{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:34.319842", "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-Sep-21_to_2020-Sep-23_291.5_58.5"}, "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": 2020090002146}, "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": "September 21 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 23 2020"}, "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": 90937.81302453003}, "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": ["Hudson Strait"]}, "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": 58.5}, "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": 291.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 293.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.25, 60.0], [-73.03, 60.53], [-72.5, 60.75], [-72.25, 60.65], [-72.0, 60.75], [-71.75, 60.65], [-71.5, 60.75], [-70.97, 60.53], [-70.82, 60.18], [-70.75, 60.15], [-70.5, 60.25], [-70.25, 60.15], [-70.0, 60.25], [-69.75, 60.15], [-69.5, 60.25], [-69.25, 60.15], [-69.0, 60.25], [-68.47, 60.03], [-68.32, 59.68], [-68.25, 59.65], [-68.0, 59.75], [-67.75, 59.65], [-67.5, 59.75], [-66.97, 59.53], [-66.82, 59.18], [-66.47, 59.03], [-66.32, 58.68], [-65.97, 58.53], [-65.75, 58.0], [-65.97, 57.47], [-66.32, 57.32], [-66.47, 56.97], [-66.82, 56.82], [-66.97, 56.47], [-67.5, 56.25], [-67.75, 56.35], [-67.82, 56.32], [-67.97, 55.97], [-68.5, 55.75], [-68.75, 55.85], [-69.0, 55.75], [-69.25, 55.85], [-69.5, 55.75], [-70.03, 55.97], [-70.18, 56.32], [-70.53, 56.47], [-70.68, 56.82], [-71.03, 56.97], [-71.25, 57.5], [-71.15, 57.75], [-71.18, 57.82], [-71.25, 57.85], [-71.5, 57.75], [-72.03, 57.97], [-72.18, 58.32], [-72.53, 58.47], [-72.75, 59.0], [-72.65, 59.25], [-72.68, 59.32], [-73.03, 59.47], [-73.25, 60.0]]]]}, "2020-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.25, 60.0], [-73.03, 60.53], [-72.5, 60.75], [-72.25, 60.65], [-72.0, 60.75], [-71.75, 60.65], [-71.5, 60.75], [-70.97, 60.53], [-70.82, 60.18], [-70.75, 60.15], [-70.5, 60.25], [-70.25, 60.15], [-70.0, 60.25], [-69.75, 60.15], [-69.5, 60.25], [-69.25, 60.15], [-69.0, 60.25], [-68.47, 60.03], [-68.32, 59.68], [-68.25, 59.65], [-68.0, 59.75], [-67.75, 59.65], [-67.5, 59.75], [-66.97, 59.53], [-66.82, 59.18], [-66.47, 59.03], [-66.32, 58.68], [-65.97, 58.53], [-65.75, 58.0], [-65.97, 57.47], [-66.32, 57.32], [-66.47, 56.97], [-66.82, 56.82], [-66.97, 56.47], [-67.5, 56.25], [-67.75, 56.35], [-67.82, 56.32], [-67.97, 55.97], [-68.5, 55.75], [-68.75, 55.85], [-69.0, 55.75], [-69.25, 55.85], [-69.5, 55.75], [-70.03, 55.97], [-70.18, 56.32], [-70.53, 56.47], [-70.68, 56.82], [-71.03, 56.97], [-71.25, 57.5], [-71.15, 57.75], [-71.18, 57.82], [-71.25, 57.85], [-71.5, 57.75], [-72.03, 57.97], [-72.18, 58.32], [-72.53, 58.47], [-72.75, 59.0], [-72.65, 59.25], [-72.68, 59.32], [-73.03, 59.47], [-73.25, 60.0]]]]}, "2020-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.25, 60.0], [-73.03, 60.53], [-72.5, 60.75], [-72.25, 60.65], [-72.0, 60.75], [-71.75, 60.65], [-71.5, 60.75], [-70.97, 60.53], [-70.82, 60.18], [-70.75, 60.15], [-70.5, 60.25], [-70.25, 60.15], [-70.0, 60.25], [-69.75, 60.15], [-69.5, 60.25], [-69.25, 60.15], [-69.0, 60.25], [-68.47, 60.03], [-68.32, 59.68], [-68.25, 59.65], [-68.0, 59.75], [-67.75, 59.65], [-67.5, 59.75], [-66.97, 59.53], [-66.82, 59.18], [-66.47, 59.03], [-66.32, 58.68], [-65.97, 58.53], [-65.75, 58.0], [-65.97, 57.47], [-66.32, 57.32], [-66.47, 56.97], [-66.82, 56.82], [-66.97, 56.47], [-67.5, 56.25], [-67.75, 56.35], [-67.82, 56.32], [-67.97, 55.97], [-68.5, 55.75], [-68.75, 55.85], [-69.0, 55.75], [-69.25, 55.85], [-69.5, 55.75], [-70.03, 55.97], [-70.18, 56.32], [-70.53, 56.47], [-70.68, 56.82], [-71.03, 56.97], [-71.25, 57.5], [-71.15, 57.75], [-71.18, 57.82], [-71.25, 57.85], [-71.5, 57.75], [-72.03, 57.97], [-72.18, 58.32], [-72.53, 58.47], [-72.75, 59.0], [-72.65, 59.25], [-72.68, 59.32], [-73.03, 59.47], [-73.25, 60.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.398026744020456}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.744975322839869}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.627860326973348, 11.239301609736515, 9.26256795751624]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.788374630001158, 13.547079598837911, 11.491101707242478]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.154011832331707, 6.92974583274154, 5.151168303446357]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.543946557513607, 8.398026744020456, 6.6691304560756635]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.819938689768908, 2.3678946110473076, 1.7533537086559132]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2479877423987107, 2.6616140491230085, 2.1508731571146145]}}