{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:19.939981", "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-Aug-15_to_2025-Aug-18_266.0_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": 2025080002034}, "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": "August 15 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 18 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": 133962.99511693287}, "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": 266.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "266.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 263.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 269.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-93.0, 29.25], [-92.75, 29.15], [-92.5, 29.25], [-92.25, 29.15], [-92.0, 29.25], [-91.75, 29.15], [-91.5, 29.25], [-90.97, 29.03], [-90.82, 28.68], [-90.47, 28.53], [-90.25, 28.0], [-90.47, 27.47], [-90.82, 27.32], [-90.85, 27.25], [-90.75, 27.0], [-90.97, 26.47], [-91.32, 26.32], [-91.47, 25.97], [-92.0, 25.75], [-92.25, 25.85], [-92.5, 25.75], [-92.75, 25.85], [-93.0, 25.75], [-93.53, 25.97], [-93.75, 26.5], [-93.65, 26.75], [-93.75, 27.0], [-93.65, 27.25], [-93.68, 27.32], [-93.75, 27.35], [-93.82, 27.32], [-93.97, 26.97], [-94.32, 26.82], [-94.47, 26.47], [-95.0, 26.25], [-95.25, 26.35], [-95.5, 26.25], [-95.75, 26.35], [-95.82, 26.32], [-95.97, 25.97], [-96.5, 25.75], [-97.03, 25.97], [-97.25, 26.5], [-97.15, 26.75], [-97.18, 26.82], [-97.53, 26.97], [-97.75, 27.5], [-97.65, 27.75], [-97.75, 28.0], [-97.53, 28.53], [-97.0, 28.75], [-96.75, 28.65], [-96.68, 28.68], [-96.53, 29.03], [-96.0, 29.25], [-95.75, 29.15], [-95.68, 29.18], [-95.53, 29.53], [-95.0, 29.75], [-94.75, 29.65], [-94.68, 29.68], [-94.53, 30.03], [-94.0, 30.25], [-93.47, 30.03], [-93.25, 29.5], [-93.35, 29.25], [-93.32, 29.18], [-93.25, 29.15], [-93.0, 29.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.75, 28.5], [-94.52999999999997, 29.03], [-94.0, 29.25], [-93.75, 29.15], [-93.5, 29.25], [-93.25, 29.15], [-93.0, 29.25], [-92.75, 29.15], [-92.5, 29.25], [-92.25, 29.15], [-92.0, 29.25], [-91.75, 29.15], [-91.5, 29.25], [-90.97000000000003, 29.03], [-90.82, 28.68], [-90.47000000000003, 28.53], [-90.25, 28.0], [-90.47000000000003, 27.47], [-90.82, 27.32], [-90.85000000000002, 27.25], [-90.75, 27.0], [-90.97000000000003, 26.47], [-91.32, 26.32], [-91.47000000000003, 25.97], [-92.0, 25.75], [-92.25, 25.85], [-92.5, 25.75], [-92.75, 25.85], [-93.0, 25.75], [-93.52999999999997, 25.97], 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evolution of mean t2m anomalies.", "value": [1.3650893343124981, 1.3445245745446872, 1.1964789228558952, 1.0967551627132428]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.7870022917380766, 1.665128546371136, 1.364076753066513, 1.4461768288643384]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5407147031338386, 1.6002747541779578, 1.4633336144494424, 1.4106395647641263]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0406967157189717, 1.8814830539228031, 1.7319554258642103, 1.6848726258394633]}}