{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:38.517729", "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": "2020-Dec-08_to_2020-Dec-11_301.5_51.0"}, "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": 2020120001788}, "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 08 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 11 2020"}, "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": 65803.27083598726}, "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.E.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": ["Gulf of St. Lawrence", "Labrador Sea"]}, "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": 51.0}, "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": 301.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 300.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 304.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.03, 55.03], [-59.5, 55.25], [-59.25, 55.15], [-59.0, 55.25], [-58.75, 55.15], [-58.5, 55.25], [-58.25, 55.15], [-58.0, 55.25], [-57.47, 55.03], [-57.32, 54.68], [-56.97, 54.53], [-56.75, 54.0], [-56.93, 53.57], [-56.5, 53.75], [-56.25, 53.65], [-56.0, 53.75], [-55.47, 53.53], [-55.25, 53.0], [-55.35, 52.75], [-55.25, 52.5], [-55.35, 52.25], [-55.25, 52.0], [-55.47, 51.47], [-56.0, 51.25], [-56.25, 51.35], [-56.32, 51.32], [-56.47, 50.97], [-57.0, 50.75], [-57.25, 50.85], [-57.32, 50.82], [-57.47, 50.47], [-58.0, 50.25], [-58.25, 50.35], [-58.5, 50.25], [-59.03, 50.47], [-59.25, 51.0], [-59.15, 51.25], [-59.25, 51.5], [-59.15, 51.75], [-59.25, 52.0], [-59.04, 52.5], [-59.25, 53.0], [-59.15, 53.25], [-59.18, 53.32], [-59.25, 53.35], [-59.5, 53.25], [-60.03, 53.47], [-60.25, 54.0], [-60.15, 54.25], [-60.25, 54.5], [-60.03, 55.03]], [[-57.18, 53.18], [-57.07, 53.43], [-57.32, 53.32], [-57.35, 53.25], [-57.32, 53.18], [-57.25, 53.15], [-57.18, 53.18]]]]}, "2020-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.03, 51.53], [-59.5, 51.75], [-59.25, 51.65], [-59.18, 51.68], [-59.15, 51.75], [-59.25, 52.0], [-59.04, 52.5], [-59.25, 53.0], [-59.15, 53.25], [-59.18, 53.32], [-59.25, 53.35], [-59.5, 53.25], [-60.03, 53.47], [-60.25, 54.0], [-60.15, 54.25], [-60.25, 54.5], [-60.03, 55.03], [-59.5, 55.25], [-59.25, 55.15], [-59.0, 55.25], [-58.75, 55.15], [-58.5, 55.25], [-58.25, 55.15], [-58.0, 55.25], [-57.47, 55.03], [-57.32, 54.68], [-56.97, 54.53], [-56.75, 54.0], [-56.93, 53.57], [-56.5, 53.75], [-56.25, 53.65], [-56.0, 53.75], [-55.47, 53.53], [-55.25, 53.0], [-55.35, 52.75], [-55.25, 52.5], [-55.35, 52.25], [-55.25, 52.0], [-55.47, 51.47], [-56.0, 51.25], [-56.25, 51.35], [-56.32, 51.32], [-56.47, 50.97], [-57.0, 50.75], [-57.25, 50.85], [-57.32, 50.82], [-57.47, 50.47], [-58.0, 50.25], [-58.25, 50.35], [-58.32, 50.32], [-58.47, 49.97], [-59.0, 49.75], [-59.25, 49.85], [-59.5, 49.75], [-60.03, 49.97], [-60.25, 50.5], [-60.15, 50.75], [-60.25, 51.0], [-60.03, 51.53]], [[-57.18, 53.18], [-57.07, 53.43], [-57.32, 53.32], [-57.35, 53.25], [-57.32, 53.18], [-57.25, 53.15], [-57.18, 53.18]]]]}, "2020-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.03, 51.53], [-59.5, 51.75], [-59.25, 51.65], [-59.18, 51.68], [-59.15, 51.75], [-59.25, 52.0], [-59.04, 52.5], [-59.25, 53.0], [-59.15, 53.25], [-59.18, 53.32], [-59.25, 53.35], [-59.5, 53.25], [-60.03, 53.47], [-60.25, 54.0], [-60.15, 54.25], [-60.25, 54.5], [-60.03, 55.03], [-59.5, 55.25], [-59.25, 55.15], [-59.0, 55.25], [-58.75, 55.15], [-58.5, 55.25], [-58.25, 55.15], [-58.0, 55.25], [-57.47, 55.03], [-57.32, 54.68], [-56.97, 54.53], [-56.75, 54.0], [-56.93, 53.57], [-56.5, 53.75], [-56.25, 53.65], [-56.0, 53.75], [-55.47, 53.53], [-55.25, 53.0], [-55.35, 52.75], [-55.25, 52.5], [-55.35, 52.25], [-55.25, 52.0], [-55.47, 51.47], [-56.0, 51.25], [-56.25, 51.35], [-56.32, 51.32], [-56.47, 50.97], [-57.0, 50.75], [-57.25, 50.85], [-57.32, 50.82], [-57.47, 50.47], [-58.0, 50.25], [-58.25, 50.35], [-58.32, 50.32], [-58.47, 49.97], [-59.0, 49.75], [-59.25, 49.85], [-59.5, 49.75], [-60.03, 49.97], [-60.25, 50.5], [-60.15, 50.75], [-60.25, 51.0], [-60.03, 51.53]], [[-57.18, 53.18], [-57.07, 53.43], [-57.32, 53.32], [-57.35, 53.25], [-57.32, 53.18], [-57.25, 53.15], [-57.18, 53.18]]]]}, "2020-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.03, 51.53], [-59.5, 51.75], [-59.25, 51.65], [-59.0, 51.75], [-58.75, 51.65], [-58.5, 51.75], [-57.97, 51.53], [-57.75, 51.0], [-57.97, 50.47], [-58.32, 50.32], [-58.47, 49.97], [-59.0, 49.75], [-59.25, 49.85], [-59.5, 49.75], [-60.03, 49.97], [-60.25, 50.5], [-60.15, 50.75], [-60.25, 51.0], [-60.03, 51.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.547502246032138}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.385031145854933}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.40492825230728613, 0.7781250559285127, -0.6984342844480125, 0.9452521084093064]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.271716234819962, 3.0530608498054903, 2.5295493199896555, 1.8946735772652232]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.296146361247695, 9.231649272670865, 7.895186968150516, 6.438699166639185]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.259387047348582, 10.547502246032138, 8.936241320297711, 8.17416690330839]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.42725206587055, 1.5831827407819112, 1.343857849089585, 1.2547503847652817]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.597884208791232, 1.788943539832049, 1.4957152840616592, 1.3038246172297634]}}