{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:42.310305", "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": "2024-Feb-26_to_2024-Feb-28_271.5_36.0"}, "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": 2024020001890}, "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": "February 26 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 28 2024"}, "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": 171003.5600076581}, "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": 36.0}, "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": 265.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 277.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-95.25, 31.0], [-95.03, 31.53], [-94.5, 31.75], [-94.25, 31.65], [-94.18, 31.68], [-94.03, 32.03], [-93.68, 32.18], 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36.75], [-83.75, 36.85], [-83.82, 36.82], [-83.97, 36.47], [-84.32, 36.32], [-84.47, 35.97], [-84.82, 35.82], [-84.97, 35.47], [-85.32, 35.32], [-85.47, 34.97], [-86.0, 34.75], [-86.25, 34.85], [-86.32, 34.82], [-86.47, 34.47], [-87.0, 34.25], [-87.25, 34.35], [-87.5, 34.25], [-87.75, 34.35], [-88.0, 34.25], [-88.25, 34.35], [-88.32, 34.32], [-88.47, 33.97], [-89.0, 33.75], [-89.25, 33.85], [-89.5, 33.75], [-89.75, 33.85], [-90.0, 33.75], [-90.25, 33.85], [-90.32, 33.82], [-90.35, 33.75], [-90.25, 33.5], [-90.47, 32.97], [-90.82, 32.82], [-90.97, 32.47], [-91.32, 32.32], [-91.47, 31.97], [-91.82, 31.82], [-91.97, 31.47], [-92.5, 31.25], [-92.75, 31.35], [-92.82, 31.32], [-92.97, 30.97], [-93.32, 30.82], [-93.47, 30.47], [-94.0, 30.25], [-94.25, 30.35], [-94.5, 30.25], [-95.03, 30.47], [-95.25, 31.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.5, 30.25], [-95.02999999999997, 30.47], [-95.25, 31.0], [-95.02999999999997, 31.53], [-94.5, 31.75], [-94.25, 31.65], [-94.18, 31.68], [-94.02999999999997, 32.03], [-93.68, 32.18], [-93.64999999999998, 32.25], [-93.75, 32.5], [-93.52999999999997, 33.03], [-93.18, 33.18], [-93.14999999999998, 33.25], [-93.25, 33.5], [-93.14999999999998, 33.75], [-93.25, 34.0], [-93.02999999999997, 34.53], [-92.5, 34.75], [-91.97000000000003, 34.53], [-91.82, 34.18], [-91.75, 34.15], [-91.68, 34.18], [-91.52999999999997, 34.53], [-91.18, 34.68], [-91.02999999999997, 35.03], [-90.5, 35.25], [-90.25, 35.15], [-90.18, 35.18], [-90.02999999999997, 35.53], [-89.68, 35.68], [-89.52999999999997, 36.03], [-89.18, 36.18], [-89.02999999999997, 36.53], [-88.68, 36.68], [-88.52999999999997, 37.03], [-88.0, 37.25], [-87.75, 37.15], [-87.5, 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"value": [21.004457075365337, 23.079482048930004, 20.485560854574544]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.46423094017004, 11.342621945474658, 8.259064493373122]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.130535417929309, 13.181061714437988, 10.007071430979238]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.560901240026358, 2.0964005385129982, 1.5396018582173208]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8328798982776664, 2.4120739827927244, 1.814663514867652]}}