{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:42.175702", "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-19_to_2025-Jul-23_229.0_58.0"}, "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": 2025070002505}, "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 19 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 23 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 97936.82059933718}, "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": 58.0}, "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": 229.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "229.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 227.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 232.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-130.5, 54.25], [-130.75, 54.35], [-131.0, 54.25], [-131.25, 54.35], [-131.5, 54.25], [-131.75, 54.35], [-132.0, 54.25], 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55.0], [-129.97, 54.47], [-130.5, 54.25]], [[-129.65, 55.25], [-129.75, 55.5], [-129.65, 55.75], [-129.68, 55.82], [-129.75, 55.85], [-130.0, 55.75], [-130.25, 55.85], [-130.32, 55.82], [-130.35, 55.75], [-130.32, 55.68], [-129.97, 55.53], [-129.75, 55.0], [-129.65, 55.25]]]]}}, "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": {"2025-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-132.75, 59.5], [-132.53, 60.03], [-132.0, 60.25], [-131.47, 60.03], [-131.32, 59.68], [-131.25, 59.65], [-131.0, 59.75], [-130.47, 59.53], [-130.32, 59.18], [-130.25, 59.15], [-130.0, 59.25], [-129.47, 59.03], [-129.25, 58.5], [-129.47, 57.97], [-129.82, 57.82], [-129.97, 57.47], [-130.5, 57.25], [-130.75, 57.35], [-131.0, 57.25], [-131.25, 57.35], [-131.5, 57.25], [-131.75, 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4.162325119503253}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.377654012044275, 14.448133389912016, 16.083331219903357, 16.612651991570146, 14.732142566499306]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.222217814127646, 16.461541748046898, 19.5118232727051, 19.780241902669275, 17.987908935546898]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.4623658299780073, 2.7843595734715203, 4.569678067069672, 5.071599075123365, 3.3801289326803046]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.0358152880218086, 3.602337367474263, 6.253096230609515, 6.548773865298244, 4.741405344285681]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6874387813072533, 1.537446770574508, 2.3322638692488233, 2.519812713484888, 1.5915577451576346]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8850214215312173, 1.7218018395268933, 3.208617457905638, 3.4695399117445103, 2.1108523908961363]}}