{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:50:45.251112", "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": "2024-Jan-12_to_2024-Jan-16_20.5_-14.5"}, "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": 2024010000323}, "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": "January 12 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 16 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 56850.85607005458}, "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": ["Angola"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.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": -14.5}, "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": 20.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, -13.97], [18.82, -13.82], [18.97, -13.47], [19.5, -13.25], [19.75, -13.35], [20.0, -13.25], [20.25, -13.35], [20.5, -13.25], [20.75, -13.35], [21.0, -13.25], [21.53, -13.47], [21.68, -13.82], [22.03, -13.97], [22.25, -14.5], [22.15, -14.75], [22.25, -15.0], [22.03, -15.53], [21.68, -15.68], [21.53, -16.03], [21.0, -16.25], [20.47, -16.03], [20.32, -15.68], [20.25, -15.65], [20.0, -15.75], [19.75, -15.65], [19.5, -15.75], [19.25, -15.65], [19.0, -15.75], [18.47, -15.53], [18.25, -15.0], [18.35, -14.75], [18.25, -14.5], [18.47, -13.97]]]]}, "2024-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.35, -14.25], [18.25, -14.0], [18.47, -13.47], [19.0, -13.25], [19.25, -13.35], [19.32, -13.32], [19.47, -12.97], [20.0, -12.75], [20.53, -12.97], [20.68, -13.32], [20.75, -13.35], [21.0, -13.25], [21.53, -13.47], [21.68, -13.82], [22.03, -13.97], [22.25, -14.5], [22.15, -14.75], [22.25, -15.0], [22.03, -15.53], [21.68, -15.68], [21.53, -16.03], [21.0, -16.25], [20.47, -16.03], [20.32, -15.68], [20.25, -15.65], [20.0, -15.75], [19.75, -15.65], [19.5, -15.75], [19.25, -15.65], [19.0, -15.75], [18.47, -15.53], [18.25, -15.0], [18.35, -14.75], [18.25, -14.5], [18.35, -14.25]]]]}, "2024-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.35, -14.25], [18.25, -14.0], [18.47, -13.47], [19.0, -13.25], [19.25, -13.35], [19.32, -13.32], [19.47, -12.97], [20.0, -12.75], [20.53, -12.97], [20.68, -13.32], [20.75, -13.35], [21.0, -13.25], [21.53, -13.47], [21.68, -13.82], [22.03, -13.97], [22.25, -14.5], [22.15, -14.75], [22.25, -15.0], [22.03, -15.53], [21.68, -15.68], [21.53, -16.03], [21.0, -16.25], [20.47, -16.03], [20.32, -15.68], [20.25, -15.65], [20.0, -15.75], [19.75, -15.65], [19.5, -15.75], [19.25, -15.65], [19.0, -15.75], [18.47, -15.53], [18.25, -15.0], [18.35, -14.75], [18.25, -14.5], [18.35, -14.25]]]]}, "2024-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, -14.53], [18.25, -14.0], [18.47, -13.47], [19.0, -13.25], [19.25, -13.35], [19.32, -13.32], [19.47, -12.97], [20.0, -12.75], [20.53, -12.97], [20.75, -13.5], [20.53, -14.03], [20.18, -14.18], [20.03, -14.53], [19.5, -14.75], [19.25, -14.65], [19.0, -14.75], [18.47, -14.53]]]]}, "2024-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.0, -13.25], [19.53, -13.47], [19.75, -14.0], [19.53, -14.53], [19.0, -14.75], [18.47, -14.53], [18.25, -14.0], [18.47, -13.47], [19.0, -13.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5584307302658544}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.428697332455159}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.520289334857125, 19.157713334082928, 19.446445480926627, 19.120296664323348, 19.163512043090464]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.767992956414673, 18.188757628449196, 18.558835950544733, 18.820977588780636, 19.163512043090464]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4229821822038855, -2.6575729013980607, -2.34632669892661, -1.7904729247492053, -1.6569343369719718]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.044016378825063, -3.5584307302658544, -2.9703204904170093, -2.005594072926442, -1.6569343369719718]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8195321211821456, -2.021885492950522, -1.828364383071031, -1.4630048620734335, -1.3211693918164515]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1293233731774834, -2.500977202351957, -2.336887817054812, -1.5934767584361504, -1.3211693918164515]}}