{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:21:11.269445", "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": "2019-Dec-31_to_2020-Jan-04_287.0_48.0"}, "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": 2019120002819}, "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 31 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 04 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 266714.7793879777}, "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", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America", "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": []}, "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": 48.0}, "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": 287.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 280.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 291.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 56.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.53, 46.47], [-75.75, 47.0], [-75.53, 47.53], [-75.0, 47.75], [-74.47, 47.53], [-74.25, 47.0], [-74.47, 46.47], [-75.0, 46.25], [-75.53, 46.47]]], [[[-79.75, 54.5], [-79.53, 55.03], [-79.0, 55.25], [-78.75, 55.15], [-78.68, 55.18], [-78.53, 55.53], [-78.0, 55.75], [-77.75, 55.65], [-77.68, 55.68], [-77.53, 56.03], [-77.0, 56.25], [-76.75, 56.15], [-76.5, 56.25], [-75.97, 56.03], [-75.82, 55.68], [-75.47, 55.53], [-75.32, 55.18], [-74.97, 55.03], [-74.75, 54.5], [-74.87, 54.2], [-74.75, 54.15], [-74.5, 54.25], [-73.97, 54.03], [-73.75, 53.5], [-73.85, 53.25], [-73.75, 53.0], [-73.85, 52.75], [-73.8, 52.62], [-73.5, 52.75], [-73.25, 52.65], [-73.0, 52.75], [-72.47, 52.53], [-72.32, 52.18], [-71.97, 52.03], [-71.75, 51.5], [-71.85, 51.25], [-71.75, 51.0], [-71.85, 50.75], [-71.75, 50.5], [-71.85, 50.25], [-71.82, 50.18], [-71.47, 50.03], [-71.25, 49.5], [-71.47, 48.97], [-71.82, 48.82], [-71.97, 48.47], [-72.32, 48.32], [-72.35, 48.25], [-72.32, 48.18], [-71.97, 48.03], [-71.75, 47.5], [-71.97, 46.97], [-72.5, 46.75], [-73.03, 46.97], [-73.18, 47.32], [-73.53, 47.47], [-73.7, 47.88], [-74.0, 47.75], [-74.53, 47.97], [-74.75, 48.5], [-74.62, 48.8], [-75.03, 48.97], [-75.25, 49.5], [-75.03, 50.03], [-74.68, 50.18], [-74.53, 50.53], [-74.18, 50.68], [-74.15, 50.75], [-74.25, 51.0], [-74.15, 51.25], [-74.25, 51.5], [-74.15, 51.75], [-74.2, 51.88], [-74.5, 51.75], [-74.75, 51.85], [-75.0, 51.75], [-75.25, 51.85], [-75.5, 51.75], [-76.03, 51.97], [-76.18, 52.32], [-76.25, 52.35], [-76.5, 52.25], [-76.75, 52.35], [-77.0, 52.25], [-77.53, 52.47], [-77.68, 52.82], [-78.03, 52.97], [-78.25, 53.5], [-78.15, 53.75], [-78.18, 53.82], [-78.25, 53.85], [-78.5, 53.75], [-78.75, 53.85], [-79.0, 53.75], [-79.53, 53.97], [-79.75, 54.5]]]]}, "2020-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.53, 53.97], [-79.75, 54.5], [-79.53, 55.03], [-79.0, 55.25], [-78.75, 55.15], [-78.68, 55.18], [-78.53, 55.53], [-78.0, 55.75], [-77.75, 55.65], [-77.68, 55.68], [-77.53, 56.03], [-77.18, 56.18], [-77.03, 56.53], [-76.5, 56.75], [-75.97, 56.53], [-75.82, 56.18], [-75.75, 56.15], [-75.5, 56.25], [-75.25, 56.15], [-75.0, 56.25], [-74.75, 56.15], [-74.5, 56.25], [-74.25, 56.15], [-74.0, 56.25], [-73.47, 56.03], [-73.25, 55.5], [-73.35, 55.25], [-73.25, 55.0], [-73.35, 54.75], [-73.25, 54.5], [-73.47, 53.97], [-73.82, 53.82], [-73.85, 53.75], [-73.75, 53.5], [-73.85, 53.25], [-73.82, 53.18], [-73.47, 53.03], [-73.32, 52.68], [-73.25, 52.65], [-73.0, 52.75], [-72.47, 52.53], [-72.32, 52.18], [-71.97, 52.03], [-71.82, 51.68], [-71.47, 51.53], [-71.32, 51.18], [-70.97, 51.03], [-70.75, 50.5], [-70.85, 50.25], [-70.75, 50.0], [-70.97, 49.47], [-71.32, 49.32], [-71.47, 48.97], [-71.82, 48.82], [-71.97, 48.47], [-72.32, 48.32], [-72.35, 48.25], [-72.32, 48.18], [-71.97, 48.03], [-71.75, 47.5], [-71.85, 47.25], [-71.75, 47.0], [-71.97, 46.47], [-72.32, 46.32], [-72.35, 46.25], [-72.25, 46.0], [-72.47, 45.47], [-73.0, 45.25], [-73.53, 45.47], [-73.68, 45.82], [-73.75, 45.85], [-74.0, 45.75], [-74.25, 45.85], [-74.5, 45.75], [-75.03, 45.97], [-75.18, 46.32], [-75.53, 46.47], [-75.75, 47.0], [-75.65, 47.25], [-75.75, 47.5], [-75.53, 48.03], [-75.12, 48.2], [-75.25, 48.5], [-75.04, 49.0], [-75.25, 49.5], [-75.03, 50.03], [-74.68, 50.18], [-74.53, 50.53], [-74.18, 50.68], [-74.15, 50.75], [-74.25, 51.0], [-74.15, 51.25], [-74.25, 51.5], [-74.15, 51.75], [-74.18, 51.82], [-74.25, 51.85], [-74.5, 51.75], [-74.75, 51.85], [-75.0, 51.75], [-75.25, 51.85], [-75.5, 51.75], [-76.03, 51.97], [-76.18, 52.32], [-76.25, 52.35], [-76.5, 52.25], [-76.75, 52.35], [-77.0, 52.25], [-77.53, 52.47], [-77.68, 52.82], [-78.03, 52.97], [-78.25, 53.5], [-78.15, 53.75], [-78.18, 53.82], [-78.25, 53.85], [-78.5, 53.75], [-78.75, 53.85], [-79.0, 53.75], [-79.53, 53.97]]]]}, "2020-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.53, 53.97], [-79.75, 54.5], [-79.53, 55.03], [-79.0, 55.25], [-78.75, 55.15], [-78.68, 55.18], [-78.53, 55.53], [-78.0, 55.75], [-77.75, 55.65], [-77.68, 55.68], [-77.53, 56.03], [-77.18, 56.18], [-77.03, 56.53], [-76.5, 56.75], [-75.97, 56.53], [-75.82, 56.18], [-75.75, 56.15], [-75.5, 56.25], [-75.25, 56.15], [-75.0, 56.25], [-74.75, 56.15], [-74.5, 56.25], [-74.25, 56.15], [-74.0, 56.25], [-73.47, 56.03], [-73.25, 55.5], [-73.35, 55.25], [-73.25, 55.0], [-73.35, 54.75], [-73.25, 54.5], [-73.47, 53.97], [-73.82, 53.82], [-73.85, 53.75], [-73.75, 53.5], [-73.85, 53.25], [-73.82, 53.18], [-73.47, 53.03], [-73.32, 52.68], [-73.25, 52.65], [-73.0, 52.75], [-72.47, 52.53], [-72.32, 52.18], [-71.97, 52.03], [-71.82, 51.68], [-71.47, 51.53], [-71.32, 51.18], [-70.97, 51.03], [-70.75, 50.5], [-70.85, 50.25], [-70.82, 50.18], [-70.75, 50.15], [-70.5, 50.25], [-69.97, 50.03], [-69.75, 49.5], [-69.97, 48.97], [-70.37, 48.8], [-70.32, 48.68], [-69.97, 48.53], [-69.8, 48.12], [-69.5, 48.25], [-69.25, 48.15], [-69.0, 48.25], [-68.47, 48.03], [-68.32, 47.68], [-67.97, 47.53], [-67.75, 47.0], [-67.97, 46.47], [-68.5, 46.25], [-68.93, 46.43], [-68.75, 46.0], [-68.85, 45.75], [-68.75, 45.5], [-68.97, 44.97], [-69.5, 44.75], [-69.75, 44.85], [-69.82, 44.82], [-69.97, 44.47], [-70.5, 44.25], [-70.75, 44.35], [-71.0, 44.25], [-71.53, 44.47], [-71.75, 45.0], [-71.54, 45.5], [-71.68, 45.82], [-71.75, 45.85], [-72.0, 45.75], [-72.25, 45.85], [-72.32, 45.82], [-72.47, 45.47], [-73.0, 45.25], [-73.53, 45.47], [-73.68, 45.82], [-73.75, 45.85], [-74.0, 45.75], [-74.25, 45.85], [-74.5, 45.75], [-75.03, 45.97], [-75.18, 46.32], [-75.53, 46.47], [-75.75, 47.0], [-75.65, 47.25], [-75.75, 47.5], [-75.53, 48.03], [-75.12, 48.2], [-75.25, 48.5], [-75.04, 49.0], [-75.25, 49.5], [-75.03, 50.03], [-74.68, 50.18], [-74.53, 50.53], [-74.18, 50.68], [-74.15, 50.75], [-74.25, 51.0], [-74.15, 51.25], [-74.25, 51.5], [-74.15, 51.75], [-74.18, 51.82], [-74.25, 51.85], [-74.5, 51.75], [-74.75, 51.85], [-75.0, 51.75], [-75.25, 51.85], [-75.5, 51.75], [-76.03, 51.97], [-76.18, 52.32], [-76.25, 52.35], [-76.5, 52.25], [-76.75, 52.35], [-77.0, 52.25], [-77.53, 52.47], [-77.68, 52.82], [-78.03, 52.97], [-78.25, 53.5], [-78.15, 53.75], [-78.18, 53.82], [-78.25, 53.85], [-78.5, 53.75], [-78.75, 53.85], [-79.0, 53.75], [-79.53, 53.97]]]]}, "2020-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.75, 54.5], [-78.53, 55.03], [-78.0, 55.25], [-77.75, 55.15], [-77.68, 55.18], [-77.65, 55.25], [-77.75, 55.5], [-77.53, 56.03], [-77.18, 56.18], [-77.03, 56.53], [-76.5, 56.75], [-75.97, 56.53], [-75.82, 56.18], [-75.75, 56.15], [-75.5, 56.25], [-75.25, 56.15], [-75.0, 56.25], [-74.75, 56.15], [-74.5, 56.25], [-74.25, 56.15], [-74.0, 56.25], [-73.47, 56.03], [-73.25, 55.5], [-73.35, 55.25], [-73.25, 55.0], [-73.35, 54.75], [-73.25, 54.5], [-73.47, 53.97], [-73.82, 53.82], [-73.85, 53.75], [-73.75, 53.5], [-73.85, 53.25], [-73.82, 53.18], [-73.47, 53.03], [-73.32, 52.68], [-73.25, 52.65], [-73.0, 52.75], [-72.47, 52.53], [-72.32, 52.18], [-71.97, 52.03], [-71.82, 51.68], [-71.47, 51.53], [-71.32, 51.18], [-70.97, 51.03], [-70.75, 50.5], [-70.85, 50.25], [-70.82, 50.18], [-70.75, 50.15], [-70.5, 50.25], [-69.97, 50.03], [-69.75, 49.5], [-69.97, 48.97], [-70.37, 48.8], [-70.32, 48.68], [-69.97, 48.53], [-69.8, 48.12], [-69.5, 48.25], [-69.25, 48.15], [-69.0, 48.25], [-68.47, 48.03], [-68.32, 47.68], [-67.97, 47.53], [-67.75, 47.0], [-67.97, 46.47], [-68.5, 46.25], [-68.93, 46.43], [-68.75, 46.0], [-68.85, 45.75], [-68.75, 45.5], [-68.97, 44.97], [-69.5, 44.75], [-69.75, 44.85], [-69.82, 44.82], [-69.97, 44.47], [-70.5, 44.25], [-70.75, 44.35], [-71.0, 44.25], [-71.53, 44.47], [-71.75, 45.0], [-71.54, 45.5], [-71.68, 45.82], [-71.75, 45.85], [-72.0, 45.75], [-72.25, 45.85], [-72.32, 45.82], [-72.47, 45.47], [-73.0, 45.25], [-73.53, 45.47], [-73.68, 45.82], [-73.75, 45.85], [-74.0, 45.75], [-74.25, 45.85], [-74.5, 45.75], [-75.03, 45.97], [-75.18, 46.32], [-75.53, 46.47], [-75.75, 47.0], [-75.65, 47.25], [-75.75, 47.5], [-75.53, 48.03], [-75.12, 48.2], [-75.25, 48.5], [-75.04, 49.0], [-75.25, 49.5], [-75.03, 50.03], [-74.68, 50.18], [-74.53, 50.53], [-74.18, 50.68], [-74.15, 50.75], [-74.25, 51.0], [-74.15, 51.25], [-74.25, 51.5], [-74.15, 51.75], [-74.18, 51.82], [-74.25, 51.85], [-74.5, 51.75], [-74.75, 51.85], [-75.0, 51.75], [-75.25, 51.85], [-75.5, 51.75], [-76.03, 51.97], [-76.18, 52.32], [-76.25, 52.35], [-76.5, 52.25], [-76.75, 52.35], [-77.0, 52.25], [-77.53, 52.47], [-77.68, 52.82], [-78.03, 52.97], [-78.25, 53.5], [-78.15, 53.75], [-78.18, 53.82], [-78.53, 53.97], [-78.75, 54.5]]]]}, "2020-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.75, 47.0], [-75.53, 47.53], [-75.18, 47.68], [-75.03, 48.03], [-74.5, 48.25], [-74.25, 48.15], [-74.18, 48.18], [-74.03, 48.53], [-73.5, 48.75], [-73.25, 48.65], [-73.18, 48.68], [-73.15, 48.75], [-73.25, 49.0], [-73.15, 49.25], [-73.25, 49.5], [-73.03, 50.03], [-72.68, 50.18], [-72.53, 50.53], [-72.18, 50.68], [-72.03, 51.03], [-71.5, 51.25], [-70.97, 51.03], [-70.75, 50.5], [-70.85, 50.25], [-70.82, 50.18], [-70.75, 50.15], [-70.5, 50.25], [-69.97, 50.03], [-69.75, 49.5], [-69.97, 48.97], [-70.37, 48.8], [-70.32, 48.68], [-69.97, 48.53], [-69.8, 48.12], [-69.5, 48.25], [-69.25, 48.15], [-69.0, 48.25], [-68.47, 48.03], [-68.32, 47.68], [-67.97, 47.53], [-67.75, 47.0], [-67.97, 46.47], [-68.5, 46.25], [-68.93, 46.43], [-68.75, 46.0], [-68.85, 45.75], [-68.75, 45.5], [-68.97, 44.97], [-69.5, 44.75], [-69.75, 44.85], [-69.82, 44.82], [-69.97, 44.47], [-70.5, 44.25], [-70.75, 44.35], [-71.0, 44.25], [-71.53, 44.47], [-71.75, 45.0], [-71.54, 45.5], [-71.68, 45.82], [-71.75, 45.85], [-72.0, 45.75], [-72.25, 45.85], [-72.5, 45.75], [-72.75, 45.85], [-73.0, 45.75], [-73.25, 45.85], [-73.5, 45.75], [-73.75, 45.85], [-74.0, 45.75], [-74.25, 45.85], [-74.5, 45.75], [-75.03, 45.97], [-75.18, 46.32], [-75.53, 46.47], [-75.75, 47.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 16.196546695394062}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 11.469981394971018}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-7.736197741194758, -5.9408186499013595, -5.974990270769865, -4.668282104963964, -2.107819480296996]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.5186910343488194, -0.4348564549580374, -0.8327648488178738, 2.2042841942842415, 0.9295481343830261]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [11.05466214514177, 12.598256243822789, 10.845173263301943, 11.83284661342387, 10.492946681304304]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [13.287011257119616, 16.196546695394062, 14.803740334006477, 13.484254621351283, 11.674522146556]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4676984289170367, 1.6331391226912209, 1.40148718140337, 1.5032821297595589, 1.4155980061381845]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.765892025550504, 2.035197108686849, 1.7235154807224666, 1.7112687148154833, 1.631899965169952]}}