{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:35.223212", "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": "2023-May-24_to_2023-May-30_234.5_51.5"}, "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": 2023050002523}, "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 24 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 30 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 57871.41470115632}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 51.5}, "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": 234.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "234.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 233.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 238.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-121.97, 51.53], [-121.82, 51.18], [-121.47, 51.03], [-121.25, 50.5], [-121.47, 49.97], [-122.0, 49.75], [-122.25, 49.85], [-122.5, 49.75], [-122.75, 49.85], [-123.0, 49.75], [-123.25, 49.85], [-123.5, 49.75], [-123.75, 49.85], [-124.0, 49.75], [-124.25, 49.85], [-124.5, 49.75], [-125.03, 49.97], [-125.18, 50.32], [-125.25, 50.35], [-125.5, 50.25], [-126.03, 50.47], [-126.18, 50.82], [-126.25, 50.85], [-126.5, 50.75], [-127.03, 50.97], [-127.25, 51.5], [-127.15, 51.75], [-127.25, 52.0], [-127.03, 52.53], [-126.68, 52.68], [-126.53, 53.03], [-126.0, 53.25], [-125.75, 53.15], [-125.5, 53.25], [-124.97, 53.03], [-124.82, 52.68], [-124.75, 52.65], [-124.68, 52.68], [-124.53, 53.03], [-124.0, 53.25], [-123.47, 53.03], [-123.25, 52.5], [-123.35, 52.25], [-123.32, 52.18], [-123.25, 52.15], [-123.0, 52.25], [-122.47, 52.03], [-122.32, 51.68], [-121.97, 51.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-126.0, 50.75], [-126.53, 50.97], [-126.75, 51.5], [-126.53, 52.03], [-126.0, 52.25], [-125.75, 52.15], [-125.5, 52.25], [-124.97, 52.03], [-124.75, 51.5], [-124.97, 50.97], [-125.5, 50.75], [-125.75, 50.85], [-126.0, 50.75]]]]}, "2023-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.25, 52.0], [-127.03, 52.53], [-126.68, 52.68], [-126.53, 53.03], [-126.0, 53.25], [-125.75, 53.15], [-125.5, 53.25], [-124.97, 53.03], [-124.82, 52.68], [-124.75, 52.65], [-124.5, 52.75], [-124.25, 52.65], [-124.0, 52.75], [-123.47, 52.53], [-123.25, 52.0], [-123.35, 51.75], [-123.32, 51.68], [-123.25, 51.65], [-123.0, 51.75], [-122.47, 51.53], [-122.25, 51.0], [-122.47, 50.47], [-122.82, 50.32], [-122.97, 49.97], [-123.5, 49.75], [-123.75, 49.85], [-124.0, 49.75], [-124.25, 49.85], [-124.5, 49.75], [-125.03, 49.97], [-125.18, 50.32], [-125.25, 50.35], [-125.5, 50.25], [-126.03, 50.47], [-126.18, 50.82], [-126.25, 50.85], [-126.5, 50.75], [-127.03, 50.97], [-127.25, 51.5], [-127.15, 51.75], [-127.25, 52.0]]]]}, "2023-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.25, 52.0], [-127.03, 52.53], [-126.68, 52.68], [-126.53, 53.03], [-126.0, 53.25], [-125.75, 53.15], [-125.5, 53.25], [-124.97, 53.03], [-124.82, 52.68], [-124.75, 52.65], [-124.68, 52.68], [-124.53, 53.03], [-124.0, 53.25], [-123.47, 53.03], [-123.25, 52.5], [-123.35, 52.25], [-123.32, 52.18], [-123.25, 52.15], [-123.0, 52.25], [-122.47, 52.03], [-122.32, 51.68], [-121.97, 51.53], [-121.82, 51.18], [-121.47, 51.03], [-121.25, 50.5], [-121.47, 49.97], [-122.0, 49.75], [-122.25, 49.85], [-122.5, 49.75], [-122.75, 49.85], [-123.0, 49.75], [-123.25, 49.85], [-123.5, 49.75], [-123.75, 49.85], [-124.0, 49.75], [-124.25, 49.85], [-124.5, 49.75], [-125.03, 49.97], [-125.18, 50.32], [-125.25, 50.35], [-125.5, 50.25], [-126.03, 50.47], [-126.18, 50.82], [-126.25, 50.85], [-126.5, 50.75], [-127.03, 50.97], [-127.25, 51.5], [-127.15, 51.75], [-127.25, 52.0]]]]}, "2023-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-127.25, 52.0], [-127.03, 52.53], [-126.68, 52.68], [-126.53, 53.03], [-126.0, 53.25], [-125.75, 53.15], [-125.5, 53.25], [-124.97, 53.03], [-124.82, 52.68], [-124.75, 52.65], [-124.68, 52.68], [-124.53, 53.03], [-124.0, 53.25], [-123.47, 53.03], [-123.25, 52.5], [-123.35, 52.25], [-123.32, 52.18], [-123.25, 52.15], [-123.0, 52.25], [-122.47, 52.03], [-122.32, 51.68], [-121.97, 51.53], [-121.82, 51.18], [-121.47, 51.03], [-121.25, 50.5], [-121.47, 49.97], [-122.0, 49.75], [-122.25, 49.85], [-122.5, 49.75], [-122.75, 49.85], [-123.0, 49.75], [-123.25, 49.85], [-123.5, 49.75], [-123.75, 49.85], [-124.0, 49.75], [-124.25, 49.85], [-124.5, 49.75], [-125.03, 49.97], [-125.18, 50.32], [-125.25, 50.35], [-125.5, 50.25], [-126.03, 50.47], [-126.18, 50.82], [-126.25, 50.85], [-126.5, 50.75], [-127.03, 50.97], [-127.25, 51.5], 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51.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.188073372861425}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.5186042738457255}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.857087603788727, 9.679395223114625, 11.702452267567196, 11.623604296379085, 10.689512216672881, 9.287898549739111, 6.479739613469235]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.4324093099985475, 13.566442054891866, 15.36373130285267, 15.385325569633721, 15.002697229407943, 11.515538389042945, 6.479739613469235]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.5544523011642752, 4.836284975167896, 6.35755746912518, 6.178981682887011, 5.284336893039184, 4.622645998169105, 3.27449309800204]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.9673176398382566, 6.184388537374787, 8.188073372861425, 7.524937746533681, 6.141996845105041, 6.286745938936576, 3.27449309800204]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6097380391550242, 2.0726554631027803, 2.60053570666627, 2.4900862040101037, 2.1745378234307733, 1.901465570692997, 1.575614738037598]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6870568355399915, 2.9212302600130635, 3.6578722496052425, 3.3640415362258826, 2.9266096231400893, 2.6228263482591228, 1.575614738037598]}}