{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:03.395334", "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": "2021-Aug-09_to_2021-Aug-12_266.0_41.5"}, "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": 2021080001896}, "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 09 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 12 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 54264.12166968892}, "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": ["C.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": 41.5}, "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": 266.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "266.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 263.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 268.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-94.0, 42.25], [-93.47, 42.03], [-93.25, 41.5], [-93.47, 40.97], [-94.0, 40.75], [-94.53, 40.97], [-94.75, 41.5], [-94.53, 42.03], [-94.0, 42.25]]]]}, "2021-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.65, 39.25], [-96.75, 39.5], [-96.65, 39.75], [-96.75, 40.0], [-96.53, 40.53], [-96.18, 40.68], [-96.03, 41.03], [-95.5, 41.25], [-95.25, 41.15], [-95.0, 41.25], [-94.75, 41.15], [-94.68, 41.18], [-94.65, 41.25], [-94.75, 41.5], [-94.53, 42.03], [-94.0, 42.25], [-93.75, 42.15], [-93.5, 42.25], [-93.25, 42.15], [-93.0, 42.25], [-92.75, 42.15], [-92.5, 42.25], [-92.25, 42.15], [-92.0, 42.25], [-91.47, 42.03], [-91.25, 41.5], [-91.47, 40.97], [-92.0, 40.75], [-92.25, 40.85], [-92.5, 40.75], [-92.75, 40.85], [-92.82, 40.82], [-92.96, 40.5], [-92.75, 40.0], [-92.97, 39.47], [-93.32, 39.32], [-93.47, 38.97], [-94.0, 38.75], [-94.25, 38.85], [-94.5, 38.75], [-94.8, 38.88], [-94.97, 38.47], [-95.32, 38.32], [-95.47, 37.97], [-96.0, 37.75], [-96.53, 37.97], [-96.75, 38.5], [-96.65, 38.75], [-96.75, 39.0], [-96.65, 39.25]]]]}, "2021-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.65, 39.25], [-96.75, 39.5], [-96.65, 39.75], [-96.75, 40.0], [-96.53, 40.53], [-96.18, 40.68], [-96.03, 41.03], [-95.5, 41.25], [-95.25, 41.15], [-95.0, 41.25], [-94.75, 41.15], [-94.68, 41.18], [-94.65, 41.25], [-94.75, 41.5], [-94.53, 42.03], [-94.0, 42.25], [-93.75, 42.15], [-93.5, 42.25], [-93.25, 42.15], [-93.0, 42.25], [-92.75, 42.15], [-92.5, 42.25], [-92.25, 42.15], [-92.0, 42.25], [-91.47, 42.03], [-91.25, 41.5], [-91.47, 40.97], [-92.0, 40.75], [-92.25, 40.85], [-92.5, 40.75], [-92.75, 40.85], [-92.82, 40.82], [-92.96, 40.5], [-92.75, 40.0], [-92.97, 39.47], [-93.32, 39.32], [-93.47, 38.97], [-94.0, 38.75], [-94.25, 38.85], [-94.5, 38.75], [-94.8, 38.88], [-94.97, 38.47], [-95.32, 38.32], [-95.47, 37.97], [-96.0, 37.75], [-96.53, 37.97], [-96.75, 38.5], [-96.65, 38.75], [-96.75, 39.0], [-96.65, 39.25]]]]}, "2021-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.65, 39.25], [-96.75, 39.5], [-96.65, 39.75], [-96.75, 40.0], [-96.53, 40.53], [-96.18, 40.68], [-96.03, 41.03], [-95.5, 41.25], [-95.25, 41.15], [-95.0, 41.25], [-94.75, 41.15], [-94.68, 41.18], [-94.65, 41.25], [-94.75, 41.5], [-94.53, 42.03], [-94.0, 42.25], [-93.75, 42.15], [-93.5, 42.25], [-93.25, 42.15], [-93.0, 42.25], [-92.75, 42.15], [-92.5, 42.25], [-92.25, 42.15], [-92.0, 42.25], [-91.47, 42.03], [-91.25, 41.5], [-91.47, 40.97], [-92.0, 40.75], [-92.25, 40.85], [-92.5, 40.75], [-92.75, 40.85], [-92.82, 40.82], [-92.96, 40.5], [-92.75, 40.0], [-92.97, 39.47], [-93.32, 39.32], [-93.47, 38.97], [-94.0, 38.75], [-94.25, 38.85], [-94.5, 38.75], [-94.8, 38.88], [-94.97, 38.47], [-95.32, 38.32], [-95.47, 37.97], [-96.0, 37.75], [-96.53, 37.97], [-96.75, 38.5], [-96.65, 38.75], [-96.75, 39.0], [-96.65, 39.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.402205643681043}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.166171262934671}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.144377082758467, 29.014693817238765, 29.95229046376386, 28.867503140346628]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.144377082758467, 29.8867177946056, 31.082246823977584, 31.276088287987875]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.018115907618551, 4.827469938336974, 5.856309292232551, 4.864650008465624]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.018115907618551, 5.838614798546303, 6.402205643681043, 6.077766076465764]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean 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