{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:19.062031", "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-Oct-20_to_2025-Oct-24_36.0_-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": 2025100000518}, "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": "October 20 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 24 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 66109.35564511805}, "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"]}, "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": 36.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 35.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[35.32, -22.68], [34.97, -22.53], [34.75, -22.0], [34.97, -21.47], [35.32, -21.32], [35.35, -21.25], [35.25, -21.0], [35.35, 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the boundary of the event at each time step", "value": {"2025-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.47, -23.53], [35.25, -23.0], [35.47, -22.47], [36.0, -22.25], [36.53, -22.47], [36.68, -22.82], [37.03, -22.97], [37.25, -23.5], [37.15, -23.75], [37.25, -24.0], [37.03, -24.53], [36.5, -24.75], [35.97, -24.53], [35.75, -24.0], [35.85, -23.75], [35.82, -23.68], [35.47, -23.53]]]]}, "2025-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.75, -19.5], [34.97, -18.97], [35.32, -18.82], [35.35, -18.75], [35.25, -18.5], [35.47, -17.97], [36.0, -17.75], [36.53, -17.97], [36.75, -18.5], [36.65, -18.75], [36.75, -19.0], [36.65, -19.25], [36.75, -19.5], [36.65, -19.75], [36.75, -20.0], [36.65, -20.25], [36.75, -20.5], [36.65, -20.75], [36.68, -20.82], [37.03, -20.97], [37.25, -21.5], [37.15, -21.75], [37.25, -22.0], [37.15, -22.25], [37.18, -22.32], [37.53, -22.47], [37.75, -23.0], [37.53, -23.53], [37.18, -23.68], [37.15, -23.75], 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"value": [22.291158294677757, 22.629954736883064, 22.850417018282315, 23.191971657492957, 23.313967641194665]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.985250091552757, 21.37630742390951, 22.217961883544945, 22.382745361328148, 23.313967641194665]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3435146785594156, -1.7106555266961798, -1.633090169839556, -1.4170423184047174, -2.3666122106961893]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4537548309250496, -2.9440952283533193, -3.654175696589391, -3.207780299766, -2.3666122106961893]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3646268483978987, -1.7603931713592544, -1.5977046158235326, -1.3534408611115276, -1.2659498497357178]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4196726342450152, -2.100702851482187, -1.9274684802512374, -1.5354478066967348, -1.2659498497357178]}}