{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:06.812132", "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": "2017-Oct-05_to_2017-Oct-07_33.0_21.5"}, "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": 2017100000196}, "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 05 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 07 2017"}, "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": 157460.90375786243}, "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": ["Egypt", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 21.5}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 29.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.82, 21.18], [29.85, 21.25], [29.75, 21.5], [29.97, 22.03], 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"2017-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.82, 21.18], [29.85, 21.25], [29.75, 21.5], [29.97, 22.03], [30.32, 22.18], [30.47, 22.53], [31.0, 22.75], [31.25, 22.65], [31.32, 22.68], [31.47, 23.03], [31.82, 23.18], [31.85, 23.25], [31.75, 23.5], [31.97, 24.03], [32.32, 24.18], [32.35, 24.25], [32.25, 24.5], [32.47, 25.03], [32.82, 25.18], [32.97, 25.53], [33.5, 25.75], [33.75, 25.65], [34.0, 25.75], [34.53, 25.53], [34.75, 25.0], [34.65, 24.75], [34.68, 24.68], [35.03, 24.53], [35.25, 24.0], [35.15, 23.75], [35.25, 23.5], [35.03, 22.97], [34.68, 22.82], [34.63, 22.7], [35.03, 22.53], [35.25, 22.0], [35.03, 21.47], [34.5, 21.25], [34.25, 21.35], [34.18, 21.32], [34.15, 21.25], [34.25, 21.0], [34.15, 20.75], [34.25, 20.5], [34.03, 19.97], [33.5, 19.75], [33.25, 19.85], [33.0, 19.75], [32.5, 19.96], [32.0, 19.75], [31.75, 19.85], [31.68, 19.82], [31.53, 19.47], [31.0, 19.25], [30.75, 19.35], [30.5, 19.25], [30.25, 19.35], [30.0, 19.25], [29.75, 19.35], [29.5, 19.25], [28.97, 19.47], [28.75, 20.0], [28.97, 20.53], [29.32, 20.68], [29.47, 21.03], [29.82, 21.18]]]]}, "2017-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.82, 21.18], [29.85, 21.25], [29.75, 21.5], [29.97, 22.03], [30.32, 22.18], [30.47, 22.53], [31.0, 22.75], [31.25, 22.65], [31.32, 22.68], [31.47, 23.03], [31.82, 23.18], [31.85, 23.25], [31.75, 23.5], [31.97, 24.03], [32.32, 24.18], [32.35, 24.25], [32.25, 24.5], [32.47, 25.03], [32.82, 25.18], [32.97, 25.53], [33.5, 25.75], [33.75, 25.65], [34.0, 25.75], [34.53, 25.53], [34.75, 25.0], [34.65, 24.75], [34.68, 24.68], [35.03, 24.53], [35.25, 24.0], [35.15, 23.75], [35.25, 23.5], [35.03, 22.97], [34.68, 22.82], [34.63, 22.7], [35.03, 22.53], [35.25, 22.0], [35.03, 21.47], [34.5, 21.25], [34.25, 21.35], [34.18, 21.32], [34.15, 21.25], [34.25, 21.0], [34.15, 20.75], [34.25, 20.5], [34.03, 19.97], [33.5, 19.75], [33.25, 19.85], [33.0, 19.75], [32.5, 19.96], [32.0, 19.75], [31.75, 19.85], [31.68, 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[-2.6735809093373613, -3.6781296460581, -2.631979699941954]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.2585345759403026, -4.496697394600915, -3.22215481283132]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4912652249140719, -2.1082015102175, -1.4941027020595865]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6796574624801273, -2.5380961401775726, -1.7785142658030264]}}