{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:15.637490", "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": "2017-Feb-26_to_2017-Feb-28_34.0_-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": 2017020000712}, "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": "February 26 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 28 2017"}, "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": 73545.68928324449}, "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": ["Mozambique", "South Africa"]}, "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": -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": 34.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 30.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -24.0], [30.47, -23.47], [30.82, -23.32], [30.85, -23.25], [30.75, -23.0], [30.97, -22.47], [31.5, -22.25], [31.75, -22.35], [32.0, -22.25], [32.25, -22.35], [32.32, -22.32], [32.47, -21.97], [33.0, -21.75], [33.53, -21.97], [33.68, -22.32], [33.75, -22.35], [34.0, -22.25], [34.53, -22.47], [34.75, -23.0], [34.65, -23.25], [34.75, -23.5], [34.65, -23.75], [34.75, -24.0], [34.53, -24.53], [34.0, -24.75], [33.75, -24.65], [33.68, -24.68], [33.65, -24.75], [33.75, -25.0], [33.53, -25.53], [33.0, -25.75], [32.75, -25.65], [32.5, -25.75], [32.0, -25.54], [31.5, -25.75], [30.97, -25.53], [30.75, -25.0], [30.85, -24.75], [30.82, -24.68], [30.47, -24.53], [30.25, -24.0]]]]}, "2017-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -24.0], [30.47, -23.47], [30.82, -23.32], [30.85, -23.25], [30.75, -23.0], [30.97, -22.47], [31.5, -22.25], [31.75, -22.35], [32.0, -22.25], [32.25, -22.35], [32.32, -22.32], [32.47, -21.97], [33.0, -21.75], [33.53, -21.97], [33.68, -22.32], [33.75, -22.35], [34.0, -22.25], [34.53, -22.47], [34.75, -23.0], [34.65, -23.25], [34.75, -23.5], [34.65, -23.75], [34.75, -24.0], [34.53, -24.53], [34.0, -24.75], [33.75, -24.65], [33.68, -24.68], [33.65, -24.75], [33.75, -25.0], [33.53, -25.53], [33.0, -25.75], [32.75, -25.65], [32.5, -25.75], [32.0, -25.54], [31.5, -25.75], [30.97, -25.53], [30.75, -25.0], [30.85, -24.75], [30.82, -24.68], [30.47, -24.53], [30.25, -24.0]]]]}, "2017-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -24.0], [30.47, -23.47], [30.82, -23.32], [30.85, -23.25], [30.75, -23.0], [30.97, -22.47], [31.5, -22.25], [31.75, -22.35], [32.0, -22.25], [32.25, -22.35], [32.32, -22.32], [32.47, -21.97], [33.0, -21.75], [33.53, -21.97], [33.68, -22.32], [33.75, -22.35], [34.0, -22.25], [34.53, -22.47], [34.75, -23.0], [34.65, -23.25], [34.75, -23.5], [34.65, -23.75], [34.75, -24.0], [34.53, -24.53], [34.0, -24.75], [33.75, -24.65], [33.68, -24.68], [33.65, -24.75], [33.75, -25.0], [33.53, -25.53], [33.0, -25.75], [32.75, -25.65], [32.5, -25.75], [32.0, -25.54], [31.5, -25.75], [30.97, -25.53], [30.75, -25.0], [30.85, -24.75], [30.82, -24.68], [30.47, -24.53], [30.25, -24.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7898656244611857}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9549873714024657}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.25287496991757, 23.811914490880213, 23.831163278544125]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.366612452022025, 21.77275610199007, 22.51389376363369]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.640778570126055, -3.1065272367876693, -3.1176563072936725]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9634537877959133, -3.6809009578949485, -3.7898656244611857]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3054700757497133, -1.4918046748819314, -1.4933405761195202]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5401932259435673, -1.6728099632095175, -1.812864155126877]}}