{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:39.127905", "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": "2010-May-09_to_2010-May-11_15.5_-25.0"}, "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": 2010050000277}, "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": "May 09 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 11 2010"}, "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": "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": 55718.720305235314}, "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": ["Namibia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa"]}, "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": -25.0}, "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": 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": 16.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, -24.75], [14.25, -24.5], [14.35, -24.25], [14.25, -24.0], [14.35, -23.75], [14.25, -23.5], [14.47, -22.97], [15.0, -22.75], [15.53, -22.97], [15.68, -23.32], [16.03, -23.47], [16.25, -24.0], [16.15, -24.25], [16.25, -24.5], [16.15, -24.75], [16.18, -24.82], [16.53, -24.97], [16.68, -25.32], [17.03, -25.47], [17.25, -26.0], [17.15, -26.25], [17.25, -26.5], [17.15, -26.75], [17.25, -27.0], [17.15, -27.25], [17.25, -27.5], [17.03, -28.03], [16.5, -28.25], [15.97, -28.03], [15.82, -27.68], [15.75, -27.65], [15.5, -27.75], [14.97, -27.53], [14.75, -27.0], [14.85, -26.75], [14.75, -26.5], [14.85, -26.25], [14.82, -26.18], [14.47, -26.03], [14.25, -25.5], [14.35, -25.25], [14.25, -25.0], [14.35, -24.75]]]]}, "2010-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, -24.75], [14.25, -24.5], [14.35, -24.25], [14.25, -24.0], [14.35, -23.75], [14.25, -23.5], [14.47, -22.97], [15.0, -22.75], [15.53, -22.97], [15.68, -23.32], [16.03, -23.47], [16.25, -24.0], [16.15, -24.25], [16.25, -24.5], [16.15, -24.75], [16.18, -24.82], [16.53, -24.97], [16.68, -25.32], [17.03, -25.47], [17.25, -26.0], [17.15, -26.25], [17.25, -26.5], [17.15, -26.75], [17.25, -27.0], [17.15, -27.25], [17.25, -27.5], [17.03, -28.03], [16.5, -28.25], [15.97, -28.03], [15.82, -27.68], [15.75, -27.65], [15.5, -27.75], [14.97, -27.53], [14.75, -27.0], [14.85, -26.75], [14.75, -26.5], [14.85, -26.25], [14.82, -26.18], [14.47, -26.03], [14.25, -25.5], [14.35, -25.25], [14.25, -25.0], [14.35, -24.75]]]]}, "2010-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.35, -24.75], [14.25, -24.5], [14.35, -24.25], [14.25, -24.0], [14.35, -23.75], [14.25, -23.5], [14.47, -22.97], [15.0, -22.75], [15.53, -22.97], [15.68, -23.32], [16.03, -23.47], [16.25, -24.0], [16.15, -24.25], [16.25, -24.5], [16.15, -24.75], [16.18, -24.82], [16.53, -24.97], [16.68, -25.32], [17.03, -25.47], [17.25, -26.0], [17.15, -26.25], [17.25, -26.5], [17.15, -26.75], [17.25, -27.0], [17.15, -27.25], [17.25, -27.5], [17.03, -28.03], [16.5, -28.25], [15.97, -28.03], [15.82, -27.68], [15.75, -27.65], [15.5, -27.75], [14.97, -27.53], [14.75, -27.0], [14.85, -26.75], [14.75, -26.5], [14.85, -26.25], [14.82, -26.18], [14.47, -26.03], [14.25, -25.5], [14.35, -25.25], [14.25, -25.0], [14.35, -24.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.9583808447224555}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.569963262244556}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.809418641188188, 13.555625970074345, 13.644524415884689]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.609910769594478, 10.057503844518067, 11.055397342896924]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.735615173156964, -6.0563401521952045, -5.917934461381501]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.738475422169472, -6.9583808447224555, -6.699643710227576]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5733984004877508, -2.0801374030386652, -1.978455019620705]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0761759254838186, -2.5676173773990345, -2.2939115822658986]}}