{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:49.147008", "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": "2015-Sep-14_to_2015-Sep-16_29.0_-17.5"}, "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": 2015090000546}, "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 14 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 16 2015"}, "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": 55726.16665411688}, "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": ["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": -17.5}, "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": 29.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "29.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.25}, "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": -19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, -17.97], [27.0, -17.75], [27.25, -17.85], [27.32, -17.82], [27.35, -17.75], [27.25, -17.5], [27.47, -16.97], [28.0, -16.75], [28.25, -16.85], [28.5, -16.75], [28.75, -16.85], [29.0, -16.75], [29.25, -16.85], [29.5, -16.75], [30.03, -16.97], [30.25, -17.5], [30.15, -17.75], [30.25, -18.0], [30.15, -18.25], [30.25, -18.5], [30.03, -19.03], [29.68, -19.18], [29.53, -19.53], [29.0, -19.75], [28.75, -19.65], [28.5, -19.75], [28.25, -19.65], [28.0, -19.75], [27.75, -19.65], [27.68, -19.68], [27.53, -20.03], [27.0, -20.25], [26.75, -20.15], [26.5, -20.25], [25.97, -20.03], [25.75, -19.5], [25.97, -18.97], [26.38, -18.8], [26.25, -18.5], [26.47, -17.97]]]]}, "2015-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, -17.97], [27.0, -17.75], [27.25, -17.85], [27.32, -17.82], [27.35, -17.75], [27.25, -17.5], [27.47, -16.97], [28.0, -16.75], [28.25, -16.85], [28.5, -16.75], [28.75, -16.85], [29.0, -16.75], [29.25, -16.85], [29.5, -16.75], [30.03, -16.97], [30.25, -17.5], [30.15, -17.75], [30.25, -18.0], [30.15, -18.25], [30.25, -18.5], [30.03, -19.03], [29.68, -19.18], [29.53, -19.53], [29.0, -19.75], [28.75, -19.65], [28.5, -19.75], [28.25, -19.65], [28.0, -19.75], [27.75, -19.65], [27.68, -19.68], [27.53, -20.03], [27.0, -20.25], [26.75, -20.15], [26.5, -20.25], [25.97, -20.03], [25.75, -19.5], [25.97, -18.97], [26.38, -18.8], [26.25, -18.5], [26.47, -17.97]]]]}, "2015-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.47, -17.97], [27.0, -17.75], [27.25, -17.85], [27.32, -17.82], [27.35, -17.75], [27.25, -17.5], [27.47, -16.97], [28.0, -16.75], [28.25, -16.85], [28.5, -16.75], [28.75, -16.85], [29.0, -16.75], [29.25, -16.85], [29.5, -16.75], [30.03, -16.97], [30.25, -17.5], [30.15, -17.75], [30.25, -18.0], [30.15, -18.25], [30.25, -18.5], [30.03, -19.03], [29.68, -19.18], [29.53, -19.53], [29.0, -19.75], [28.75, -19.65], [28.5, -19.75], [28.25, -19.65], [28.0, -19.75], [27.75, -19.65], [27.68, -19.68], [27.53, -20.03], [27.0, -20.25], [26.75, -20.15], [26.5, -20.25], [25.97, -20.03], [25.75, -19.5], [25.97, -18.97], [26.38, -18.8], [26.25, -18.5], [26.47, -17.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.2621482776846165}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.953933599523975}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.789774985295878, 19.187263933838437, 20.586473012612714]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.17958905947262, 17.285164595732738, 18.74003495288781]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8799076648847883, -4.639619240629525, -3.342273893057612]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.961252679934887, -5.2621482776846165, -3.953539816126465]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7996931780645058, -2.210678478698444, -1.6134068614666337]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.074587356119833, -2.6944968084528487, -1.9529252842493336]}}