{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:20.656094", "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-08_to_2023-Sep-12_226.5_56.0"}, "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": 2023090001159}, "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 08 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 12 2023"}, "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": 62965.62786307177}, "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": ["Canada", "United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 56.0}, "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": 226.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "226.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 222.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 227.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-137.5, 59.75], [-137.25, 59.65], [-137.0, 59.75], [-136.75, 59.65], [-136.5, 59.75], [-136.25, 59.65], [-136.0, 59.75], [-135.7, 59.63], [-135.53, 60.03], [-135.0, 60.25], [-134.47, 60.03], [-134.32, 59.68], [-133.97, 59.53], [-133.82, 59.18], [-133.47, 59.03], [-133.32, 58.68], [-133.25, 58.65], [-133.0, 58.75], [-132.47, 58.53], [-132.25, 58.0], [-132.35, 57.75], [-132.25, 57.5], [-132.35, 57.25], [-132.32, 57.18], [-131.97, 57.03], [-131.75, 56.5], [-131.97, 55.97], [-132.32, 55.82], [-132.47, 55.47], [-132.82, 55.32], [-132.97, 54.97], [-133.5, 54.75], [-134.03, 54.97], [-134.18, 55.32], [-134.53, 55.47], [-134.68, 55.82], [-135.03, 55.97], [-135.18, 56.32], [-135.25, 56.35], [-135.5, 56.25], [-136.03, 56.47], [-136.18, 56.82], [-136.25, 56.85], [-136.5, 56.75], [-137.03, 56.97], [-137.25, 57.5], [-137.03, 58.03], [-136.68, 58.18], [-136.62, 58.3], [-136.75, 58.35], [-137.0, 58.25], [-137.25, 58.35], [-137.5, 58.25], [-138.03, 58.47], [-138.25, 59.0], [-138.03, 59.53], [-137.5, 59.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-137.53, 59.53], [-137.0, 59.75], [-136.47, 59.53], [-136.25, 59.0], [-136.47, 58.47], [-137.0, 58.25], [-137.53, 58.47], [-137.75, 59.0], [-137.53, 59.53]]]]}, "2023-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-137.5, 58.25], [-138.03, 58.47], [-138.25, 59.0], [-138.03, 59.53], [-137.5, 59.75], [-137.25, 59.65], [-137.0, 59.75], [-136.75, 59.65], [-136.5, 59.75], [-136.25, 59.65], [-136.0, 59.75], [-135.7, 59.63], [-135.53, 60.03], [-135.0, 60.25], [-134.47, 60.03], [-134.32, 59.68], [-133.97, 59.53], [-133.82, 59.18], [-133.47, 59.03], [-133.32, 58.68], [-133.25, 58.65], [-133.0, 58.75], [-132.47, 58.53], [-132.25, 58.0], [-132.35, 57.75], [-132.25, 57.5], [-132.35, 57.25], [-132.32, 57.18], [-131.97, 57.03], [-131.75, 56.5], [-131.97, 55.97], [-132.32, 55.82], [-132.47, 55.47], [-132.82, 55.32], [-132.97, 54.97], [-133.5, 54.75], [-134.03, 54.97], [-134.18, 55.32], [-134.53, 55.47], [-134.68, 55.82], [-135.03, 55.97], [-135.18, 56.32], [-135.25, 56.35], [-135.5, 56.25], [-136.03, 56.47], [-136.18, 56.82], [-136.25, 56.85], [-136.5, 56.75], [-137.03, 56.97], [-137.25, 57.5], [-137.03, 58.03], [-136.68, 58.18], [-136.62, 58.3], [-136.75, 58.35], [-137.0, 58.25], [-137.25, 58.35], [-137.5, 58.25]]]]}, "2023-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-137.5, 58.25], [-138.03, 58.47], [-138.25, 59.0], [-138.03, 59.53], [-137.5, 59.75], [-137.25, 59.65], [-137.0, 59.75], [-136.75, 59.65], [-136.5, 59.75], [-136.25, 59.65], [-136.0, 59.75], [-135.7, 59.63], [-135.53, 60.03], [-135.0, 60.25], [-134.47, 60.03], [-134.32, 59.68], [-133.97, 59.53], [-133.82, 59.18], [-133.47, 59.03], [-133.32, 58.68], [-133.25, 58.65], [-133.0, 58.75], [-132.47, 58.53], [-132.25, 58.0], [-132.35, 57.75], 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2.1006543513105953]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.312674012426271, 3.417826776354275, 4.2116872515751425, 4.389962541955867, 2.715197600378474]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2506119784281018, 1.7500665587365063, 2.1674175281339503, 1.8417893382401702, 1.3338279944193028]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2506119784281018, 2.697479979473091, 3.1602706326582903, 2.409278818537853, 1.3372521609725487]}}