{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:43.780746", "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-Aug-18_to_2024-Aug-20_228.5_61.0"}, "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": 2024080002192}, "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": "August 18 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 20 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": 94650.59139242132}, "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": []}, "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": 61.0}, "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": 228.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "228.5\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": 234.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-132.18, 59.18], [-132.03, 59.53], [-131.5, 59.75], [-131.25, 59.65], [-131.12, 59.7], [-131.25, 60.0], [-131.15, 60.25], [-131.18, 60.32], [-131.25, 60.35], [-131.5, 60.25], [-131.75, 60.35], [-132.0, 60.25], [-132.53, 60.47], [-132.75, 61.0], [-132.53, 61.53], [-132.12, 61.7], [-132.25, 62.0], [-132.03, 62.53], [-131.5, 62.75], [-131.25, 62.65], [-131.0, 62.75], [-130.75, 62.65], [-130.5, 62.75], [-129.97, 62.53], [-129.75, 62.0], [-129.85, 61.75], [-129.82, 61.68], [-129.75, 61.65], [-129.68, 61.68], [-129.53, 62.03], [-129.0, 62.25], [-128.75, 62.15], [-128.5, 62.25], [-128.25, 62.15], [-128.0, 62.25], [-127.75, 62.15], [-127.5, 62.25], [-127.25, 62.15], [-127.0, 62.25], [-126.75, 62.15], [-126.5, 62.25], [-126.25, 62.15], [-126.0, 62.25], [-125.47, 62.03], [-125.25, 61.5], [-125.47, 60.97], [-125.82, 60.82], [-125.85, 60.75], [-125.75, 60.5], [-125.97, 59.97], [-126.37, 59.8], [-126.25, 59.5], [-126.35, 59.25], [-126.25, 59.0], [-126.47, 58.47], [-127.0, 58.25], [-127.25, 58.35], [-127.5, 58.25], [-127.75, 58.35], [-128.0, 58.25], [-128.25, 58.35], [-128.32, 58.32], [-128.47, 57.97], [-128.82, 57.82], [-128.85, 57.75], [-128.75, 57.5], [-128.97, 56.97], [-129.5, 56.75], [-129.75, 56.85], [-130.0, 56.75], [-130.53, 56.97], [-130.68, 57.32], [-130.75, 57.35], [-131.0, 57.25], [-131.25, 57.35], [-131.5, 57.25], [-131.75, 57.35], [-132.0, 57.25], [-132.53, 57.47], [-132.75, 58.0], [-132.65, 58.25], [-132.75, 58.5], [-132.53, 59.03], [-132.18, 59.18]], [[-127.37, 60.2], [-127.25, 60.15], [-127.12, 60.2], [-127.18, 60.32], [-127.3, 60.38], [-127.37, 60.2]]]]}}, "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": {"2024-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-132.75, 58.5], [-132.53, 59.03], [-132.18, 59.18], [-132.03, 59.53], [-131.5, 59.75], [-131.25, 59.65], [-131.12, 59.7], [-131.25, 60.0], [-131.15, 60.25], [-131.18, 60.32], [-131.25, 60.35], [-131.5, 60.25], [-131.75, 60.35], [-132.0, 60.25], [-132.53, 60.47], [-132.75, 61.0], [-132.53, 61.53], [-132.12, 61.7], [-132.25, 62.0], [-132.03, 62.53], [-131.5, 62.75], [-131.25, 62.65], [-131.0, 62.75], [-130.75, 62.65], [-130.5, 62.75], [-129.97, 62.53], [-129.75, 62.0], [-129.85, 61.75], [-129.82, 61.68], [-129.75, 61.65], [-129.68, 61.68], [-129.53, 62.03], [-129.0, 62.25], [-128.75, 62.15], [-128.5, 62.25], [-128.25, 62.15], [-128.0, 62.25], [-127.75, 62.15], [-127.5, 62.25], [-127.25, 62.15], [-127.0, 62.25], [-126.75, 62.15], [-126.5, 62.25], [-126.25, 62.15], [-126.0, 62.25], [-125.47, 62.03], [-125.25, 61.5], [-125.47, 60.97], [-125.82, 60.82], [-125.85, 60.75], [-125.75, 60.5], [-125.97, 59.97], [-126.37, 59.8], [-126.25, 59.5], [-126.35, 59.25], [-126.25, 59.0], [-126.47, 58.47], [-127.0, 58.25], [-127.25, 58.35], [-127.5, 58.25], [-127.75, 58.35], [-128.0, 58.25], [-128.25, 58.35], [-128.32, 58.32], [-128.47, 57.97], [-128.82, 57.82], [-128.85, 57.75], [-128.75, 57.5], [-128.97, 56.97], [-129.5, 56.75], [-129.75, 56.85], [-130.0, 56.75], [-130.53, 56.97], [-130.68, 57.32], [-130.75, 57.35], [-131.0, 57.25], [-131.25, 57.35], [-131.5, 57.25], [-131.75, 57.35], [-132.0, 57.25], [-132.53, 57.47], [-132.75, 58.0], [-132.65, 58.25], [-132.75, 58.5]], [[-127.18, 60.32], [-127.30000000000001, 60.38], [-127.37, 60.2], [-127.25, 60.15], [-127.12, 60.2], [-127.18, 60.32]]]]}, "2024-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-132.75, 58.5], [-132.53, 59.03], [-132.18, 59.18], [-132.03, 59.53], [-131.5, 59.75], [-131.25, 59.65], [-131.12, 59.7], [-131.25, 60.0], [-131.15, 60.25], [-131.18, 60.32], [-131.25, 60.35], [-131.5, 60.25], [-131.75, 60.35], [-132.0, 60.25], [-132.53, 60.47], [-132.75, 61.0], [-132.53, 61.53], [-132.12, 61.7], [-132.25, 62.0], [-132.03, 62.53], [-131.5, 62.75], [-131.25, 62.65], [-131.0, 62.75], [-130.75, 62.65], [-130.5, 62.75], [-129.97, 62.53], [-129.75, 62.0], [-129.85, 61.75], [-129.82, 61.68], [-129.75, 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60.38], [-127.37, 60.2], [-127.25, 60.15], [-127.12, 60.2], [-127.18, 60.32]]]]}, "2024-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-132.75, 58.5], [-132.53, 59.03], [-132.18, 59.18], [-132.03, 59.53], [-131.5, 59.75], [-131.25, 59.65], [-131.12, 59.7], [-131.25, 60.0], [-131.15, 60.25], [-131.18, 60.32], [-131.25, 60.35], [-131.5, 60.25], [-131.75, 60.35], [-132.0, 60.25], [-132.53, 60.47], [-132.75, 61.0], [-132.53, 61.53], [-132.12, 61.7], [-132.25, 62.0], [-132.03, 62.53], [-131.5, 62.75], [-131.25, 62.65], [-131.0, 62.75], [-130.75, 62.65], [-130.5, 62.75], [-129.97, 62.53], [-129.75, 62.0], [-129.85, 61.75], [-129.82, 61.68], [-129.75, 61.65], [-129.68, 61.68], [-129.53, 62.03], [-129.0, 62.25], [-128.75, 62.15], [-128.5, 62.25], [-128.25, 62.15], [-128.0, 62.25], [-127.75, 62.15], [-127.5, 62.25], [-127.25, 62.15], [-127.0, 62.25], [-126.75, 62.15], [-126.5, 62.25], [-126.25, 62.15], [-126.0, 62.25], [-125.47, 62.03], [-125.25, 61.5], [-125.47, 60.97], 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duration", "value": 4.900272788777885}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.41956823279537, 15.90886110016254, 13.636700440178856]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.230195445819504, 19.474128697747403, 18.851809371913646]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.278748609363639, 6.1464499106887285, 4.275619846281277]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.337582035028504, 8.012306834550941, 6.622060309268704]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5732725099754872, 2.4369378430599715, 1.7823303484628417]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0895625653790337, 3.406554536398695, 2.513539582925475]}}