{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:28.829091", "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": "2025-May-23_to_2025-May-26_34.0_-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": 2025050000473}, "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": "May 23 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 26 2025"}, "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": 56394.681896735325}, "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": ["Malawi", "Mozambique"]}, "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": -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": 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": 33.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.25}, "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": {"2025-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.85, -14.25], [32.75, -14.0], [32.97, -13.47], [33.5, 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-14.5], [34.65, -14.75], [34.68, -14.82], [35.03, -14.97], [35.25, -15.5], [35.15, -15.75], [35.18, -15.82], [35.25, -15.85], [35.5, -15.75], [36.03, -15.97], [36.25, -16.5], [36.15, -16.75], [36.25, -17.0], [36.15, -17.25], [36.25, -17.5], [36.15, -17.75], [36.25, -18.0], [36.03, -18.53], [35.5, -18.75], [35.25, -18.65], [35.0, -18.75], [34.47, -18.53], [34.32, -18.18], [33.97, -18.03], [33.75, -17.5], [33.85, -17.25], [33.75, -17.0], [33.85, -16.75], [33.75, -16.5], [33.85, -16.25], [33.75, -16.0], [33.85, -15.75], [33.82, -15.68], [33.75, -15.65], [33.5, -15.75], [32.97, -15.53], [32.75, -15.0], [32.85, -14.75], [32.75, -14.5], [32.85, -14.25]]]]}, "2025-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.85, -14.25], [32.75, -14.0], [32.85, -13.75], [32.75, -13.5], [32.97, -12.97], [33.5, -12.75], [34.03, -12.97], [34.25, -13.5], [34.15, -13.75], [34.18, -13.82], [34.53, -13.97], [34.75, -14.5], [34.65, -14.75], [34.68, -14.82], [35.03, -14.97], [35.25, 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anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.337498172393972}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.101776518645124, 18.659499171742254, 18.911834168015844, 17.474144236246786]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.977581278483115, 14.305692291259788, 15.018519337972009, 17.474144236246786]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2535328912471533, -2.5428520494128115, -2.240908041751308, -1.782362051889379]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.555446567534318, -3.282384205096605, -2.7589359646813136, -1.782362051889379]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3643828153172661, -1.5497603372460058, -1.3650157621572105, -1.4060499006783767]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6805325883001754, -2.084664492668417, -1.9477694481984076, -1.4060499006783767]}}