{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:06.377734", "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-Jun-22_to_2023-Jun-25_305.5_48.0"}, "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": 2023060002578}, "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": "June 22 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 25 2023"}, "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": 57608.06275195459}, "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": 48.0}, "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": 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": 301.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 307.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-59.53, 48.03], [-59.18, 48.18], [-59.03, 48.53], [-58.5, 48.75], [-58.25, 48.65], [-58.0, 48.75], [-57.75, 48.65], [-57.68, 48.68], [-57.53, 49.03], [-57.18, 49.18], [-57.15, 49.25], [-57.18, 49.32], [-57.53, 49.47], [-57.75, 50.0], [-57.53, 50.53], [-57.0, 50.75], [-56.47, 50.53], [-56.32, 50.18], [-55.97, 50.03], [-55.82, 49.68], [-55.75, 49.65], [-55.5, 49.75], [-55.25, 49.65], [-55.0, 49.75], [-54.47, 49.53], [-54.32, 49.18], [-54.25, 49.15], [-54.0, 49.25], [-53.47, 49.03], [-53.25, 48.5], [-53.35, 48.25], [-53.32, 48.18], [-53.0, 48.04], [-52.5, 48.25], [-51.97, 48.03], [-51.75, 47.5], [-51.97, 46.97], [-52.32, 46.82], [-52.47, 46.47], [-53.0, 46.25], [-53.25, 46.35], [-53.5, 46.25], [-54.03, 46.47], [-54.25, 47.0], [-54.15, 47.25], [-54.18, 47.32], [-54.25, 47.35], [-54.5, 47.25], [-54.75, 47.35], [-55.0, 47.25], [-55.25, 47.35], [-55.5, 47.25], [-55.75, 47.35], [-56.0, 47.25], [-56.25, 47.35], [-56.5, 47.25], [-56.75, 47.35], [-57.0, 47.25], [-57.25, 47.35], [-57.5, 47.25], [-57.75, 47.35], [-58.0, 47.25], [-58.25, 47.35], [-58.32, 47.32], [-58.47, 46.97], [-59.0, 46.75], [-59.53, 46.97], [-59.75, 47.5], [-59.53, 48.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America", "E.North-America", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.02999999999997, 48.53], [-58.5, 48.75], [-58.25, 48.65], [-58.0, 48.75], [-57.75, 48.65], [-57.68000000000001, 48.68], [-57.52999999999997, 49.03], [-57.18000000000001, 49.18], [-57.14999999999998, 49.25], [-57.18000000000001, 49.32], [-57.52999999999997, 49.47], [-57.75, 50.0], [-57.52999999999997, 50.53], [-57.0, 50.75], [-56.47000000000003, 50.53], [-56.31999999999999, 50.18], [-55.97000000000003, 50.03], [-55.81999999999999, 49.68], [-55.75, 49.65], [-55.5, 49.75], [-55.25, 49.65], [-55.0, 49.75], [-54.47000000000003, 49.53], [-54.31999999999999, 49.18], [-54.25, 49.15], [-54.0, 49.25], [-53.47000000000003, 49.03], [-53.25, 48.5], [-53.35000000000002, 48.25], [-53.31999999999999, 48.18], [-52.97000000000003, 48.03], [-52.81999999999999, 47.68], [-52.47000000000003, 47.53], [-52.25, 47.0], [-52.47000000000003, 46.47], [-53.0, 46.25], [-53.25, 46.35], [-53.5, 46.25], [-54.02999999999997, 46.47], [-54.25, 47.0], [-54.14999999999998, 47.25], [-54.18000000000001, 47.32], [-54.25, 47.35], [-54.5, 47.25], [-54.75, 47.35], [-55.0, 47.25], [-55.25, 47.35], [-55.5, 47.25], [-55.75, 47.35], [-56.0, 47.25], [-56.25, 47.35], [-56.5, 47.25], [-56.75, 47.35], [-57.0, 47.25], [-57.25, 47.35], [-57.5, 47.25], [-57.75, 47.35], [-58.0, 47.25], [-58.25, 47.35], [-58.31999999999999, 47.32], [-58.47000000000003, 46.97], [-59.0, 46.75], [-59.52999999999997, 46.97], [-59.75, 47.5], [-59.52999999999997, 48.03], [-59.18000000000001, 48.18], [-59.02999999999997, 48.53]]]]}, "2023-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.02999999999997, 48.53], [-58.5, 48.75], [-58.25, 48.65], [-58.0, 48.75], [-57.75, 48.65], [-57.68000000000001, 48.68], [-57.52999999999997, 49.03], [-57.18000000000001, 49.18], [-57.14999999999998, 49.25], [-57.18000000000001, 49.32], [-57.52999999999997, 49.47], [-57.75, 50.0], [-57.52999999999997, 50.53], [-57.0, 50.75], [-56.47000000000003, 50.53], [-56.31999999999999, 50.18], [-55.97000000000003, 50.03], [-55.81999999999999, 49.68], [-55.75, 49.65], [-55.5, 49.75], [-55.25, 49.65], [-55.0, 49.75], [-54.47000000000003, 49.53], [-54.31999999999999, 49.18], [-54.25, 49.15], [-54.0, 49.25], [-53.47000000000003, 49.03], [-53.25, 48.5], [-53.35000000000002, 48.25], [-53.31999999999999, 48.18], [-53.0, 48.04], [-52.5, 48.25], [-51.97000000000003, 48.03], [-51.75, 47.5], [-51.97000000000003, 46.97], [-52.31999999999999, 46.82], [-52.47000000000003, 46.47], [-53.0, 46.25], [-53.25, 46.35], [-53.5, 46.25], [-54.02999999999997, 46.47], [-54.25, 47.0], [-54.14999999999998, 47.25], [-54.18000000000001, 47.32], [-54.25, 47.35], [-54.5, 47.25], [-54.75, 47.35], [-55.0, 47.25], [-55.25, 47.35], [-55.5, 47.25], [-55.75, 47.35], [-56.0, 47.25], [-56.25, 47.35], [-56.5, 47.25], [-56.75, 47.35], [-57.0, 47.25], [-57.25, 47.35], [-57.5, 47.25], [-57.75, 47.35], [-58.0, 47.25], [-58.25, 47.35], [-58.31999999999999, 47.32], [-58.47000000000003, 46.97], [-59.0, 46.75], [-59.52999999999997, 46.97], [-59.75, 47.5], [-59.52999999999997, 48.03], [-59.18000000000001, 48.18], [-59.02999999999997, 48.53]]]]}, "2023-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.02999999999997, 48.53], [-58.5, 48.75], [-58.25, 48.65], [-58.0, 48.75], [-57.75, 48.65], [-57.68000000000001, 48.68], [-57.52999999999997, 49.03], [-57.18000000000001, 49.18], [-57.14999999999998, 49.25], [-57.18000000000001, 49.32], [-57.52999999999997, 49.47], [-57.75, 50.0], [-57.52999999999997, 50.53], [-57.0, 50.75], [-56.47000000000003, 50.53], [-56.31999999999999, 50.18], [-55.97000000000003, 50.03], [-55.81999999999999, 49.68], [-55.75, 49.65], [-55.5, 49.75], [-55.25, 49.65], [-55.0, 49.75], [-54.47000000000003, 49.53], [-54.31999999999999, 49.18], [-54.25, 49.15], [-54.0, 49.25], [-53.47000000000003, 49.03], [-53.25, 48.5], [-53.35000000000002, 48.25], [-53.31999999999999, 48.18], [-53.0, 48.04], [-52.5, 48.25], [-51.97000000000003, 48.03], [-51.75, 47.5], [-51.97000000000003, 46.97], [-52.31999999999999, 46.82], [-52.47000000000003, 46.47], [-53.0, 46.25], [-53.25, 46.35], [-53.5, 46.25], [-54.02999999999997, 46.47], [-54.25, 47.0], [-54.14999999999998, 47.25], [-54.18000000000001, 47.32], [-54.25, 47.35], [-54.5, 47.25], [-54.75, 47.35], [-55.0, 47.25], [-55.25, 47.35], [-55.5, 47.25], [-55.75, 47.35], [-56.0, 47.25], [-56.25, 47.35], [-56.5, 47.25], [-56.75, 47.35], [-57.0, 47.25], [-57.25, 47.35], [-57.5, 47.25], [-57.75, 47.35], [-58.0, 47.25], [-58.25, 47.35], [-58.31999999999999, 47.32], [-58.47000000000003, 46.97], [-59.0, 46.75], [-59.52999999999997, 46.97], [-59.75, 47.5], [-59.52999999999997, 48.03], [-59.18000000000001, 48.18], [-59.02999999999997, 48.53]]]]}, "2023-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.0, 46.75], [-59.52999999999997, 46.97], [-59.75, 47.5], [-59.52999999999997, 48.03], [-59.0, 48.25], [-58.47000000000003, 48.03], [-58.25, 47.5], [-58.47000000000003, 46.97], [-59.0, 46.75]]], [[[-52.5, 46.75], [-53.02999999999997, 46.97], [-53.25, 47.5], [-53.02999999999997, 48.03], [-52.5, 48.25], [-51.97000000000003, 48.03], [-51.75, 47.5], [-51.97000000000003, 46.97], [-52.5, 46.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.303147081469888}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.971508528537122}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.605019431855965, 19.588733475519632, 18.467222479650104, 13.434921080686365]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.383090757824846, 23.039584509342944, 22.21400186117461, 14.10704421963311]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.729784471553307, 6.757398489455937, 5.631424712295279, 2.9934972723409885]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.7083716173169705, 9.303147081469888, 8.493037272513334, 3.2917671524140246]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8624094008984915, 2.170281559520078, 1.7147912002113948, 1.4879720451516603]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.730263165603971, 2.710801397555577, 2.1813993084483894, 1.560172023940048]}}