{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:01.930734", "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": "2022-Mar-17_to_2022-Mar-20_229.0_64.5"}, "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": 2022030002152}, "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": "March 17 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 20 2022"}, "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": 60391.80002525191}, "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": 64.5}, "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": 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": 225.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 231.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 62.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 64.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-134.25, 65.15], [-134.0, 65.25], [-133.75, 65.15], [-133.5, 65.25], [-133.25, 65.15], [-133.0, 65.25], [-132.75, 65.15], [-132.5, 65.25], [-132.25, 65.15], [-132.0, 65.25], [-131.75, 65.15], [-131.5, 65.25], [-131.25, 65.15], [-131.0, 65.25], [-130.47, 65.03], [-130.32, 64.68], [-130.25, 64.65], [-130.0, 64.75], [-129.75, 64.65], [-129.68, 64.68], [-129.53, 65.03], [-129.0, 65.25], [-128.47, 65.03], [-128.32, 64.68], [-127.97, 64.53], [-127.75, 64.0], [-127.97, 63.47], [-128.32, 63.32], [-128.47, 62.97], [-128.82, 62.82], [-128.97, 62.47], [-129.37, 62.3], [-129.25, 62.0], [-129.47, 61.47], [-130.0, 61.25], [-130.25, 61.35], [-130.5, 61.25], [-130.75, 61.35], [-131.0, 61.25], [-131.53, 61.47], [-131.75, 62.0], [-131.65, 62.25], [-131.7, 62.38], [-132.0, 62.25], [-132.25, 62.35], [-132.5, 62.25], [-133.03, 62.47], [-133.18, 62.82], [-133.25, 62.85], [-133.5, 62.75], [-133.75, 62.85], [-134.0, 62.75], [-134.53, 62.97], [-134.68, 63.32], [-135.03, 63.47], [-135.25, 64.0], [-135.15, 64.25], [-135.25, 64.5], [-135.03, 65.03], [-134.5, 65.25], [-134.25, 65.15]]]]}}, "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": {"2022-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-135.25, 64.5], [-135.03, 65.03], [-134.5, 65.25], [-134.25, 65.15], [-134.0, 65.25], [-133.75, 65.15], [-133.5, 65.25], [-133.25, 65.15], [-133.0, 65.25], [-132.75, 65.15], [-132.5, 65.25], [-132.25, 65.15], [-132.0, 65.25], [-131.75, 65.15], [-131.5, 65.25], [-131.25, 65.15], [-131.0, 65.25], [-130.47, 65.03], [-130.32, 64.68], [-130.25, 64.65], [-130.0, 64.75], [-129.75, 64.65], [-129.68, 64.68], [-129.53, 65.03], [-129.0, 65.25], [-128.47, 65.03], [-128.32, 64.68], [-127.97, 64.53], [-127.75, 64.0], [-127.97, 63.47], [-128.32, 63.32], [-128.47, 62.97], [-128.82, 62.82], [-128.97, 62.47], [-129.37, 62.3], [-129.25, 62.0], [-129.47, 61.47], [-130.0, 61.25], [-130.25, 61.35], [-130.5, 61.25], [-130.75, 61.35], [-131.0, 61.25], [-131.53, 61.47], [-131.75, 62.0], [-131.65, 62.25], [-131.7, 62.38], [-132.0, 62.25], [-132.25, 62.35], [-132.5, 62.25], [-133.03, 62.47], [-133.18, 62.82], [-133.25, 62.85], [-133.5, 62.75], [-133.75, 62.85], [-134.0, 62.75], [-134.53, 62.97], [-134.68, 63.32], [-135.03, 63.47], [-135.25, 64.0], [-135.15, 64.25], [-135.25, 64.5]]]]}, "2022-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-135.25, 64.5], [-135.03, 65.03], [-134.5, 65.25], [-134.25, 65.15], [-134.0, 65.25], [-133.75, 65.15], [-133.5, 65.25], [-133.25, 65.15], [-133.0, 65.25], [-132.75, 65.15], [-132.5, 65.25], [-132.25, 65.15], [-132.0, 65.25], [-131.75, 65.15], [-131.5, 65.25], [-131.25, 65.15], [-131.0, 65.25], [-130.47, 65.03], [-130.32, 64.68], [-130.25, 64.65], [-130.0, 64.75], [-129.75, 64.65], [-129.68, 64.68], [-129.53, 65.03], [-129.0, 65.25], [-128.47, 65.03], [-128.32, 64.68], [-127.97, 64.53], [-127.75, 64.0], [-127.97, 63.47], [-128.32, 63.32], 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"Maximum t2m anomaly recorded over entire duration", "value": 11.106396877513589}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.51791055339067}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-6.950968672224747, -6.992356795516002, -7.215143407115022, -10.99632105265573]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-1.545919608603242, -2.7027157307565517, -1.86970119288776, -10.99632105265573]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.90336972537151, 9.588130604862133, 9.10656537823897, 7.567212428163941]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [11.068314092936248, 11.106396877513589, 10.974762327655242, 7.567212428163941]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.420810306731074, 1.3938352719964229, 1.3306638910610262, 1.1659478804395396]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5445363007012094, 1.5529872559624411, 1.5830054197229735, 1.1659478804395396]}}