{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:36.009715", "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-Jun-20_to_2016-Jun-22_17.0_14.0"}, "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": 2016060000639}, "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": "June 20 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 22 2016"}, "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": 50932.01209440382}, "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"]}, "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": 14.0}, "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": 17.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 18.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.85, 13.75], [15.75, 14.0], [15.85, 14.25], [15.75, 14.5], [15.85, 14.75], [15.75, 15.0], [15.97, 15.53], [16.5, 15.75], [16.75, 15.65], [17.0, 15.75], [17.25, 15.65], [17.5, 15.75], [18.0, 15.54], [18.5, 15.75], [19.03, 15.53], [19.25, 15.0], [19.15, 14.75], [19.25, 14.5], [19.03, 13.97], [18.68, 13.82], [18.53, 13.47], [18.18, 13.32], [18.03, 12.97], [17.5, 12.75], [17.25, 12.85], [17.18, 12.82], [17.03, 12.47], [16.5, 12.25], [15.97, 12.47], [15.75, 13.0], [15.85, 13.25], [15.75, 13.5], [15.85, 13.75]]]]}, "2016-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.85, 13.75], [15.75, 14.0], [15.85, 14.25], [15.75, 14.5], [15.85, 14.75], [15.75, 15.0], [15.97, 15.53], [16.5, 15.75], [16.75, 15.65], [17.0, 15.75], [17.25, 15.65], [17.5, 15.75], [18.0, 15.54], [18.5, 15.75], [19.03, 15.53], [19.25, 15.0], [19.15, 14.75], [19.25, 14.5], [19.03, 13.97], [18.68, 13.82], [18.53, 13.47], [18.18, 13.32], [18.03, 12.97], [17.5, 12.75], [17.25, 12.85], [17.18, 12.82], [17.03, 12.47], [16.5, 12.25], [15.97, 12.47], [15.75, 13.0], [15.85, 13.25], [15.75, 13.5], [15.85, 13.75]]]]}, "2016-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.85, 13.75], [15.75, 14.0], [15.85, 14.25], [15.75, 14.5], [15.85, 14.75], [15.75, 15.0], [15.97, 15.53], [16.5, 15.75], [16.75, 15.65], [17.0, 15.75], [17.25, 15.65], [17.5, 15.75], [18.0, 15.54], [18.5, 15.75], [19.03, 15.53], [19.25, 15.0], [19.15, 14.75], [19.25, 14.5], [19.03, 13.97], [18.68, 13.82], [18.53, 13.47], [18.18, 13.32], [18.03, 12.97], [17.5, 12.75], [17.25, 12.85], [17.18, 12.82], [17.03, 12.47], [16.5, 12.25], [15.97, 12.47], [15.75, 13.0], [15.85, 13.25], [15.75, 13.5], [15.85, 13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.07811478407848}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6575988424257084}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.243743073455676, 30.528801101165982, 30.703635437528078]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.963711801722354, 29.52371527400004, 29.505539353637687]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.980782359143859, -2.6202888067910957, -2.371725361342171]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.07811478407848, -3.1556027373308666, -2.8480869018934527]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.04494876341169, -1.7583012247842327, -1.5799050427580124]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7156047059354513, -2.0348049685949263, -1.910214495472268]}}