{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:47.130534", "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-Apr-14_to_2025-Apr-19_236.0_42.0"}, "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": 2025040001858}, "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 14 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 19 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 81167.31128137236}, "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": ["United States"]}, "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": 42.0}, "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": 236.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "236.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 236.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 238.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.5}, "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": [[[[-124.75, 42.0], [-124.65, 42.25], [-124.75, 42.5], [-124.53, 43.03], [-124.0, 43.25], [-123.75, 43.15], [-123.68, 43.18], 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39.82], [-123.75, 39.85], [-124.0, 39.75], [-124.53, 39.97], [-124.75, 40.5], [-124.54, 41.0], [-124.75, 41.5], [-124.65, 41.75], [-124.75, 42.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-124.75, 42.0], [-124.65, 42.25], [-124.75, 42.5], [-124.53, 43.03], [-124.0, 43.25], [-123.75, 43.15], [-123.68, 43.18], [-123.65, 43.25], [-123.75, 43.5], [-123.65, 43.75], [-123.75, 44.0], [-123.53, 44.53], [-123.18, 44.68], [-123.15, 44.75], [-123.25, 45.0], [-123.03999999999999, 45.5], [-123.25, 46.0], [-123.03, 46.53], [-122.68, 46.68], [-122.53, 47.03], [-122.18, 47.18], [-122.15, 47.25], [-122.25, 47.5], [-122.03, 48.03], [-121.5, 48.25], [-120.97, 48.03], [-120.75, 47.5], [-120.85, 47.25], [-120.75, 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"evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.312373097737634, 16.71106363932296, 15.829001363118493, 13.194994862874353, 13.685539499918661, 14.119365946451865]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.957210724310601, 6.449515768460255, 5.288916289244544, 5.069251015640816, 4.4779619842203715, 4.609496342083787]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.540521242693103, 8.700559551289473, 7.192919172482789, 5.659737019447846, 4.4779619842203715, 4.609496342083787]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6452209689384896, 2.0733391649614124, 1.6610021186259034, 1.4557566118647431, 1.5843736323067015, 1.6202666246572204]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.1936182888665825, 2.531733492467201, 2.04870600686081, 1.5493655377695317, 1.5843736323067015, 1.6202666246572204]}}