{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:31.661824", "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-Jan-13_to_2011-Jan-15_14.0_-13.5"}, "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": 2011010000704}, "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": "January 13 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 15 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": 66096.83157020778}, "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": ["W.Southern-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": -13.5}, "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": 14.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "14.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 12.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "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": {"2011-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.35, -13.75], [12.25, -13.5], [12.47, -12.97], [12.82, -12.82], [12.97, -12.47], [13.5, -12.25], [13.75, -12.35], [14.0, -12.25], [14.25, -12.35], [14.5, -12.25], [14.75, -12.35], [15.0, -12.25], [15.25, -12.35], [15.5, -12.25], [15.75, -12.35], [16.0, -12.25], [16.25, -12.35], [16.5, -12.25], [17.03, -12.47], [17.25, -13.0], [17.15, -13.25], [17.25, -13.5], [17.15, -13.75], [17.25, -14.0], [17.03, -14.53], [16.5, -14.75], [16.25, -14.65], [16.0, -14.75], [15.47, -14.53], [15.32, -14.18], [15.0, -14.04], [14.68, -14.18], [14.65, -14.25], [14.75, -14.5], [14.53, -15.03], [14.0, -15.25], [13.75, -15.15], [13.5, -15.25], [13.25, -15.15], [13.0, -15.25], [12.47, -15.03], [12.25, -14.5], [12.35, -14.25], [12.25, -14.0], [12.35, -13.75]]]]}, "2011-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.35, -13.75], [12.25, -13.5], [12.47, -12.97], [12.82, -12.82], [12.97, -12.47], [13.5, -12.25], [13.75, -12.35], [14.0, -12.25], [14.25, -12.35], [14.5, -12.25], [14.75, -12.35], [15.0, -12.25], [15.25, -12.35], [15.5, -12.25], [15.75, -12.35], [16.0, -12.25], [16.25, -12.35], [16.5, -12.25], [17.03, -12.47], [17.25, -13.0], [17.15, -13.25], [17.25, -13.5], [17.15, -13.75], [17.25, -14.0], [17.03, -14.53], [16.5, -14.75], [16.25, -14.65], [16.0, -14.75], [15.47, -14.53], [15.32, -14.18], [15.0, -14.04], [14.68, -14.18], [14.65, -14.25], [14.75, -14.5], [14.53, -15.03], [14.0, -15.25], [13.75, -15.15], [13.5, -15.25], [13.25, -15.15], [13.0, -15.25], [12.47, -15.03], [12.25, -14.5], [12.35, -14.25], [12.25, -14.0], [12.35, -13.75]]]]}, "2011-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.35, -13.75], [12.25, -13.5], [12.47, -12.97], [12.82, -12.82], [12.97, -12.47], [13.5, -12.25], [13.75, -12.35], [14.0, -12.25], [14.25, -12.35], [14.5, -12.25], [14.75, -12.35], [15.0, -12.25], [15.25, -12.35], [15.5, -12.25], [15.75, -12.35], [16.0, -12.25], [16.25, -12.35], [16.5, -12.25], [17.03, -12.47], [17.25, -13.0], [17.15, -13.25], [17.25, -13.5], [17.15, -13.75], [17.25, -14.0], [17.03, -14.53], [16.5, -14.75], [16.25, -14.65], [16.0, -14.75], [15.47, -14.53], [15.32, -14.18], [15.0, -14.04], [14.68, -14.18], [14.65, -14.25], [14.75, -14.5], [14.53, -15.03], [14.0, -15.25], [13.75, -15.15], [13.5, -15.25], [13.25, -15.15], [13.0, -15.25], [12.47, -15.03], [12.25, -14.5], [12.35, -14.25], [12.25, -14.0], [12.35, -13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.332425556254009}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.258690259150946}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.340900773257886, 18.197701502328755, 19.238019667744823]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.898167446827358, 16.21401968261506, 16.954386663938294]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8586840422497992, -2.9854080305195407, -1.931978704683499]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7178292547628757, -4.332425556254009, -3.078270087616545]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6890773613507208, -2.679982581586662, -1.7336275711824]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4052572504497136, -3.32011049914453, -2.408343569954258]}}