{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:00.355914", "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": "2022-Nov-07_to_2022-Nov-12_355.5_14.5"}, "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": 2022110000288}, "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 07 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 12 2022"}, "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": 59916.51215622621}, "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": ["Mali"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "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": 14.5}, "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": 355.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "355.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.0, 15.75], [-3.47, 15.53], [-3.25, 15.0], [-3.47, 14.47], [-3.82, 14.32], [-3.97, 13.97], [-4.5, 13.75], [-5.03, 13.97], [-5.25, 14.5], [-5.03, 15.03], [-4.68, 15.18], [-4.53, 15.53], [-4.0, 15.75]]]]}, "2022-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.75, 14.5], [-5.53, 15.03], [-5.18, 15.18], [-5.03, 15.53], [-4.5, 15.75], [-4.25, 15.65], [-4.0, 15.75], [-3.47, 15.53], [-3.25, 15.0], [-3.47, 14.47], [-3.82, 14.32], [-3.85, 14.25], [-3.75, 14.0], [-3.85, 13.75], [-3.75, 13.5], [-3.97, 12.97], [-4.5, 12.75], [-5.03, 12.97], [-5.25, 13.5], [-5.15, 13.75], [-5.18, 13.82], [-5.53, 13.97], [-5.75, 14.5]]]]}, "2022-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.15, 14.25], [-7.25, 14.5], [-7.03, 15.03], [-6.5, 15.25], [-6.25, 15.15], [-6.18, 15.18], [-6.03, 15.53], [-5.5, 15.75], [-5.25, 15.65], [-5.0, 15.75], [-4.75, 15.65], [-4.5, 15.75], [-4.25, 15.65], [-4.0, 15.75], [-3.47, 15.53], [-3.25, 15.0], [-3.47, 14.47], [-3.82, 14.32], [-3.85, 14.25], [-3.75, 14.0], [-3.85, 13.75], [-3.75, 13.5], [-3.97, 12.97], [-4.5, 12.75], [-4.75, 12.85], [-5.0, 12.75], [-5.25, 12.85], [-5.5, 12.75], [-5.75, 12.85], [-6.0, 12.75], [-6.25, 12.85], [-6.5, 12.75], [-7.03, 12.97], [-7.25, 13.5], [-7.15, 13.75], [-7.25, 14.0], [-7.15, 14.25]]]]}, "2022-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.75, 15.0], [-7.53, 15.53], [-7.0, 15.75], [-6.47, 15.53], [-6.32, 15.18], [-6.25, 15.15], [-6.18, 15.18], [-6.03, 15.53], [-5.5, 15.75], [-5.25, 15.65], [-5.0, 15.75], [-4.75, 15.65], [-4.5, 15.75], [-4.25, 15.65], [-4.0, 15.75], [-3.47, 15.53], [-3.25, 15.0], [-3.47, 14.47], [-3.82, 14.32], [-3.85, 14.25], [-3.75, 14.0], [-3.85, 13.75], [-3.75, 13.5], [-3.97, 12.97], [-4.5, 12.75], [-4.75, 12.85], [-5.0, 12.75], [-5.25, 12.85], [-5.5, 12.75], [-5.75, 12.85], [-6.0, 12.75], [-6.25, 12.85], [-6.5, 12.75], [-7.03, 12.97], [-7.25, 13.5], [-7.15, 13.75], [-7.25, 14.0], [-7.15, 14.25], [-7.18, 14.32], [-7.53, 14.47], [-7.75, 15.0]]]]}, "2022-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.75, 15.0], [-7.53, 15.53], [-7.0, 15.75], [-6.47, 15.53], [-6.32, 15.18], [-6.25, 15.15], [-6.18, 15.18], [-6.03, 15.53], [-5.5, 15.75], [-5.25, 15.65], [-5.0, 15.75], [-4.75, 15.65], [-4.5, 15.75], [-4.25, 15.65], [-4.0, 15.75], [-3.47, 15.53], [-3.25, 15.0], [-3.47, 14.47], [-3.82, 14.32], [-3.85, 14.25], [-3.75, 14.0], [-3.97, 13.47], [-4.32, 13.32], [-4.47, 12.97], [-5.0, 12.75], [-5.25, 12.85], [-5.5, 12.75], [-5.75, 12.85], [-6.0, 12.75], [-6.25, 12.85], [-6.5, 12.75], [-7.03, 12.97], [-7.25, 13.5], [-7.15, 13.75], [-7.25, 14.0], [-7.15, 14.25], [-7.18, 14.32], [-7.53, 14.47], [-7.75, 15.0]]]]}, "2022-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.97, 15.03], [-3.75, 14.5], [-3.85, 14.25], [-3.75, 14.0], [-3.97, 13.47], [-4.5, 13.25], [-4.75, 13.35], [-5.0, 13.25], [-5.53, 13.47], [-5.75, 14.0], [-5.53, 14.53], [-5.18, 14.68], [-5.03, 15.03], [-4.5, 15.25], [-3.97, 15.03]]], [[[-7.53, 14.47], [-7.75, 15.0], [-7.53, 15.53], [-7.0, 15.75], [-6.47, 15.53], [-6.25, 15.0], [-6.47, 14.47], [-7.0, 14.25], [-7.53, 14.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5002708551547244}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.403085645998457}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.319735953935606, 27.341438289835423, 26.634431134833164, 26.472548673475558, 26.41172704917011, 26.919157705135376]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.076868836951178, 26.646289356052762, 25.995732943815653, 25.73928581487013, 25.072227922377806, 25.836175829286447]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.257815602668529, -2.0726317071874405, -2.445050555269874, -2.4888818968702906, -2.4647947670200634, -2.049968677628911]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3057583524968663, -2.5985262129768785, -3.159535392884152, -3.2623531609323777, -3.5002708551547244, -2.4153809677385425]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.697938604399846, -1.600451058504209, -1.893466880688717, -1.9198815431518146, -1.894835716835881, -1.5865799610792384]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6983518575243948, -1.8968355162880375, -2.505129753996144, -2.5858977960703644, -2.6714147143514384, -1.6322408905638333]}}