{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:05.611532", "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": "2011-Aug-02_to_2011-Aug-05_15.5_28.5"}, "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": 2011080000241}, "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 02 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 05 2011"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 125568.99313766358}, "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": ["Libya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 28.5}, "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": 15.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "15.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, 29.75], [14.25, 30.0], [14.35, 30.25], [14.25, 30.5], [14.47, 31.03], [15.0, 31.25], [15.25, 31.15], [15.5, 31.25], [16.03, 31.03], [16.25, 30.5], [16.15, 30.25], [16.18, 30.18], [16.25, 30.15], [16.5, 30.25], [17.03, 30.03], [17.25, 29.5], [17.03, 28.97], [16.68, 28.82], [16.53, 28.47], [16.18, 28.32], [16.03, 27.97], [15.5, 27.75], [14.97, 27.97], [14.82, 28.32], [14.47, 28.47], [14.25, 29.0], [14.35, 29.25], [14.25, 29.5], [14.35, 29.75]]]]}, "2011-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, 29.75], [14.25, 30.0], [14.35, 30.25], [14.25, 30.5], [14.47, 31.03], [15.0, 31.25], [15.25, 31.15], [15.5, 31.25], [16.03, 31.03], [16.25, 30.5], [16.15, 30.25], [16.18, 30.18], [16.25, 30.15], [16.5, 30.25], [17.03, 30.03], [17.18, 29.68], [17.53, 29.53], [17.68, 29.18], [18.03, 29.03], [18.25, 28.5], [18.15, 28.25], [18.18, 28.18], [18.25, 28.15], [18.5, 28.25], [19.03, 28.03], [19.25, 27.5], [19.15, 27.25], [19.18, 27.18], [19.53, 27.03], [19.75, 26.5], [19.53, 25.97], [19.0, 25.75], [18.75, 25.85], [18.68, 25.82], [18.53, 25.47], [18.0, 25.25], [17.47, 25.47], [17.32, 25.82], [17.25, 25.85], [17.0, 25.75], [16.75, 25.85], [16.5, 25.75], [16.25, 25.85], [16.0, 25.75], [15.75, 25.85], [15.5, 25.75], [14.97, 25.97], [14.75, 26.5], [14.85, 26.75], [14.75, 27.0], [14.85, 27.25], [14.75, 27.5], [14.85, 27.75], [14.75, 28.0], [14.85, 28.25], [14.82, 28.32], [14.47, 28.47], [14.25, 29.0], [14.35, 29.25], [14.25, 29.5], [14.35, 29.75]]]]}, "2011-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, 29.75], [14.25, 30.0], [14.35, 30.25], [14.25, 30.5], [14.47, 31.03], [15.0, 31.25], [15.25, 31.15], [15.5, 31.25], [16.03, 31.03], [16.25, 30.5], [16.15, 30.25], [16.18, 30.18], [16.25, 30.15], [16.5, 30.25], [17.03, 30.03], [17.18, 29.68], [17.53, 29.53], [17.68, 29.18], [18.03, 29.03], [18.25, 28.5], [18.15, 28.25], [18.18, 28.18], [18.25, 28.15], [18.5, 28.25], [19.03, 28.03], [19.25, 27.5], [19.15, 27.25], [19.18, 27.18], [19.53, 27.03], [19.75, 26.5], [19.53, 25.97], 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25.61730581872689]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3978423918334024, -2.9014294663023588, -3.6283416627808265, -2.9066246952613017]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9188534558816173, -3.6955061571412102, -4.378872705444508, -3.333814559216421]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.1601866315499874, -1.4225897164522967, -1.7096775466355545, -1.335443886270218]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3165346887148472, -1.6404449806021753, -1.9970990182133916, -1.5864174300723104]}}