{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:28.569649", "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-Jul-28_to_2024-Jul-31_23.5_-33.5"}, "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": 2024070000720}, "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": "July 28 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 31 2024"}, "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": 78282.04675540568}, "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": ["South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "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": -33.5}, "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": 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": 21.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, -34.03], [26.25, -33.5], [26.47, -32.97], [27.0, 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"MultiPolygon", "coordinates": [[[[21.47, -33.53], [21.25, -33.0], [21.47, -32.47], [22.0, -32.25], [22.25, -32.35], [22.32, -32.32], [22.47, -31.97], [23.0, -31.75], [23.5, -31.96], [24.0, -31.75], [24.25, -31.85], [24.5, -31.75], [24.75, -31.85], [24.82, -31.82], [24.97, -31.47], [25.32, -31.32], [25.35, -31.25], [25.25, -31.0], [25.47, -30.47], [25.82, -30.32], [25.97, -29.97], [26.32, -29.82], [26.47, -29.47], [27.0, -29.25], [27.53, -29.47], [27.75, -30.0], [27.65, -30.25], [27.75, -30.5], [27.53, -31.03], [27.0, -31.25], [27.53, -31.47], [27.75, -32.0], [27.54, -32.5], [27.75, -33.0], [27.53, -33.53], [27.0, -33.75], [26.75, -33.65], [26.68, -33.68], [26.53, -34.03], [26.0, -34.25], [25.75, -34.15], [25.5, -34.25], [25.25, -34.15], [25.0, -34.25], [24.75, -34.15], [24.5, -34.25], [24.25, -34.15], [24.0, -34.25], [23.75, -34.15], [23.5, -34.25], [22.97, -34.03], [22.8, -33.62], [22.5, -33.75], [22.25, -33.65], [22.0, -33.75], [21.47, -33.53]], [[26.75, -31.15], [26.68, -31.18], 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"Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.482844541278496, -5.464192065487964, -5.874442727828921, -5.694698133674024]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4490138015384342, -1.489095534063413, -1.4548080193371538, -1.4302813682262034]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.670905831171113, -2.115792677030612, -1.749139361309095, -1.7772160517536568]}}