{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:15.638548", "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-Aug-21_to_2020-Aug-25_282.0_41.0"}, "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": 2020080002500}, "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": "August 21 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 25 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": 99555.65548279439}, "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": 41.0}, "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": 279.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 286.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.0, 41.75], [-77.47, 41.53], [-77.25, 41.0], [-77.47, 40.47], [-78.0, 40.25], [-78.53, 40.47], [-78.75, 41.0], [-78.53, 41.53], [-78.0, 41.75]]]]}, "2020-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.53, 41.03], [-80.18, 41.18], [-80.03, 41.53], [-79.68, 41.68], [-79.53, 42.03], [-79.18, 42.18], [-79.03, 42.53], [-78.5, 42.75], [-78.25, 42.65], [-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], [-75.97, 42.53], [-75.82, 42.18], [-75.75, 42.15], [-75.5, 42.25], [-75.25, 42.15], [-75.0, 42.25], [-74.75, 42.15], [-74.5, 42.25], [-74.25, 42.15], [-74.18, 42.18], [-74.03, 42.53], [-73.5, 42.75], [-72.97, 42.53], [-72.75, 42.0], [-72.85, 41.75], [-72.75, 41.5], [-72.97, 40.97], [-73.5, 40.75], [-73.75, 40.85], [-74.0, 40.75], [-74.25, 40.85], [-74.5, 40.75], [-74.75, 40.85], [-75.0, 40.75], [-75.25, 40.85], [-75.5, 40.75], [-75.75, 40.85], [-75.82, 40.82], [-75.97, 40.47], [-76.5, 40.25], [-76.75, 40.35], [-77.0, 40.25], [-77.25, 40.35], [-77.32, 40.32], [-77.47, 39.97], [-78.0, 39.75], [-78.25, 39.85], [-78.32, 39.82], [-78.47, 39.47], [-78.82, 39.32], [-78.97, 38.97], [-79.5, 38.75], [-80.03, 38.97], [-80.18, 39.32], [-80.53, 39.47], [-80.75, 40.0], [-80.65, 40.25], [-80.75, 40.5], [-80.53, 41.03]]]]}, "2020-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.53, 41.03], [-80.18, 41.18], [-80.03, 41.53], [-79.68, 41.68], [-79.65, 41.75], [-79.75, 42.0], [-79.53, 42.53], [-79.18, 42.68], [-79.03, 43.03], [-78.68, 43.18], [-78.53, 43.53], [-78.0, 43.75], [-77.75, 43.65], [-77.5, 43.75], [-77.25, 43.65], [-77.0, 43.75], [-76.47, 43.53], [-76.32, 43.18], [-75.97, 43.03], [-75.82, 42.68], [-75.47, 42.53], [-75.32, 42.18], [-75.25, 42.15], [-75.0, 42.25], [-74.75, 42.15], [-74.5, 42.25], [-74.25, 42.15], [-74.18, 42.18], [-74.03, 42.53], [-73.5, 42.75], [-72.97, 42.53], [-72.75, 42.0], [-72.85, 41.75], [-72.75, 41.5], [-72.97, 40.97], [-73.5, 40.75], [-73.75, 40.85], [-74.0, 40.75], [-74.25, 40.85], [-74.5, 40.75], [-74.75, 40.85], [-75.0, 40.75], [-75.25, 40.85], [-75.5, 40.75], [-75.75, 40.85], [-75.82, 40.82], [-75.97, 40.47], [-76.5, 40.25], [-76.75, 40.35], [-77.0, 40.25], [-77.25, 40.35], [-77.32, 40.32], [-77.47, 39.97], [-78.0, 39.75], [-78.25, 39.85], [-78.32, 39.82], [-78.47, 39.47], [-78.82, 39.32], [-78.97, 38.97], [-79.5, 38.75], [-80.03, 38.97], [-80.18, 39.32], [-80.53, 39.47], [-80.75, 40.0], [-80.65, 40.25], [-80.75, 40.5], [-80.53, 41.03]]]]}, "2020-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.53, 41.03], [-80.18, 41.18], [-80.03, 41.53], [-79.68, 41.68], [-79.65, 41.75], [-79.75, 42.0], [-79.53, 42.53], [-79.18, 42.68], [-79.03, 43.03], [-78.68, 43.18], [-78.53, 43.53], [-78.0, 43.75], [-77.75, 43.65], [-77.5, 43.75], [-77.25, 43.65], [-77.0, 43.75], [-76.47, 43.53], [-76.32, 43.18], [-75.97, 43.03], [-75.82, 42.68], [-75.47, 42.53], [-75.32, 42.18], [-75.25, 42.15], [-75.0, 42.25], [-74.75, 42.15], [-74.5, 42.25], [-74.25, 42.15], [-74.18, 42.18], [-74.03, 42.53], [-73.5, 42.75], [-72.97, 42.53], [-72.75, 42.0], [-72.85, 41.75], [-72.75, 41.5], [-72.97, 40.97], [-73.5, 40.75], [-73.75, 40.85], [-74.0, 40.75], [-74.25, 40.85], [-74.5, 40.75], [-74.75, 40.85], [-75.0, 40.75], [-75.25, 40.85], [-75.5, 40.75], [-75.75, 40.85], [-75.82, 40.82], [-75.97, 40.47], [-76.5, 40.25], [-76.75, 40.35], [-77.0, 40.25], [-77.25, 40.35], [-77.32, 40.32], [-77.47, 39.97], [-78.0, 39.75], [-78.25, 39.85], [-78.32, 39.82], [-78.47, 39.47], [-78.82, 39.32], [-78.97, 38.97], [-79.5, 38.75], [-80.03, 38.97], [-80.18, 39.32], [-80.53, 39.47], [-80.75, 40.0], [-80.65, 40.25], [-80.75, 40.5], [-80.53, 41.03]]]]}, "2020-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.68, 41.68], [-79.65, 41.75], [-79.75, 42.0], [-79.53, 42.53], [-79.18, 42.68], [-79.03, 43.03], [-78.68, 43.18], [-78.53, 43.53], [-78.0, 43.75], [-77.75, 43.65], [-77.5, 43.75], [-77.25, 43.65], [-77.0, 43.75], [-76.47, 43.53], [-76.32, 43.18], [-75.97, 43.03], [-75.82, 42.68], [-75.47, 42.53], [-75.3, 42.12], [-75.0, 42.25], [-74.75, 42.15], [-74.5, 42.25], [-74.25, 42.15], [-74.18, 42.18], [-74.03, 42.53], [-73.5, 42.75], [-72.97, 42.53], [-72.75, 42.0], [-72.85, 41.75], [-72.75, 41.5], [-72.97, 40.97], [-73.5, 40.75], [-73.75, 40.85], [-74.0, 40.75], [-74.25, 40.85], [-74.5, 40.75], [-74.75, 40.85], [-75.0, 40.75], [-75.5, 40.96], [-75.82, 40.82], [-75.97, 40.47], [-76.5, 40.25], [-76.75, 40.35], [-77.0, 40.25], [-77.25, 40.35], [-77.32, 40.32], [-77.47, 39.97], [-78.0, 39.75], [-78.25, 39.85], [-78.32, 39.82], [-78.47, 39.47], [-78.82, 39.32], [-78.97, 38.97], [-79.5, 38.75], [-80.03, 38.97], [-80.25, 39.5], [-80.12, 39.8], [-80.53, 39.97], [-80.75, 40.5], [-80.53, 41.03], [-80.18, 41.18], [-80.03, 41.53], [-79.68, 41.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.213254917834547}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.393580162654802}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.683442921256585, 24.64138490845602, 24.27875096606141, 24.35093117317456, 24.355649199829315]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.683442921256585, 26.404928177886802, 25.655641726965257, 25.989449420665665, 26.675950206121854]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.477627226692448, 4.346892082514158, 4.205566639020322, 4.428016608625937, 4.620092010657979]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.477627226692448, 5.473090998323016, 5.744493727428221, 5.62135512015135, 6.213254917834547]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3476525635939154, 1.7280149645796619, 1.6592348338381842, 1.7223898998458327, 1.7460516277548384]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3476525635939154, 2.1321908459145593, 2.2420265301563154, 2.161624204375428, 2.3185181144928197]}}