{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:37.276371", "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": "2010-Sep-12_to_2010-Sep-14_28.0_-12.5"}, "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": 2010090000595}, "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 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 14 2010"}, "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": 75486.3619022904}, "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": ["Congo DRC", "Zambia"]}, "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": -12.5}, "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": 28.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.47, -11.97], [26.0, -11.75], [26.5, -11.96], [27.0, -11.75], [27.25, -11.85], [27.32, -11.82], [27.47, -11.47], [27.82, -11.32], [27.85, -11.25], [27.75, -11.0], [27.97, -10.47], [28.5, -10.25], [28.75, -10.35], [29.0, -10.25], [29.53, -10.47], [29.68, -10.82], [30.03, -10.97], [30.18, -11.32], [30.53, -11.47], [30.75, -12.0], [30.65, -12.25], [30.75, -12.5], [30.53, -13.03], [30.0, -13.25], [29.75, -13.15], [29.5, -13.25], [29.25, -13.15], [29.18, -13.18], [29.03, -13.53], [28.5, -13.75], [28.25, -13.65], [28.0, -13.75], [27.75, -13.65], [27.68, -13.68], [27.53, -14.03], [27.0, -14.25], [26.5, -14.04], [26.0, -14.25], [25.47, -14.03], [25.25, -13.5], [25.46, -13.0], [25.25, -12.5], [25.47, -11.97]]]]}, "2010-09-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.47, -11.97], [26.0, -11.75], [26.5, -11.96], [27.0, -11.75], [27.25, -11.85], [27.32, -11.82], [27.47, -11.47], [27.82, -11.32], [27.85, -11.25], [27.75, -11.0], [27.97, -10.47], [28.5, -10.25], [28.75, -10.35], [29.0, -10.25], [29.53, -10.47], [29.68, -10.82], [30.03, -10.97], [30.18, -11.32], [30.53, -11.47], [30.75, -12.0], [30.65, -12.25], [30.75, -12.5], [30.53, -13.03], [30.0, -13.25], [29.75, -13.15], [29.5, -13.25], [29.25, -13.15], [29.18, -13.18], [29.03, -13.53], [28.5, -13.75], [28.25, -13.65], [28.0, -13.75], [27.75, -13.65], [27.68, -13.68], [27.53, -14.03], [27.0, -14.25], [26.5, -14.04], [26.0, -14.25], [25.47, -14.03], [25.25, -13.5], [25.46, -13.0], [25.25, -12.5], [25.47, -11.97]]]]}, "2010-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.47, -11.97], [26.0, -11.75], [26.5, -11.96], [27.0, -11.75], [27.25, -11.85], [27.32, -11.82], [27.47, -11.47], [27.82, -11.32], [27.85, -11.25], [27.75, -11.0], [27.97, -10.47], [28.5, -10.25], [28.75, -10.35], [29.0, -10.25], [29.53, -10.47], [29.68, -10.82], [30.03, -10.97], [30.18, -11.32], [30.53, -11.47], [30.75, -12.0], [30.65, -12.25], [30.75, -12.5], [30.53, -13.03], [30.0, -13.25], [29.75, -13.15], [29.5, -13.25], [29.25, -13.15], [29.18, -13.18], [29.03, -13.53], [28.5, -13.75], [28.25, -13.65], [28.0, -13.75], [27.75, -13.65], [27.68, -13.68], [27.53, -14.03], [27.0, -14.25], [26.5, -14.04], [26.0, -14.25], [25.47, -14.03], [25.25, -13.5], [25.46, -13.0], [25.25, -12.5], [25.47, -11.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.291090248694161}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5076729723365863}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.824500157839452, 20.767249623677742, 21.69298732799308]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.719121067902336, 19.962271270756617, 20.736367658146833]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7083993908822435, -2.831173803744516, -1.9834457223829987]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2872641501718363, -3.291090248694161, -2.449969298656754]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.026483165323929, -2.101035718880622, -1.4683132624740887]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3500896027450615, -2.1978250997266513, -1.8295354657124083]}}