{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:00.141258", "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-Oct-20_to_2021-Oct-22_289.5_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": 2021100002042}, "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": "October 20 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 22 2021"}, "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": 141131.44978095734}, "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": 289.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "289.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 284.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.75}, "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": 42.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.0, 41.75], [-74.75, 41.65], [-74.68, 41.68], [-74.65, 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39.75], [-76.03, 39.97], [-76.25, 40.5], [-76.03, 41.03], [-75.68, 41.18], [-75.53, 41.53], [-75.0, 41.75]], [[-72.18, 41.68], [-72.07, 41.93], [-72.32, 41.82], [-72.35, 41.75], [-72.32, 41.68], [-72.25, 41.65], [-72.18, 41.68]]]]}, "2021-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.0, 41.75], [-74.75, 41.65], [-74.68, 41.68], [-74.65, 41.75], [-74.75, 42.0], [-74.53, 42.53], [-74.0, 42.75], [-73.7, 42.62], [-73.53, 43.03], [-73.0, 43.25], [-72.75, 43.15], [-72.5, 43.25], [-71.97, 43.03], [-71.75, 42.5], [-71.93, 42.07], [-71.5, 42.25], [-71.25, 42.15], [-71.0, 42.25], [-70.75, 42.15], [-70.5, 42.25], [-70.25, 42.15], [-70.0, 42.25], [-69.75, 42.15], [-69.5, 42.25], [-68.97, 42.03], [-68.75, 41.5], [-68.85, 41.25], [-68.75, 41.0], [-68.97, 40.47], [-69.32, 40.32], [-69.35, 40.25], [-69.25, 40.0], [-69.47, 39.47], [-69.82, 39.32], [-69.97, 38.97], [-70.5, 38.75], [-70.75, 38.85], [-71.0, 38.75], [-71.25, 38.85], [-71.5, 38.75], [-71.75, 38.85], [-72.0, 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anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.4151851619095055}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.647025424568889}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.09698360961147, 18.77651680269713, 18.777155940852026]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.44266458664572, 21.576312344987116, 21.89892015393366]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.048813334724275, 4.853160263111147, 5.039102675871247]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.973974509396783, 7.4151851619095055, 6.66477736702268]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4743952208544553, 1.7616258104099825, 1.8441538147532825]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.664314562482882, 2.093845632438848, 2.413878644333871]}}