{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:11:20.533833", "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": "2020-Feb-10_to_2020-Feb-13_24.5_13.5"}, "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": 2020020000406}, "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 10 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 13 2020"}, "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": 57143.23691467105}, "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": ["Sudan"]}, "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": 13.5}, "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": 24.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[22.75, 12.5], [22.854, 12.75], [22.75, 13.0], [22.97, 13.53], [23.5, 13.75], [22.97, 13.97], [22.75, 14.5], [22.97, 15.03], [23.5, 15.25], [23.75, 15.146], [24.0, 15.25], [24.25, 15.146], [24.5, 15.25], [25.03, 15.03], [25.177, 14.677], [25.25, 14.646], [25.323, 14.677], [25.47, 15.03], [26.0, 15.25], [26.53, 15.03], [26.75, 14.5], [26.646, 14.25], [26.75, 14.0], [26.53, 13.47], [26.177, 13.323], [26.03, 12.97], [25.5, 12.75], [25.25, 12.854], [25.125, 12.802], [25.25, 12.5], [25.03, 11.97], [24.625, 11.802], [24.75, 11.5], [24.53, 10.97], [24.0, 10.75], [23.75, 10.854], [23.5, 10.75], [22.97, 10.97], [22.75, 11.5], [22.854, 11.75], [22.75, 12.0], [22.854, 12.25], [22.75, 12.5]], [[23.75, 13.646], [23.823, 13.677], [23.854, 13.75], [23.823, 13.823], [23.75, 13.854], [23.5, 13.75], [23.75, 13.646]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-10T11:30:00.000000000": {"type": "Polygon", 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t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5338439166749052, -2.078654051931107, -2.031300142707908, -1.54524107891003]}}