{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:41.444234", "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": "2026-Mar-02_to_2026-Mar-05_336.5_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": 2026030000131}, "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": "March 02 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 05 2026"}, "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": 108140.52910978551}, "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": ["Cabo Verde"]}, "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": ["Atlantic Ocean"]}, "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": 336.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "336.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 332.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 337.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-25.03, 15.03], [-24.68, 15.18], [-24.53, 15.53], [-24.18, 15.68], [-24.03, 16.03], [-23.68, 16.18], [-23.53, 16.53], [-23.0, 16.75], [-22.47, 16.53], [-22.25, 16.0], [-22.35, 15.75], [-22.25, 15.5], [-22.35, 15.25], [-22.25, 15.0], [-22.35, 14.75], [-22.25, 14.5], [-22.47, 13.97], [-22.82, 13.82], [-22.97, 13.47], [-23.32, 13.32], [-23.46, 13.0], [-23.25, 12.5], [-23.47, 11.97], [-23.82, 11.82], [-23.97, 11.47], [-24.5, 11.25], [-25.03, 11.47], [-25.18, 11.82], [-25.25, 11.85], [-25.32, 11.82], [-25.47, 11.47], [-26.0, 11.25], [-26.25, 11.35], [-26.5, 11.25], [-26.75, 11.35], [-27.0, 11.25], [-27.53, 11.47], [-27.75, 12.0], [-27.65, 12.25], [-27.75, 12.5], [-27.65, 12.75], [-27.75, 13.0], [-27.53, 13.53], [-27.0, 13.75], [-26.7, 13.62], [-26.65, 13.75], [-26.75, 14.0], [-26.53, 14.53], [-26.0, 14.75], [-25.75, 14.65], [-25.5, 14.75], [-25.25, 14.65], [-25.18, 14.68], [-25.03, 15.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-27.75, 12.5], [-27.649999999999977, 12.75], [-27.75, 13.0], [-27.529999999999973, 13.53], [-27.0, 13.75], [-26.69999999999999, 13.62], [-26.649999999999977, 13.75], [-26.75, 14.0], [-26.529999999999973, 14.53], [-26.0, 14.75], [-25.75, 14.65], [-25.5, 14.75], [-25.25, 14.65], [-25.180000000000007, 14.68], [-25.029999999999973, 15.03], [-24.680000000000007, 15.18], [-24.529999999999973, 15.53], [-24.180000000000007, 15.68], [-24.029999999999973, 16.03], [-23.680000000000007, 16.18], [-23.529999999999973, 16.53], [-23.0, 16.75], [-22.470000000000027, 16.53], [-22.25, 16.0], [-22.350000000000023, 15.75], [-22.25, 15.5], [-22.350000000000023, 15.25], [-22.25, 15.0], [-22.350000000000023, 14.75], [-22.25, 14.5], [-22.470000000000027, 13.97], [-22.819999999999993, 13.82], [-22.970000000000027, 13.47], [-23.319999999999993, 13.32], [-23.45999999999998, 13.0], [-23.25, 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.487134270725586, -1.428739742822057, -1.2198994047221765, -1.2283482085106503]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8341951748781185, -1.6857183064482228, -1.6831153204143448, -1.4378451668676462]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.525449263469405, -1.484987106899927, -1.287750717790311, -1.3269114157954272]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.697801405337896, -1.5691338710762348, -1.5737749334442712, -1.4268291317595896]}}