{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:45.527784", "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-08_to_2018-Aug-10_344.5_12.5"}, "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": 2018080000416}, "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 08 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 10 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": 84573.16929994634}, "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": ["Gambia", "Guinea", "Guinea-Bissau", "Senegal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-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": 12.5}, "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": 344.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "344.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 343.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 348.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.15, 13.25], [-17.25, 13.5], [-17.03, 14.03], [-16.5, 14.25], [-16.25, 14.15], [-16.0, 14.25], [-15.75, 14.15], [-15.5, 14.25], [-15.25, 14.15], [-15.0, 14.25], [-14.75, 14.15], [-14.5, 14.25], [-13.97, 14.03], [-13.75, 13.5], [-13.85, 13.25], [-13.75, 13.0], [-13.85, 12.75], [-13.82, 12.68], [-13.47, 12.53], [-13.25, 12.0], [-13.35, 11.75], [-13.32, 11.68], [-13.25, 11.65], [-13.0, 11.75], [-12.75, 11.65], [-12.5, 11.75], [-11.97, 11.53], [-11.82, 11.18], [-11.47, 11.03], [-11.25, 10.5], [-11.47, 9.97], [-12.0, 9.75], [-12.25, 9.85], [-12.5, 9.75], [-12.75, 9.85], [-13.0, 9.75], [-13.53, 9.97], [-13.68, 10.32], [-14.03, 10.47], [-14.18, 10.82], [-14.5, 10.96], [-15.0, 10.75], [-15.53, 10.97], [-15.68, 11.32], [-15.75, 11.35], [-16.0, 11.25], [-16.53, 11.47], [-16.68, 11.82], [-17.03, 11.97], [-17.25, 12.5], [-17.15, 12.75], [-17.25, 13.0], [-17.15, 13.25]]]]}, "2018-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.15, 13.25], [-17.25, 13.5], [-17.03, 14.03], [-16.5, 14.25], [-16.25, 14.15], [-16.0, 14.25], [-15.75, 14.15], [-15.5, 14.25], [-15.25, 14.15], [-15.0, 14.25], [-14.75, 14.15], [-14.5, 14.25], [-13.97, 14.03], [-13.75, 13.5], [-13.85, 13.25], [-13.75, 13.0], [-13.85, 12.75], [-13.82, 12.68], [-13.47, 12.53], [-13.25, 12.0], [-13.35, 11.75], [-13.32, 11.68], [-13.25, 11.65], [-13.0, 11.75], [-12.75, 11.65], [-12.5, 11.75], [-11.97, 11.53], [-11.82, 11.18], [-11.47, 11.03], [-11.25, 10.5], [-11.47, 9.97], [-12.0, 9.75], [-12.25, 9.85], [-12.5, 9.75], [-12.75, 9.85], [-13.0, 9.75], [-13.53, 9.97], [-13.68, 10.32], [-14.03, 10.47], [-14.18, 10.82], [-14.5, 10.96], [-15.0, 10.75], [-15.53, 10.97], [-15.68, 11.32], [-15.75, 11.35], [-16.0, 11.25], [-16.53, 11.47], [-16.68, 11.82], [-17.03, 11.97], [-17.25, 12.5], [-17.15, 12.75], [-17.25, 13.0], [-17.15, 13.25]]]]}, "2018-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.15, 13.25], [-17.25, 13.5], [-17.03, 14.03], [-16.5, 14.25], [-16.25, 14.15], [-16.0, 14.25], [-15.75, 14.15], [-15.5, 14.25], [-15.25, 14.15], [-15.0, 14.25], [-14.75, 14.15], [-14.5, 14.25], [-13.97, 14.03], [-13.75, 13.5], [-13.85, 13.25], [-13.75, 13.0], [-13.85, 12.75], [-13.82, 12.68], [-13.47, 12.53], [-13.25, 12.0], [-13.35, 11.75], [-13.32, 11.68], [-13.25, 11.65], [-13.0, 11.75], [-12.75, 11.65], [-12.5, 11.75], [-11.97, 11.53], [-11.82, 11.18], [-11.47, 11.03], [-11.25, 10.5], [-11.47, 9.97], [-12.0, 9.75], [-12.25, 9.85], [-12.5, 9.75], [-12.75, 9.85], [-13.0, 9.75], [-13.53, 9.97], [-13.68, 10.32], [-14.03, 10.47], [-14.18, 10.82], [-14.5, 10.96], [-15.0, 10.75], [-15.53, 10.97], [-15.68, 11.32], [-15.75, 11.35], [-16.0, 11.25], [-16.53, 11.47], [-16.68, 11.82], [-17.03, 11.97], [-17.25, 12.5], [-17.15, 12.75], [-17.25, 13.0], [-17.15, 13.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3163861789121825}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6188662605021928}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.42276135829161, 24.368573896562395, 24.496903436365812]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.855881484213057, 20.084557956256333, 19.95477308422022]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6402611039516077, -1.679929251465749, -1.5364084260892221]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.0317253417107963, -2.3163861789121825, -2.1940883124039487]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.002525079689566, -2.083615170815906, -1.8991341970469156]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3573065044862003, -2.8218217133574415, -2.4856962098708784]}}