{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:06.914642", "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-26_to_2022-Nov-29_15.0_-9.0"}, "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": 2022110001009}, "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 26 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 29 2022"}, "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": 76497.75833318601}, "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": ["Angola"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": -9.0}, "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": 15.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "15.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.75}, "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": -5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.35, -8.75], [13.25, -8.5], [13.35, -8.25], [13.25, -8.0], [13.35, -7.75], [13.25, -7.5], [13.35, -7.25], [13.25, -7.0], [13.47, -6.47], [14.0, -6.25], [14.25, -6.35], [14.5, -6.25], [14.75, -6.35], [14.82, -6.32], [14.85, -6.25], [14.75, -6.0], [14.97, -5.47], [15.5, -5.25], [16.03, -5.47], [16.25, -6.0], [16.15, -6.25], [16.25, -6.5], [16.03, -7.03], [15.68, -7.18], [15.65, -7.25], [15.68, -7.32], [16.03, -7.47], [16.25, -8.0], [16.15, -8.25], [16.25, -8.5], [16.03, -9.03], [15.68, -9.18], [15.65, -9.25], [15.75, -9.5], [15.53, -10.03], [15.18, -10.18], [15.03, -10.53], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.25, -9.5], [13.35, -9.25], [13.25, -9.0], [13.35, -8.75]]]]}, "2022-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.35, -8.75], [13.25, -8.5], [13.35, -8.25], [13.25, -8.0], [13.35, -7.75], [13.25, -7.5], [13.35, -7.25], [13.25, -7.0], [13.47, -6.47], [14.0, -6.25], [14.25, -6.35], [14.5, -6.25], [14.75, -6.35], [14.82, -6.32], [14.85, -6.25], [14.75, -6.0], [14.97, -5.47], [15.5, -5.25], [16.03, -5.47], [16.25, -6.0], [16.15, -6.25], [16.25, -6.5], [16.15, -6.75], [16.25, -7.0], [16.15, -7.25], [16.25, -7.5], [16.15, -7.75], [16.25, -8.0], [16.15, -8.25], [16.25, -8.5], [16.03, -9.03], [15.68, -9.18], [15.65, -9.25], [15.75, -9.5], [15.53, -10.03], [15.18, -10.18], [15.03, -10.53], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.25, -9.5], [13.35, -9.25], [13.25, -9.0], [13.35, -8.75]]]]}, "2022-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.35, -8.75], [13.25, -8.5], [13.35, -8.25], [13.25, -8.0], [13.35, -7.75], [13.25, -7.5], [13.35, -7.25], [13.25, -7.0], [13.47, -6.47], [14.0, -6.25], [14.25, -6.35], [14.5, -6.25], [14.75, -6.35], [14.82, -6.32], [14.85, -6.25], [14.75, -6.0], [14.97, -5.47], [15.5, -5.25], [16.03, -5.47], [16.25, -6.0], [16.15, -6.25], [16.25, -6.5], [16.15, -6.75], [16.25, -7.0], [16.15, -7.25], [16.25, -7.5], [16.15, -7.75], [16.25, -8.0], [16.15, -8.25], [16.25, -8.5], [16.03, -9.03], [15.68, -9.18], [15.65, -9.25], [15.75, -9.5], [15.53, -10.03], [15.18, -10.18], [15.03, -10.53], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.25, -9.5], [13.35, -9.25], [13.25, -9.0], [13.35, -8.75]]]]}, "2022-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.96, -6.5], [14.75, -6.0], [14.97, -5.47], [15.5, -5.25], [16.03, -5.47], [16.25, -6.0], [16.04, -6.5], [16.25, -7.0], [16.15, -7.25], [16.25, -7.5], [16.03, -8.03], [15.5, -8.25], [14.97, -8.03], [14.75, -7.5], [14.85, -7.25], [14.75, -7.0], [14.96, -6.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.247774781741782}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7347589043874128}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.125107098650005, 20.899151244473103, 21.815780863164832, 20.583718279492473]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.101260393796736, 17.971583181311416, 18.671258785747682, 19.741736135216627]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3665661097098545, -2.4063421699942023, -1.482898597830242, -1.0598790048352005]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.0088975194861405, -3.247774781741782, -2.2331977671533423, -1.1977064603105418]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.825689981444573, -3.2343105190384556, -1.990543121750498, -1.4654594010891768]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.405912494246928, -4.26855160783079, -2.787904304658517, -1.5592928109678086]}}