{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:36.408364", "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": "2012-Oct-23_to_2012-Oct-25_28.5_-19.0"}, "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": 2012100000914}, "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 23 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 25 2012"}, "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": 366055.5494111805}, "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": ["Botswana", "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": -19.0}, "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": 28.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.25}, "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": -27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, -17.97], [25.5, -17.75], [25.75, -17.85], [26.0, -17.75], [26.25, -17.85], [26.5, -17.75], [26.75, -17.85], [27.0, -17.75], [27.25, -17.85], [27.32, -17.82], [27.47, -17.47], [28.0, -17.25], [28.53, -17.47], [28.68, -17.82], [28.75, -17.85], [29.0, -17.75], [29.25, -17.85], [29.5, -17.75], [30.03, -17.97], [30.18, -18.32], [30.53, -18.47], [30.68, -18.82], [31.03, -18.97], [31.25, -19.5], [31.15, -19.75], [31.25, -20.0], [31.03, -20.53], [30.5, -20.75], [30.75, -20.85], [31.0, -20.75], [31.25, -20.85], [31.5, -20.75], [32.03, -20.97], [32.18, -21.32], [32.53, -21.47], [32.75, -22.0], [32.53, -22.53], [32.0, -22.75], [31.75, -22.65], [31.63, -22.7], [31.75, -23.0], [31.65, -23.25], [31.75, -23.5], [31.53, -24.03], [31.18, -24.18], [31.15, -24.25], [31.25, -24.5], [31.03, -25.03], [30.68, -25.18], [30.65, -25.25], [30.68, -25.32], [31.03, -25.47], [31.25, -26.0], [31.03, -26.53], [30.5, -26.75], [30.2, -26.62], [30.15, -26.75], [30.25, -27.0], [30.15, -27.25], [30.25, -27.5], [30.03, -28.03], [29.5, -28.25], [29.25, -28.15], [29.0, -28.25], [28.75, -28.15], [28.5, -28.25], [27.97, -28.03], [27.82, -27.68], [27.47, -27.53], [27.25, -27.0], [27.35, -26.75], [27.25, -26.5], [27.38, -26.2], [27.25, -26.15], [27.0, -26.25], [26.47, -26.03], [26.25, -25.5], [26.47, -24.97], [26.82, -24.82], [26.97, -24.47], [27.5, -24.25], [27.75, -24.35], [27.88, -24.3], [27.82, -24.18], [27.47, -24.03], [27.25, -23.5], [27.35, -23.25], [27.25, -23.0], [27.35, -22.75], [27.32, -22.68], [26.97, -22.53], [26.82, -22.18], [26.75, -22.15], [26.5, -22.25], [26.25, -22.15], [26.0, -22.25], [25.47, -22.03], [25.25, -21.5], [25.47, -20.97], [25.82, -20.82], [25.85, -20.75], [25.75, -20.5], [25.85, -20.25], [25.82, -20.18], [25.47, -20.03], [25.32, -19.68], [24.97, -19.53], [24.75, -19.0], [24.85, -18.75], [24.75, -18.5], [24.97, -17.97]], [[30.07, -20.57], [30.18, -20.82], [30.25, -20.85], [30.5, -20.75], [30.07, -20.57]]]]}, "2012-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, -17.97], [25.5, -17.75], [25.75, -17.85], [26.0, -17.75], [26.25, -17.85], [26.5, -17.75], [26.75, -17.85], [27.0, -17.75], [27.25, -17.85], [27.32, -17.82], [27.47, -17.47], [28.0, -17.25], [28.53, -17.47], [28.68, -17.82], [28.75, -17.85], [29.0, -17.75], [29.25, -17.85], [29.5, -17.75], [30.03, -17.97], [30.18, -18.32], [30.53, -18.47], [30.68, -18.82], [31.03, -18.97], [31.25, -19.5], [31.15, -19.75], [31.25, -20.0], [31.03, -20.53], [30.5, -20.75], [30.75, -20.85], [31.0, -20.75], [31.25, -20.85], [31.5, -20.75], [32.03, -20.97], [32.18, -21.32], [32.53, -21.47], [32.75, -22.0], [32.53, -22.53], [32.0, -22.75], [31.75, -22.65], [31.63, -22.7], [31.75, -23.0], [31.65, -23.25], [31.75, -23.5], [31.53, -24.03], [31.18, -24.18], [31.15, -24.25], [31.25, -24.5], [31.03, -25.03], [30.68, -25.18], [30.65, -25.25], [30.68, -25.32], [31.03, -25.47], [31.25, -26.0], [31.03, -26.53], [30.5, -26.75], [30.2, -26.62], [30.15, -26.75], [30.25, -27.0], [30.15, -27.25], [30.25, -27.5], [30.03, -28.03], [29.5, -28.25], [29.25, -28.15], [29.0, -28.25], [28.75, -28.15], [28.5, -28.25], [27.97, -28.03], [27.82, -27.68], [27.47, -27.53], [27.25, -27.0], [27.35, -26.75], [27.25, -26.5], [27.38, -26.2], [27.25, -26.15], [27.0, -26.25], [26.47, -26.03], [26.25, -25.5], [26.47, -24.97], [26.82, -24.82], [26.97, -24.47], [27.5, -24.25], [27.75, -24.35], [27.88, -24.3], [27.82, -24.18], [27.47, -24.03], [27.25, -23.5], [27.35, -23.25], [27.25, -23.0], [27.35, -22.75], [27.32, -22.68], [26.97, -22.53], [26.82, -22.18], [26.75, -22.15], [26.5, -22.25], [26.25, -22.15], [26.0, -22.25], [25.47, -22.03], [25.25, -21.5], [25.47, -20.97], [25.82, -20.82], [25.85, -20.75], [25.75, -20.5], [25.85, -20.25], [25.82, -20.18], [25.47, -20.03], [25.32, -19.68], [24.97, -19.53], [24.75, -19.0], [24.85, -18.75], [24.75, -18.5], [24.97, -17.97]], [[30.07, -20.57], [30.18, -20.82], [30.25, -20.85], [30.5, -20.75], [30.07, -20.57]]]]}, "2012-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, -17.97], [25.5, -17.75], [25.75, -17.85], [26.0, -17.75], [26.25, -17.85], [26.5, -17.75], [26.75, -17.85], [27.0, -17.75], [27.25, -17.85], [27.32, -17.82], [27.47, -17.47], [28.0, -17.25], [28.53, -17.47], [28.68, -17.82], [28.75, -17.85], [29.0, -17.75], [29.25, -17.85], [29.5, -17.75], [30.03, -17.97], [30.18, -18.32], [30.53, -18.47], [30.68, -18.82], [31.03, -18.97], [31.25, -19.5], [31.15, -19.75], [31.25, -20.0], [31.03, -20.53], [30.5, -20.75], [30.75, -20.85], [31.0, -20.75], [31.25, -20.85], [31.5, -20.75], [32.03, -20.97], [32.18, -21.32], [32.53, -21.47], [32.75, -22.0], [32.53, -22.53], [32.0, -22.75], [31.75, -22.65], [31.63, -22.7], [31.75, -23.0], [31.65, -23.25], [31.75, -23.5], [31.53, -24.03], [31.18, -24.18], [31.15, -24.25], [31.25, -24.5], [31.03, -25.03], [30.68, -25.18], [30.65, -25.25], [30.68, -25.32], [31.03, -25.47], [31.25, -26.0], [31.03, -26.53], [30.5, -26.75], [30.2, -26.62], [30.15, -26.75], [30.25, -27.0], [30.15, -27.25], [30.25, -27.5], [30.03, -28.03], [29.5, -28.25], [29.25, -28.15], [29.0, -28.25], [28.75, -28.15], [28.5, -28.25], [27.97, -28.03], [27.82, -27.68], [27.47, -27.53], [27.25, -27.0], [27.35, -26.75], [27.25, -26.5], [27.38, -26.2], [27.25, -26.15], [27.0, -26.25], [26.47, -26.03], [26.25, -25.5], [26.47, -24.97], [26.82, -24.82], [26.97, -24.47], [27.5, -24.25], [27.75, -24.35], [27.88, -24.3], [27.82, -24.18], [27.47, -24.03], [27.25, -23.5], [27.35, -23.25], [27.25, -23.0], [27.35, -22.75], [27.32, -22.68], [26.97, -22.53], [26.82, -22.18], [26.75, -22.15], [26.5, -22.25], [26.25, -22.15], [26.0, -22.25], [25.47, -22.03], [25.25, -21.5], [25.47, -20.97], [25.82, -20.82], [25.85, -20.75], [25.75, -20.5], [25.85, -20.25], [25.82, -20.18], [25.47, -20.03], [25.32, -19.68], [24.97, -19.53], [24.75, -19.0], [24.85, -18.75], [24.75, -18.5], [24.97, -17.97]], [[30.07, -20.57], [30.18, -20.82], [30.25, -20.85], [30.5, -20.75], [30.07, -20.57]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.417346596072434}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.271630197509838}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.29434835560818, 17.970605649189906, 19.223508316833204]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.986768098696132, 10.340821466026853, 12.594179928146161]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.804143177864683, -6.125252655014816, -4.885494759650008]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.349342403453477, -8.417346596072434, -6.9196383598585385]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6743195988420234, -2.0955999204003577, -1.6410664991293884]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.569774351758871, -2.5435927738950754, -2.0302612983314376]}}