{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:42.841173", "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": "2016-Feb-07_to_2016-Feb-10_32.0_22.5"}, "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": 2016020000249}, "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 07 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 10 2016"}, "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": 80387.3834336773}, "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": 22.5}, "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": 32.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.0\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": 32.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.75, 23.0], [29.97, 23.53], [30.32, 23.68], [30.35, 23.75], [30.25, 24.0], [30.47, 24.53], [31.0, 24.75], [31.53, 24.53], [31.75, 24.0], [31.65, 23.75], [31.68, 23.68], [32.03, 23.53], [32.18, 23.18], [32.53, 23.03], [32.75, 22.5], [32.53, 21.97], [32.18, 21.82], [32.03, 21.47], [31.5, 21.25], [31.25, 21.35], [31.0, 21.25], [30.47, 21.47], [30.25, 22.0], [30.35, 22.25], [30.32, 22.32], [29.97, 22.47], [29.75, 23.0]]]]}, "2016-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, 21.53], [26.82, 21.68], [26.97, 22.03], [27.5, 22.25], [27.75, 22.15], [28.0, 22.25], [28.25, 22.15], [28.5, 22.25], [28.75, 22.15], [29.0, 22.25], [29.3, 22.13], [29.47, 22.53], [29.88, 22.7], [29.75, 23.0], [29.97, 23.53], [30.32, 23.68], [30.35, 23.75], [30.25, 24.0], [30.47, 24.53], [31.0, 24.75], [31.53, 24.53], [31.75, 24.0], [31.65, 23.75], [31.68, 23.68], [32.03, 23.53], [32.18, 23.18], [32.53, 23.03], [32.75, 22.5], [32.53, 21.97], [32.18, 21.82], [32.03, 21.47], [31.68, 21.32], [31.53, 20.97], [31.0, 20.75], [30.5, 20.96], [30.18, 20.82], [30.15, 20.75], [30.25, 20.5], [30.03, 19.97], [29.5, 19.75], [29.0, 19.96], [28.5, 19.75], [28.25, 19.85], [28.0, 19.75], [27.75, 19.85], [27.5, 19.75], [27.25, 19.85], [27.0, 19.75], [26.47, 19.97], [26.25, 20.5], [26.35, 20.75], [26.25, 21.0], [26.47, 21.53]]]]}, "2016-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, 21.53], [26.82, 21.68], [26.97, 22.03], [27.5, 22.25], [27.75, 22.15], [28.0, 22.25], [28.25, 22.15], [28.5, 22.25], [28.75, 22.15], [29.0, 22.25], [29.3, 22.13], [29.47, 22.53], [29.88, 22.7], [29.75, 23.0], [29.97, 23.53], [30.32, 23.68], [30.35, 23.75], [30.25, 24.0], [30.47, 24.53], [31.0, 24.75], [31.53, 24.53], [31.75, 24.0], [31.65, 23.75], [31.68, 23.68], [32.03, 23.53], [32.18, 23.18], [32.53, 23.03], [32.75, 22.5], [32.53, 21.97], [32.18, 21.82], [32.03, 21.47], [31.68, 21.32], [31.53, 20.97], [31.0, 20.75], [30.5, 20.96], [30.18, 20.82], [30.15, 20.75], [30.25, 20.5], [30.03, 19.97], [29.5, 19.75], [29.0, 19.96], [28.5, 19.75], [28.25, 19.85], [28.0, 19.75], [27.75, 19.85], [27.5, 19.75], [27.25, 19.85], [27.0, 19.75], [26.47, 19.97], [26.25, 20.5], [26.35, 20.75], [26.25, 21.0], [26.47, 21.53]]]]}, "2016-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, 21.53], [26.82, 21.68], [26.97, 22.03], [27.5, 22.25], [27.75, 22.15], [28.0, 22.25], [28.25, 22.15], [28.5, 22.25], [28.75, 22.15], [29.0, 22.25], [29.3, 22.13], [29.47, 22.53], [30.0, 22.75], [30.25, 22.65], [30.38, 22.7], [30.25, 23.0], [30.47, 23.53], [31.0, 23.75], [31.53, 23.53], [31.68, 23.18], [31.75, 23.15], [32.0, 23.25], [32.53, 23.03], [32.75, 22.5], [32.53, 21.97], [32.18, 21.82], [32.03, 21.47], [31.68, 21.32], [31.53, 20.97], [31.0, 20.75], [30.5, 20.96], [30.18, 20.82], [30.15, 20.75], [30.25, 20.5], [30.03, 19.97], [29.5, 19.75], [29.0, 19.96], [28.5, 19.75], [28.25, 19.85], [28.0, 19.75], [27.75, 19.85], [27.5, 19.75], [27.25, 19.85], [27.0, 19.75], [26.47, 19.97], [26.25, 20.5], [26.35, 20.75], [26.25, 21.0], [26.47, 21.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.956646805224636}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.9533422742702187}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.054941052838842, 11.050305641037255, 11.577499445918363, 11.820355189805468]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.756663197788441, 8.742796756928954, 9.265184292081642, 9.925676575214595]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.9635401167224815, -4.528185937708737, -3.880905028066713, -3.309280542129174]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": 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