{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:07.537551", "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": "2013-Aug-09_to_2013-Aug-14_345.0_12.0"}, "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": 2013080000507}, "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 09 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 14 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 63339.813158618825}, "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": ["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": 12.0}, "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": 345.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "345.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 341.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 345.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.75}, "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": {"2013-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.5, 12.25], [-13.97, 12.03], [-13.75, 11.5], [-13.97, 10.97], [-14.32, 10.82], [-14.47, 10.47], [-15.0, 10.25], [-15.53, 10.47], [-15.75, 11.0], [-15.53, 11.53], [-15.18, 11.68], [-15.03, 12.03], [-14.5, 12.25]]]]}, "2013-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.25, 11.5], [-16.03, 12.03], [-15.68, 12.18], [-15.53, 12.53], [-15.0, 12.75], [-14.47, 12.53], [-14.32, 12.18], [-13.97, 12.03], [-13.75, 11.5], [-13.97, 10.97], [-14.32, 10.82], [-14.47, 10.47], [-15.0, 10.25], [-15.53, 10.47], [-15.68, 10.82], [-16.03, 10.97], [-16.25, 11.5]]]]}, "2013-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-18.53, 12.47], [-18.75, 13.0], [-18.53, 13.53], [-18.0, 13.75], [-17.75, 13.65], [-17.68, 13.68], [-17.53, 14.03], [-17.0, 14.25], [-16.75, 14.15], [-16.5, 14.25], [-16.25, 14.15], [-16.0, 14.25], [-15.47, 14.03], [-15.32, 13.68], [-14.97, 13.53], [-14.82, 13.18], [-14.47, 13.03], [-14.25, 12.5], [-14.35, 12.25], [-14.32, 12.18], [-13.97, 12.03], [-13.75, 11.5], [-13.97, 10.97], [-14.32, 10.82], [-14.47, 10.47], [-15.0, 10.25], [-15.53, 10.47], [-15.68, 10.82], [-16.03, 10.97], [-16.18, 11.32], [-16.53, 11.47], [-16.68, 11.82], [-17.03, 11.97], [-17.18, 12.32], [-17.25, 12.35], [-17.5, 12.25], [-17.75, 12.35], [-18.0, 12.25], [-18.53, 12.47]]]]}, "2013-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-18.53, 12.47], [-18.75, 13.0], [-18.53, 13.53], [-18.0, 13.75], [-17.75, 13.65], [-17.68, 13.68], [-17.53, 14.03], [-17.0, 14.25], [-16.75, 14.15], [-16.5, 14.25], [-16.25, 14.15], [-16.0, 14.25], [-15.75, 14.15], [-15.5, 14.25], [-14.97, 14.03], [-14.82, 13.68], [-14.47, 13.53], [-14.25, 13.0], [-14.35, 12.75], [-14.25, 12.5], [-14.35, 12.25], [-14.25, 12.0], [-14.47, 11.47], [-14.82, 11.32], [-14.97, 10.97], [-15.5, 10.75], [-16.03, 10.97], [-16.18, 11.32], [-16.53, 11.47], [-16.68, 11.82], [-17.03, 11.97], [-17.18, 12.32], [-17.25, 12.35], [-17.5, 12.25], [-17.75, 12.35], [-18.0, 12.25], [-18.53, 12.47]]]]}, "2013-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-18.53, 12.47], [-18.75, 13.0], [-18.53, 13.53], [-18.0, 13.75], [-17.75, 13.65], [-17.68, 13.68], [-17.53, 14.03], [-17.0, 14.25], [-16.75, 14.15], [-16.5, 14.25], [-16.25, 14.15], [-16.0, 14.25], [-15.75, 14.15], [-15.5, 14.25], [-14.97, 14.03], [-14.82, 13.68], [-14.47, 13.53], [-14.25, 13.0], [-14.35, 12.75], [-14.25, 12.5], [-14.35, 12.25], [-14.25, 12.0], [-14.47, 11.47], [-14.82, 11.32], [-14.97, 10.97], [-15.5, 10.75], [-16.03, 10.97], [-16.18, 11.32], [-16.53, 11.47], [-16.68, 11.82], [-17.03, 11.97], [-17.18, 12.32], [-17.25, 12.35], [-17.5, 12.25], [-17.75, 12.35], [-18.0, 12.25], [-18.53, 12.47]]]]}, "2013-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-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], [-14.97, 14.03], [-14.82, 13.68], [-14.47, 13.53], [-14.25, 13.0], [-14.35, 12.75], [-14.25, 12.5], [-14.35, 12.25], [-14.25, 12.0], [-14.47, 11.47], [-14.82, 11.32], [-14.97, 10.97], [-15.5, 10.75], [-16.03, 10.97], [-16.18, 11.32], [-16.53, 11.47], [-16.75, 12.0], [-16.65, 12.25], [-16.75, 12.5], [-16.65, 12.75], [-16.68, 12.82], [-17.03, 12.97], [-17.25, 13.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.130731312426292}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.381556129625299}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.90689027313681, 25.139352596716606, 25.32931852105611, 25.530264391801666, 25.246459722191844, 25.375258993641523]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.641617705457406, 24.647937627397766, 24.43388105050792, 24.96114310953402, 24.669113469743422, 24.696116772579558]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0099450490805566, -1.0209474935104481, -1.4193308549688781, -1.3069754198283057, -1.5487098811145996, -1.3591752936150714]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2373966361348039, -1.2051110644375171, -2.0310630240470005, -1.7966418715722057, -2.130731312426292, -1.6757387600345623]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4513240375099707, -1.532366611538143, -1.9006325540595654, -1.697287507269179, -2.02811130502584, -1.6892185833384183]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5357825825935503, -1.7425245414060846, -2.4041263726814406, -2.178029196090179, -2.6607913926612996, -2.107373377220461]}}