{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:55.877995", "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-Apr-04_to_2023-Apr-06_282.0_39.0"}, "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": 2023040001335}, "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": "April 04 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 06 2023"}, "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": 185562.8031708486}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["North Atlantic Ocean"]}, "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": 39.0}, "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": 282.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "282.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 278.25}, "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": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 38.03], [-81.5, 38.25], [-81.25, 38.15], [-81.0, 38.25], [-80.75, 38.15], [-80.68, 38.18], [-80.65, 38.25], [-80.75, 38.5], [-80.53, 39.03], [-80.18, 39.18], [-80.15, 39.25], [-80.25, 39.5], [-80.03, 40.03], [-79.68, 40.18], [-79.53, 40.53], [-79.18, 40.68], [-79.03, 41.03], [-78.68, 41.18], [-78.65, 41.25], [-78.75, 41.5], [-78.65, 41.75], [-78.75, 42.0], [-78.53, 42.53], [-78.0, 42.75], [-77.75, 42.65], [-77.5, 42.75], [-77.25, 42.65], [-77.0, 42.75], [-76.75, 42.65], [-76.5, 42.75], [-76.25, 42.65], [-76.0, 42.75], [-75.75, 42.65], [-75.5, 42.75], [-74.97, 42.53], [-74.75, 42.0], [-74.85, 41.75], [-74.75, 41.5], [-74.85, 41.25], [-74.82, 41.18], [-74.47, 41.03], [-74.32, 40.68], [-73.97, 40.53], [-73.75, 40.0], [-73.97, 39.47], [-74.32, 39.32], [-74.35, 39.25], [-74.25, 39.0], [-74.47, 38.47], [-74.82, 38.32], [-74.97, 37.97], [-75.5, 37.75], [-75.75, 37.85], [-76.0, 37.75], [-76.25, 37.85], [-76.32, 37.82], [-76.47, 37.47], [-77.0, 37.25], [-77.25, 37.35], [-77.5, 37.25], [-77.75, 37.35], [-78.0, 37.25], [-78.25, 37.35], [-78.5, 37.25], [-78.75, 37.35], [-79.0, 37.25], [-79.25, 37.35], [-79.5, 37.25], [-79.75, 37.35], [-79.82, 37.32], [-79.97, 36.97], [-80.32, 36.82], [-80.47, 36.47], [-81.0, 36.25], [-81.25, 36.35], [-81.5, 36.25], [-82.03, 36.47], [-82.25, 37.0], [-82.15, 37.25], [-82.25, 37.5], [-82.03, 38.03]]]]}, "2023-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 38.03], [-81.5, 38.25], [-81.25, 38.15], [-81.0, 38.25], [-80.75, 38.15], [-80.68, 38.18], [-80.65, 38.25], [-80.75, 38.5], [-80.53, 39.03], [-80.18, 39.18], [-80.15, 39.25], [-80.25, 39.5], [-80.03, 40.03], [-79.68, 40.18], [-79.53, 40.53], [-79.18, 40.68], [-79.03, 41.03], [-78.68, 41.18], [-78.65, 41.25], [-78.75, 41.5], [-78.65, 41.75], [-78.75, 42.0], [-78.53, 42.53], [-78.0, 42.75], [-77.75, 42.65], [-77.5, 42.75], [-77.25, 42.65], [-77.0, 42.75], [-76.75, 42.65], [-76.5, 42.75], [-76.25, 42.65], [-76.0, 42.75], [-75.75, 42.65], [-75.5, 42.75], [-74.97, 42.53], [-74.75, 42.0], [-74.85, 41.75], [-74.75, 41.5], [-74.85, 41.25], [-74.82, 41.18], [-74.47, 41.03], [-74.32, 40.68], [-73.97, 40.53], [-73.75, 40.0], [-73.97, 39.47], [-74.32, 39.32], [-74.35, 39.25], [-74.25, 39.0], [-74.47, 38.47], [-74.82, 38.32], [-74.97, 37.97], [-75.5, 37.75], [-75.75, 37.85], [-76.0, 37.75], [-76.25, 37.85], [-76.32, 37.82], [-76.47, 37.47], [-77.0, 37.25], [-77.25, 37.35], [-77.5, 37.25], [-77.75, 37.35], [-78.0, 37.25], [-78.25, 37.35], [-78.5, 37.25], [-78.75, 37.35], [-79.0, 37.25], [-79.25, 37.35], [-79.5, 37.25], [-79.75, 37.35], [-79.82, 37.32], [-79.97, 36.97], [-80.32, 36.82], [-80.47, 36.47], [-81.0, 36.25], [-81.25, 36.35], [-81.5, 36.25], [-82.03, 36.47], [-82.25, 37.0], [-82.15, 37.25], [-82.25, 37.5], [-82.03, 38.03]]]]}, "2023-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 38.03], [-81.5, 38.25], [-81.25, 38.15], [-81.0, 38.25], [-80.75, 38.15], [-80.68, 38.18], [-80.65, 38.25], [-80.75, 38.5], [-80.53, 39.03], [-80.18, 39.18], [-80.15, 39.25], [-80.25, 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36.82], [-80.47, 36.47], [-81.0, 36.25], [-81.25, 36.35], [-81.5, 36.25], [-82.03, 36.47], [-82.25, 37.0], [-82.15, 37.25], [-82.25, 37.5], [-82.03, 38.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.401459762561956}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.450525134214764}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.067819080483048, 18.42151360815734, 18.35455829711384]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.614689429735165, 23.019410670203683, 24.98600125395103]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.080585971419996, 9.259381677855382, 9.011607753368912]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.449080610457997, 12.401459762561956, 11.88278943304175]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5279246917438303, 2.0290671726111023, 2.0088650685178457]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7341138696941834, 2.383027089572233, 2.5971145879248634]}}