{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:29.987206", "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": "2018-Nov-09_to_2018-Nov-11_34.5_17.5"}, "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": 2018110000357}, "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 09 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 11 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 279865.8127014429}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "Sahara"]}, "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": 17.5}, "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": 34.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.85, 15.25], [30.75, 15.5], [30.96, 16.0], [30.75, 16.5], 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[31.5, 13.75], [30.97, 13.97], [30.75, 14.5], [30.85, 14.75], [30.75, 15.0], [30.85, 15.25]]]]}, "2018-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.85, 15.25], [30.75, 15.5], [30.96, 16.0], [30.75, 16.5], [30.97, 17.03], [31.32, 17.18], [31.35, 17.25], [31.25, 17.5], [31.35, 17.75], [31.25, 18.0], [31.35, 18.25], [31.25, 18.5], [31.35, 18.75], [31.25, 19.0], [31.47, 19.53], [31.82, 19.68], [31.85, 19.75], [31.75, 20.0], [31.85, 20.25], [31.75, 20.5], [31.97, 21.03], [32.5, 21.25], [32.8, 21.13], [32.97, 21.53], [33.5, 21.75], [33.75, 21.65], [34.0, 21.75], [34.25, 21.65], [34.5, 21.75], [35.03, 21.53], [35.25, 21.0], [35.15, 20.75], [35.25, 20.5], [35.15, 20.25], [35.18, 20.18], [35.53, 20.03], [35.68, 19.68], [36.03, 19.53], [36.25, 19.0], [36.15, 18.75], [36.18, 18.68], [36.53, 18.53], [36.75, 18.0], [36.65, 17.75], [36.75, 17.5], [36.65, 17.25], [36.75, 17.0], [36.53, 16.47], [36.18, 16.32], [36.03, 15.97], [35.68, 15.82], [35.53, 15.47], [35.18, 15.32], 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24.59722772678714]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.416458016782087, 21.100763891832344, 21.28912304928639]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.4290515729507955, -3.8930547981622006, -3.3673682476859317]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.232530890259227, -4.643727007768575, -4.2628625332415595]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8464863794209376, -2.115562382184368, -1.8567558379316413]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.450113970906746, -2.986795953286332, -2.5756162221453165]}}