{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:40.532463", "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": "2018-Dec-09_to_2018-Dec-13_34.5_3.0"}, "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": 2018120000361}, "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 09 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 13 2018"}, "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": 67979.00016284944}, "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": ["Kenya", "Uganda"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "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": []}, "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": 3.0}, "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": 34.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 32.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.46, 1.5], [32.25, 2.0], [32.35, 2.25], [32.25, 2.5], [32.47, 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-1.03], [34.5, -1.25], [34.2, -1.12], [34.03, -1.53], [33.5, -1.75], [33.25, -1.65], [33.0, -1.75], [32.47, -1.53], [32.25, -1.0], [32.47, -0.47], [32.82, -0.32], [32.85, -0.25], [32.82, -0.18], [32.47, -0.03], [32.25, 0.5], [32.35, 0.75], [32.25, 1.0], [32.46, 1.5]]]]}, "2018-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.46, 1.5], [32.25, 2.0], [32.35, 2.25], [32.25, 2.5], [32.47, 3.03], [33.0, 3.25], [33.3, 3.12], [33.47, 3.53], [34.0, 3.75], [34.25, 3.65], [34.5, 3.75], [35.03, 3.53], [35.25, 3.0], [35.04, 2.5], [35.25, 2.0], [35.03, 1.47], [34.68, 1.32], [34.63, 1.2], [35.03, 1.03], [35.25, 0.5], [35.15, 0.25], [35.25, 0.0], [35.15, -0.25], [35.25, -0.5], [35.03, -1.03], [34.5, -1.25], [34.2, -1.12], [34.03, -1.53], [33.5, -1.75], [33.25, -1.65], [33.0, -1.75], [32.47, -1.53], [32.25, -1.0], [32.47, -0.47], [32.82, -0.32], [32.85, -0.25], [32.82, -0.18], [32.47, -0.03], [32.25, 0.5], [32.35, 0.75], [32.25, 1.0], [32.46, 1.5]]]]}, "2018-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.97, 3.53], [34.5, 3.75], [35.03, 3.53], [35.25, 3.0], [35.04, 2.5], [35.25, 2.0], [35.03, 1.47], [34.5, 1.25], [34.25, 1.35], [34.0, 1.25], [33.47, 1.47], [33.25, 2.0], [33.47, 2.53], [33.88, 2.7], [33.75, 3.0], [33.97, 3.53]]]]}, "2018-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.5, 3.75], [35.03, 3.53], [35.25, 3.0], [35.03, 2.47], [34.5, 2.25], [33.97, 2.47], [33.75, 3.0], [33.97, 3.53], [34.5, 3.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5351762822952537}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9319480871987278}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.743195707459734, 21.66072668941041, 20.993261548119165, 22.836084949870894, 22.92700849941167]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.563726337721562, 19.955622337129114, 19.140390611886403, 22.80448416791006, 22.92700849941167]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6590522950738618, -1.7508588323843706, -2.42634289794707, -1.7816603484756683, -1.4937964995672814]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.662182575580289, -2.609717902325599, -3.5351762822952537, -2.060181394456606, -1.4937964995672814]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6435241307830337, -1.731803609772151, -2.3620549836502023, -1.4600685941300575, -1.5262371625058693]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3496175911638133, -2.5869507626824277, -3.307081643718988, -1.642682993063835, -1.5262371625058693]}}