{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:27.271323", "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": "2023-Sep-27_to_2023-Oct-02_255.0_40.0"}, "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": 2023090002045}, "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 27 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 02 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 92750.77853092164}, "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": 40.0}, "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": 255.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 251.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 256.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-106.0, 37.96], [-106.5, 37.75], [-106.75, 37.85], [-107.0, 37.75], [-107.25, 37.85], [-107.5, 37.75], [-107.75, 37.85], [-108.0, 37.75], [-108.53, 37.97], [-108.75, 38.5], [-108.65, 38.75], [-108.75, 39.0], [-108.54, 39.5], [-108.68, 39.82], [-109.03, 39.97], [-109.25, 40.5], [-109.03, 41.03], [-108.5, 41.25], [-108.25, 41.15], [-108.18, 41.18], [-108.03, 41.53], [-107.5, 41.75], [-107.25, 41.65], [-107.0, 41.75], [-106.75, 41.65], [-106.5, 41.75], [-106.25, 41.65], [-106.18, 41.68], [-106.03, 42.03], [-105.5, 42.25], [-104.97, 42.03], [-104.75, 41.5], [-104.85, 41.25], [-104.82, 41.18], [-104.47, 41.03], [-104.25, 40.5], [-104.35, 40.25], [-104.32, 40.18], [-104.25, 40.15], [-104.0, 40.25], [-103.47, 40.03], [-103.25, 39.5], [-103.35, 39.25], [-103.25, 39.0], [-103.47, 38.47], [-103.82, 38.32], [-103.85, 38.25], [-103.75, 38.0], [-103.97, 37.47], [-104.5, 37.25], [-105.03, 37.47], [-105.18, 37.82], [-105.25, 37.85], [-105.5, 37.75], [-106.0, 37.96]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "C.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.75, 39.5], [-106.53, 40.03], [-106.0, 40.25], [-105.47, 40.03], [-105.25, 39.5], [-105.37, 39.2], [-104.97, 39.03], [-104.75, 38.5], [-104.97, 37.97], [-105.5, 37.75], [-106.0, 37.96], [-106.5, 37.75], [-107.03, 37.97], [-107.25, 38.5], [-107.03, 39.03], [-106.62, 39.2], [-106.75, 39.5]]]]}, "2023-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.75, 40.5], [-108.53, 41.03], [-108.18, 41.18], [-108.03, 41.53], [-107.5, 41.75], [-107.25, 41.65], [-107.0, 41.75], [-106.75, 41.65], [-106.5, 41.75], [-106.25, 41.65], [-106.18, 41.68], [-106.03, 42.03], [-105.5, 42.25], [-104.97, 42.03], [-104.75, 41.5], [-104.87, 41.2], [-104.47, 41.03], [-104.25, 40.5], [-104.35, 40.25], [-104.32, 40.18], [-104.25, 40.15], [-104.0, 40.25], [-103.47000000000003, 40.03], 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4.747077066617802}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.430968412760535, 15.321561772496864, 15.300125957250145, 14.98479585240176, 15.399345978811823, 18.454561980526762]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.569934507197559, 21.88421018647989, 23.009659193155414, 21.537040008327892, 22.149499439004387, 21.199659329723715]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.046194452489298, 4.737565743707748, 4.663242839378507, 4.447448467209534, 5.14214628722537, 4.9455577343546535]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.30484228412098, 6.183095758349566, 5.9005246387301895, 5.98355448746139, 7.297258021368066, 5.862289757280848]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2660106080171258, 1.356785249210438, 1.3614638499019458, 1.2869792781408544, 1.5216173693767516, 1.4131901161570553]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.320238412518555, 1.6411665527678223, 1.6571090573009237, 1.5146677142079976, 2.0625727360960746, 1.5512635776259605]}}