{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:39.677593", "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-Oct-28_to_2022-Nov-05_356.0_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": 2022100001040}, "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 28 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 05 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 92744.68286453342}, "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"]}, "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": 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": 356.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "356.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 357.0}, "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": 15.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-6.5, 16.25], [-6.0, 16.04], [-5.5, 16.25], [-5.25, 16.15], [-5.0, 16.25], [-4.5, 16.04], [-4.0, 16.25], [-3.75, 16.15], [-3.5, 16.25], [-2.97, 16.03], [-2.82, 15.68], [-2.47, 15.53], [-2.25, 15.0], [-2.47, 14.47], [-3.0, 14.25], [-3.25, 14.35], [-3.32, 14.32], [-3.47, 13.97], [-3.82, 13.82], [-3.97, 13.47], [-4.5, 13.25], [-4.75, 13.35], [-4.82, 13.32], [-4.97, 12.97], [-5.5, 12.75], [-5.75, 12.85], [-6.0, 12.75], [-6.25, 12.85], [-6.5, 12.75], [-6.75, 12.85], [-7.0, 12.75], [-7.25, 12.85], [-7.5, 12.75], [-8.03, 12.97], [-8.25, 13.5], [-8.15, 13.75], [-8.25, 14.0], [-8.03, 14.53], [-7.62, 14.7], [-7.75, 15.0], [-7.53, 15.53], [-7.18, 15.68], [-7.03, 16.03], [-6.5, 16.25]]]]}}, "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": {"2022-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.25, 15.0], [-5.029999999999973, 15.53], [-4.680000000000007, 15.68], 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