{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:43.525192", "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": "2026-Mar-07_to_2026-Mar-12_343.0_27.0"}, "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": 2026030000265}, "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": "March 07 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 12 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 54796.416594001916}, "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": ["Spain"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Atlantic 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": 27.0}, "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": 343.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "343.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 340.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 344.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.75}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-16.97, 25.97], [-17.5, 25.75], [-18.03, 25.97], [-18.25, 26.5], [-18.15, 26.75], [-18.18, 26.82], [-18.25, 26.85], [-18.32, 26.82], [-18.47, 26.47], [-19.0, 26.25], [-19.53, 26.47], [-19.75, 27.0], [-19.65, 27.25], [-19.75, 27.5], [-19.53, 28.03], [-19.18, 28.18], [-19.03, 28.53], [-18.5, 28.75], [-18.25, 28.65], [-18.18, 28.68], [-18.03, 29.03], [-17.5, 29.25], [-17.25, 29.15], [-17.0, 29.25], [-16.75, 29.15], [-16.5, 29.25], [-15.97, 29.03], [-15.8, 28.62], [-15.5, 28.75], [-14.97, 28.53], [-14.75, 28.0], [-14.85, 27.75], [-14.75, 27.5], [-14.97, 26.97], [-15.32, 26.82], [-15.47, 26.47], [-16.0, 26.25], [-16.25, 26.35], [-16.5, 26.25], [-16.75, 26.35], [-16.82, 26.32], [-16.97, 25.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.75, 27.5], [-19.529999999999973, 28.03], [-19.180000000000007, 28.18], [-19.029999999999973, 28.53], [-18.5, 28.75], [-18.25, 28.65], [-18.180000000000007, 28.68], [-18.029999999999973, 29.03], [-17.5, 29.25], [-17.25, 29.15], [-17.0, 29.25], [-16.75, 29.15], [-16.5, 29.25], [-15.970000000000027, 29.03], [-15.800000000000011, 28.62], [-15.5, 28.75], [-14.970000000000027, 28.53], [-14.75, 28.0], [-14.850000000000023, 27.75], [-14.75, 27.5], [-14.970000000000027, 26.97], [-15.319999999999993, 26.82], [-15.470000000000027, 26.47], [-16.0, 26.25], [-16.25, 26.35], [-16.5, 26.25], [-16.75, 26.35], [-16.819999999999993, 26.32], [-16.970000000000027, 25.97], [-17.5, 25.75], [-18.029999999999973, 25.97], [-18.25, 26.5], [-18.149999999999977, 26.75], [-18.180000000000007, 26.82], [-18.25, 26.85], [-18.319999999999993, 26.82], [-18.470000000000027, 26.47], [-19.0, 26.25], [-19.529999999999973, 26.47], [-19.75, 27.0], [-19.649999999999977, 27.25], [-19.75, 27.5]]]]}, "2026-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.75, 27.5], [-19.529999999999973, 28.03], [-19.180000000000007, 28.18], [-19.029999999999973, 28.53], [-18.5, 28.75], [-18.25, 28.65], [-18.180000000000007, 28.68], [-18.029999999999973, 29.03], [-17.5, 29.25], [-17.25, 29.15], [-17.0, 29.25], [-16.75, 29.15], [-16.5, 29.25], [-15.970000000000027, 29.03], [-15.800000000000011, 28.62], [-15.5, 28.75], [-14.970000000000027, 28.53], [-14.75, 28.0], [-14.850000000000023, 27.75], [-14.75, 27.5], [-14.970000000000027, 26.97], [-15.319999999999993, 26.82], [-15.470000000000027, 26.47], [-16.0, 26.25], [-16.25, 26.35], [-16.5, 26.25], [-16.75, 26.35], [-16.819999999999993, 26.32], [-16.970000000000027, 25.97], [-17.5, 25.75], [-18.029999999999973, 25.97], [-18.25, 26.5], [-18.149999999999977, 26.75], [-18.180000000000007, 26.82], [-18.25, 26.85], [-18.319999999999993, 26.82], [-18.470000000000027, 26.47], [-19.0, 26.25], [-19.529999999999973, 26.47], [-19.75, 27.0], [-19.649999999999977, 27.25], [-19.75, 27.5]]]]}, "2026-03-09T11:30:00.000000000": 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[-19.75, 27.5]]]]}, "2026-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.029999999999973, 28.53], [-18.5, 28.75], [-18.25, 28.65], [-18.180000000000007, 28.68], [-18.029999999999973, 29.03], [-17.5, 29.25], [-17.25, 29.15], [-17.0, 29.25], [-16.75, 29.15], [-16.5, 29.25], [-15.970000000000027, 29.03], [-15.75, 28.5], [-15.870000000000005, 28.2], [-15.75, 28.15], [-15.5, 28.25], [-14.970000000000027, 28.03], [-14.75, 27.5], [-14.970000000000027, 26.97], [-15.319999999999993, 26.82], [-15.470000000000027, 26.47], [-16.0, 26.25], [-16.25, 26.35], [-16.5, 26.25], [-16.75, 26.35], [-16.819999999999993, 26.32], [-16.970000000000027, 25.97], [-17.5, 25.75], [-18.029999999999973, 25.97], [-18.25, 26.5], [-18.149999999999977, 26.75], [-18.19999999999999, 26.88], [-18.5, 26.75], [-18.75, 26.85], [-19.0, 26.75], [-19.529999999999973, 26.97], [-19.75, 27.5], [-19.529999999999973, 28.03], [-19.180000000000007, 28.18], [-19.029999999999973, 28.53]]]]}, 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"value": -1.35739392456141}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.664815521240257, 16.848023223876908, 16.925839742024777, 17.044048563639365, 17.422808583577535, 17.36411565144857]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.622477467854821, 13.88327306111654, 13.901185607910179, 14.352799987792991, 17.37784601847335, 17.32175725301107]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.510342812064863, -1.3822945621392762, -1.3011137470588665, -1.2432393660051275, -1.2143269373173098, -1.1980039044680098]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.1279805155262466, -1.9701537467885828, -1.9723080154387276, -1.7305034633064906, -1.284473645412163, -1.25639756006467]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.347841929591857, -1.2397250234325459, -1.1945049959716596, -1.214899794512017, -1.1727361342543787, -1.1871015616584124]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4540232770203483, -1.4107769246442958, -1.3348348855729935, -1.4090781371652958, -1.2082533207971826, -1.2359000745623068]}}