.02999999999997, 60.03], [-90.68, 60.18], [-90.64999999999998, 60.25], [-90.75, 60.5], [-90.52999999999997, 61.03], [-90.0, 61.25], [-89.75, 61.15], [-89.5, 61.25], [-89.25, 61.15], [-89.0, 61.25], [-88.75, 61.15], [-88.5, 61.25], [-87.97000000000003, 61.03], [-87.82, 60.68], [-87.75, 60.65], [-87.5, 60.75], [-86.97000000000003, 60.53], [-86.82, 60.18], [-86.75, 60.15], [-86.5, 60.25], [-85.97000000000003, 60.03], [-85.82, 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[-91.25, 58.5], [-91.14999999999998, 58.75], [-91.25, 59.0]]]]}, "2022-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.25, 59.0], [-91.14999999999998, 59.25], [-91.25, 59.5], [-91.02999999999997, 60.03], [-90.68, 60.18], [-90.64999999999998, 60.25], [-90.75, 60.5], [-90.52999999999997, 61.03], [-90.0, 61.25], [-89.75, 61.15], [-89.5, 61.25], [-89.25, 61.15], [-89.0, 61.25], [-88.75, 61.15], [-88.5, 61.25], [-87.97000000000003, 61.03], [-87.82, 60.68], [-87.75, 60.65], [-87.5, 60.75], [-86.97000000000003, 60.53], [-86.82, 60.18], [-86.75, 60.15], [-86.5, 60.25], [-85.97000000000003, 60.03], [-85.82, 59.68], [-85.75, 59.65], [-85.5, 59.75], [-85.25, 59.65], [-85.0, 59.75], [-84.75, 59.65], [-84.5, 59.75], [-83.97000000000003, 59.53], [-83.82, 59.18], [-83.47000000000003, 59.03], [-83.25, 58.5], [-83.35000000000002, 58.25], [-83.25, 58.0], [-83.47000000000003, 57.47], [-83.82, 57.32], [-83.97000000000003, 56.97], [-84.5, 56.75], [-84.75, 56.85], [-85.0, 56.75], 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anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.138653789108126, 3.6693038072515805, 2.938223523223453]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.72436910883107, 6.7789470645359415, 5.373568425062672]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6078836205054001, 1.8389557010187074, 1.487445613801629]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9696056366590353, 2.1955992154267903, 1.7383424819047097]}}