{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:29.068925", "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-Dec-10_to_2021-Dec-14_39.0_-7.5"}, "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": 2021120000344}, "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": "December 10 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 14 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 67383.59643685512}, "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": ["Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": ["Indian Ocean"]}, "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": -7.5}, "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": 39.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.0, -6.25], [41.53, -6.47], [41.75, -7.0], [41.53, -7.53], [41.0, -7.75], [40.47, -7.53], [40.25, -7.0], [40.47, -6.47], [41.0, -6.25]]]]}, "2021-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.96, -7.0], [38.75, -6.5], [38.97, -5.97], [39.5, -5.75], [39.75, -5.85], [40.0, -5.75], [40.25, -5.85], [40.5, -5.75], [41.03, -5.97], [41.18, -6.32], [41.53, -6.47], [41.75, -7.0], [41.65, -7.25], [41.75, -7.5], [41.65, -7.75], [41.75, -8.0], [41.65, -8.25], [41.75, -8.5], [41.53, -9.03], [41.18, -9.18], [41.03, -9.53], [40.5, -9.75], [40.25, -9.65], [40.0, -9.75], [39.47, -9.53], [39.32, -9.18], [38.97, -9.03], [38.75, -8.5], [38.96, -8.0], [38.75, -7.5], [38.96, -7.0]]]]}, "2021-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, -6.47], [38.82, -6.32], [38.97, -5.97], [39.5, -5.75], [39.75, -5.85], [40.0, -5.75], [40.25, -5.85], [40.5, -5.75], [41.03, -5.97], [41.18, -6.32], [41.53, -6.47], [41.75, -7.0], [41.65, -7.25], [41.75, -7.5], [41.65, -7.75], [41.75, -8.0], [41.65, -8.25], [41.75, -8.5], [41.53, -9.03], [41.18, -9.18], [41.03, -9.53], [40.5, -9.75], [40.25, -9.65], [40.0, -9.75], [39.47, -9.53], [39.32, -9.18], [39.25, -9.15], [39.0, -9.25], [38.47, -9.03], [38.25, -8.5], [38.46, -8.0], [38.25, -7.5], [38.35, -7.25], [38.25, -7.0], [38.47, -6.47]]]]}, "2021-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, -6.47], [38.82, -6.32], [38.97, -5.97], [39.5, -5.75], [39.75, -5.85], [40.0, -5.75], [40.25, -5.85], [40.5, -5.75], [41.03, -5.97], [41.18, -6.32], [41.53, -6.47], [41.75, -7.0], [41.65, -7.25], [41.75, -7.5], [41.65, -7.75], [41.75, -8.0], [41.65, -8.25], [41.75, -8.5], [41.53, -9.03], [41.18, -9.18], [41.03, -9.53], [40.5, -9.75], [40.25, -9.65], [40.0, -9.75], [39.47, -9.53], [39.32, -9.18], [39.25, -9.15], [39.0, -9.25], [38.47, -9.03], [38.25, -8.5], [38.46, -8.0], [38.25, -7.5], [38.35, -7.25], [38.25, -7.0], [38.47, -6.47]]]]}, "2021-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, -6.47], [39.0, -6.25], [39.53, -6.47], [39.75, -7.0], [39.65, -7.25], [39.75, -7.5], [39.54, -8.0], [39.75, -8.5], [39.53, -9.03], [39.0, -9.25], [38.47, -9.03], [38.25, -8.5], [38.46, -8.0], [38.25, -7.5], [38.35, -7.25], [38.25, -7.0], [38.47, -6.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.784286647315355}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.274379270250125}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.42163391279962, 26.03015590225533, 25.91504248743439, 25.846649424564475, 25.30353405685463]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.42163391279962, 25.897885180214587, 24.39809606926798, 24.000055129623718, 24.967863435661684]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8934030066088781, -1.1870743846773018, -1.264604840791205, -1.3471239136852555, -1.4925207309328812]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8934030066088781, -1.4116720644554448, -1.976064770720086, -2.784286647315355, -1.7933443458289844]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3777559149983616, -1.870136100853112, -1.8712597459872038, -1.9347500207334696, -1.6084120160684277]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3777559149983616, -2.2256618025523984, -2.1459111263818804, -2.990839971671869, -1.79071633960801]}}