{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:10.579636", "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-Sep-28_to_2025-Oct-02_266.5_28.0"}, "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": 2025090002804}, "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 28 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 02 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 133067.48322747703}, "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": ["United States"]}, "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": 28.0}, "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": 266.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "266.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 265.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 272.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-94.25, 26.35], [-94.5, 26.25], [-95.03, 26.47], [-95.18, 26.82], [-95.53, 26.97], [-95.75, 27.5], [-95.65, 27.75], 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26.47], [-93.5, 26.25], [-93.75, 26.35], [-94.0, 26.25], [-94.25, 26.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "E.North-America", "N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.18, 28.18], [-94.02999999999997, 28.53], [-93.5, 28.75], [-93.25, 28.65], [-93.0, 28.75], [-92.47000000000003, 28.53], [-92.25, 28.0], [-92.47000000000003, 27.47], [-93.0, 27.25], [-93.25, 27.35], [-93.32, 27.32], [-93.35000000000002, 27.25], [-93.25, 27.0], [-93.47000000000003, 26.47], [-94.0, 26.25], [-94.25, 26.35], [-94.5, 26.25], [-95.02999999999997, 26.47], [-95.25, 27.0], [-95.02999999999997, 27.53], [-94.68, 27.68], [-94.52999999999997, 28.03], [-94.18, 28.18]]], [[[-89.68, 30.18], [-89.52999999999997, 30.53], [-89.0, 30.75], 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"evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.842097681218945, 28.215331013997456, 28.144260479155093, 28.071249551484073, 27.963380674331916]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.282460784912132, 28.47029520670577, 28.587712860107445, 28.326874033610068, 28.18488210042318]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6990434290632999, 1.9263329495216726, 1.9898158320410315, 1.905512938625214, 2.012796349818213]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.606564007522536, 2.98448581882559, 3.4527609593095576, 3.241912192179882, 2.933394823508422]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2358706501435175, 1.4029806574315842, 1.3492812420015907, 1.2853461599322398, 1.2549236048978767]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.391822542698197, 1.700657498390349, 1.5399323069885675, 1.420996881984304, 1.401208400721704]}}