{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:29.026405", "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": "2011-Sep-18_to_2011-Sep-20_285.5_57.0"}, "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": 2011090002388}, "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 18 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 20 2011"}, "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": 155042.0624525127}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["Hudson Bay"]}, "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": 57.0}, "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": 285.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "285.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 281.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 291.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.5, 59.25], [-77.25, 59.15], [-77.0, 59.25], [-76.75, 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54.97], [-76.18, 55.32], [-76.53, 55.47], [-76.75, 56.0], [-76.65, 56.25], [-76.68, 56.32], [-77.03, 56.47], [-77.18, 56.82], [-77.53, 56.97], [-77.68, 57.32], [-77.75, 57.35], [-78.0, 57.25], [-78.53, 57.47], [-78.75, 58.0], [-78.53, 58.53], [-78.18, 58.68], [-78.03, 59.03], [-77.5, 59.25]]]]}, "2011-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.5, 59.25], [-77.25, 59.15], [-77.0, 59.25], [-76.75, 59.15], [-76.5, 59.25], [-76.0, 59.04], [-75.5, 59.25], [-74.97, 59.03], [-74.82, 58.68], [-74.75, 58.65], [-74.68, 58.68], [-74.53, 59.03], [-74.0, 59.25], [-73.75, 59.15], [-73.5, 59.25], [-72.97, 59.03], [-72.82, 58.68], [-72.75, 58.65], [-72.5, 58.75], [-72.25, 58.65], [-72.0, 58.75], [-71.75, 58.65], [-71.5, 58.75], [-71.25, 58.65], [-71.0, 58.75], [-70.75, 58.65], [-70.5, 58.75], [-70.25, 58.65], [-70.0, 58.75], [-69.75, 58.65], [-69.5, 58.75], [-68.97, 58.53], [-68.82, 58.18], [-68.47, 58.03], [-68.25, 57.5], [-68.47, 56.97], [-68.82, 56.82], [-68.97, 56.47], [-69.5, 56.25], [-69.75, 56.35], [-69.82, 56.32], [-69.97, 55.97], [-70.32, 55.82], [-70.47, 55.47], [-70.82, 55.32], [-70.97, 54.97], [-71.5, 54.75], [-71.75, 54.85], [-71.82, 54.82], [-71.97, 54.47], [-72.5, 54.25], [-72.75, 54.35], [-73.0, 54.25], [-73.25, 54.35], [-73.5, 54.25], [-73.75, 54.35], [-74.0, 54.25], [-74.25, 54.35], [-74.5, 54.25], [-75.03, 54.47], [-75.18, 54.82], [-75.25, 54.85], [-75.5, 54.75], [-76.03, 54.97], [-76.18, 55.32], [-76.53, 55.47], [-76.75, 56.0], [-76.65, 56.25], [-76.68, 56.32], [-77.03, 56.47], [-77.18, 56.82], [-77.53, 56.97], [-77.68, 57.32], [-77.75, 57.35], [-78.0, 57.25], [-78.53, 57.47], [-78.75, 58.0], [-78.53, 58.53], [-78.18, 58.68], [-78.03, 59.03], [-77.5, 59.25]]]]}, "2011-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.5, 59.25], [-77.25, 59.15], [-77.0, 59.25], [-76.75, 59.15], [-76.5, 59.25], [-76.0, 59.04], [-75.5, 59.25], [-74.97, 59.03], [-74.82, 58.68], [-74.75, 58.65], [-74.68, 58.68], [-74.53, 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"anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.361540917899106, 7.917732174137029, 5.372110575467673]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5083506453452757, 2.214128147174528, 1.5867239663352957]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9318228088599991, 2.5987811728270716, 1.9078160924745968]}}