{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:43.830886", "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": "2024-Nov-04_to_2024-Nov-08_355.0_10.5"}, "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": 2024110000106}, "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": "November 04 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 08 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 124251.36634598397}, "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": ["Burkina Faso", "C\u00f4te d'Ivoire", "Ghana", "Mali"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "Africa", "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": 10.5}, "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": 355.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "355.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-4.0, 13.75], [-3.75, 13.65], [-3.5, 13.75], [-2.97, 13.53], [-2.82, 13.18], [-2.47, 13.03], [-2.32, 12.68], [-1.97, 12.53], [-1.82, 12.18], [-1.47, 12.03], [-1.25, 11.5], [-1.35, 11.25], [-1.25, 11.0], [-1.47, 10.47], [-1.82, 10.32], [-1.97, 9.97], [-2.5, 9.75], [-2.75, 9.85], [-3.0, 9.75], [-3.53, 9.97], [-3.68, 10.32], [-3.75, 10.35], [-3.82, 10.32], [-3.85, 10.25], [-3.75, 10.0], [-3.97, 9.47], [-4.5, 9.25], [-4.75, 9.35], [-4.82, 9.32], [-4.97, 8.97], [-5.5, 8.75], [-5.75, 8.85], [-6.0, 8.75], [-6.53, 8.97], [-6.68, 9.32], [-7.03, 9.47], [-7.25, 10.0], [-7.15, 10.25], [-7.18, 10.32], [-7.53, 10.47], [-7.68, 10.82], [-8.03, 10.97], [-8.25, 11.5], [-8.03, 12.03], [-7.5, 12.25], [-7.0, 12.04], [-6.5, 12.25], [-5.97, 12.03], [-5.75, 11.5], [-5.85, 11.25], [-5.82, 11.18], [-5.75, 11.15], [-5.5, 11.25], [-5.25, 11.15], [-5.12, 11.2], [-5.25, 11.5], [-5.15, 11.75], [-5.18, 11.82], [-5.53, 11.97], [-5.75, 12.5], [-5.65, 12.75], [-5.68, 12.82], [-6.03, 12.97], [-6.25, 13.5], [-6.03, 14.03], [-5.5, 14.25], [-4.97, 14.03], [-4.82, 13.68], [-4.5, 13.54], [-4.0, 13.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.529999999999973, 11.03], [-5.0, 11.25], [-4.470000000000027, 11.03], [-4.25, 10.5], [-4.470000000000027, 9.97], [-5.0, 9.75], [-5.529999999999973, 9.97], [-5.75, 10.5], [-5.529999999999973, 11.03]]]]}, "2024-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.529999999999973, 10.47], [-7.75, 11.0], [-7.529999999999973, 11.53], [-7.0, 11.75], [-6.75, 11.65], [-6.5, 11.75], [-5.970000000000027, 11.53], [-5.819999999999993, 11.18], [-5.75, 11.15], [-5.5, 11.25], [-5.25, 11.15], [-5.0, 11.25], [-4.75, 11.15], [-4.680000000000007, 11.18], [-4.649999999999977, 11.25], [-4.75, 11.5], [-4.649999999999977, 11.75], [-4.75, 12.0], [-4.649999999999977, 12.25], [-4.75, 12.5], [-4.649999999999977, 12.75], [-4.75, 13.0], [-4.529999999999973, 13.53], [-4.0, 13.75], [-3.75, 13.65], [-3.5, 13.75], [-2.9700000000000273, 13.53], [-2.75, 13.0], [-2.8500000000000227, 12.75], [-2.819999999999993, 12.68], [-2.4700000000000273, 12.53], [-2.3000000000000114, 12.12], [-2.0, 12.25], [-1.4700000000000273, 12.03], [-1.25, 11.5], [-1.3500000000000227, 11.25], [-1.25, 11.0], [-1.4700000000000273, 10.47], [-1.8199999999999932, 10.32], [-1.9700000000000273, 9.97], [-2.5, 9.75], [-2.75, 9.85], [-3.0, 9.75], [-3.5299999999999727, 9.97], [-3.680000000000007, 10.32], [-3.75, 10.35], [-3.819999999999993, 10.32], [-3.8500000000000227, 10.25], [-3.75, 10.0], [-3.9700000000000273, 9.47], [-4.5, 9.25], [-4.75, 9.35], [-4.819999999999993, 9.32], [-4.970000000000027, 8.97], [-5.5, 8.75], [-5.75, 8.85], [-6.0, 8.75], [-6.529999999999973, 8.97], [-6.680000000000007, 9.32], [-7.029999999999973, 9.47], [-7.25, 10.0], [-7.149999999999977, 10.25], [-7.180000000000007, 10.32], [-7.529999999999973, 10.47]]]]}, "2024-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.029999999999973, 10.97], [-8.25, 11.5], [-8.029999999999973, 12.03], [-7.5, 12.25], [-7.0, 12.04], [-6.5, 12.25], [-5.970000000000027, 12.03], [-5.75, 11.5], [-5.850000000000023, 11.25], [-5.819999999999993, 11.18], [-5.75, 11.15], [-5.5, 11.25], [-5.25, 11.15], [-5.1200000000000045, 11.2], [-5.25, 11.5], [-5.149999999999977, 11.75], [-5.180000000000007, 11.82], [-5.529999999999973, 11.97], [-5.75, 12.5], [-5.649999999999977, 12.75], [-5.680000000000007, 12.82], [-6.029999999999973, 12.97], [-6.25, 13.5], [-6.029999999999973, 14.03], [-5.5, 14.25], [-4.970000000000027, 14.03], [-4.819999999999993, 13.68], [-4.5, 13.54], [-4.0, 13.75], [-3.75, 13.65], [-3.5, 13.75], [-2.9700000000000273, 13.53], [-2.819999999999993, 13.18], [-2.4700000000000273, 13.03], [-2.319999999999993, 12.68], [-1.9700000000000273, 12.53], [-1.8199999999999932, 12.18], [-1.4700000000000273, 12.03], [-1.25, 11.5], [-1.3500000000000227, 11.25], [-1.25, 11.0], [-1.4700000000000273, 10.47], [-1.8199999999999932, 10.32], [-1.9700000000000273, 9.97], [-2.5, 9.75], [-2.75, 9.85], [-3.0, 9.75], [-3.5299999999999727, 9.97], [-3.680000000000007, 10.32], [-3.75, 10.35], [-3.819999999999993, 10.32], [-3.8500000000000227, 10.25], [-3.75, 10.0], [-3.9700000000000273, 9.47], [-4.5, 9.25], [-4.75, 9.35], [-4.819999999999993, 9.32], [-4.970000000000027, 8.97], [-5.5, 8.75], [-5.75, 8.85], [-6.0, 8.75], [-6.529999999999973, 8.97], [-6.680000000000007, 9.32], [-7.029999999999973, 9.47], [-7.25, 10.0], [-7.149999999999977, 10.25], [-7.180000000000007, 10.32], [-7.529999999999973, 10.47], [-7.680000000000007, 10.82], [-8.029999999999973, 10.97]]]]}, "2024-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.029999999999973, 10.97], [-8.25, 11.5], [-8.029999999999973, 12.03], [-7.5, 12.25], [-7.0, 12.04], [-6.5, 12.25], [-5.970000000000027, 12.03], [-5.75, 11.5], [-5.850000000000023, 11.25], [-5.819999999999993, 11.18], [-5.75, 11.15], [-5.5, 11.25], [-5.25, 11.15], [-5.1200000000000045, 11.2], [-5.25, 11.5], [-5.149999999999977, 11.75], [-5.180000000000007, 11.82], [-5.529999999999973, 11.97], [-5.75, 12.5], [-5.649999999999977, 12.75], [-5.680000000000007, 12.82], [-6.029999999999973, 12.97], [-6.25, 13.5], [-6.029999999999973, 14.03], [-5.5, 14.25], [-4.970000000000027, 14.03], [-4.819999999999993, 13.68], [-4.5, 13.54], [-4.0, 13.75], [-3.75, 13.65], [-3.5, 13.75], [-2.9700000000000273, 13.53], [-2.819999999999993, 13.18], [-2.4700000000000273, 13.03], [-2.319999999999993, 12.68], [-1.9700000000000273, 12.53], [-1.8199999999999932, 12.18], [-1.4700000000000273, 12.03], [-1.25, 11.5], [-1.3500000000000227, 11.25], [-1.25, 11.0], [-1.4700000000000273, 10.47], [-1.8199999999999932, 10.32], [-1.9700000000000273, 9.97], [-2.5, 9.75], [-2.75, 9.85], [-3.0, 9.75], [-3.5299999999999727, 9.97], [-3.680000000000007, 10.32], [-3.75, 10.35], [-3.819999999999993, 10.32], [-3.8500000000000227, 10.25], [-3.75, 10.0], [-3.9700000000000273, 9.47], [-4.5, 9.25], [-4.75, 9.35], [-4.819999999999993, 9.32], [-4.970000000000027, 8.97], [-5.5, 8.75], [-5.75, 8.85], [-6.0, 8.75], [-6.529999999999973, 8.97], [-6.680000000000007, 9.32], [-7.029999999999973, 9.47], [-7.25, 10.0], [-7.149999999999977, 10.25], [-7.180000000000007, 10.32], [-7.529999999999973, 10.47], [-7.680000000000007, 10.82], [-8.029999999999973, 10.97]]]]}, "2024-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.029999999999973, 10.97], [-8.25, 11.5], [-8.029999999999973, 12.03], [-7.5, 12.25], [-7.0, 12.04], [-6.5, 12.25], [-5.970000000000027, 12.03], [-5.75, 11.5], [-5.850000000000023, 11.25], [-5.819999999999993, 11.18], [-5.75, 11.15], [-5.5, 11.25], [-5.25, 11.15], [-5.1200000000000045, 11.2], [-5.25, 11.5], [-5.149999999999977, 11.75], [-5.180000000000007, 11.82], [-5.529999999999973, 11.97], [-5.75, 12.5], [-5.649999999999977, 12.75], [-5.680000000000007, 12.82], [-6.029999999999973, 12.97], [-6.25, 13.5], [-6.029999999999973, 14.03], [-5.5, 14.25], [-4.970000000000027, 14.03], [-4.819999999999993, 13.68], [-4.5, 13.54], [-4.0, 13.75], [-3.75, 13.65], [-3.5, 13.75], [-2.9700000000000273, 13.53], [-2.819999999999993, 13.18], [-2.4700000000000273, 13.03], [-2.319999999999993, 12.68], [-1.9700000000000273, 12.53], [-1.75, 12.0], [-1.8500000000000227, 11.75], [-1.75, 11.5], [-1.8500000000000227, 11.25], [-1.75, 11.0], [-1.9700000000000273, 10.47], [-2.5, 10.25], [-3.0, 10.46], [-3.5, 10.25], [-3.75, 10.35], [-3.819999999999993, 10.32], [-3.8500000000000227, 10.25], [-3.75, 10.0], [-3.9700000000000273, 9.47], [-4.5, 9.25], [-4.75, 9.35], [-4.819999999999993, 9.32], [-4.970000000000027, 8.97], [-5.5, 8.75], [-6.029999999999973, 8.97], [-6.180000000000007, 9.32], [-6.25, 9.35], [-6.5, 9.25], [-7.029999999999973, 9.47], [-7.25, 10.0], [-7.149999999999977, 10.25], [-7.180000000000007, 10.32], [-7.529999999999973, 10.47], [-7.680000000000007, 10.82], [-8.029999999999973, 10.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.002090329282453}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.967459962555877}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.624525960286462, 26.335028789889463, 25.957961360032016, 25.76071496358736, 26.092762756347668]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.624525960286462, 25.20176213582357, 24.793759918212913, 24.41617101033529, 25.03436431884768]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3635440493137025, -1.6789320219713644, -2.042952932691167, -2.2163476231880765, -1.8602792828385906]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3635440493137025, -2.313666118034348, -2.8687894170327013, -3.002090329282453, -2.5751084634975996]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3497063413460828, -1.569147822622286, -1.8020979805110413, -1.9258372884218924, -1.562289552251198]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3497063413460828, -2.04700680614988, -2.6234137362690984, -2.6094141061631615, -2.0847573319100956]}}