{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:19.101360", "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": "2014-Sep-27_to_2014-Sep-30_24.0_13.5"}, "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": 2014090000981}, "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 27 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 30 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 57300.77741804867}, "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": ["Chad", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": 13.5}, "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": 24.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.0, 13.75], [22.25, 13.65], [22.5, 13.75], [22.75, 13.65], [23.0, 13.75], [23.25, 13.65], [23.32, 13.68], [23.35, 13.75], [23.25, 14.0], [23.47, 14.53], [24.0, 14.75], [24.53, 14.53], [24.75, 14.0], [24.65, 13.75], [24.68, 13.68], [25.03, 13.53], [25.18, 13.18], [25.53, 13.03], [25.75, 12.5], [25.53, 11.97], [25.18, 11.82], [25.03, 11.47], [24.5, 11.25], [24.25, 11.35], [24.0, 11.25], [23.75, 11.35], [23.5, 11.25], [23.25, 11.35], [23.0, 11.25], [22.47, 11.47], [22.32, 11.82], [22.25, 11.85], [22.0, 11.75], [21.75, 11.85], [21.5, 11.75], [20.97, 11.97], [20.75, 12.5], [20.97, 13.03], [21.32, 13.18], [21.47, 13.53], [22.0, 13.75]]]]}, "2014-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.0, 13.75], [22.25, 13.65], [22.5, 13.75], [22.75, 13.65], [23.0, 13.75], [23.25, 13.65], [23.32, 13.68], [23.35, 13.75], [23.25, 14.0], [23.47, 14.53], [24.0, 14.75], [24.53, 14.53], [24.75, 14.0], [24.65, 13.75], [24.68, 13.68], [25.03, 13.53], [25.18, 13.18], [25.53, 13.03], [25.75, 12.5], [25.53, 11.97], [25.18, 11.82], [25.03, 11.47], [24.5, 11.25], [24.25, 11.35], [24.0, 11.25], [23.75, 11.35], [23.5, 11.25], [23.25, 11.35], [23.0, 11.25], [22.47, 11.47], [22.32, 11.82], [22.25, 11.85], [22.0, 11.75], [21.75, 11.85], [21.5, 11.75], [20.97, 11.97], [20.75, 12.5], [20.97, 13.03], [21.32, 13.18], [21.47, 13.53], [22.0, 13.75]]]]}, "2014-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.0, 13.75], [22.25, 13.65], [22.5, 13.75], [22.75, 13.65], [23.0, 13.75], [23.25, 13.65], [23.32, 13.68], [23.35, 13.75], [23.25, 14.0], [23.47, 14.53], [24.0, 14.75], [24.53, 14.53], [24.75, 14.0], [24.65, 13.75], [24.68, 13.68], [25.03, 13.53], [25.18, 13.18], [25.53, 13.03], [25.75, 12.5], [25.53, 11.97], [25.18, 11.82], [25.03, 11.47], [24.5, 11.25], [24.25, 11.35], [24.0, 11.25], [23.75, 11.35], [23.5, 11.25], [23.25, 11.35], [23.0, 11.25], [22.47, 11.47], [22.32, 11.82], [22.25, 11.85], [22.0, 11.75], [21.75, 11.85], [21.5, 11.75], [20.97, 11.97], [20.75, 12.5], [20.97, 13.03], [21.32, 13.18], [21.47, 13.53], [22.0, 13.75]]]]}, "2014-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.47, 14.53], [24.0, 14.75], [24.53, 14.53], [24.75, 14.0], [24.65, 13.75], [24.75, 13.5], [24.53, 12.97], [24.0, 12.75], [23.47, 12.97], [23.25, 13.5], [23.35, 13.75], [23.25, 14.0], [23.47, 14.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.941933679648969}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8666837831320755}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.50283940976726, 23.677333438820312, 23.31931700852732, 23.47481915483337]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.394566955672246, 21.6442229807397, 21.4063867856907, 22.607084518389286]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8766607821945807, -1.6802845839852154, -2.055902779179812, -1.7451142214799518]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.941933679648969, -2.4745795622510514, -2.7190630293399067, -1.8570665124358925]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8130848170575713, -1.6166002547560552, -2.0293925850917423, -1.5145257052532366]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1320878455679106, -1.8516363543677337, -2.722138494197664, -1.711191548927309]}}