{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:03.835672", "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": "2024-May-20_to_2024-May-22_314.0_46.5"}, "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": 2024050001867}, "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 20 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 22 2024"}, "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": 59749.64953006651}, "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": ["Atlantic Ocean", "Flemish Cap"]}, "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": 46.5}, "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": 314.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "314.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 311.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 316.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-47.75, 47.65], [-47.5, 47.75], [-46.97, 47.53], [-46.82, 47.18], [-46.75, 47.15], [-46.5, 47.25], [-46.25, 47.15], [-46.18, 47.18], [-46.03, 47.53], [-45.5, 47.75], [-45.25, 47.65], [-45.18, 47.68], [-45.03, 48.03], [-44.5, 48.25], [-43.97, 48.03], [-43.82, 47.68], [-43.47, 47.53], [-43.32, 47.18], [-42.97, 47.03], [-42.75, 46.5], [-42.97, 45.97], [-43.32, 45.82], [-43.47, 45.47], [-43.82, 45.32], [-43.97, 44.97], [-44.32, 44.82], [-44.47, 44.47], [-45.0, 44.25], [-45.25, 44.35], [-45.5, 44.25], [-46.03, 44.47], [-46.25, 45.0], [-46.15, 45.25], [-46.18, 45.32], [-46.53, 45.47], [-46.68, 45.82], [-46.75, 45.85], [-47.0, 45.75], [-47.25, 45.85], [-47.5, 45.75], [-47.75, 45.85], [-48.0, 45.75], [-48.25, 45.85], [-48.5, 45.75], [-49.03, 45.97], [-49.25, 46.5], [-49.03, 47.03], [-48.68, 47.18], [-48.53, 47.53], [-48.0, 47.75], [-47.75, 47.65]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.52999999999997, 47.53], [-48.0, 47.75], [-47.75, 47.65], [-47.5, 47.75], [-46.97000000000003, 47.53], [-46.81999999999999, 47.18], [-46.75, 47.15], [-46.5, 47.25], [-46.25, 47.15], [-46.18000000000001, 47.18], [-46.02999999999997, 47.53], [-45.5, 47.75], [-45.25, 47.65], [-45.18000000000001, 47.68], [-45.02999999999997, 48.03], [-44.5, 48.25], [-43.97000000000003, 48.03], [-43.81999999999999, 47.68], [-43.47000000000003, 47.53], [-43.31999999999999, 47.18], [-42.97000000000003, 47.03], [-42.75, 46.5], [-42.97000000000003, 45.97], [-43.31999999999999, 45.82], [-43.47000000000003, 45.47], [-43.81999999999999, 45.32], [-43.97000000000003, 44.97], [-44.31999999999999, 44.82], [-44.47000000000003, 44.47], [-45.0, 44.25], [-45.25, 44.35], [-45.5, 44.25], [-46.02999999999997, 44.47], [-46.25, 45.0], [-46.14999999999998, 45.25], [-46.18000000000001, 45.32], [-46.52999999999997, 45.47], [-46.68000000000001, 45.82], [-46.75, 45.85], [-47.0, 45.75], [-47.25, 45.85], [-47.5, 45.75], [-47.75, 45.85], [-48.0, 45.75], [-48.25, 45.85], [-48.5, 45.75], [-49.02999999999997, 45.97], [-49.25, 46.5], [-49.02999999999997, 47.03], [-48.68000000000001, 47.18], [-48.52999999999997, 47.53]]]]}, "2024-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.52999999999997, 47.53], [-48.0, 47.75], [-47.75, 47.65], [-47.5, 47.75], [-46.97000000000003, 47.53], [-46.81999999999999, 47.18], [-46.75, 47.15], [-46.5, 47.25], [-46.25, 47.15], [-46.18000000000001, 47.18], [-46.02999999999997, 47.53], [-45.5, 47.75], [-45.25, 47.65], [-45.18000000000001, 47.68], [-45.02999999999997, 48.03], [-44.5, 48.25], [-43.97000000000003, 48.03], [-43.81999999999999, 47.68], [-43.47000000000003, 47.53], [-43.31999999999999, 47.18], [-42.97000000000003, 47.03], [-42.75, 46.5], [-42.97000000000003, 45.97], [-43.31999999999999, 45.82], [-43.47000000000003, 45.47], [-43.81999999999999, 45.32], [-43.97000000000003, 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amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.6979668485790143}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.29748796159106, 11.33801308566808, 9.936197033768735]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.113857564221519, 15.023413072252254, 13.96059971727999]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.464015673529898, 4.5040613620619485, 3.125823510145196]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.869712032898519, 5.713960587067845, 4.357927062741624]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7161117892402942, 2.248138075118563, 1.5480150635864427]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.431916861331774, 3.0876023081617125, 1.933493444975671]}}