{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:38.917483", "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": "2025-Jul-15_to_2025-Jul-17_231.5_53.5"}, "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": 2025070002256}, "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": "July 15 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 17 2025"}, "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": 52308.27851504057}, "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", "United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 53.5}, "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": 231.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "231.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 228.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 233.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-131.25, 56.15], [-131.0, 56.25], [-130.75, 56.15], [-130.68, 56.18], [-130.53, 56.53], [-130.0, 56.75], [-129.47, 56.53], [-129.32, 56.18], [-129.25, 56.15], [-129.0, 56.25], [-128.75, 56.15], [-128.5, 56.25], [-127.97, 56.03], [-127.75, 55.5], [-127.97, 54.97], [-128.32, 54.82], [-128.35, 54.75], [-128.32, 54.68], [-128.25, 54.65], [-128.0, 54.75], [-127.47, 54.53], [-127.25, 54.0], [-127.35, 53.75], [-127.32, 53.68], [-126.97, 53.53], [-126.82, 53.18], [-126.47, 53.03], [-126.25, 52.5], [-126.47, 51.97], [-127.0, 51.75], [-127.25, 51.85], [-127.5, 51.75], [-127.75, 51.85], [-128.0, 51.75], [-128.25, 51.85], [-128.5, 51.75], [-129.03, 51.97], [-129.25, 52.5], [-129.15, 52.75], [-129.18, 52.82], [-129.53, 52.97], [-129.75, 53.5], [-129.65, 53.75], [-129.68, 53.82], [-129.75, 53.85], [-130.0, 53.75], [-130.53, 53.97], [-130.68, 54.32], [-131.03, 54.47], [-131.18, 54.82], [-131.25, 54.85], [-131.32, 54.82], [-131.47, 54.47], [-132.0, 54.25], [-132.53, 54.47], [-132.75, 55.0], [-132.53, 55.53], [-132.18, 55.68], [-132.03, 56.03], [-131.5, 56.25], [-131.25, 56.15]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-132.03, 56.03], [-131.5, 56.25], [-131.25, 56.15], [-131.0, 56.25], [-130.75, 56.15], [-130.68, 56.18], [-130.53, 56.53], [-130.0, 56.75], [-129.47, 56.53], [-129.32, 56.18], [-129.25, 56.15], [-129.0, 56.25], [-128.75, 56.15], [-128.5, 56.25], [-127.97, 56.03], [-127.75, 55.5], [-127.97, 54.97], [-128.32, 54.82], [-128.35, 54.75], [-128.32, 54.68], [-128.25, 54.65], [-128.0, 54.75], [-127.47, 54.53], [-127.25, 54.0], [-127.35, 53.75], [-127.32, 53.68], [-126.97, 53.53], [-126.82, 53.18], [-126.47, 53.03], [-126.25, 52.5], [-126.47, 51.97], [-127.0, 51.75], [-127.25, 51.85], [-127.5, 51.75], [-127.75, 51.85], [-128.0, 51.75], [-128.25, 51.85], [-128.5, 51.75], [-129.03, 51.97], [-129.25, 52.5], [-129.15, 52.75], [-129.18, 52.82], [-129.53, 52.97], [-129.75, 53.5], [-129.65, 53.75], [-129.68, 53.82], [-129.75, 53.85], [-130.0, 53.75], [-130.53, 53.97], [-130.68, 54.32], [-131.03, 54.47], [-131.18, 54.82], [-131.25, 54.85], [-131.32, 54.82], [-131.47, 54.47], [-132.0, 54.25], [-132.53, 54.47], [-132.75, 55.0], [-132.53, 55.53], [-132.18, 55.68], [-132.03, 56.03]]]]}, "2025-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-132.03, 56.03], [-131.5, 56.25], [-131.25, 56.15], [-131.0, 56.25], [-130.75, 56.15], [-130.68, 56.18], [-130.53, 56.53], [-130.0, 56.75], [-129.47, 56.53], [-129.32, 56.18], [-129.25, 56.15], [-129.0, 56.25], [-128.75, 56.15], [-128.5, 56.25], [-127.97, 56.03], [-127.75, 55.5], [-127.97, 54.97], [-128.32, 54.82], [-128.35, 54.75], [-128.32, 54.68], [-128.25, 54.65], [-128.0, 54.75], [-127.47, 54.53], [-127.25, 54.0], [-127.35, 53.75], [-127.32, 53.68], [-126.97, 53.53], [-126.82, 53.18], [-126.47, 53.03], [-126.25, 52.5], [-126.47, 51.97], [-127.0, 51.75], [-127.25, 51.85], [-127.5, 51.75], [-127.75, 51.85], [-128.0, 51.75], [-128.25, 51.85], [-128.5, 51.75], [-129.03, 51.97], [-129.25, 52.5], [-129.15, 52.75], [-129.18, 52.82], [-129.53, 52.97], [-129.75, 53.5], [-129.65, 53.75], [-129.68, 53.82], [-129.75, 53.85], [-130.0, 53.75], [-130.53, 53.97], [-130.68, 54.32], [-131.03, 54.47], [-131.18, 54.82], [-131.25, 54.85], [-131.32, 54.82], [-131.47, 54.47], [-132.0, 54.25], [-132.53, 54.47], [-132.75, 55.0], [-132.53, 55.53], [-132.18, 55.68], [-132.03, 56.03]]]]}, "2025-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-132.03, 56.03], [-131.5, 56.25], [-131.25, 56.15], [-131.0, 56.25], [-130.75, 56.15], [-130.68, 56.18], [-130.53, 56.53], [-130.0, 56.75], [-129.47, 56.53], [-129.32, 56.18], [-129.25, 56.15], [-129.0, 56.25], [-128.75, 56.15], [-128.5, 56.25], [-127.97, 56.03], [-127.75, 55.5], [-127.97, 54.97], [-128.32, 54.82], [-128.35, 54.75], [-128.32, 54.68], [-128.25, 54.65], [-128.0, 54.75], [-127.47, 54.53], [-127.25, 54.0], [-127.35, 53.75], [-127.32, 53.68], [-126.97, 53.53], [-126.82, 53.18], [-126.47, 53.03], [-126.25, 52.5], [-126.47, 51.97], [-127.0, 51.75], [-127.25, 51.85], [-127.5, 51.75], [-127.75, 51.85], [-128.0, 51.75], [-128.25, 51.85], [-128.5, 51.75], [-129.03, 51.97], [-129.25, 52.5], [-129.15, 52.75], [-129.18, 52.82], [-129.53, 52.97], [-129.75, 53.5], [-129.65, 53.75], [-129.68, 53.82], [-129.75, 53.85], [-130.0, 53.75], [-130.53, 53.97], [-130.68, 54.32], [-131.03, 54.47], [-131.18, 54.82], [-131.25, 54.85], [-131.32, 54.82], [-131.47, 54.47], [-132.0, 54.25], [-132.53, 54.47], [-132.75, 55.0], [-132.53, 55.53], [-132.18, 55.68], [-132.03, 56.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.965714330873595}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.893249520020113}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.51673550660587, 16.329714579965867, 16.718392155088225]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.423499043782556, 18.165124511718773, 19.232153828938806]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.952937466074161, 3.70852460999663, 4.018286483989549]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.2599584941804665, 5.395615326145958, 5.965714330873595]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7784048590254506, 1.709853112916017, 1.8392734488095797]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.532990125675864, 1.9233868095591753, 2.438468213965993]}}