{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:54.598143", "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": "2017-Sep-05_to_2017-Sep-08_305.5_49.5"}, "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": 2017090001299}, "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 05 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 08 2017"}, "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": 295689.0054175177}, "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", "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": ["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": 49.5}, "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": 305.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.5\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": 312.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.97, 50.03], [-53.8, 49.62], [-53.5, 49.75], [-52.97, 49.53], [-52.75, 49.0], [-52.97, 48.47], [-53.5, 48.25], [-54.03, 48.47], [-54.2, 48.88], [-54.5, 48.75], [-55.03, 48.97], [-55.25, 49.5], [-55.03, 50.03], [-54.5, 50.25], [-53.97, 50.03]]], [[[-56.53, 48.97], [-56.75, 49.5], [-56.53, 50.03], [-56.0, 50.25], [-55.47, 50.03], [-55.25, 49.5], [-55.47, 48.97], [-56.0, 48.75], [-56.53, 48.97]]]]}, "2017-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.75, 49.5], [-60.53, 50.03], [-60.18, 50.18], [-60.03, 50.53], [-59.5, 50.75], [-59.25, 50.65], [-59.0, 50.75], [-58.75, 50.65], [-58.68, 50.68], [-58.65, 50.75], [-58.75, 51.0], [-58.53, 51.53], [-58.0, 51.75], [-57.75, 51.65], [-57.5, 51.75], [-57.25, 51.65], [-57.0, 51.75], [-56.75, 51.65], [-56.5, 51.75], [-56.25, 51.65], [-56.0, 51.75], [-55.75, 51.65], [-55.5, 51.75], [-54.97, 51.53], [-54.75, 51.0], [-54.53, 51.53], [-54.0, 51.75], [-53.75, 51.65], [-53.68, 51.68], [-53.53, 52.03], [-53.0, 52.25], [-52.75, 52.15], [-52.5, 52.25], [-52.25, 52.15], [-52.0, 52.25], [-51.75, 52.15], [-51.5, 52.25], [-51.25, 52.15], [-51.0, 52.25], [-50.75, 52.15], [-50.5, 52.25], [-50.25, 52.15], [-50.0, 52.25], [-49.75, 52.15], [-49.5, 52.25], [-48.97, 52.03], [-48.82, 51.68], [-48.47, 51.53], [-48.32, 51.18], [-47.97, 51.03], [-47.82, 50.68], [-47.75, 50.65], [-47.5, 50.75], [-46.97, 50.53], [-46.75, 50.0], [-46.97, 49.47], [-47.32, 49.32], [-47.47, 48.97], [-48.0, 48.75], [-48.25, 48.85], [-48.5, 48.75], [-48.75, 48.85], [-49.0, 48.75], [-49.53, 48.97], [-49.75, 49.5], [-49.97, 48.97], [-50.32, 48.82], [-50.47, 48.47], [-51.0, 48.25], [-51.25, 48.35], [-51.32, 48.32], [-51.47, 47.97], [-51.82, 47.82], [-51.97, 47.47], [-52.32, 47.32], [-52.47, 46.97], [-53.0, 46.75], [-53.25, 46.85], [-53.5, 46.75], [-54.03, 46.97], [-54.18, 47.32], [-54.25, 47.35], [-54.32, 47.32], [-54.47, 46.97], [-55.0, 46.75], [-55.25, 46.85], [-55.5, 46.75], [-56.03, 46.97], [-56.18, 47.32], [-56.25, 47.35], [-56.32, 47.32], [-56.35, 47.25], [-56.25, 47.0], [-56.47, 46.47], [-57.0, 46.25], [-57.5, 46.46], [-58.0, 46.25], [-58.25, 46.35], [-58.32, 46.32], [-58.47, 45.97], [-59.0, 45.75], [-59.25, 45.85], [-59.5, 45.75], [-60.03, 45.97], [-60.25, 46.5], [-60.15, 46.75], [-60.25, 47.0], [-60.04, 47.5], [-60.25, 48.0], [-60.15, 48.25], [-60.25, 48.5], [-60.15, 48.75], [-60.18, 48.82], [-60.53, 48.97], [-60.75, 49.5]], [[-54.87, 50.7], [-54.75, 50.65], [-54.62, 50.7], [-54.75, 51.0], [-54.87, 50.7]], [[-49.65, 49.75], [-49.68, 49.82], [-49.75, 49.85], [-49.87, 49.8], [-49.75, 49.5], [-49.65, 49.75]]]]}, "2017-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.75, 49.5], [-60.53, 50.03], [-60.18, 50.18], [-60.03, 50.53], [-59.5, 50.75], [-59.25, 50.65], [-59.0, 50.75], [-58.75, 50.65], [-58.68, 50.68], [-58.65, 50.75], [-58.75, 51.0], [-58.53, 51.53], [-58.0, 51.75], [-57.75, 51.65], [-57.5, 51.75], [-57.25, 51.65], [-57.0, 51.75], [-56.75, 51.65], [-56.5, 51.75], [-56.25, 51.65], [-56.0, 51.75], [-55.75, 51.65], [-55.5, 51.75], [-54.97, 51.53], [-54.75, 51.0], [-54.53, 51.53], [-54.0, 51.75], [-53.75, 51.65], [-53.68, 51.68], [-53.53, 52.03], [-53.0, 52.25], [-52.75, 52.15], [-52.5, 52.25], [-52.25, 52.15], [-52.0, 52.25], [-51.75, 52.15], [-51.5, 52.25], [-51.25, 52.15], [-51.0, 52.25], [-50.75, 52.15], [-50.5, 52.25], [-50.25, 52.15], [-50.0, 52.25], [-49.75, 52.15], [-49.5, 52.25], [-48.97, 52.03], [-48.82, 51.68], [-48.47, 51.53], [-48.32, 51.18], [-47.97, 51.03], [-47.82, 50.68], [-47.75, 50.65], [-47.5, 50.75], [-46.97, 50.53], [-46.75, 50.0], [-46.97, 49.47], [-47.32, 49.32], [-47.47, 48.97], [-48.0, 48.75], [-48.25, 48.85], [-48.5, 48.75], [-48.75, 48.85], [-49.0, 48.75], [-49.53, 48.97], [-49.75, 49.5], [-49.97, 48.97], [-50.32, 48.82], [-50.47, 48.47], [-51.0, 48.25], [-51.25, 48.35], [-51.32, 48.32], [-51.47, 47.97], [-51.82, 47.82], [-51.97, 47.47], [-52.32, 47.32], [-52.47, 46.97], [-53.0, 46.75], [-53.25, 46.85], [-53.5, 46.75], [-54.03, 46.97], [-54.18, 47.32], [-54.25, 47.35], [-54.32, 47.32], [-54.47, 46.97], [-55.0, 46.75], [-55.25, 46.85], [-55.5, 46.75], [-56.03, 46.97], [-56.18, 47.32], [-56.25, 47.35], [-56.32, 47.32], [-56.35, 47.25], [-56.25, 47.0], [-56.47, 46.47], [-57.0, 46.25], [-57.5, 46.46], [-58.0, 46.25], [-58.25, 46.35], [-58.32, 46.32], [-58.47, 45.97], [-59.0, 45.75], [-59.25, 45.85], [-59.5, 45.75], [-60.03, 45.97], [-60.25, 46.5], [-60.15, 46.75], [-60.25, 47.0], [-60.04, 47.5], [-60.25, 48.0], [-60.15, 48.25], [-60.25, 48.5], [-60.15, 48.75], [-60.18, 48.82], [-60.53, 48.97], [-60.75, 49.5]], [[-54.87, 50.7], [-54.75, 50.65], [-54.62, 50.7], [-54.75, 51.0], [-54.87, 50.7]], [[-49.65, 49.75], [-49.68, 49.82], [-49.75, 49.85], [-49.87, 49.8], [-49.75, 49.5], [-49.65, 49.75]]]]}, "2017-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.75, 49.5], [-60.53, 50.03], [-60.18, 50.18], [-60.03, 50.53], [-59.5, 50.75], [-59.25, 50.65], [-59.0, 50.75], [-58.75, 50.65], [-58.68, 50.68], [-58.65, 50.75], [-58.75, 51.0], [-58.53, 51.53], [-58.0, 51.75], [-57.75, 51.65], [-57.5, 51.75], [-57.25, 51.65], [-57.0, 51.75], [-56.75, 51.65], [-56.5, 51.75], [-56.25, 51.65], [-56.0, 51.75], [-55.75, 51.65], [-55.5, 51.75], [-54.97, 51.53], [-54.75, 51.0], [-54.53, 51.53], [-54.0, 51.75], [-53.75, 51.65], [-53.68, 51.68], [-53.53, 52.03], [-53.0, 52.25], [-52.75, 52.15], [-52.5, 52.25], [-52.25, 52.15], [-52.0, 52.25], [-51.75, 52.15], [-51.5, 52.25], [-51.25, 52.15], [-51.0, 52.25], [-50.75, 52.15], [-50.5, 52.25], [-50.25, 52.15], [-50.0, 52.25], [-49.75, 52.15], [-49.5, 52.25], [-48.97, 52.03], [-48.82, 51.68], [-48.47, 51.53], [-48.32, 51.18], [-47.97, 51.03], [-47.82, 50.68], [-47.75, 50.65], [-47.5, 50.75], [-46.97, 50.53], [-46.75, 50.0], [-46.97, 49.47], [-47.32, 49.32], [-47.47, 48.97], [-48.0, 48.75], [-48.25, 48.85], [-48.5, 48.75], [-48.75, 48.85], [-49.0, 48.75], [-49.53, 48.97], [-49.75, 49.5], [-49.97, 48.97], [-50.32, 48.82], [-50.47, 48.47], [-51.0, 48.25], [-51.25, 48.35], [-51.32, 48.32], [-51.47, 47.97], [-51.82, 47.82], [-51.97, 47.47], [-52.32, 47.32], [-52.47, 46.97], [-53.0, 46.75], [-53.25, 46.85], [-53.5, 46.75], [-54.03, 46.97], [-54.18, 47.32], [-54.25, 47.35], [-54.32, 47.32], [-54.47, 46.97], [-55.0, 46.75], [-55.25, 46.85], [-55.5, 46.75], [-56.03, 46.97], [-56.18, 47.32], [-56.25, 47.35], [-56.32, 47.32], [-56.35, 47.25], [-56.25, 47.0], [-56.47, 46.47], [-57.0, 46.25], [-57.5, 46.46], [-58.0, 46.25], [-58.25, 46.35], [-58.32, 46.32], [-58.47, 45.97], [-59.0, 45.75], [-59.25, 45.85], [-59.5, 45.75], [-60.03, 45.97], [-60.25, 46.5], [-60.15, 46.75], [-60.25, 47.0], [-60.04, 47.5], [-60.25, 48.0], [-60.15, 48.25], [-60.25, 48.5], [-60.15, 48.75], [-60.18, 48.82], [-60.53, 48.97], [-60.75, 49.5]], [[-54.87, 50.7], [-54.75, 50.65], [-54.62, 50.7], [-54.75, 51.0], [-54.87, 50.7]], [[-49.65, 49.75], [-49.68, 49.82], [-49.75, 49.85], [-49.87, 49.8], [-49.75, 49.5], [-49.65, 49.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.859709763891544}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.135985743267814}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.908830090674144, 16.520415568749797, 17.10586224240103, 16.980464424792785]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.012019557806468, 20.53143389341534, 21.953012009811516, 21.064404667360407]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.2455635669937997, 3.6473165087025916, 4.3692599807094386, 4.409552621539869]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.443036837757404, 6.319190885764215, 7.859709763891544, 7.155557653575727]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2838505945779113, 1.6508384174479411, 1.9553698583508583, 2.0005356719237444]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.299429627575682, 2.339665377877794, 2.8029293917209968, 2.522675753698752]}}