{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:40.756166", "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": "2020-Jul-15_to_2020-Jul-18_28.5_-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": 2020070000558}, "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 15 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 18 2020"}, "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": 74598.46328551084}, "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": ["Botswana", "South Africa", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "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": 28.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.5\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": 30.25}, "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": -20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.97, -23.53], [28.75, -23.0], [28.97, -22.47], [29.5, -22.25], [30.03, -22.47], [30.25, -23.0], [30.03, -23.53], [29.5, -23.75], [28.97, -23.53]]], [[[27.0, -19.75], [27.25, -19.85], [27.5, -19.75], [27.75, -19.85], [28.0, -19.75], [28.25, -19.85], [28.5, -19.75], [29.03, -19.97], [29.25, -20.5], [29.15, -20.75], [29.25, -21.0], [29.03, -21.53], [28.5, -21.75], [28.25, -21.65], [28.0, -21.75], [27.75, -21.65], [27.5, -21.75], [27.25, -21.65], [27.0, -21.75], [26.47, -21.53], [26.25, -21.0], [26.35, -20.75], [26.25, -20.5], [26.47, -19.97], [27.0, -19.75]]]]}, "2020-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, -19.97], [27.0, -19.75], [27.25, -19.85], [27.5, -19.75], [27.75, -19.85], [28.0, -19.75], [28.25, -19.85], [28.5, -19.75], [29.03, -19.97], [29.25, -20.5], [29.15, -20.75], [29.18, -20.82], [29.53, -20.97], [29.68, -21.32], [30.03, -21.47], [30.18, -21.82], [30.53, -21.97], [30.75, -22.5], [30.53, -23.03], [30.18, -23.18], [30.03, -23.53], [29.5, -23.75], [29.25, -23.65], [29.0, -23.75], [28.5, -23.54], [28.0, -23.75], [27.75, -23.65], [27.5, -23.75], [26.97, -23.53], [26.75, -23.0], [26.85, -22.75], [26.75, -22.5], [26.85, -22.25], [26.75, -22.0], [26.88, -21.7], [26.47, -21.53], [26.25, -21.0], [26.35, -20.75], [26.25, -20.5], [26.47, -19.97]]]]}, "2020-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, -19.97], [27.0, -19.75], [27.25, -19.85], [27.5, -19.75], [27.75, -19.85], [28.0, -19.75], [28.25, -19.85], [28.5, -19.75], [29.03, -19.97], [29.25, -20.5], [29.15, -20.75], [29.18, -20.82], [29.53, -20.97], [29.68, -21.32], [30.03, -21.47], [30.18, -21.82], [30.53, -21.97], [30.75, -22.5], [30.53, -23.03], [30.18, -23.18], [30.03, -23.53], [29.5, -23.75], [29.25, -23.65], [29.0, -23.75], [28.5, -23.54], [28.0, -23.75], [27.75, -23.65], [27.5, -23.75], [26.97, -23.53], [26.75, -23.0], [26.85, -22.75], [26.75, -22.5], [26.85, -22.25], [26.75, -22.0], [26.88, -21.7], [26.47, -21.53], [26.25, -21.0], [26.35, -20.75], [26.25, -20.5], [26.47, -19.97]]]]}, "2020-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.85, -22.25], [26.75, -22.0], [26.97, -21.47], [27.32, -21.32], [27.47, -20.97], [28.0, -20.75], [28.25, -20.85], [28.5, -20.75], [28.75, -20.85], [29.0, -20.75], [29.53, -20.97], [29.68, -21.32], [30.03, -21.47], [30.18, -21.82], [30.53, -21.97], [30.75, -22.5], [30.53, -23.03], [30.0, -23.25], [29.75, -23.15], [29.68, -23.18], [29.53, -23.53], [29.0, -23.75], [28.5, -23.54], [28.0, -23.75], [27.75, -23.65], [27.5, -23.75], [26.97, -23.53], [26.75, -23.0], [26.85, -22.75], [26.75, -22.5], [26.85, -22.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.025572997632935}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.4528529392661325}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.747446702229638, 11.197777804161603, 11.743589771755751, 12.85097760611984]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.283980886036147, 9.167357284710988, 10.007717683560145, 11.704063272593771]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.79845607063223, -4.015859019403887, -3.548152388660983, -2.792478118669508]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.1126113845887744, -5.025572997632935, -3.9327474065646584, -3.1998209022390824]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4207292513769785, -2.0720135254042766, -1.8269201480346977, -1.4437313205853126]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5475862698949037, -2.539596343206506, -2.0296981577247886, -1.6550438730951602]}}