{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:13.429388", "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-28_to_2012-Dec-31_307.0_46.0"}, "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": 2012120002781}, "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 28 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 31 2012"}, "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": 93555.43855237993}, "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", "N.Atlantic-Ocean"]}, "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": ["Gulf of St. Lawrence", "Labrador Sea", "North Atlantic Ocean"]}, "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": 46.0}, "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": 307.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "307.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 307.75}, "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": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.53, 45.97], [-60.75, 46.5], [-60.53, 47.03], [-60.0, 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46.3], [-56.82, 46.18], [-56.75, 46.15], [-56.62, 46.2]]]]}, "2012-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.53, 45.97], [-60.75, 46.5], [-60.53, 47.03], [-60.0, 47.25], [-59.75, 47.15], [-59.5, 47.25], [-59.25, 47.15], [-59.0, 47.25], [-58.75, 47.15], [-58.5, 47.25], [-57.97, 47.03], [-57.82, 46.68], [-57.75, 46.65], [-57.62, 46.7], [-57.75, 47.0], [-57.53, 47.53], [-57.18, 47.68], [-57.03, 48.03], [-56.5, 48.25], [-56.25, 48.15], [-56.0, 48.25], [-55.47, 48.03], [-55.3, 47.62], [-55.18, 47.68], [-55.03, 48.03], [-54.68, 48.18], [-54.53, 48.53], [-54.0, 48.75], [-53.75, 48.65], [-53.5, 48.75], [-53.25, 48.65], [-53.0, 48.75], [-52.47, 48.53], [-52.25, 48.0], [-52.37, 47.7], [-51.97, 47.53], [-51.75, 47.0], [-51.85, 46.75], [-51.75, 46.5], [-51.85, 46.25], [-51.75, 46.0], [-51.97, 45.47], [-52.32, 45.32], [-52.47, 44.97], [-53.0, 44.75], [-53.25, 44.85], [-53.5, 44.75], [-54.03, 44.97], [-54.18, 45.32], [-54.25, 45.35], [-54.5, 45.25], [-54.75, 45.35], 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[-53.0, 44.75], [-53.25, 44.85], [-53.5, 44.75], [-54.03, 44.97], [-54.18, 45.32], [-54.25, 45.35], [-54.5, 45.25], [-54.75, 45.35], [-55.0, 45.25], [-55.25, 45.35], [-55.5, 45.25], [-56.03, 45.47], [-56.18, 45.82], [-56.53, 45.97], [-56.68, 46.32], [-56.75, 46.35], [-57.0, 46.25], [-57.53, 46.47], [-57.75, 47.0], [-57.53, 47.53], [-57.18, 47.68], [-57.03, 48.03], [-56.5, 48.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.586660228356493}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.0297617691509435}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.553036745593602, 3.8143942207731243, 3.4016509011701146, 3.599600463179968]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.512513306771723, 5.563717057656788, 5.014586517810699, 5.035752597644489]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.9654554897042686, 4.023950537908686, 3.837657575375843, 4.326010333342314]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.640674968500434, 5.183429487116939, 5.366626752810987, 6.586660228356493]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3796203738383597, 1.4090696313646636, 1.3216216718969285, 1.4570210052596564]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5433829269555952, 1.6353295892825472, 1.51800514328896, 1.5954713940259475]}}