{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:25:09.300945", "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": "2021-Apr-12_to_2021-Apr-14_28.0_13.5"}, "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": 2021040000516}, "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": "April 12 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 14 2021"}, "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": 66120.41664954959}, "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": ["Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "N.Eastern-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": 13.5}, "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": 25.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 12.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, 13.97], [24.75, 14.5], [24.97, 15.03], [25.5, 15.25], [25.75, 15.15], [26.0, 15.25], [26.25, 15.15], [26.5, 15.25], [26.75, 15.15], [27.0, 15.25], [27.53, 15.03], [27.68, 14.68], [27.75, 14.65], [28.0, 14.75], [28.53, 14.53], [28.68, 14.18], [29.03, 14.03], [29.25, 13.5], [29.15, 13.25], [29.25, 13.0], [29.03, 12.47], [28.68, 12.32], [28.53, 11.97], [28.0, 11.75], [27.75, 11.85], [27.5, 11.75], [27.25, 11.85], [27.0, 11.75], [26.47, 11.97], [26.32, 12.32], [26.25, 12.35], [26.0, 12.25], [25.47, 12.47], [25.25, 13.0], [25.47, 13.53], [25.82, 13.68], [25.85, 13.75], [25.82, 13.82], [25.75, 13.85], [25.5, 13.75], [24.97, 13.97]]]]}, "2021-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, 13.97], [24.75, 14.5], [24.97, 15.03], [25.5, 15.25], [25.75, 15.15], [26.0, 15.25], [26.25, 15.15], [26.5, 15.25], [26.75, 15.15], [27.0, 15.25], [27.53, 15.03], [27.68, 14.68], [27.75, 14.65], [28.0, 14.75], [28.53, 14.53], [28.68, 14.18], [29.03, 14.03], [29.25, 13.5], [29.15, 13.25], [29.25, 13.0], [29.03, 12.47], [28.68, 12.32], [28.53, 11.97], [28.0, 11.75], [27.75, 11.85], [27.5, 11.75], [27.25, 11.85], [27.0, 11.75], [26.47, 11.97], [26.32, 12.32], [26.25, 12.35], [26.0, 12.25], [25.47, 12.47], [25.25, 13.0], [25.47, 13.53], [25.82, 13.68], [25.85, 13.75], [25.82, 13.82], [25.75, 13.85], [25.5, 13.75], [24.97, 13.97]]]]}, "2021-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.97, 13.97], [24.75, 14.5], [24.97, 15.03], [25.5, 15.25], [25.75, 15.15], [26.0, 15.25], [26.25, 15.15], [26.5, 15.25], [26.75, 15.15], [27.0, 15.25], [27.53, 15.03], [27.68, 14.68], [27.75, 14.65], [28.0, 14.75], [28.53, 14.53], [28.68, 14.18], [29.03, 14.03], [29.25, 13.5], [29.15, 13.25], [29.25, 13.0], [29.03, 12.47], [28.68, 12.32], [28.53, 11.97], [28.0, 11.75], [27.75, 11.85], [27.5, 11.75], [27.25, 11.85], [27.0, 11.75], [26.47, 11.97], [26.32, 12.32], [26.25, 12.35], [26.0, 12.25], [25.47, 12.47], [25.25, 13.0], [25.47, 13.53], [25.82, 13.68], [25.85, 13.75], [25.82, 13.82], [25.75, 13.85], [25.5, 13.75], [24.97, 13.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.235151829158951}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.8701547483200587}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.021213713160762, 25.067715138316373, 26.181070711851874]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.07699441413496, 21.971039237136097, 23.388696586206834]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.4844155881269163, -4.5573955195593605, -3.5686531372738997]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.47078327487128, -5.235151829158951, -3.9674396164212453]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4851603548825159, -2.0005153510843154, -1.6250272503062122]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6824583640466633, -2.0816524265904266, -1.7863701669597263]}}