{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:01.767445", "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": "2026-Jan-07_to_2026-Jan-09_282.5_50.5"}, "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": 2026010001489}, "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": "January 07 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 2026"}, "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": 57490.11174552433}, "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": ["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": 50.5}, "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": 282.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "282.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 277.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 285.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.53, 49.53], [-82.0, 49.75], [-81.75, 49.65], [-81.5, 49.75], [-81.25, 49.65], [-81.18, 49.68], [-81.03, 50.03], [-80.5, 50.25], [-80.25, 50.15], [-80.0, 50.25], [-79.75, 50.15], [-79.5, 50.25], [-79.25, 50.15], [-79.18, 50.18], [-79.03, 50.53], [-78.68, 50.68], [-78.53, 51.03], [-78.0, 51.25], [-77.75, 51.15], [-77.68, 51.18], [-77.53, 51.53], [-77.0, 51.75], [-76.75, 51.65], [-76.5, 51.75], [-76.25, 51.65], [-76.18, 51.68], [-76.03, 52.03], [-75.5, 52.25], [-75.25, 52.15], [-75.0, 52.25], [-74.47, 52.03], [-74.32, 51.68], [-73.97, 51.53], [-73.75, 51.0], [-73.97, 50.47], [-74.5, 50.25], [-74.75, 50.35], [-74.82, 50.32], [-74.97, 49.97], [-75.5, 49.75], [-75.75, 49.85], [-76.0, 49.75], [-76.25, 49.85], [-76.32, 49.82], [-76.47, 49.47], [-77.0, 49.25], [-77.25, 49.35], [-77.5, 49.25], [-77.75, 49.35], [-77.82, 49.32], [-77.97, 48.97], [-78.5, 48.75], [-78.75, 48.85], [-79.0, 48.75], [-79.25, 48.85], [-79.32, 48.82], [-79.47, 48.47], [-80.0, 48.25], [-80.25, 48.35], [-80.5, 48.25], [-80.75, 48.35], [-81.0, 48.25], [-81.25, 48.35], [-81.32, 48.32], [-81.47, 47.97], [-82.0, 47.75], [-82.53, 47.97], [-82.75, 48.5], [-82.65, 48.75], [-82.75, 49.0], [-82.53, 49.53]]]]}, "2026-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.53, 49.53], [-82.0, 49.75], [-81.75, 49.65], [-81.5, 49.75], [-81.25, 49.65], [-81.18, 49.68], [-81.03, 50.03], [-80.5, 50.25], [-80.25, 50.15], [-80.0, 50.25], [-79.75, 50.15], [-79.5, 50.25], [-79.25, 50.15], [-79.18, 50.18], [-79.03, 50.53], [-78.68, 50.68], [-78.53, 51.03], [-78.0, 51.25], [-77.75, 51.15], [-77.68, 51.18], [-77.53, 51.53], [-77.0, 51.75], [-76.75, 51.65], [-76.5, 51.75], [-76.25, 51.65], [-76.18, 51.68], [-76.03, 52.03], [-75.5, 52.25], [-75.25, 52.15], [-75.0, 52.25], [-74.47, 52.03], [-74.32, 51.68], [-73.97, 51.53], [-73.75, 51.0], [-73.97, 50.47], [-74.5, 50.25], [-74.75, 50.35], [-74.82, 50.32], [-74.97, 49.97], [-75.5, 49.75], [-75.75, 49.85], [-76.0, 49.75], [-76.25, 49.85], [-76.32, 49.82], [-76.47, 49.47], [-77.0, 49.25], [-77.25, 49.35], [-77.5, 49.25], [-77.75, 49.35], [-77.82, 49.32], [-77.97, 48.97], [-78.5, 48.75], [-78.75, 48.85], [-79.0, 48.75], [-79.25, 48.85], [-79.32, 48.82], [-79.47, 48.47], [-80.0, 48.25], [-80.25, 48.35], [-80.5, 48.25], [-80.75, 48.35], [-81.0, 48.25], [-81.25, 48.35], [-81.32, 48.32], [-81.47, 47.97], [-82.0, 47.75], [-82.53, 47.97], [-82.75, 48.5], [-82.65, 48.75], [-82.75, 49.0], [-82.53, 49.53]]]]}, "2026-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.53, 49.53], [-82.0, 49.75], [-81.75, 49.65], [-81.5, 49.75], [-81.25, 49.65], [-81.18, 49.68], [-81.03, 50.03], [-80.5, 50.25], [-80.25, 50.15], [-80.0, 50.25], [-79.75, 50.15], [-79.5, 50.25], [-79.25, 50.15], [-79.18, 50.18], [-79.03, 50.53], [-78.68, 50.68], [-78.53, 51.03], [-78.0, 51.25], [-77.75, 51.15], [-77.68, 51.18], [-77.53, 51.53], [-77.0, 51.75], [-76.75, 51.65], [-76.5, 51.75], [-76.25, 51.65], [-76.18, 51.68], [-76.03, 52.03], [-75.5, 52.25], [-75.25, 52.15], [-75.0, 52.25], [-74.47, 52.03], [-74.32, 51.68], [-73.97, 51.53], [-73.75, 51.0], [-73.97, 50.47], [-74.5, 50.25], [-74.75, 50.35], [-74.82, 50.32], [-74.97, 49.97], [-75.5, 49.75], [-75.75, 49.85], [-76.0, 49.75], [-76.25, 49.85], [-76.32, 49.82], [-76.47, 49.47], [-77.0, 49.25], [-77.25, 49.35], [-77.5, 49.25], [-77.75, 49.35], [-77.82, 49.32], [-77.97, 48.97], [-78.5, 48.75], [-78.75, 48.85], [-79.0, 48.75], [-79.25, 48.85], [-79.32, 48.82], [-79.47, 48.47], [-80.0, 48.25], [-80.25, 48.35], [-80.5, 48.25], [-80.75, 48.35], [-81.0, 48.25], [-81.25, 48.35], [-81.32, 48.32], [-81.47, 47.97], [-82.0, 47.75], [-82.53, 47.97], [-82.75, 48.5], [-82.65, 48.75], [-82.75, 49.0], [-82.53, 49.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 17.222796982077114}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 14.026214254923781}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-4.606495833122835, -2.9190370493921023, -0.6999268016596147]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.6850557963053348, -0.351432545979776, -0.316856129964151]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [12.139783355286268, 13.85606119129518, 16.082798218189915]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [12.878754810543882, 14.962414650972335, 17.222796982077114]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4519944351330494, 1.6468956397967616, 1.953003554809491]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5229008506471706, 1.7738265332591419, 2.117731509683992]}}