{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-28 16:19:54.289499", "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": "2026-May-05_to_2026-May-07_296.5_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": 2026050001040}, "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": "May 05 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 07 2026"}, "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": 131378.24685178453}, "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": ["Gulf of St. Lawrence"]}, "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": 296.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 294.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.25}, "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": 50.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.65, 47.75], [-65.75, 48.0], [-65.53, 48.53], [-65.0, 48.75], [-64.75, 48.65], [-64.68, 48.68], [-64.53, 49.03], [-64.18, 49.18], [-64.03, 49.53], [-63.5, 49.75], [-63.25, 49.65], [-63.18, 49.68], [-63.15, 49.75], [-63.25, 50.0], [-63.03, 50.53], [-62.5, 50.75], [-62.25, 50.65], [-62.0, 50.75], [-61.47, 50.53], [-61.32, 50.18], [-61.25, 50.15], [-61.0, 50.25], [-60.75, 50.15], [-60.5, 50.25], [-59.97, 50.03], [-59.75, 49.5], [-59.96, 49.0], [-59.75, 48.5], [-59.87, 48.2], [-59.47, 48.03], [-59.32, 47.68], [-59.25, 47.65], [-59.0, 47.75], [-58.47, 47.53], [-58.25, 47.0], [-58.47, 46.47], [-58.82, 46.32], [-58.97, 45.97], [-59.5, 45.75], [-59.75, 45.85], [-60.0, 45.75], [-60.43, 45.93], [-60.25, 45.5], [-60.47, 44.97], [-61.0, 44.75], [-61.53, 44.97], [-61.68, 45.32], [-61.75, 45.35], [-62.0, 45.25], [-62.25, 45.35], [-62.5, 45.25], [-62.75, 45.35], [-63.0, 45.25], [-63.25, 45.35], [-63.32, 45.32], [-63.47, 44.97], [-64.0, 44.75], [-64.53, 44.97], [-64.75, 45.5], [-64.62, 45.8], [-65.03, 45.97], [-65.18, 46.32], [-65.53, 46.47], [-65.75, 47.0], [-65.65, 47.25], [-65.75, 47.5], [-65.65, 47.75]]]]}, "2026-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.65, 47.75], [-65.75, 48.0], [-65.53, 48.53], [-65.0, 48.75], [-64.75, 48.65], [-64.68, 48.68], [-64.53, 49.03], [-64.18, 49.18], [-64.03, 49.53], [-63.5, 49.75], [-63.25, 49.65], [-63.18, 49.68], [-63.15, 49.75], [-63.25, 50.0], [-63.03, 50.53], [-62.5, 50.75], [-62.25, 50.65], [-62.0, 50.75], [-61.47, 50.53], [-61.32, 50.18], [-61.25, 50.15], [-61.0, 50.25], [-60.75, 50.15], [-60.5, 50.25], [-59.97, 50.03], [-59.75, 49.5], [-59.96, 49.0], [-59.75, 48.5], [-59.87, 48.2], [-59.47, 48.03], [-59.32, 47.68], [-59.25, 47.65], [-59.0, 47.75], [-58.47, 47.53], [-58.25, 47.0], [-58.47, 46.47], [-58.82, 46.32], [-58.97, 45.97], [-59.5, 45.75], [-59.75, 45.85], [-60.0, 45.75], [-60.43, 45.93], [-60.25, 45.5], [-60.47, 44.97], [-61.0, 44.75], [-61.53, 44.97], [-61.68, 45.32], [-61.75, 45.35], [-62.0, 45.25], [-62.25, 45.35], [-62.5, 45.25], [-62.75, 45.35], [-63.0, 45.25], [-63.25, 45.35], [-63.32, 45.32], [-63.47, 44.97], [-64.0, 44.75], [-64.53, 44.97], [-64.75, 45.5], [-64.62, 45.8], [-65.03, 45.97], [-65.18, 46.32], [-65.53, 46.47], [-65.75, 47.0], [-65.65, 47.25], [-65.75, 47.5], [-65.65, 47.75]]]]}, "2026-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.65, 47.75], [-65.75, 48.0], [-65.53, 48.53], [-65.0, 48.75], [-64.75, 48.65], [-64.68, 48.68], [-64.53, 49.03], [-64.18, 49.18], [-64.03, 49.53], [-63.5, 49.75], [-63.25, 49.65], [-63.18, 49.68], [-63.15, 49.75], [-63.25, 50.0], [-63.03, 50.53], [-62.5, 50.75], [-62.25, 50.65], [-62.0, 50.75], [-61.47, 50.53], [-61.32, 50.18], [-61.25, 50.15], [-61.0, 50.25], [-60.75, 50.15], [-60.5, 50.25], [-59.97, 50.03], [-59.75, 49.5], [-59.96, 49.0], [-59.75, 48.5], [-59.87, 48.2], [-59.47, 48.03], [-59.32, 47.68], [-59.25, 47.65], [-59.0, 47.75], [-58.47, 47.53], [-58.25, 47.0], [-58.47, 46.47], [-58.82, 46.32], [-58.97, 45.97], [-59.5, 45.75], [-59.75, 45.85], [-60.0, 45.75], [-60.43, 45.93], [-60.25, 45.5], [-60.47, 44.97], [-61.0, 44.75], [-61.53, 44.97], [-61.68, 45.32], [-61.75, 45.35], [-62.0, 45.25], [-62.25, 45.35], [-62.5, 45.25], [-62.75, 45.35], [-63.0, 45.25], [-63.25, 45.35], [-63.32, 45.32], [-63.47, 44.97], [-64.0, 44.75], [-64.53, 44.97], [-64.75, 45.5], [-64.62, 45.8], [-65.03, 45.97], [-65.18, 46.32], [-65.53, 46.47], [-65.75, 47.0], [-65.65, 47.25], [-65.75, 47.5], [-65.65, 47.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.04138178395948}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.4410631583706106}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.655998908148945, 8.180867303111597, 7.239671991741886]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.368211364746116, 15.43683776855471, 12.386683400472009]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.8971177926295932, 4.260553953779138, 3.165517728703092]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.166525554766963, 8.04138178395948, 4.949139857832961]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7237112221635802, 2.4290275511542667, 1.753785765475639]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.110153939318221, 3.335409704766474, 2.3969889514522]}}