{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:46.463527", "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-Jul-13_to_2016-Jul-16_22.5_15.5"}, "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": 2016070000502}, "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": "July 13 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 16 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": 81154.73211792498}, "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": ["Chad", "Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": 15.5}, "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": 22.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, 12.53], [20.0, 12.75], [20.25, 12.65], [20.32, 12.68], 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16.15], [22.5, 16.25], [23.03, 16.03], [23.25, 15.5], [23.15, 15.25], [23.18, 15.18], [23.53, 15.03], [23.75, 14.5], [23.65, 14.25], [23.75, 14.0], [23.63, 13.7], [24.03, 13.53], [24.25, 13.0], [24.15, 12.75], [24.25, 12.5], [24.03, 11.97], [23.5, 11.75], [23.25, 11.85], [23.0, 11.75], [22.75, 11.85], [22.5, 11.75], [22.25, 11.85], [22.18, 11.82], [22.03, 11.47], [21.5, 11.25], [21.25, 11.35], [21.0, 11.25], [20.75, 11.35], [20.68, 11.32], [20.53, 10.97], [20.0, 10.75], [19.47, 10.97], [19.25, 11.5], [19.35, 11.75], [19.25, 12.0], [19.47, 12.53]]]]}, "2016-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.47, 12.53], [20.0, 12.75], [20.25, 12.65], [20.32, 12.68], [20.47, 13.03], [21.0, 13.25], [21.25, 13.15], [21.38, 13.2], [21.32, 13.32], [20.97, 13.47], [20.82, 13.82], [20.47, 13.97], [20.25, 14.5], [20.47, 15.03], [21.0, 15.25], [21.25, 15.15], [21.32, 15.18], [21.35, 15.25], [21.25, 15.5], [21.47, 16.03], [22.0, 16.25], [22.25, 16.15], [22.5, 16.25], [23.03, 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12.97], [21.32, 13.32], [20.97, 13.47], [20.82, 13.82], [20.47, 13.97], [20.25, 14.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.063224811679902}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2569758155947963}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.954860758165466, 24.119984153235862, 23.32734686797403, 23.78963583880477]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.408754734788374, 21.504708264513795, 20.728326073156836, 22.880353819993047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7790749753653297, -1.9862662284089336, -2.647652437077892, -2.4693758868060667]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.140958853897473, -3.1965020471123466, -4.063224811679902, -3.9849328704240747]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3385284244072468, -1.3795146109948537, -1.9097630908812582, -1.5752604325949693]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7212035293008034, -1.7659790222817857, -2.201823491192229, -2.1035032689410853]}}