{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:24.964558", "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": "2013-Sep-23_to_2013-Sep-25_357.5_7.5"}, "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": 2013090001066}, "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 23 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 25 2013"}, "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": 58338.530858188155}, "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": ["C\u00f4te d'Ivoire", "Ghana"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-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": 7.5}, "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": 357.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 355.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.65, 6.25], [-4.75, 6.5], [-4.53, 7.03], [-4.18, 7.18], [-4.03, 7.53], [-3.68, 7.68], [-3.65, 7.75], [-3.75, 8.0], [-3.53, 8.53], [-3.0, 8.75], [-2.75, 8.65], [-2.5, 8.75], [-1.97, 8.53], [-1.75, 8.0], [-1.85, 7.75], [-1.75, 7.5], [-1.85, 7.25], [-1.82, 7.18], [-1.47, 7.03], [-1.25, 6.5], [-1.47, 5.97], [-1.82, 5.82], [-1.97, 5.47], [-2.32, 5.32], [-2.47, 4.97], [-3.0, 4.75], [-3.25, 4.85], [-3.5, 4.75], [-3.75, 4.85], [-4.0, 4.75], [-4.53, 4.97], [-4.75, 5.5], [-4.65, 5.75], [-4.75, 6.0], [-4.65, 6.25]]]]}, "2013-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.65, 6.25], [-4.75, 6.5], [-4.53, 7.03], [-4.18, 7.18], [-4.03, 7.53], [-3.68, 7.68], [-3.65, 7.75], [-3.75, 8.0], [-3.53, 8.53], [-3.0, 8.75], [-2.75, 8.65], [-2.5, 8.75], [-1.97, 8.53], [-1.75, 8.0], [-1.85, 7.75], [-1.75, 7.5], [-1.85, 7.25], [-1.82, 7.18], [-1.47, 7.03], [-1.25, 6.5], [-1.47, 5.97], [-1.82, 5.82], [-1.97, 5.47], [-2.32, 5.32], [-2.47, 4.97], [-3.0, 4.75], [-3.25, 4.85], [-3.5, 4.75], [-3.75, 4.85], [-4.0, 4.75], [-4.53, 4.97], [-4.75, 5.5], [-4.65, 5.75], [-4.75, 6.0], [-4.65, 6.25]]]]}, "2013-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.65, 6.25], [-4.75, 6.5], [-4.53, 7.03], [-4.18, 7.18], [-4.03, 7.53], [-3.68, 7.68], [-3.65, 7.75], [-3.75, 8.0], [-3.53, 8.53], [-3.0, 8.75], [-2.75, 8.65], [-2.5, 8.75], [-1.97, 8.53], [-1.75, 8.0], [-1.85, 7.75], [-1.75, 7.5], [-1.85, 7.25], [-1.82, 7.18], [-1.47, 7.03], [-1.25, 6.5], [-1.47, 5.97], [-1.82, 5.82], [-1.97, 5.47], [-2.32, 5.32], [-2.47, 4.97], [-3.0, 4.75], [-3.25, 4.85], [-3.5, 4.75], [-3.75, 4.85], [-4.0, 4.75], [-4.53, 4.97], [-4.75, 5.5], [-4.65, 5.75], [-4.75, 6.0], [-4.65, 6.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.5635088558537973}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5135378665978787}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.840417170372177, 23.491419964146644, 23.971196688168618]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.447754254873587, 22.96860983167238, 23.406408350559673]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.414514033038418, -1.793900530954189, -1.3321990358010292]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9188786699393745, -2.5635088558537973, -1.6937215670171781]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8696598438713767, -2.4055252835479473, -1.8388087658327963]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.427283777434246, -2.9264905400906125, -2.4107075170751617]}}