{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:34.257557", "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": "2018-Apr-24_to_2018-Apr-27_292.0_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": 2018040002560}, "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": "April 24 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 27 2018"}, "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": 57718.219559476354}, "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.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": []}, "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": 292.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "292.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 288.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 292.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 51.53], [-71.0, 51.75], [-70.75, 51.65], [-70.5, 51.75], [-70.25, 51.65], [-70.0, 51.75], [-69.75, 51.65], [-69.5, 51.75], [-69.0, 51.54], [-68.5, 51.75], [-67.97, 51.53], [-67.75, 51.0], [-67.85, 50.75], [-67.82, 50.68], [-67.47, 50.53], [-67.25, 50.0], [-67.35, 49.75], [-67.25, 49.5], [-67.47, 48.97], [-68.0, 48.75], [-68.25, 48.85], [-68.5, 48.75], [-68.75, 48.85], [-68.82, 48.82], [-68.97, 48.47], [-69.32, 48.32], [-69.47, 47.97], [-70.0, 47.75], [-70.25, 47.85], [-70.5, 47.75], [-70.75, 47.85], [-71.0, 47.75], [-71.53, 47.97], [-71.75, 48.5], [-71.53, 49.03], [-71.18, 49.18], [-71.15, 49.25], [-71.25, 49.5], [-71.15, 49.75], [-71.18, 49.82], [-71.53, 49.97], [-71.75, 50.5], [-71.65, 50.75], [-71.75, 51.0], [-71.53, 51.53]]]]}, "2018-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 51.53], [-71.0, 51.75], [-70.75, 51.65], [-70.5, 51.75], [-70.25, 51.65], [-70.0, 51.75], [-69.75, 51.65], [-69.5, 51.75], [-69.0, 51.54], [-68.5, 51.75], [-67.97, 51.53], [-67.75, 51.0], [-67.85, 50.75], [-67.82, 50.68], [-67.47, 50.53], [-67.25, 50.0], [-67.35, 49.75], [-67.25, 49.5], [-67.47, 48.97], [-68.0, 48.75], [-68.25, 48.85], [-68.5, 48.75], [-68.75, 48.85], [-68.82, 48.82], [-68.97, 48.47], [-69.32, 48.32], [-69.47, 47.97], [-70.0, 47.75], [-70.25, 47.85], [-70.5, 47.75], [-70.75, 47.85], [-71.0, 47.75], [-71.53, 47.97], [-71.75, 48.5], [-71.53, 49.03], [-71.18, 49.18], [-71.15, 49.25], [-71.25, 49.5], [-71.15, 49.75], [-71.18, 49.82], [-71.53, 49.97], [-71.75, 50.5], [-71.65, 50.75], [-71.75, 51.0], [-71.53, 51.53]]]]}, "2018-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 51.53], [-71.0, 51.75], [-70.75, 51.65], [-70.5, 51.75], [-70.25, 51.65], [-70.0, 51.75], [-69.75, 51.65], [-69.5, 51.75], [-69.0, 51.54], [-68.5, 51.75], [-67.97, 51.53], [-67.75, 51.0], [-67.85, 50.75], [-67.82, 50.68], [-67.47, 50.53], [-67.25, 50.0], [-67.35, 49.75], [-67.25, 49.5], [-67.47, 48.97], [-68.0, 48.75], [-68.25, 48.85], [-68.5, 48.75], [-68.75, 48.85], [-68.82, 48.82], [-68.97, 48.47], [-69.32, 48.32], [-69.47, 47.97], [-70.0, 47.75], [-70.25, 47.85], [-70.5, 47.75], [-70.75, 47.85], [-71.0, 47.75], [-71.53, 47.97], [-71.75, 48.5], [-71.53, 49.03], [-71.18, 49.18], [-71.15, 49.25], [-71.25, 49.5], [-71.15, 49.75], [-71.18, 49.82], [-71.53, 49.97], [-71.75, 50.5], [-71.65, 50.75], [-71.75, 51.0], [-71.53, 51.53]]]]}, "2018-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 51.53], [-71.0, 51.75], [-70.75, 51.65], [-70.5, 51.75], [-70.25, 51.65], [-70.0, 51.75], [-69.75, 51.65], [-69.5, 51.75], [-69.0, 51.54], [-68.5, 51.75], [-67.97, 51.53], [-67.75, 51.0], [-67.85, 50.75], [-67.82, 50.68], [-67.47, 50.53], [-67.25, 50.0], [-67.35, 49.75], [-67.25, 49.5], [-67.47, 48.97], [-68.0, 48.75], [-68.25, 48.85], [-68.5, 48.75], [-68.75, 48.85], [-68.82, 48.82], [-68.97, 48.47], [-69.32, 48.32], [-69.47, 47.97], [-70.0, 47.75], [-70.25, 47.85], [-70.5, 47.75], [-70.75, 47.85], [-71.0, 47.75], [-71.53, 47.97], [-71.75, 48.5], [-71.53, 49.03], [-71.18, 49.18], [-71.15, 49.25], [-71.25, 49.5], [-71.15, 49.75], [-71.18, 49.82], [-71.53, 49.97], [-71.75, 50.5], [-71.65, 50.75], [-71.75, 51.0], [-71.53, 51.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.30104696989082}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.200606946905915}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.2756151486665885, 6.45588403968685, 4.937676605731497, 6.6144841240987375]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.698801881887562, 10.068993655267377, 7.988170975032119, 8.526488559125596]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.330528903065809, 5.403891276331059, 3.7662301512197742, 5.301777457007024]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.29268603843542, 7.30104696989082, 4.316734654779168, 6.8101150169424045]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.024101110270928, 1.7564904746278716, 1.1985906372269268, 1.6636422008353298]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2510420798849116, 2.408347808208092, 1.460273277849117, 1.8811575851323112]}}