{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:03.859911", "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-Aug-30_to_2016-Sep-02_20.0_23.5"}, "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": 2016080000855}, "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": "August 30 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 02 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": 53527.66641595794}, "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": ["Libya"]}, "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": 23.5}, "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": 20.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 25.03], [18.82, 25.18], [18.97, 25.53], [19.5, 25.75], [19.75, 25.65], [19.82, 25.68], [19.97, 26.03], [20.32, 26.18], [20.47, 26.53], [21.0, 26.75], [21.53, 26.53], [21.75, 26.0], [21.53, 25.47], [21.18, 25.32], [21.03, 24.97], [20.68, 24.82], [20.65, 24.75], [20.75, 24.5], [20.65, 24.25], [20.75, 24.0], [20.65, 23.75], [20.75, 23.5], [20.53, 22.97], [20.0, 22.75], [19.75, 22.85], [19.5, 22.75], [18.97, 22.97], [18.82, 23.32], [18.47, 23.47], [18.25, 24.0], [18.35, 24.25], [18.25, 24.5], [18.47, 25.03]]]]}, "2016-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 25.03], [18.82, 25.18], [18.97, 25.53], [19.5, 25.75], [19.75, 25.65], [19.82, 25.68], [19.97, 26.03], [20.32, 26.18], [20.47, 26.53], [21.0, 26.75], [21.53, 26.53], [21.75, 26.0], [21.53, 25.47], [21.18, 25.32], [21.13, 25.2], [21.53, 25.03], [21.75, 24.5], [21.65, 24.25], [21.68, 24.18], [22.03, 24.03], [22.25, 23.5], [22.03, 22.97], [21.5, 22.75], [21.25, 22.85], [21.0, 22.75], [20.75, 22.85], [20.5, 22.75], [20.25, 22.85], [20.0, 22.75], [19.75, 22.85], [19.5, 22.75], [18.97, 22.97], [18.82, 23.32], [18.47, 23.47], [18.25, 24.0], [18.35, 24.25], [18.25, 24.5], [18.47, 25.03]]]]}, "2016-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 25.03], [18.82, 25.18], [18.97, 25.53], [19.5, 25.75], [19.75, 25.65], [19.82, 25.68], [19.97, 26.03], [20.32, 26.18], [20.47, 26.53], [21.0, 26.75], [21.53, 26.53], [21.75, 26.0], [21.53, 25.47], [21.18, 25.32], [21.13, 25.2], [21.53, 25.03], [21.75, 24.5], [21.65, 24.25], [21.68, 24.18], [22.03, 24.03], [22.25, 23.5], [22.03, 22.97], [21.5, 22.75], [21.25, 22.85], [21.0, 22.75], [20.75, 22.85], [20.5, 22.75], [20.25, 22.85], [20.0, 22.75], [19.75, 22.85], [19.5, 22.75], [18.97, 22.97], [18.82, 23.32], [18.47, 23.47], [18.25, 24.0], [18.35, 24.25], [18.25, 24.5], [18.47, 25.03]]]]}, "2016-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.47, 25.03], [19.0, 25.25], [19.25, 25.15], [19.5, 25.25], [20.0, 25.04], [20.5, 25.25], [20.75, 25.15], [21.0, 25.25], [21.53, 25.03], [21.75, 24.5], [21.65, 24.25], [21.68, 24.18], [22.03, 24.03], [22.25, 23.5], [22.03, 22.97], [21.5, 22.75], [21.25, 22.85], [21.0, 22.75], [20.75, 22.85], [20.5, 22.75], [20.25, 22.85], [20.0, 22.75], [19.75, 22.85], [19.5, 22.75], [18.97, 22.97], [18.82, 23.32], [18.47, 23.47], [18.25, 24.0], [18.35, 24.25], [18.25, 24.5], [18.47, 25.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8901350395268537}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.459585106594964}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.15118268615612, 27.024577787470434, 27.01199854522855, 26.92803474039681]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.381482485870094, 26.04980024076673, 26.008773013633856, 26.158712816717923]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3208919709258375, -2.4756169059371946, -2.465962088216522, -2.5548582442655436]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6802415650666376, -2.7267322486971466, -2.755444898019107, -2.8901350395268537]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3744272696571667, -1.4673543482653324, -1.4555577746302077, -1.4376946940134872]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.492962322694329, -1.5389699305062443, -1.5719380680644004, -1.5942721553392742]}}