{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:30.067065", "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-Oct-16_to_2025-Oct-19_272.5_34.0"}, "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": 2025100001834}, "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": "October 16 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 19 2025"}, "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": 92959.11250793496}, "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": 34.0}, "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": 274.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-85.25, 33.0], [-85.35, 32.75], [-85.25, 32.5], [-85.35, 32.25], [-85.25, 32.0], [-85.47, 31.47], [-86.0, 31.25], [-86.25, 31.35], [-86.5, 31.25], [-87.0, 31.46], [-87.5, 31.25], [-87.75, 31.35], [-88.0, 31.25], [-88.25, 31.35], [-88.5, 31.25], [-88.75, 31.35], [-89.0, 31.25], [-89.53, 31.47], [-89.75, 32.0], [-89.53, 32.53], [-89.18, 32.68], [-89.15, 32.75], [-89.25, 33.0], [-89.15, 33.25], [-89.25, 33.5], [-89.15, 33.75], [-89.25, 34.0], [-89.15, 34.25], [-89.25, 34.5], [-89.03, 35.03], [-88.5, 35.25], [-88.25, 35.15], [-88.18, 35.18], [-88.03, 35.53], [-87.5, 35.75], [-87.25, 35.65], [-87.0, 35.75], [-86.75, 35.65], [-86.5, 35.75], [-85.97, 35.53], [-85.75, 35.0], [-85.85, 34.75], [-85.75, 34.5], [-85.85, 34.25], [-85.75, 34.0], [-85.85, 33.75], [-85.82, 33.68], [-85.47, 33.53], [-85.25, 33.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-10-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.0, 32.25], [-86.52999999999997, 32.47], [-86.75, 33.0], [-86.52999999999997, 33.53], [-86.0, 33.75], [-85.47000000000003, 33.53], [-85.25, 33.0], [-85.47000000000003, 32.47], [-86.0, 32.25]]], [[[-89.02999999999997, 33.97], [-89.25, 34.5], [-89.02999999999997, 35.03], [-88.5, 35.25], [-88.25, 35.15], [-88.18, 35.18], [-88.02999999999997, 35.53], [-87.5, 35.75], [-87.25, 35.65], [-87.0, 35.75], [-86.75, 35.65], [-86.5, 35.75], [-85.97000000000003, 35.53], [-85.75, 35.0], [-85.97000000000003, 34.47], [-86.5, 34.25], [-86.75, 34.35], [-86.87, 34.3], [-86.75, 34.0], [-86.97000000000003, 33.47], [-87.5, 33.25], [-88.02999999999997, 33.47], [-88.18, 33.82], [-88.25, 33.85], [-88.5, 33.75], [-89.02999999999997, 33.97]]]]}, "2025-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.14999999999998, 32.75], [-89.25, 33.0], [-89.14999999999998, 33.25], [-89.25, 33.5], [-89.14999999999998, 33.75], [-89.25, 34.0], [-89.14999999999998, 34.25], [-89.25, 34.5], [-89.02999999999997, 35.03], [-88.5, 35.25], [-88.25, 35.15], [-88.18, 35.18], [-88.02999999999997, 35.53], [-87.5, 35.75], [-87.25, 35.65], [-87.0, 35.75], [-86.75, 35.65], [-86.5, 35.75], [-85.97000000000003, 35.53], [-85.75, 35.0], [-85.85000000000002, 34.75], [-85.75, 34.5], [-85.85000000000002, 34.25], [-85.75, 34.0], [-85.85000000000002, 33.75], [-85.82, 33.68], [-85.47000000000003, 33.53], [-85.25, 33.0], [-85.35000000000002, 32.75], [-85.25, 32.5], [-85.35000000000002, 32.25], [-85.25, 32.0], [-85.47000000000003, 31.47], [-86.0, 31.25], [-86.25, 31.35], [-86.5, 31.25], [-87.0, 31.46], [-87.5, 31.25], [-87.75, 31.35], [-88.0, 31.25], [-88.25, 31.35], [-88.5, 31.25], [-88.75, 31.35], [-89.0, 31.25], [-89.52999999999997, 31.47], [-89.75, 32.0], [-89.52999999999997, 32.53], [-89.18, 32.68], [-89.14999999999998, 32.75]]]]}, "2025-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.14999999999998, 32.75], [-89.25, 33.0], [-89.14999999999998, 33.25], [-89.25, 33.5], [-89.14999999999998, 33.75], [-89.25, 34.0], [-89.14999999999998, 34.25], [-89.25, 34.5], [-89.02999999999997, 35.03], [-88.5, 35.25], [-88.25, 35.15], [-88.18, 35.18], [-88.02999999999997, 35.53], [-87.5, 35.75], [-87.25, 35.65], [-87.0, 35.75], [-86.75, 35.65], [-86.5, 35.75], [-85.97000000000003, 35.53], [-85.75, 35.0], [-85.85000000000002, 34.75], [-85.75, 34.5], [-85.85000000000002, 34.25], [-85.75, 34.0], [-85.85000000000002, 33.75], [-85.82, 33.68], [-85.47000000000003, 33.53], [-85.25, 33.0], [-85.35000000000002, 32.75], [-85.25, 32.5], [-85.35000000000002, 32.25], [-85.25, 32.0], [-85.47000000000003, 31.47], [-86.0, 31.25], [-86.25, 31.35], [-86.5, 31.25], [-87.0, 31.46], [-87.5, 31.25], [-87.75, 31.35], [-88.0, 31.25], [-88.25, 31.35], [-88.5, 31.25], [-88.75, 31.35], [-89.0, 31.25], [-89.52999999999997, 31.47], [-89.75, 32.0], [-89.52999999999997, 32.53], [-89.18, 32.68], [-89.14999999999998, 32.75]]]]}, 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[-89.52999999999997, 32.53], [-89.18, 32.68], [-89.14999999999998, 32.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.145343361108701}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.418547450081659}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.231096431187268, 22.571233650490115, 23.596368266918034, 22.204860941569052]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.832786814371786, 23.949267323811853, 25.192772165934286, 23.962505594889365]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.475560317698596, 5.01226984311195, 6.352166232308954, 5.031567063125667]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.7549902833104625, 5.991537881530178, 7.145343361108701, 5.4366489613705085]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3227460199850918, 1.4713372335330135, 1.7736144296091394, 1.3879102652123163]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3660193590987089, 1.6770903944604736, 1.9014905179528419, 1.5007430394290748]}}