{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:04.066279", "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-Jan-28_to_2017-Jan-30_29.0_28.5"}, "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": 2017010000966}, "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": "January 28 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 30 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": 159532.3040548521}, "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"]}, "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": 28.5}, "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": 29.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "29.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 31.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, 29.0], [26.47, 29.53], [27.0, 29.75], [27.25, 29.65], 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29.0]]]]}, "2017-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, 29.0], [26.47, 29.53], [27.0, 29.75], [27.25, 29.65], [27.5, 29.75], [27.75, 29.65], [28.0, 29.75], [28.25, 29.65], [28.5, 29.75], [28.75, 29.65], [29.0, 29.75], [29.25, 29.65], [29.5, 29.75], [29.75, 29.65], [30.0, 29.75], [30.53, 29.53], [30.68, 29.18], [31.03, 29.03], [31.18, 28.68], [31.53, 28.53], [31.75, 28.0], [31.65, 27.75], [31.68, 27.68], [32.03, 27.53], [32.25, 27.0], [32.03, 26.47], [31.68, 26.32], [31.65, 26.25], [31.75, 26.0], [31.65, 25.75], [31.75, 25.5], [31.65, 25.25], [31.75, 25.0], [31.65, 24.75], [31.75, 24.5], [31.53, 23.97], [31.0, 23.75], [30.47, 23.97], [30.25, 24.5], [30.35, 24.75], [30.32, 24.82], [30.25, 24.85], [30.0, 24.75], [29.75, 24.85], [29.68, 24.82], [29.53, 24.47], [29.0, 24.25], [28.47, 24.47], [28.3, 24.88], [28.0, 24.75], [27.75, 24.85], [27.5, 24.75], [26.97, 24.97], [26.75, 25.5], [26.85, 25.75], [26.75, 26.0], [26.97, 26.53], [27.32, 26.68], [27.47, 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"description": "The daily evolution of mean t2m anomalies.", "value": [-3.0206200901715476, -3.5591737030668664, -3.12950831093856]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.656748053462877, -4.511097514150492, -3.8884365036480517]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3388257144571092, -1.5820750317372088, -1.3923266342158782]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7268431534952455, -1.8314565303892327, -1.6006585107968563]}}