{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:07.364561", "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": "2015-Nov-02_to_2015-Nov-05_23.5_-23.0"}, "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": 2015110000135}, "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": "November 02 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 05 2015"}, "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": 65783.61915189172}, "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"]}, "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": -23.0}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.25}, "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": -24.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.93, -22.07], [22.5, -22.25], [21.97, -22.03], [21.75, -21.5], [21.97, -20.97], [22.5, -20.75], [23.03, -20.97], [23.25, -21.5], [23.07, -21.93], [23.5, -21.75], [23.75, -21.85], [24.0, -21.75], [24.53, -21.97], [24.68, -22.32], [25.03, -22.47], [25.25, -23.0], [25.15, -23.25], [25.18, -23.32], [25.53, -23.47], [25.75, -24.0], [25.65, -24.25], [25.75, -24.5], [25.53, -25.03], [25.0, -25.25], [24.47, -25.03], [24.32, -24.68], [23.97, -24.53], [23.75, -24.0], [23.85, -23.75], [23.82, -23.68], [23.75, -23.65], [23.5, -23.75], [22.97, -23.53], [22.75, -23.0], [22.85, -22.75], [22.75, -22.5], [22.93, -22.07]]]]}, "2015-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.25, -20.5], [22.47, -19.97], [23.0, -19.75], [23.25, -19.85], [23.5, -19.75], [24.03, -19.97], [24.18, -20.32], [24.53, -20.47], [24.75, -21.0], [24.65, -21.25], [24.68, -21.32], [25.03, -21.47], [25.18, -21.82], [25.53, -21.97], [25.75, -22.5], [25.65, -22.75], [25.75, -23.0], [25.54, -23.5], [25.75, -24.0], [25.65, -24.25], [25.75, -24.5], [25.53, -25.03], [25.0, -25.25], [24.47, -25.03], [24.32, -24.68], [23.97, -24.53], [23.75, -24.0], [23.85, -23.75], [23.82, -23.68], [23.75, -23.65], [23.5, -23.75], [22.97, -23.53], [22.75, -23.0], [22.85, -22.75], [22.75, -22.5], [22.88, -22.2], [22.75, -22.15], [22.5, -22.25], [21.97, -22.03], [21.75, -21.5], [21.97, -20.97], [22.32, -20.82], [22.35, -20.75], [22.25, -20.5]]]]}, "2015-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.25, -20.5], [22.47, -19.97], [23.0, -19.75], [23.25, -19.85], [23.5, -19.75], [24.03, -19.97], [24.18, -20.32], [24.53, -20.47], [24.75, -21.0], [24.65, -21.25], [24.68, -21.32], [25.03, -21.47], [25.18, -21.82], [25.53, -21.97], [25.75, -22.5], [25.65, -22.75], [25.75, -23.0], [25.54, -23.5], [25.75, -24.0], [25.65, -24.25], [25.75, -24.5], [25.53, -25.03], [25.0, -25.25], [24.47, -25.03], [24.32, -24.68], [23.97, -24.53], [23.75, -24.0], [23.85, -23.75], [23.82, -23.68], [23.75, -23.65], [23.5, -23.75], [22.97, -23.53], [22.75, -23.0], [22.85, -22.75], [22.75, -22.5], [22.88, -22.2], [22.75, -22.15], [22.5, -22.25], [21.97, -22.03], [21.75, -21.5], [21.97, -20.97], [22.32, -20.82], [22.35, -20.75], [22.25, -20.5]]]]}, "2015-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.35, -20.75], [22.25, -20.5], [22.47, -19.97], [23.0, -19.75], [23.25, -19.85], [23.5, -19.75], [24.03, -19.97], [24.18, -20.32], [24.53, -20.47], [24.75, -21.0], [24.65, -21.25], [24.68, -21.32], [25.03, -21.47], [25.18, -21.82], [25.53, -21.97], [25.75, -22.5], [25.65, -22.75], [25.75, -23.0], [25.53, -23.53], [25.0, -23.75], [24.47, -23.53], [24.32, -23.18], [23.97, -23.03], [23.82, -22.68], [23.47, -22.53], [23.32, -22.18], [23.25, -22.15], [23.0, -22.25], [22.47, -22.03], [22.25, -21.5], [22.35, -21.25], [22.25, -21.0], [22.35, -20.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.841532625262289}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.450137634514401}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.736097812331025, 21.663456600903828, 22.4417204389203, 22.93427236686034]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.75974591237599, 18.737055766130823, 20.227238365374717, 22.12724974241985]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.318310479844138, -4.979040405927148, -4.168535632415092, -4.114011007783133]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.252428742144787, -5.841532625262289, -4.748300380155968, -4.724951001868021]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4951380521116202, -1.7792655727861852, -1.4646229758885208, -1.430455115450992]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.834695050303107, -2.058536717192611, -1.7111555830796457, -1.648993384337207]}}