{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:36.402565", "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-28_14.5_-10.0"}, "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": 2022110001066}, "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 28 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 67288.7041286613}, "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"]}, "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": -10.0}, "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": 14.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "14.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[12.97, -8.47], [13.32, -8.32], [13.35, -8.25], [13.32, -8.18], [12.97, -8.03], [12.75, -7.5], [12.97, -6.97], [13.32, -6.82], [13.47, -6.47], [14.0, -6.25], [14.25, -6.35], [14.5, -6.25], [14.75, -6.35], [15.0, -6.25], [15.53, -6.47], [15.75, -7.0], [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], [15.53, -9.53], [15.18, -9.68], [15.15, -9.75], [15.25, -10.0], [15.03, -10.53], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.32, -9.68], [12.97, -9.53], [12.75, -9.0], [12.97, -8.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "W.Southern-Africa"]}, "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": [[[[12.97, -9.53], [12.75, -9.0], [12.97, -8.47], [13.32, -8.32], [13.35, -8.25], [13.32, -8.18], [12.97, -8.03], [12.75, -7.5], [12.97, -6.97], [13.32, -6.82], [13.47, -6.47], [14.0, -6.25], [14.25, -6.35], [14.5, -6.25], [14.75, -6.35], [15.0, -6.25], [15.53, -6.47], [15.75, -7.0], [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], [15.53, -9.53], [15.18, -9.68], [15.15, -9.75], [15.25, -10.0], [15.03, -10.53], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.32, -9.68], [12.97, -9.53]]]]}, "2022-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.97, -9.53], [12.75, -9.0], [12.97, -8.47], [13.32, -8.32], [13.35, -8.25], [13.32, -8.18], [12.97, -8.03], [12.75, -7.5], [12.97, -6.97], [13.32, -6.82], [13.47, -6.47], [14.0, -6.25], [14.25, -6.35], [14.5, -6.25], [14.75, -6.35], [15.0, -6.25], [15.53, -6.47], [15.75, -7.0], [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], [15.53, -9.53], [15.18, -9.68], [15.15, -9.75], [15.25, -10.0], [15.03, -10.53], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.32, -9.68], [12.97, -9.53]]]]}, "2022-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.97, -9.53], [12.75, -9.0], [12.97, -8.47], [13.32, -8.32], [13.35, -8.25], [13.32, -8.18], [12.97, -8.03], [12.75, -7.5], [12.97, -6.97], [13.32, -6.82], [13.47, -6.47], [14.0, -6.25], [14.25, -6.35], [14.5, -6.25], [14.75, -6.35], [15.0, -6.25], [15.53, -6.47], [15.75, -7.0], [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], [15.53, -9.53], [15.18, -9.68], [15.15, -9.75], [15.25, -10.0], [15.03, -10.53], [14.5, -10.75], [13.97, -10.53], [13.82, -10.18], [13.47, -10.03], [13.32, -9.68], [12.97, -9.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2824939812081197}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7852078553929713}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.402627552578508, 21.357877219106967, 22.283918460272673]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.101260393796736, 17.971583181311416, 18.671258785747682]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.403509480222947, -2.4457199914340295, -1.5063940945219372]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.038950716666818, -3.2824939812081197, -2.287412633762983]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8464259511172252, -3.222272198621272, -1.9697915833042123]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3755973702635607, -4.39965658614316, -2.7489701470311485]}}