{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:47.989960", "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": "2011-Nov-09_to_2011-Nov-11_16.5_11.5"}, "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": 2011110000570}, "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 09 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 11 2011"}, "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": 75778.57877099374}, "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": ["Cameroon", "Chad"]}, "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": 11.5}, "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": 16.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.75}, "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": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.75, 12.5], [14.85, 12.75], [14.75, 13.0], [14.97, 13.53], [15.5, 13.75], [16.03, 13.53], [16.18, 13.18], [16.25, 13.15], [16.5, 13.25], [17.03, 13.03], [17.18, 12.68], [17.25, 12.65], [17.5, 12.75], [18.03, 12.53], [18.25, 12.0], [18.03, 11.47], [17.68, 11.32], [17.65, 11.25], [17.75, 11.0], [17.65, 10.75], [17.75, 10.5], [17.65, 10.25], [17.75, 10.0], [17.53, 9.47], [17.18, 9.32], [17.03, 8.97], [16.5, 8.75], [16.25, 8.85], [16.0, 8.75], [15.47, 8.97], [15.25, 9.5], [15.35, 9.75], [15.25, 10.0], [15.35, 10.25], [15.25, 10.5], [15.35, 10.75], [15.32, 10.82], [15.25, 10.85], [15.0, 10.75], [14.47, 10.97], [14.25, 11.5], [14.47, 12.03], [14.82, 12.18], [14.85, 12.25], [14.75, 12.5]]]]}, "2011-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.75, 12.5], [14.85, 12.75], [14.75, 13.0], [14.97, 13.53], [15.5, 13.75], [16.03, 13.53], [16.18, 13.18], [16.25, 13.15], [16.5, 13.25], [17.03, 13.03], [17.18, 12.68], [17.25, 12.65], [17.5, 12.75], [18.03, 12.53], [18.25, 12.0], [18.03, 11.47], [17.68, 11.32], [17.65, 11.25], [17.75, 11.0], [17.65, 10.75], [17.75, 10.5], [17.65, 10.25], [17.75, 10.0], [17.53, 9.47], [17.18, 9.32], [17.03, 8.97], [16.5, 8.75], [16.25, 8.85], [16.0, 8.75], [15.47, 8.97], [15.25, 9.5], [15.35, 9.75], [15.25, 10.0], [15.35, 10.25], [15.25, 10.5], [15.35, 10.75], [15.32, 10.82], [15.25, 10.85], [15.0, 10.75], [14.47, 10.97], [14.25, 11.5], [14.47, 12.03], [14.82, 12.18], [14.85, 12.25], [14.75, 12.5]]]]}, "2011-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.75, 12.5], [14.85, 12.75], [14.75, 13.0], [14.97, 13.53], [15.5, 13.75], [16.03, 13.53], [16.18, 13.18], [16.25, 13.15], [16.5, 13.25], [17.03, 13.03], [17.18, 12.68], [17.25, 12.65], [17.5, 12.75], [18.03, 12.53], [18.25, 12.0], [18.03, 11.47], [17.68, 11.32], [17.65, 11.25], [17.75, 11.0], [17.65, 10.75], [17.75, 10.5], [17.65, 10.25], [17.75, 10.0], [17.53, 9.47], [17.18, 9.32], [17.03, 8.97], [16.5, 8.75], [16.25, 8.85], [16.0, 8.75], [15.47, 8.97], [15.25, 9.5], [15.35, 9.75], [15.25, 10.0], [15.35, 10.25], [15.25, 10.5], [15.35, 10.75], [15.32, 10.82], [15.25, 10.85], [15.0, 10.75], [14.47, 10.97], [14.25, 11.5], [14.47, 12.03], [14.82, 12.18], [14.85, 12.25], [14.75, 12.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6459004227515948}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.547263718940739}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.453110415371896, 25.345212341934655, 26.084413012502978]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.617152146436126, 24.830215916148006, 25.260973275577157]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.167594680953921, -3.1564739639644674, -2.317722511903828]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.865181750193699, -3.6459004227515948, -2.726347606720765]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.741051615141316, -2.4784681065664333, -1.7426921763377365]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.24527098504975, -2.9232211897109353, -2.0890818539813063]}}