{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:39.529363", "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": "2019-Oct-13_to_2019-Oct-15_15.5_-14.5"}, "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": 2019100000504}, "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 13 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 15 2019"}, "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": 53890.524292275295}, "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": -14.5}, "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": 15.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "15.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.75}, "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": {"2019-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, -14.53], [13.75, -14.0], [13.97, -13.47], [14.5, -13.25], [14.75, -13.35], [15.0, -13.25], [15.25, -13.35], [15.32, -13.32], [15.47, -12.97], [16.0, -12.75], [16.25, -12.85], [16.5, -12.75], [16.75, -12.85], [17.0, -12.75], [17.53, -12.97], [17.75, -13.5], [17.65, -13.75], [17.75, -14.0], [17.65, -14.25], [17.75, -14.5], [17.53, -15.03], [17.18, -15.18], [17.03, -15.53], [16.68, -15.68], [16.53, -16.03], [16.0, -16.25], [15.75, -16.15], [15.5, -16.25], [15.25, -16.15], [15.0, -16.25], [14.47, -16.03], [14.25, -15.5], [14.47, -14.97], [14.88, -14.8], [14.82, -14.68], [14.75, -14.65], [14.5, -14.75], [13.97, -14.53]]]]}, "2019-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, -14.53], [13.75, -14.0], [13.97, -13.47], [14.5, -13.25], [14.75, -13.35], [15.0, -13.25], [15.25, -13.35], [15.32, -13.32], [15.47, -12.97], [16.0, -12.75], [16.25, -12.85], [16.5, -12.75], [16.75, -12.85], [17.0, -12.75], [17.53, -12.97], [17.75, -13.5], [17.65, -13.75], [17.75, -14.0], [17.65, -14.25], [17.75, -14.5], [17.53, -15.03], [17.18, -15.18], [17.03, -15.53], [16.68, -15.68], [16.53, -16.03], [16.0, -16.25], [15.75, -16.15], [15.5, -16.25], [15.25, -16.15], [15.0, -16.25], [14.47, -16.03], [14.25, -15.5], [14.47, -14.97], [14.88, -14.8], [14.82, -14.68], [14.75, -14.65], [14.5, -14.75], [13.97, -14.53]]]]}, "2019-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, -14.53], [13.75, -14.0], [13.97, -13.47], [14.5, -13.25], [14.75, -13.35], [15.0, -13.25], [15.25, -13.35], [15.32, -13.32], [15.47, -12.97], [16.0, -12.75], [16.25, -12.85], [16.5, -12.75], [16.75, -12.85], [17.0, -12.75], [17.53, -12.97], [17.75, -13.5], [17.65, -13.75], [17.75, -14.0], [17.65, -14.25], [17.75, -14.5], [17.53, -15.03], [17.18, -15.18], [17.03, -15.53], [16.68, -15.68], [16.53, -16.03], [16.0, -16.25], [15.75, -16.15], [15.5, -16.25], [15.25, -16.15], [15.0, -16.25], [14.47, -16.03], [14.25, -15.5], [14.47, -14.97], [14.88, -14.8], [14.82, -14.68], [14.75, -14.65], [14.5, -14.75], [13.97, -14.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.927379465171157}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.4751305731558197}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.55428094293802, 20.68885084281135, 20.32801743021355]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.279776132458153, 19.13283163368743, 18.41103260178687]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.4767350377262227, -3.3120071640027313, -3.6366495177385048]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.384010689055856, -4.649251803306811, -4.927379465171157]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.96559731466972, -1.8028253582532916, -1.925390400424783]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2248933616151474, -2.562192306816807, -2.6517807691648403]}}