{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:18.609531", "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": "2014-Sep-23_to_2014-Sep-26_28.0_-16.5"}, "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": 2014090000843}, "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": "September 23 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 26 2014"}, "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": 68186.1207181057}, "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": ["Zambia", "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": -16.5}, "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": 28.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "28.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 29.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.75}, "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": {"2014-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.47, -14.97], [26.0, -14.75], [26.25, -14.85], [26.5, -14.75], [26.75, -14.85], [27.0, -14.75], [27.25, -14.85], [27.5, -14.75], [28.03, -14.97], [28.18, -15.32], [28.25, -15.35], [28.5, -15.25], [29.03, -15.47], [29.25, -16.0], [29.15, -16.25], [29.18, -16.32], [29.53, -16.47], [29.68, -16.82], [30.03, -16.97], [30.25, -17.5], [30.03, -18.03], [29.5, -18.25], [28.97, -18.03], [28.82, -17.68], [28.75, -17.65], [28.5, -17.75], [28.25, -17.65], [28.0, -17.75], [27.75, -17.65], [27.5, -17.75], [27.25, -17.65], [27.18, -17.68], [27.03, -18.03], [26.5, -18.25], [25.97, -18.03], [25.75, -17.5], [25.85, -17.25], [25.82, -17.18], [25.47, -17.03], [25.25, -16.5], [25.46, -16.0], [25.25, -15.5], [25.47, -14.97]]]]}, "2014-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.35, -15.75], [25.25, -15.5], [25.47, -14.97], [26.0, -14.75], [26.25, -14.85], [26.5, -14.75], [26.75, -14.85], [27.0, -14.75], [27.25, -14.85], [27.5, -14.75], [28.03, -14.97], [28.18, -15.32], [28.25, -15.35], [28.5, -15.25], [29.03, -15.47], [29.25, -16.0], [29.15, -16.25], [29.18, -16.32], [29.53, -16.47], [29.68, -16.82], [30.03, -16.97], [30.25, -17.5], [30.03, -18.03], [29.5, -18.25], [28.97, -18.03], [28.82, -17.68], [28.75, -17.65], [28.5, -17.75], [28.25, -17.65], [28.0, -17.75], [27.75, -17.65], [27.5, -17.75], [27.25, -17.65], [27.18, -17.68], [27.03, -18.03], [26.5, -18.25], [25.97, -18.03], [25.75, -17.5], [25.85, -17.25], [25.82, -17.18], [25.47, -17.03], [25.25, -16.5], [25.35, -16.25], [25.25, -16.0], [25.35, -15.75]]]]}, "2014-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.35, -15.75], [25.25, -15.5], [25.47, -14.97], [26.0, -14.75], [26.25, -14.85], [26.5, -14.75], [26.75, -14.85], [27.0, -14.75], [27.25, -14.85], [27.5, -14.75], [28.03, -14.97], [28.18, -15.32], [28.25, -15.35], [28.5, -15.25], [29.03, -15.47], [29.25, -16.0], [29.15, -16.25], [29.18, -16.32], [29.53, -16.47], [29.68, -16.82], [30.03, -16.97], [30.25, -17.5], [30.03, -18.03], [29.5, -18.25], [28.97, -18.03], [28.82, -17.68], [28.75, -17.65], [28.5, -17.75], [28.25, -17.65], [28.0, -17.75], [27.75, -17.65], [27.5, -17.75], [27.25, -17.65], [27.18, -17.68], [27.03, -18.03], [26.5, -18.25], [25.97, -18.03], [25.75, -17.5], [25.85, -17.25], [25.82, -17.18], [25.47, -17.03], [25.25, -16.5], [25.35, -16.25], [25.25, -16.0], [25.35, -15.75]]]]}, "2014-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.0, -15.25], [26.53, -15.47], [26.75, -16.0], [26.53, -16.53], [26.0, -16.75], [25.47, -16.53], [25.25, -16.0], [25.47, -15.47], [26.0, -15.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1637796859137097}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4306839017579946}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.827759229469166, 22.85566990667951, 23.226232119409588, 24.299441718966875]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.928908033395658, 19.795859177547868, 20.139770770197458, 24.299441718966875]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.374722653349458, -2.5526355985699465, -2.391678993273751, -1.7540552352085115]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8564768956410944, -3.1637796859137097, -2.9301993222688907, -1.7540552352085115]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5428610778846719, -1.5863349388328027, -1.4464723715948933, -1.1773346078538063]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7663685262002737, -1.7619824029860347, -1.8156477575531305, -1.1773346078538063]}}