{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:51:05.854660", "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-Feb-25_to_2024-Mar-01_31.0_-26.5"}, "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": 2024020000537}, "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 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 01 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 716723.1543736953}, "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": ["Eswatini", "Mozambique", "South Africa", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "S.Indian-Ocean", "Southern-Ocean", "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": ["Indian Ocean", "Mozambique Channel"]}, "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": -26.5}, "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": 31.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "31.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -37.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, -35.25], [22.75, -35.0], [22.97, -34.47], [23.32, -34.32], [23.47, -33.97], [23.82, -33.82], [23.85, -33.75], [23.75, -33.5], [23.97, -32.97], [24.32, -32.82], [24.47, -32.47], [25.0, -32.25], [25.3, -32.37], [25.47, -31.97], [26.0, -31.75], [26.25, -31.85], [26.5, -31.75], [26.75, -31.85], [27.0, -31.75], [27.53, -31.97], [27.75, -32.5], [27.63, -32.8], [27.75, -32.85], [28.0, -32.75], [28.25, -32.85], [28.5, -32.75], [29.03, -32.97], [29.25, -33.5], [29.03, -34.03], [28.68, -34.18], [28.53, -34.53], [28.18, -34.68], [28.15, -34.75], [28.25, -35.0], [28.04, -35.5], [28.25, -36.0], [28.15, -36.25], [28.18, -36.32], [28.53, -36.47], [28.68, -36.82], [29.03, -36.97], [29.25, -37.5], [29.03, -38.03], [28.5, -38.25], [28.25, -38.15], [28.0, -38.25], [27.75, -38.15], [27.5, -38.25], [27.25, -38.15], [27.0, -38.25], [26.47, -38.03], [26.32, -37.68], [26.25, -37.65], [26.0, -37.75], [25.75, -37.65], [25.5, -37.75], [24.97, -37.53], [24.82, -37.18], [24.75, -37.15], [24.5, -37.25], [24.25, -37.15], [24.0, -37.25], [23.47, -37.03], [23.32, -36.68], [22.97, -36.53], [22.75, -36.0], [22.85, -35.75], [22.75, -35.5], [22.85, -35.25]]]]}, "2024-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, -35.25], [22.75, -35.0], [22.97, -34.47], [23.32, -34.32], [23.47, -33.97], [23.82, -33.82], [23.85, -33.75], [23.75, -33.5], [23.97, -32.97], [24.32, -32.82], [24.47, -32.47], [25.0, -32.25], [25.3, -32.37], [25.47, -31.97], [26.0, -31.75], [26.25, -31.85], [26.5, -31.75], [26.75, -31.85], [27.0, -31.75], [27.53, -31.97], [27.75, -32.5], [27.63, -32.8], [27.75, -32.85], [28.0, -32.75], [28.25, -32.85], [28.5, -32.75], [28.75, -32.85], [28.82, -32.82], [28.97, -32.47], [29.32, -32.32], [29.35, -32.25], [29.25, -32.0], [29.35, -31.75], [29.25, -31.5], [29.38, -31.2], [28.97, -31.03], [28.75, -30.5], [28.85, -30.25], [28.75, -30.0], [28.85, -29.75], [28.75, -29.5], [28.85, -29.25], [28.82, -29.18], [28.47, -29.03], [28.25, -28.5], [28.47, -27.97], [28.82, -27.82], [28.85, -27.75], [28.75, -27.5], [28.97, -26.97], [29.32, -26.82], [29.35, -26.75], [29.25, -26.5], [29.47, -25.97], [29.82, -25.82], [29.97, -25.47], [30.32, -25.32], [30.35, -25.25], [30.25, -25.0], [30.47, -24.47], [31.0, -24.25], [31.53, -24.47], [31.7, -24.87], [32.0, -24.75], [32.25, -24.85], [32.5, -24.75], [32.75, -24.85], [33.0, -24.75], [33.53, -24.97], [33.75, -25.5], [33.53, -26.03], [33.18, -26.18], [33.15, -26.25], [33.25, -26.5], [33.15, -26.75], [33.25, -27.0], [33.15, -27.25], [33.25, -27.5], [33.15, -27.75], [33.25, -28.0], [33.15, -28.25], [33.18, -28.32], [33.25, -28.35], [33.5, -28.25], [33.75, -28.35], [34.0, -28.25], [34.53, -28.47], [34.68, -28.82], [35.03, -28.97], [35.18, -29.32], [35.53, -29.47], [35.75, -30.0], [35.65, -30.25], [35.75, -30.5], [35.65, -30.75], [35.75, -31.0], [35.65, -31.25], [35.75, -31.5], [35.53, -32.03], [35.18, -32.18], [35.15, -32.25], [35.25, -32.5], [35.15, -32.75], [35.25, -33.0], [35.15, -33.25], [35.25, -33.5], [35.03, -34.03], [34.68, -34.18], [34.53, -34.53], [34.0, -34.75], [33.75, -34.65], [33.5, -34.75], [33.25, -34.65], [33.0, -34.75], [32.75, -34.65], [32.68, -34.68], [32.53, -35.03], [32.0, -35.25], [31.75, -35.15], [31.5, -35.25], [31.25, -35.15], [31.0, -35.25], [30.75, -35.15], [30.5, -35.25], [29.97, -35.03], [29.82, -34.68], [29.75, -34.65], [29.5, -34.75], [29.25, -34.65], [29.0, -34.75], [28.5, -34.54], [28.18, -34.68], [28.15, -34.75], [28.25, -35.0], [28.04, -35.5], [28.25, -36.0], [28.15, -36.25], [28.18, -36.32], [28.53, -36.47], [28.68, -36.82], [29.03, -36.97], [29.25, -37.5], [29.03, -38.03], [28.5, -38.25], [28.25, -38.15], [28.0, -38.25], [27.75, -38.15], [27.5, -38.25], [27.25, -38.15], [27.0, -38.25], [26.47, -38.03], [26.32, -37.68], [26.25, -37.65], [26.0, -37.75], [25.75, -37.65], [25.5, -37.75], [24.97, -37.53], [24.82, -37.18], [24.75, -37.15], [24.5, -37.25], [24.25, -37.15], [24.0, -37.25], [23.47, -37.03], [23.32, -36.68], [22.97, -36.53], [22.75, -36.0], [22.85, -35.75], [22.75, -35.5], [22.85, -35.25]]]]}, "2024-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, -35.25], [22.75, -35.0], [22.97, -34.47], [23.32, -34.32], [23.47, -33.97], [23.82, -33.82], [23.85, -33.75], [23.75, -33.5], [23.97, -32.97], [24.32, -32.82], [24.47, -32.47], [25.0, -32.25], [25.3, -32.37], [25.47, -31.97], [26.0, -31.75], [26.25, -31.85], [26.5, -31.75], [26.75, -31.85], [27.0, -31.75], [27.53, -31.97], [27.75, -32.5], [27.63, -32.8], [27.75, -32.85], [28.0, -32.75], [28.25, -32.85], [28.5, -32.75], [28.75, -32.85], [28.82, -32.82], [28.97, -32.47], [29.32, -32.32], [29.35, -32.25], [29.25, -32.0], [29.35, -31.75], [29.25, -31.5], [29.38, -31.2], [28.97, -31.03], [28.75, -30.5], [28.85, -30.25], [28.75, -30.0], [28.85, -29.75], [28.75, -29.5], [28.85, -29.25], [28.82, -29.18], [28.47, -29.03], [28.25, -28.5], [28.47, -27.97], [28.82, -27.82], [28.85, -27.75], [28.75, -27.5], [28.97, -26.97], [29.32, -26.82], [29.35, -26.75], [29.25, -26.5], [29.47, -25.97], [29.82, -25.82], [29.97, -25.47], [30.32, -25.32], [30.35, -25.25], [30.25, -25.0], [30.43, -24.57], [30.0, -24.75], [29.47, -24.53], [29.25, -24.0], [29.35, -23.75], [29.32, -23.68], [28.97, -23.53], [28.75, -23.0], [28.97, -22.47], [29.32, -22.32], [29.47, -21.97], [30.0, -21.75], [30.25, -21.85], [30.5, -21.75], [30.75, -21.85], [31.0, -21.75], [31.53, -21.97], [31.68, -22.32], [31.75, -22.35], [32.0, -22.25], [32.53, -22.47], [32.75, -23.0], [32.65, -23.25], [32.68, -23.32], [32.8, -23.37], [32.97, -22.97], [33.5, -22.75], [34.03, -22.97], [34.18, -23.32], [34.53, -23.47], [34.75, -24.0], [34.65, -24.25], [34.75, -24.5], [34.53, -25.03], [34.18, -25.18], [34.03, -25.53], [33.68, -25.68], [33.53, -26.03], [33.18, -26.18], [33.15, -26.25], [33.25, -26.5], [33.15, -26.75], [33.25, -27.0], [33.15, -27.25], [33.25, -27.5], [33.15, -27.75], [33.25, -28.0], [33.15, -28.25], [33.18, -28.32], [33.25, -28.35], [33.5, -28.25], [33.75, -28.35], [34.0, -28.25], [34.53, -28.47], [34.68, -28.82], [35.03, -28.97], [35.18, -29.32], [35.53, -29.47], [35.75, -30.0], [35.65, -30.25], [35.75, -30.5], [35.65, -30.75], [35.75, -31.0], [35.65, -31.25], [35.75, -31.5], [35.53, -32.03], [35.18, -32.18], [35.15, -32.25], [35.25, -32.5], [35.15, -32.75], [35.25, -33.0], [35.15, -33.25], [35.25, -33.5], [35.03, -34.03], [34.68, -34.18], [34.53, -34.53], [34.0, -34.75], [33.75, -34.65], [33.5, -34.75], [33.25, -34.65], [33.0, -34.75], [32.75, -34.65], [32.68, -34.68], [32.53, -35.03], [32.0, -35.25], [31.75, -35.15], [31.5, -35.25], [31.25, -35.15], [31.0, -35.25], [30.75, -35.15], [30.5, -35.25], [29.97, -35.03], [29.82, -34.68], [29.75, -34.65], [29.5, -34.75], [29.25, -34.65], [29.0, -34.75], [28.5, -34.54], [28.18, -34.68], [28.15, -34.75], [28.25, -35.0], [28.04, -35.5], [28.25, -36.0], [28.15, -36.25], [28.18, -36.32], [28.53, -36.47], [28.68, -36.82], [29.03, -36.97], [29.25, -37.5], [29.03, -38.03], [28.5, -38.25], [28.25, -38.15], [28.0, -38.25], [27.75, -38.15], [27.5, -38.25], [27.25, -38.15], [27.0, -38.25], [26.47, -38.03], [26.32, -37.68], [26.25, -37.65], [26.0, -37.75], [25.75, -37.65], [25.5, -37.75], [24.97, -37.53], [24.82, -37.18], [24.75, -37.15], [24.5, -37.25], [24.25, -37.15], [24.0, -37.25], [23.47, -37.03], [23.32, -36.68], [22.97, -36.53], [22.75, -36.0], [22.85, -35.75], [22.75, -35.5], [22.85, -35.25]], [[31.25, -24.0], [31.35, -23.75], [31.32, -23.68], [31.25, -23.65], [31.0, -23.75], [30.75, -23.65], [30.68, -23.68], [30.65, -23.75], [30.75, -24.0], [30.57, -24.43], [31.0, -24.25], [31.3, -24.37], [31.35, -24.25], [31.25, -24.0]]]]}, "2024-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, -32.97], [28.82, -32.82], [28.97, -32.47], [29.32, -32.32], [29.35, -32.25], [29.25, -32.0], [29.35, -31.75], [29.25, -31.5], [29.38, -31.2], [28.97, -31.03], [28.75, -30.5], [28.85, -30.25], [28.75, -30.0], [28.85, -29.75], [28.75, -29.5], [28.85, -29.25], [28.82, -29.18], [28.47, -29.03], [28.25, -28.5], [28.47, -27.97], [28.82, -27.82], [28.85, -27.75], [28.75, -27.5], [28.97, -26.97], [29.32, -26.82], [29.35, -26.75], [29.25, -26.5], [29.47, -25.97], [29.82, -25.82], [29.97, -25.47], [30.32, -25.32], [30.35, -25.25], [30.25, -25.0], [30.43, -24.57], [30.0, -24.75], [29.47, -24.53], [29.25, -24.0], [29.35, -23.75], [29.32, -23.68], [28.97, -23.53], [28.75, -23.0], [28.97, -22.47], [29.32, -22.32], [29.47, -21.97], [29.82, -21.82], [29.97, -21.47], [30.32, -21.32], [30.47, -20.97], [31.0, -20.75], [31.53, -20.97], [31.68, -21.32], [32.03, -21.47], [32.25, -22.0], [32.15, -22.25], [32.18, -22.32], [32.53, -22.47], [32.75, -23.0], [32.65, -23.25], [32.68, -23.32], [32.8, -23.37], [32.97, -22.97], [33.5, -22.75], [34.03, -22.97], [34.18, -23.32], [34.53, -23.47], [34.75, -24.0], [34.65, -24.25], [34.75, -24.5], [34.53, -25.03], [34.18, -25.18], [34.03, -25.53], [33.68, -25.68], [33.53, -26.03], [33.18, -26.18], [33.15, -26.25], [33.25, -26.5], [33.15, -26.75], [33.25, -27.0], [33.15, -27.25], [33.25, -27.5], [33.15, -27.75], [33.25, -28.0], [33.15, -28.25], [33.18, -28.32], [33.25, -28.35], [33.5, -28.25], [33.75, -28.35], [34.0, -28.25], [34.53, -28.47], [34.68, -28.82], [35.03, -28.97], [35.18, -29.32], [35.53, -29.47], [35.75, -30.0], [35.65, -30.25], [35.75, -30.5], [35.65, -30.75], [35.75, -31.0], [35.65, -31.25], [35.75, -31.5], [35.53, -32.03], [35.18, -32.18], [35.15, -32.25], [35.25, -32.5], [35.15, -32.75], [35.25, -33.0], [35.15, -33.25], [35.25, -33.5], [35.03, -34.03], [34.68, -34.18], [34.53, -34.53], [34.0, -34.75], [33.75, -34.65], [33.5, -34.75], [33.25, -34.65], [33.0, -34.75], [32.75, -34.65], [32.68, -34.68], [32.53, -35.03], [32.0, -35.25], [31.75, -35.15], [31.5, -35.25], [31.25, -35.15], [31.0, -35.25], [30.75, -35.15], [30.5, -35.25], [29.97, -35.03], [29.82, -34.68], [29.75, -34.65], [29.5, -34.75], [29.25, -34.65], [29.0, -34.75], [28.47, -34.53], [28.25, -34.0], [28.35, -33.75], [28.25, -33.5], [28.47, -32.97]], [[31.25, -24.0], [31.35, -23.75], [31.32, -23.68], [31.25, -23.65], [31.0, -23.75], [30.75, -23.65], [30.68, -23.68], [30.65, -23.75], [30.75, -24.0], [30.57, -24.43], [31.0, -24.25], [31.3, -24.37], [31.35, -24.25], [31.25, -24.0]]]]}, "2024-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.53, -27.03], [31.0, -27.25], [30.75, -27.15], [30.5, -27.25], [30.25, -27.15], [30.0, -27.25], [29.47, -27.03], [29.25, -26.5], [29.47, -25.97], [30.0, -25.75], [30.25, -25.85], [30.5, -25.75], [30.75, -25.85], [31.0, -25.75], [31.53, -25.97], [31.75, -26.5], [31.53, -27.03]]], [[[28.97, -22.47], [29.32, -22.32], [29.47, -21.97], [29.82, -21.82], [29.97, -21.47], [30.32, -21.32], [30.47, -20.97], [31.0, -20.75], [31.53, -20.97], [31.68, -21.32], [32.03, -21.47], [32.25, -22.0], [32.15, -22.25], [32.18, -22.32], [32.53, -22.47], [32.75, -23.0], [32.65, -23.25], [32.68, -23.32], [32.8, -23.37], [32.97, -22.97], [33.5, -22.75], [34.03, -22.97], [34.18, -23.32], [34.53, -23.47], [34.75, -24.0], [34.65, -24.25], [34.75, -24.5], [34.53, -25.03], [34.18, -25.18], [34.03, -25.53], [33.68, -25.68], [33.53, -26.03], [33.18, -26.18], [33.15, -26.25], [33.25, -26.5], [33.15, -26.75], [33.25, -27.0], [33.03, -27.53], [32.5, -27.75], [31.97, -27.53], [31.75, -27.0], [31.85, -26.75], [31.75, -26.5], [31.85, -26.25], [31.75, -26.0], [31.85, -25.75], [31.75, -25.5], [31.85, -25.25], [31.82, -25.18], [31.7, -25.12], [31.53, -25.53], [31.0, -25.75], [30.47, -25.53], [30.25, -25.0], [30.43, -24.57], [30.0, -24.75], [29.47, -24.53], [29.25, -24.0], [29.35, -23.75], [29.32, -23.68], [28.97, -23.53], [28.75, -23.0], [28.97, -22.47]], [[31.0, -24.25], [31.3, -24.37], [31.35, -24.25], [31.25, -24.0], [31.35, -23.75], [31.32, -23.68], [31.25, -23.65], [31.0, -23.75], [30.75, -23.65], [30.68, -23.68], [30.65, -23.75], [30.75, -24.0], [30.57, -24.43], [31.0, -24.25]]]]}, "2024-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.97, -21.47], [30.32, -21.32], [30.47, -20.97], [31.0, -20.75], [31.53, -20.97], [31.68, -21.32], [32.03, -21.47], [32.25, -22.0], [32.15, -22.25], [32.25, -22.5], [32.03, -23.03], [31.5, -23.25], [31.25, -23.15], [31.0, -23.25], [30.75, -23.15], [30.5, -23.25], [29.97, -23.03], [29.75, -22.5], [29.85, -22.25], [29.75, -22.0], [29.97, -21.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.373173044092482}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.985938763995218}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.825907465183207, 19.60236328665809, 19.89657410825498, 21.113121459719537, 22.159313693088677, 23.24344437689018]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.75425766776516, 10.872123007370135, 11.306682844825048, 13.111691414314635, 15.539039502994058, 22.73697658962965]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.8136650610309974, -3.210125115959793, -3.168832178994983, -2.5486310409286634, -2.9210876700729513, -2.8071543229997524]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.221801876086033, -7.373173044092482, -6.339683489936647, -4.437850546031143, -4.612747608675136, -3.2609204016657145]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7161361975391398, -2.0574807328000015, -1.9975555708601014, -1.6434357133429585, -1.4652879104095553, -1.1648490056083778]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3928942900504495, -2.817240510216434, -2.973614107753683, -2.258864569831467, -1.8749008805659433, -1.334806836803301]}}