{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:47.965058", "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": "2018-Aug-26_to_2018-Aug-28_17.5_-23.0"}, "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": 2018080000989}, "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 26 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 28 2018"}, "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": 78974.16568586843}, "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": ["Botswana", "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": -23.0}, "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": 17.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 20.25}, "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": -22.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.97, -23.47], [16.32, -23.32], [16.35, -23.25], [16.25, -23.0], [16.47, -22.47], [17.0, -22.25], [17.25, -22.35], [17.5, -22.25], [17.75, -22.35], [18.0, -22.25], [18.53, -22.47], [18.68, -22.82], [18.75, -22.85], [19.0, -22.75], [19.53, -22.97], [19.68, -23.32], [19.75, -23.35], [20.0, -23.25], [20.53, -23.47], [20.75, -24.0], [20.53, -24.53], [20.13, -24.7], [20.25, -25.0], [20.03, -25.53], [19.68, -25.68], [19.53, -26.03], [19.0, -26.25], [18.47, -26.03], [18.32, -25.68], [18.25, -25.65], [18.0, -25.75], [17.75, -25.65], [17.5, -25.75], [16.97, -25.53], [16.82, -25.18], [16.75, -25.15], [16.5, -25.25], [15.97, -25.03], [15.75, -24.5], [15.85, -24.25], [15.75, -24.0], [15.97, -23.47]]]]}, "2018-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.97, -23.47], [16.32, -23.32], [16.35, -23.25], [16.25, -23.0], [16.47, -22.47], [17.0, -22.25], [17.25, -22.35], [17.5, -22.25], [17.75, -22.35], [18.0, -22.25], [18.53, -22.47], [18.68, -22.82], [18.75, -22.85], [19.0, -22.75], [19.53, -22.97], [19.68, -23.32], [19.75, -23.35], [20.0, -23.25], [20.53, -23.47], [20.75, -24.0], [20.53, -24.53], [20.13, -24.7], [20.25, -25.0], [20.03, -25.53], [19.68, -25.68], [19.53, -26.03], [19.0, -26.25], [18.47, -26.03], [18.32, -25.68], [18.25, -25.65], [18.0, -25.75], [17.75, -25.65], [17.5, -25.75], [16.97, -25.53], [16.82, -25.18], [16.75, -25.15], [16.5, -25.25], [15.97, -25.03], [15.75, -24.5], [15.85, -24.25], [15.75, -24.0], [15.97, -23.47]]]]}, "2018-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.97, -23.47], [16.32, -23.32], [16.35, -23.25], [16.25, -23.0], [16.47, -22.47], [17.0, -22.25], [17.25, -22.35], [17.5, -22.25], [17.75, -22.35], [18.0, -22.25], [18.53, -22.47], [18.68, -22.82], [18.75, -22.85], [19.0, -22.75], [19.53, -22.97], [19.68, -23.32], [19.75, -23.35], [20.0, -23.25], [20.53, -23.47], [20.75, -24.0], [20.53, -24.53], [20.13, -24.7], [20.25, -25.0], [20.03, -25.53], [19.68, -25.68], [19.53, -26.03], [19.0, -26.25], [18.47, -26.03], [18.32, -25.68], [18.25, -25.65], [18.0, -25.75], [17.75, -25.65], [17.5, -25.75], [16.97, -25.53], [16.82, -25.18], [16.75, -25.15], [16.5, -25.25], [15.97, -25.03], [15.75, -24.5], [15.85, -24.25], [15.75, -24.0], [15.97, -23.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.968377827538234}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.5386258349738835}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.000991977545539, 10.311877778022165, 11.31867188381375]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.617633614536203, 8.77985663584434, 10.357981046678333]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.523683124648394, -7.471162598033932, -6.621031782239326]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.5168933609840565, -8.968377827538234, -7.819027202091547]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6408598517449164, -2.17786760096168, -1.9450292710959658]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8653614788846682, -2.4121683771108167, -2.418300662060964]}}