{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:37:20.230185", "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": "2023-Dec-12_to_2023-Dec-15_232.5_59.5"}, "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": 2023120001324}, "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": "December 12 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 15 2023"}, "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": 56594.92854486513}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": 59.5}, "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": 232.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "232.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 230.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 236.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 58.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-130.25, 60.0], [-130.03, 60.53], [-129.5, 60.75], [-128.97, 60.53], [-128.82, 60.18], [-128.75, 60.15], [-128.62, 60.2], [-128.75, 60.5], [-128.53, 61.03], [-128.0, 61.25], [-127.75, 61.15], [-127.5, 61.25], [-126.97, 61.03], [-126.75, 60.5], [-126.87, 60.2], [-126.47, 60.03], [-126.25, 59.5], [-126.47, 58.97], [-127.0, 58.75], [-127.25, 58.85], [-127.5, 58.75], [-128.0, 58.96], [-128.5, 58.75], [-128.75, 58.85], [-129.0, 58.75], [-129.53, 58.97], [-129.68, 59.32], [-130.03, 59.47], [-130.25, 60.0]]]]}, "2023-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-130.25, 60.0], [-130.03, 60.53], [-129.5, 60.75], [-129.25, 60.65], [-129.0, 60.75], [-128.75, 60.65], [-128.68, 60.68], [-128.53, 61.03], [-128.0, 61.25], [-127.75, 61.15], [-127.5, 61.25], [-127.25, 61.15], [-127.18, 61.18], [-127.03, 61.53], [-126.5, 61.75], [-126.25, 61.65], [-126.18, 61.68], [-126.03, 62.03], [-125.68, 62.18], [-125.53, 62.53], [-125.0, 62.75], [-124.75, 62.65], [-124.5, 62.75], [-123.97, 62.53], [-123.75, 62.0], [-123.85, 61.75], [-123.75, 61.5], [-123.85, 61.25], [-123.82, 61.18], [-123.47, 61.03], [-123.25, 60.5], [-123.47, 59.97], [-124.0, 59.75], [-124.25, 59.85], [-124.5, 59.75], [-124.75, 59.85], [-124.82, 59.82], [-124.97, 59.47], [-125.32, 59.32], [-125.47, 58.97], [-126.0, 58.75], [-126.25, 58.85], [-126.5, 58.75], [-126.75, 58.85], [-126.82, 58.82], [-126.97, 58.47], [-127.5, 58.25], [-128.03, 58.47], [-128.18, 58.82], [-128.25, 58.85], [-128.32, 58.82], [-128.47, 58.47], [-129.0, 58.25], [-129.53, 58.47], [-129.75, 59.0], [-129.65, 59.25], [-129.68, 59.32], [-130.03, 59.47], [-130.25, 60.0]]]]}, "2023-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-130.25, 60.0], [-130.03, 60.53], [-129.5, 60.75], [-129.25, 60.65], [-129.0, 60.75], [-128.75, 60.65], [-128.68, 60.68], [-128.53, 61.03], [-128.0, 61.25], [-127.75, 61.15], [-127.5, 61.25], [-127.25, 61.15], [-127.18, 61.18], [-127.03, 61.53], [-126.5, 61.75], [-126.25, 61.65], [-126.18, 61.68], [-126.03, 62.03], [-125.68, 62.18], [-125.53, 62.53], [-125.0, 62.75], [-124.75, 62.65], [-124.5, 62.75], [-123.97, 62.53], [-123.75, 62.0], [-123.85, 61.75], [-123.75, 61.5], [-123.85, 61.25], [-123.82, 61.18], [-123.47, 61.03], [-123.25, 60.5], [-123.47, 59.97], [-124.0, 59.75], [-124.25, 59.85], [-124.5, 59.75], [-124.75, 59.85], [-124.82, 59.82], [-124.97, 59.47], [-125.32, 59.32], [-125.47, 58.97], [-126.0, 58.75], [-126.25, 58.85], [-126.5, 58.75], [-126.75, 58.85], [-126.82, 58.82], [-126.97, 58.47], [-127.5, 58.25], [-128.03, 58.47], [-128.18, 58.82], [-128.25, 58.85], [-128.32, 58.82], [-128.47, 58.47], [-129.0, 58.25], [-129.53, 58.47], [-129.75, 59.0], [-129.65, 59.25], [-129.68, 59.32], [-130.03, 59.47], [-130.25, 60.0]]]]}, "2023-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-130.25, 60.0], [-130.03, 60.53], [-129.5, 60.75], [-129.25, 60.65], [-129.0, 60.75], [-128.75, 60.65], [-128.68, 60.68], [-128.53, 61.03], [-128.0, 61.25], [-127.75, 61.15], [-127.5, 61.25], [-127.25, 61.15], [-127.18, 61.18], [-127.03, 61.53], [-126.5, 61.75], [-126.25, 61.65], [-126.18, 61.68], [-126.03, 62.03], [-125.68, 62.18], [-125.53, 62.53], [-125.0, 62.75], [-124.75, 62.65], [-124.5, 62.75], [-123.97, 62.53], [-123.75, 62.0], [-123.85, 61.75], [-123.75, 61.5], [-123.85, 61.25], [-123.82, 61.18], [-123.47, 61.03], [-123.25, 60.5], [-123.47, 59.97], [-124.0, 59.75], [-124.25, 59.85], [-124.5, 59.75], [-124.75, 59.85], [-124.82, 59.82], [-124.97, 59.47], [-125.32, 59.32], [-125.47, 58.97], [-126.0, 58.75], [-126.25, 58.85], [-126.5, 58.75], [-126.75, 58.85], [-126.82, 58.82], [-126.97, 58.47], [-127.5, 58.25], [-128.03, 58.47], [-128.18, 58.82], [-128.25, 58.85], [-128.32, 58.82], [-128.47, 58.47], [-129.0, 58.25], [-129.53, 58.47], [-129.75, 59.0], [-129.65, 59.25], [-129.68, 59.32], [-130.03, 59.47], [-130.25, 60.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 16.55997962025097}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 12.26440876824891}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-6.801280142521932, -4.964473520390072, -8.063695584150082, -7.302950993460399]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-4.980008373691419, -1.1390902739080957, -3.8426914069250984, -3.994157168120296]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [10.859563538454994, 14.111430858574552, 11.07827503799422, 11.869301938138985]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [11.669606521871998, 16.55997962025097, 13.186031043491028, 14.146573394566275]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4072154318343089, 1.9004133794697864, 1.4778759651938689, 1.5755231615320224]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4732554339509414, 2.2730039014049304, 1.6757081887036651, 1.815119972730367]}}