{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:33.367655", "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-Oct-02_to_2011-Oct-04_17.0_-22.5"}, "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": 2011100000211}, "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": "October 02 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 04 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": 93394.0866223566}, "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": ["Namibia"]}, "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": -22.5}, "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": 17.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.35, -23.25], [16.25, -23.0], [16.35, -22.75], [16.25, -22.5], [16.47, -21.97], [16.82, -21.82], [16.97, -21.47], [17.5, -21.25], [18.03, -21.47], [18.18, -21.82], [18.25, -21.85], [18.5, -21.75], [18.75, -21.85], [19.0, -21.75], [19.53, -21.97], [19.75, -22.5], [19.65, -22.75], [19.68, -22.82], [20.03, -22.97], [20.25, -23.5], [20.15, -23.75], [20.25, -24.0], [20.15, -24.25], [20.25, -24.5], [20.15, -24.75], [20.25, -25.0], [20.03, -25.53], [19.5, -25.75], [19.25, -25.65], [19.0, -25.75], [18.75, -25.65], [18.5, -25.75], [18.25, -25.65], [18.0, -25.75], [17.75, -25.65], [17.5, -25.75], [16.97, -25.53], [16.75, -25.0], [16.85, -24.75], [16.82, -24.68], [16.47, -24.53], [16.25, -24.0], [16.35, -23.75], [16.25, -23.5], [16.35, -23.25]]]]}, "2011-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.35, -23.25], [16.25, -23.0], [16.35, -22.75], [16.25, -22.5], [16.47, -21.97], [16.82, -21.82], [16.97, -21.47], [17.5, -21.25], [18.03, -21.47], [18.18, -21.82], [18.25, -21.85], [18.5, -21.75], [18.75, -21.85], [19.0, -21.75], [19.53, -21.97], [19.75, -22.5], [19.65, -22.75], [19.68, -22.82], [20.03, -22.97], [20.25, -23.5], [20.15, -23.75], [20.25, -24.0], [20.15, -24.25], [20.25, -24.5], [20.15, -24.75], [20.25, -25.0], [20.03, -25.53], [19.5, -25.75], [19.25, -25.65], [19.0, -25.75], [18.75, -25.65], [18.5, -25.75], [18.25, -25.65], [18.0, -25.75], [17.75, -25.65], [17.5, -25.75], [16.97, -25.53], [16.75, -25.0], [16.85, -24.75], [16.82, -24.68], [16.47, -24.53], [16.25, -24.0], [16.35, -23.75], [16.25, -23.5], [16.35, -23.25]]]]}, "2011-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.35, -23.25], [16.25, -23.0], [16.35, -22.75], [16.25, -22.5], [16.47, -21.97], [16.82, -21.82], [16.97, -21.47], [17.5, -21.25], [18.03, -21.47], [18.18, -21.82], [18.25, -21.85], [18.5, -21.75], [18.75, -21.85], [19.0, -21.75], [19.53, -21.97], [19.75, -22.5], [19.65, -22.75], [19.68, -22.82], [20.03, -22.97], [20.25, -23.5], [20.15, -23.75], [20.25, -24.0], [20.15, -24.25], [20.25, -24.5], [20.15, -24.75], [20.25, -25.0], [20.03, -25.53], [19.5, -25.75], [19.25, -25.65], [19.0, -25.75], [18.75, -25.65], [18.5, -25.75], [18.25, -25.65], [18.0, -25.75], [17.75, -25.65], [17.5, -25.75], [16.97, -25.53], [16.75, -25.0], [16.85, -24.75], [16.82, -24.68], [16.47, -24.53], [16.25, -24.0], [16.35, -23.75], [16.25, -23.5], [16.35, -23.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.946209340855319}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.268424225936653}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.94324514147678, 17.44777276129139, 18.236275710636505]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.833802385415481, 15.549603575736171, 16.561152332900008]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.535603209815846, -5.398226796819458, -4.871442671174658]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.946209340855319, -6.119017360425232, -5.477111928409613]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8303294328434998, -1.8592014689949767, -1.7574896236356317]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3599666563161663, -2.1767317040620804, -2.2122756607577423]}}