{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:36.919866", "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-05_to_2024-Nov-08_354.5_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": 2024110000116}, "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 05 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": 4}, "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": 103139.3103730515}, "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"]}, "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": 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": 354.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "354.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.03, 11.53], [-6.5, 11.75], [-5.97, 11.53], [-5.82, 11.18], [-5.75, 11.15], [-5.5, 11.25], [-5.25, 11.15], [-5.0, 11.25], [-4.75, 11.15], [-4.62, 11.2], [-4.75, 11.5], [-4.65, 11.75], [-4.75, 12.0], [-4.65, 12.25], [-4.75, 12.5], [-4.53, 13.03], [-4.0, 13.25], [-3.47, 13.03], [-3.32, 12.68], [-3.25, 12.65], [-3.0, 12.75], [-2.47, 12.53], [-2.3, 12.12], [-2.0, 12.25], [-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], [-3.03, 9.97], [-3.18, 10.32], [-3.25, 10.35], [-3.5, 10.25], [-3.8, 10.38], [-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], [-6.03, 8.97], [-6.18, 9.32], [-6.53, 9.47], [-6.68, 9.82], [-7.03, 9.97], [-7.25, 10.5], [-7.15, 10.75], [-7.25, 11.0], [-7.03, 11.53]]]]}, "2024-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-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], [-5.53, 13.03], [-5.0, 13.25], [-4.5, 13.04], [-4.0, 13.25], [-3.5, 13.04], [-3.0, 13.25], [-2.47, 13.03], [-2.25, 12.5], [-2.35, 12.25], [-2.32, 12.18], [-2.25, 12.15], [-2.0, 12.25], [-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], [-3.03, 9.97], [-3.18, 10.32], [-3.25, 10.35], [-3.5, 10.25], [-3.75, 10.35], [-3.82, 10.32], [-3.85, 10.25], [-3.75, 10.0], [-3.85, 9.75], [-3.75, 9.5], [-3.97, 8.97], [-4.5, 8.75], [-5.0, 8.96], [-5.5, 8.75], [-6.03, 8.97], [-6.18, 9.32], [-6.25, 9.35], [-6.5, 9.25], [-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]]]]}, "2024-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-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], [-5.53, 13.03], [-5.0, 13.25], [-4.5, 13.04], [-4.0, 13.25], [-3.5, 13.04], [-3.0, 13.25], [-2.47, 13.03], [-2.25, 12.5], [-2.35, 12.25], [-2.32, 12.18], [-2.25, 12.15], [-2.0, 12.25], [-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], [-3.03, 9.97], [-3.18, 10.32], [-3.25, 10.35], [-3.5, 10.25], [-3.75, 10.35], [-3.82, 10.32], [-3.85, 10.25], [-3.75, 10.0], [-3.85, 9.75], [-3.75, 9.5], [-3.97, 8.97], [-4.5, 8.75], [-5.0, 8.96], [-5.5, 8.75], [-6.03, 8.97], [-6.18, 9.32], [-6.25, 9.35], [-6.5, 9.25], [-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]]]]}, "2024-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-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], [-5.53, 13.03], [-5.0, 13.25], [-4.5, 13.04], [-4.0, 13.25], [-3.5, 13.04], [-3.0, 13.25], [-2.47, 13.03], [-2.25, 12.5], [-2.35, 12.25], [-2.32, 12.18], [-1.97, 12.03], [-1.75, 11.5], [-1.97, 10.97], [-2.5, 10.75], [-2.75, 10.85], [-2.82, 10.82], [-2.97, 10.47], [-3.5, 10.25], [-3.75, 10.35], [-3.82, 10.32], [-3.85, 10.25], [-3.75, 10.0], [-3.85, 9.75], [-3.75, 9.5], [-3.97, 8.97], [-4.5, 8.75], [-5.0, 8.96], [-5.5, 8.75], [-6.03, 8.97], [-6.18, 9.32], [-6.25, 9.35], [-6.5, 9.25], [-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]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.018107776554075}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.012414423786372}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.230726091789506, 25.72423967847641, 25.603503462847584, 25.95275895860459]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [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": [-1.7557216535468803, -2.1188462701575825, -2.22717400607742, -1.8366388361447719]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2669410434537554, -2.8048296637549583, -3.018107776554075, -2.565411806516636]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5937935737547724, -1.9195417061812403, -2.005858077475324, -1.6448427284082485]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9315035837095704, -2.562570378366113, -2.5965339263107015, -2.166805715903305]}}