{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:31.697277", "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": "2022-Nov-18_to_2022-Nov-24_349.0_15.0"}, "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": 2022110000725}, "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": "November 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 24 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 146329.63933241073}, "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": ["Mali", "Mauritania", "Senegal"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "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": 15.0}, "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": 349.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "349.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 346.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-11.25, 13.35], [-11.5, 13.25], [-11.75, 13.35], [-11.82, 13.32], [-11.97, 12.97], [-12.5, 12.75], [-13.03, 12.97], [-13.18, 13.32], [-13.53, 13.47], [-13.68, 13.82], [-14.03, 13.97], [-14.18, 14.32], [-14.53, 14.47], [-14.75, 15.0], [-14.65, 15.25], [-14.75, 15.5], [-14.53, 16.03], [-14.0, 16.25], [-13.75, 16.15], [-13.5, 16.25], [-13.25, 16.15], [-13.0, 16.25], [-12.75, 16.15], [-12.68, 16.18], [-12.53, 16.53], [-12.18, 16.68], [-12.15, 16.75], [-12.25, 17.0], [-12.03, 17.53], [-11.5, 17.75], [-10.97, 17.53], [-10.82, 17.18], [-10.47, 17.03], [-10.32, 16.68], [-9.97, 16.53], [-9.82, 16.18], [-9.75, 16.15], [-9.5, 16.25], [-8.97, 16.03], [-8.82, 15.68], [-8.47, 15.53], [-8.25, 15.0], [-8.35, 14.75], [-8.25, 14.5], [-8.35, 14.25], [-8.25, 14.0], [-8.47, 13.47], [-8.82, 13.32], [-8.97, 12.97], [-9.5, 12.75], [-10.03, 12.97], [-10.18, 13.32], [-10.25, 13.35], [-10.5, 13.25], [-10.75, 13.35], [-11.0, 13.25], [-11.25, 13.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-14.75, 15.5], [-14.529999999999973, 16.03], [-14.0, 16.25], [-13.75, 16.15], [-13.5, 16.25], [-13.25, 16.15], [-13.0, 16.25], [-12.75, 16.15], [-12.680000000000007, 16.18], [-12.529999999999973, 16.53], [-12.180000000000007, 16.68], [-12.149999999999977, 16.75], [-12.25, 17.0], [-12.029999999999973, 17.53], [-11.5, 17.75], [-10.970000000000027, 17.53], [-10.819999999999993, 17.18], [-10.470000000000027, 17.03], [-10.319999999999993, 16.68], [-9.970000000000027, 16.53], [-9.819999999999993, 16.18], [-9.75, 16.15], [-9.5, 16.25], [-8.970000000000027, 16.03], [-8.819999999999993, 15.68], [-8.470000000000027, 15.53], [-8.25, 15.0], [-8.350000000000023, 14.75], [-8.25, 14.5], [-8.350000000000023, 14.25], [-8.25, 14.0], [-8.470000000000027, 13.47], [-8.819999999999993, 13.32], [-8.970000000000027, 12.97], [-9.5, 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