{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:07.802310", "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_38.5_-7.0"}, "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": 2021120000393}, "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": 153488.20882827052}, "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", "Tanzania, United Republic of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -7.0}, "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": 38.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "38.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 37.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 41.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[40.03, -4.97], [40.18, -5.32], [40.53, -5.47], [40.68, -5.82], [40.75, -5.85], [41.0, -5.75], [41.53, -5.97], [41.75, -6.5], 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at each time step", "value": {"2021-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, -6.5], [40.47, -5.97], [41.0, -5.75], [41.53, -5.97], [41.75, -6.5], [41.65, -6.75], [41.75, -7.0], [41.53, -7.53], [41.0, -7.75], [40.47, -7.53], [40.25, -7.0], [40.35, -6.75], [40.25, -6.5]]]]}, "2021-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.47, -6.53], [38.25, -6.0], [38.47, -5.47], [38.82, -5.32], [38.97, -4.97], [39.5, -4.75], [40.03, -4.97], [40.18, -5.32], [40.53, -5.47], [40.68, -5.82], [40.75, -5.85], [41.0, -5.75], [41.53, -5.97], [41.75, -6.5], [41.65, -6.75], [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], [41.0, -9.25], [40.75, -9.15], [40.5, -9.25], [40.25, -9.15], [40.0, -9.25], [39.75, -9.15], [39.5, -9.25], [38.97, -9.03], [38.75, -8.5], [38.96, -8.0], [38.75, -7.5], [38.96, -7.0], [38.82, -6.68], [38.47, -6.53]]]]}, "2021-12-12T11:30:00.000000000": 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-1.614702486943082}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.37396211692601, 26.014670075090294, 24.97437352039759, 24.549946764676235, 24.467238031157876]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.32629032105234, 25.897885180214587, 20.347781534077455, 19.2365867224039, 20.0169466930746]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9402792709728374, -1.16704191363006, -1.5045041243979824, -1.973506865170608, -1.556751372715241]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9985958511219906, -1.4085196315882627, -2.546034243210613, -3.826494895379483, -2.1457625188309066]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4694126690741427, -1.8502480706414532, -1.9298789277582769, -2.408773436852996, -1.6892089318817793]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5609814123659018, -2.2042421148258016, -2.6753280015271605, -3.336357906600933, -2.05171754598882]}}