{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:13.818773", "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-Dec-12_to_2011-Dec-15_281.5_47.0"}, "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": 2011120002204}, "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": "December 12 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 15 2011"}, "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": 67809.6141500537}, "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": ["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": []}, "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": 47.0}, "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": 281.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "281.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 278.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 284.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.53, 47.53], [-81.18, 47.68], [-81.03, 48.03], [-80.5, 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[-75.47, 47.53], [-75.25, 47.0], [-75.47, 46.47], [-76.0, 46.25], [-76.25, 46.35], [-76.5, 46.25], [-76.75, 46.35], [-77.0, 46.25], [-77.25, 46.35], [-77.32, 46.32], [-77.46, 46.0], [-77.25, 45.5], [-77.47, 44.97], [-78.0, 44.75], [-78.25, 44.85], [-78.5, 44.75], [-78.75, 44.85], [-79.0, 44.75], [-79.25, 44.85], [-79.5, 44.75], [-80.03, 44.97], [-80.25, 45.5], [-80.15, 45.75], [-80.18, 45.82], [-80.25, 45.85], [-80.5, 45.75], [-80.75, 45.85], [-81.0, 45.75], [-81.53, 45.97], [-81.75, 46.5], [-81.65, 46.75], [-81.75, 47.0], [-81.65, 47.25]]]]}, "2011-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.65, 47.25], [-81.75, 47.5], [-81.53, 48.03], [-81.0, 48.25], [-80.75, 48.15], [-80.5, 48.25], [-80.25, 48.15], [-80.0, 48.25], [-79.75, 48.15], [-79.5, 48.25], [-79.25, 48.15], [-79.0, 48.25], [-78.75, 48.15], [-78.5, 48.25], [-78.25, 48.15], [-78.0, 48.25], [-77.47, 48.03], [-77.32, 47.68], [-77.25, 47.65], [-77.0, 47.75], [-76.75, 47.65], [-76.5, 47.75], [-76.25, 47.65], [-76.0, 47.75], [-75.47, 47.53], [-75.25, 47.0], [-75.47, 46.47], [-76.0, 46.25], [-76.25, 46.35], [-76.5, 46.25], [-76.75, 46.35], [-77.0, 46.25], [-77.25, 46.35], [-77.32, 46.32], [-77.46, 46.0], [-77.25, 45.5], [-77.47, 44.97], [-78.0, 44.75], [-78.25, 44.85], [-78.5, 44.75], [-78.75, 44.85], [-79.0, 44.75], [-79.25, 44.85], [-79.5, 44.75], [-80.03, 44.97], [-80.25, 45.5], [-80.15, 45.75], [-80.18, 45.82], [-80.25, 45.85], [-80.5, 45.75], [-80.75, 45.85], [-81.0, 45.75], [-81.53, 45.97], [-81.75, 46.5], [-81.65, 46.75], [-81.75, 47.0], [-81.65, 47.25]]]]}, "2011-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.65, 47.25], [-81.75, 47.5], [-81.53, 48.03], [-81.0, 48.25], [-80.75, 48.15], [-80.5, 48.25], [-80.25, 48.15], [-80.0, 48.25], [-79.75, 48.15], [-79.5, 48.25], [-79.25, 48.15], [-79.0, 48.25], [-78.75, 48.15], [-78.5, 48.25], [-78.25, 48.15], [-78.0, 48.25], [-77.47, 48.03], [-77.32, 47.68], [-77.25, 47.65], [-77.0, 47.75], [-76.75, 47.65], 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[0.8999293222626648, 1.1919251081561129, 0.978433260835402, 4.0575775320183425]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.6472837249652343, 2.1404603894574734, 1.989647992617904, 6.2085085444263655]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.21269650530592, 8.53666448401972, 8.58620413717741, 11.815548261031145]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.85146417761274, 9.26815230219205, 9.426059059243016, 13.108882365766931]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.247819076081587, 1.2837721103506943, 1.2382254529270167, 1.7153013725275301]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.298358965648257, 1.4131006927892988, 1.3031137540312236, 1.8912579322991392]}}