{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:08.604730", "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": "2012-Dec-16_to_2012-Dec-18_280.5_41.0"}, "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": 2012120002213}, "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 16 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 18 2012"}, "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": 74990.39685486307}, "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"]}, "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": 41.0}, "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": 280.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "280.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 278.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 282.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.15, 43.75], [-82.25, 44.0], [-82.03, 44.53], [-81.68, 44.68], [-81.53, 45.03], [-81.0, 45.25], [-80.75, 45.15], [-80.5, 45.25], [-79.97, 45.03], [-79.82, 44.68], [-79.47, 44.53], [-79.32, 44.18], [-78.97, 44.03], [-78.82, 43.68], [-78.75, 43.65], [-78.5, 43.75], [-78.25, 43.65], [-78.0, 43.75], [-77.47, 43.53], [-77.25, 43.0], [-77.47, 42.47], [-77.82, 42.32], [-77.85, 42.25], [-77.75, 42.0], [-77.85, 41.75], [-77.75, 41.5], [-77.85, 41.25], [-77.75, 41.0], [-77.97, 40.47], [-78.32, 40.32], [-78.35, 40.25], [-78.25, 40.0], [-78.47, 39.47], [-79.0, 39.25], [-79.53, 39.47], [-79.75, 40.0], [-79.65, 40.25], [-79.68, 40.32], [-80.03, 40.47], [-80.25, 41.0], [-80.15, 41.25], [-80.25, 41.5], [-80.15, 41.75], [-80.2, 41.88], [-80.5, 41.75], [-81.03, 41.97], [-81.18, 42.32], [-81.25, 42.35], [-81.5, 42.25], [-82.03, 42.47], [-82.25, 43.0], [-82.15, 43.25], [-82.25, 43.5], [-82.15, 43.75]]]]}, "2012-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.15, 43.75], [-82.25, 44.0], [-82.03, 44.53], [-81.68, 44.68], [-81.53, 45.03], [-81.0, 45.25], [-80.75, 45.15], [-80.5, 45.25], [-79.97, 45.03], [-79.82, 44.68], [-79.47, 44.53], [-79.32, 44.18], [-78.97, 44.03], [-78.82, 43.68], [-78.75, 43.65], [-78.5, 43.75], [-78.25, 43.65], [-78.0, 43.75], [-77.47, 43.53], [-77.25, 43.0], [-77.47, 42.47], [-77.82, 42.32], [-77.85, 42.25], [-77.75, 42.0], [-77.85, 41.75], [-77.75, 41.5], [-77.85, 41.25], [-77.75, 41.0], [-77.97, 40.47], [-78.32, 40.32], [-78.35, 40.25], [-78.25, 40.0], [-78.47, 39.47], [-79.0, 39.25], [-79.53, 39.47], [-79.75, 40.0], [-79.65, 40.25], [-79.68, 40.32], [-80.03, 40.47], [-80.25, 41.0], [-80.15, 41.25], [-80.25, 41.5], [-80.15, 41.75], [-80.2, 41.88], [-80.5, 41.75], [-81.03, 41.97], [-81.18, 42.32], [-81.25, 42.35], [-81.5, 42.25], [-82.03, 42.47], [-82.25, 43.0], [-82.15, 43.25], [-82.25, 43.5], [-82.15, 43.75]]]]}, "2012-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.15, 43.75], [-82.25, 44.0], [-82.03, 44.53], [-81.68, 44.68], [-81.53, 45.03], [-81.0, 45.25], [-80.75, 45.15], [-80.5, 45.25], [-79.97, 45.03], [-79.82, 44.68], [-79.47, 44.53], [-79.32, 44.18], [-78.97, 44.03], [-78.82, 43.68], [-78.75, 43.65], [-78.5, 43.75], [-78.25, 43.65], [-78.0, 43.75], [-77.47, 43.53], [-77.25, 43.0], [-77.47, 42.47], [-77.82, 42.32], [-77.85, 42.25], [-77.75, 42.0], [-77.85, 41.75], [-77.75, 41.5], [-77.85, 41.25], [-77.75, 41.0], [-77.97, 40.47], [-78.32, 40.32], [-78.35, 40.25], [-78.25, 40.0], [-78.47, 39.47], [-79.0, 39.25], [-79.53, 39.47], [-79.75, 40.0], [-79.65, 40.25], [-79.68, 40.32], [-80.03, 40.47], [-80.25, 41.0], [-80.15, 41.25], [-80.25, 41.5], [-80.15, 41.75], [-80.2, 41.88], [-80.5, 41.75], [-81.03, 41.97], [-81.18, 42.32], [-81.25, 42.35], [-81.5, 42.25], [-82.03, 42.47], [-82.25, 43.0], [-82.15, 43.25], [-82.25, 43.5], [-82.15, 43.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.485584499945276}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.07319600466328}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.254919638515673, 6.961053003767233, 4.443525726231599]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.492414959342511, 10.034999031256802, 6.137506429784423]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.602301764432393, 8.499841581974245, 6.1174446675831895]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.832294055396915, 10.485584499945276, 7.2378035843959765]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4545822305396499, 1.8528733153966646, 1.35261063906788]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8859292206729092, 2.206755205454268, 1.5596416866335314]}}