{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:50.607557", "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": "2021-Sep-14_to_2021-Sep-17_272.5_58.0"}, "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": 2021090002070}, "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 14 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 17 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 88675.53969799908}, "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": 58.0}, "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": 272.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "272.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 271.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 279.0}, "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": 58.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-89.0, 58.75], [-88.75, 58.65], [-88.68, 58.68], [-88.53, 59.03], [-88.0, 59.25], [-87.75, 59.15], [-87.5, 59.25], 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[-88.25, 56.5], [-88.12, 56.8], [-88.25, 56.85], [-88.5, 56.75], [-89.03, 56.97], [-89.18, 57.32], [-89.53, 57.47], [-89.75, 58.0], [-89.53, 58.53], [-89.0, 58.75]]]]}}, "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": {"2021-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-84.0, 57.75], [-83.47000000000003, 57.53], [-83.25, 57.0], [-83.47000000000003, 56.47], [-84.0, 56.25], [-84.52999999999997, 56.47], [-84.75, 57.0], [-84.52999999999997, 57.53], [-84.0, 57.75]]], [[[-89.52999999999997, 57.47], [-89.75, 58.0], [-89.52999999999997, 58.53], [-89.0, 58.75], [-88.75, 58.65], [-88.5, 58.75], [-88.25, 58.65], [-88.0, 58.75], [-87.75, 58.65], [-87.5, 58.75], [-87.25, 58.65], [-87.0, 58.75], [-86.47000000000003, 58.53], [-86.32, 58.18], [-85.97000000000003, 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"Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.68379492506989, 2.658366644068773, 4.006553406972661, 3.1742586644105866]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.987024113614268, 3.133268554697622, 4.955737038575023, 3.973797173373839]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.280679157517652, 1.3829942803804491, 2.143613878629685, 1.7437780006707662]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.392312668737062, 1.5191634159174627, 2.4483221238162876, 2.1674310718923797]}}