{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:48.940739", "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": "2015-Sep-12_to_2015-Sep-14_31.5_-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": 2015090000474}, "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": "September 12 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 14 2015"}, "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": 74211.47165539183}, "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": ["Mozambique", "South Africa", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": 31.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "31.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 32.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.75, -23.5], [28.97, -22.97], [29.32, -22.82], [29.38, -22.7], [28.97, -22.53], [28.75, -22.0], [28.97, -21.47], [29.32, -21.32], [29.47, -20.97], [30.0, -20.75], [30.25, -20.85], [30.32, -20.82], [30.47, -20.47], [31.0, -20.25], [31.53, -20.47], [31.68, -20.82], [32.03, -20.97], [32.18, -21.32], [32.53, -21.47], [32.75, -22.0], [32.65, -22.25], [32.75, -22.5], [32.65, -22.75], [32.75, -23.0], [32.65, -23.25], [32.75, -23.5], [32.53, -24.03], [32.0, -24.25], [31.75, -24.15], [31.5, -24.25], [31.25, -24.15], [31.18, -24.18], [31.03, -24.53], [30.5, -24.75], [30.25, -24.65], [30.0, -24.75], [29.47, -24.53], [29.32, -24.18], [28.97, -24.03], [28.75, -23.5]]]]}, "2015-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.75, -23.5], [28.97, -22.97], [29.32, -22.82], [29.38, -22.7], [28.97, -22.53], [28.75, -22.0], [28.97, -21.47], [29.32, -21.32], [29.47, -20.97], [30.0, -20.75], [30.25, -20.85], [30.32, -20.82], [30.47, -20.47], [31.0, -20.25], [31.53, -20.47], [31.68, -20.82], [32.03, -20.97], [32.18, -21.32], [32.53, -21.47], [32.75, -22.0], [32.65, -22.25], [32.75, -22.5], [32.65, -22.75], [32.75, -23.0], [32.65, -23.25], [32.75, -23.5], [32.53, -24.03], [32.0, -24.25], [31.75, -24.15], [31.5, -24.25], [31.25, -24.15], [31.18, -24.18], [31.03, -24.53], [30.5, -24.75], [30.25, -24.65], [30.0, -24.75], [29.47, -24.53], [29.32, -24.18], [28.97, -24.03], [28.75, -23.5]]]]}, "2015-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.75, -23.5], [28.97, -22.97], [29.32, -22.82], [29.38, -22.7], [28.97, -22.53], [28.75, -22.0], [28.97, -21.47], [29.32, -21.32], [29.47, -20.97], [30.0, -20.75], [30.25, -20.85], [30.32, -20.82], [30.47, -20.47], [31.0, -20.25], [31.53, -20.47], [31.68, -20.82], [32.03, -20.97], [32.18, -21.32], [32.53, -21.47], [32.75, -22.0], [32.65, -22.25], [32.75, -22.5], [32.65, -22.75], [32.75, -23.0], [32.65, -23.25], [32.75, -23.5], [32.53, -24.03], [32.0, -24.25], [31.75, -24.15], [31.5, -24.25], [31.25, -24.15], [31.18, -24.18], [31.03, -24.53], [30.5, -24.75], [30.25, -24.65], [30.0, -24.75], [29.47, -24.53], [29.32, -24.18], [28.97, -24.03], [28.75, -23.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.382745514931003}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.55799376418004}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.75462533161658, 17.34992859666346, 17.355285802463413]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.7199195830907, 11.502108371600741, 11.460091939335086]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.187534404793922, -4.691155306233775, -4.795291581512424]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.151618532160455, -5.226959865231947, -5.382745514931003]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4206134672941757, -1.554536989177622, -1.570554421987026]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.516252488415544, -1.7051622287697523, -1.6716493763934464]}}