{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:14.670672", "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": "2016-Sep-28_to_2016-Sep-30_359.0_32.0"}, "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": 2016090000674}, "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": "September 28 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 30 2016"}, "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": 135219.2685704145}, "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": ["Algeria", "Morocco"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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": 32.0}, "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": -1.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "359.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -2.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 5.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.53, 33.03], [-2.0, 33.25], [-1.75, 33.15], [-1.5, 33.25], 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32.25], [-2.75, 32.5], [-2.53, 33.03]]]]}, "2016-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.53, 33.03], [-2.0, 33.25], [-1.75, 33.15], [-1.5, 33.25], [-1.25, 33.15], [-1.0, 33.25], [-0.75, 33.15], [-0.68, 33.18], [-0.53, 33.53], [0.0, 33.75], [0.25, 33.65], [0.5, 33.75], [0.75, 33.65], [1.0, 33.75], [1.25, 33.65], [1.32, 33.68], [1.47, 34.03], [2.0, 34.25], [2.25, 34.15], [2.5, 34.25], [2.8, 34.13], [2.97, 34.53], [3.5, 34.75], [3.75, 34.65], [4.0, 34.75], [4.25, 34.65], [4.5, 34.75], [4.75, 34.65], [5.0, 34.75], [5.25, 34.65], [5.5, 34.75], [6.03, 34.53], [6.25, 34.0], [6.15, 33.75], [6.25, 33.5], [6.15, 33.25], [6.25, 33.0], [6.03, 32.47], [5.5, 32.25], [5.25, 32.35], [5.18, 32.32], [5.03, 31.97], [4.5, 31.75], [4.25, 31.85], [4.18, 31.82], [4.03, 31.47], [3.5, 31.25], [3.25, 31.35], [3.0, 31.25], [2.75, 31.35], [2.5, 31.25], [2.25, 31.35], [2.0, 31.25], [1.75, 31.35], [1.5, 31.25], [1.25, 31.35], [1.0, 31.25], [0.75, 31.35], [0.68, 31.32], [0.53, 30.97], [0.0, 30.75], [-0.25, 30.85], [-0.5, 30.75], [-0.75, 30.85], [-1.0, 30.75], [-1.53, 30.97], [-1.68, 31.32], [-1.75, 31.35], [-2.0, 31.25], [-2.53, 31.47], [-2.75, 32.0], [-2.65, 32.25], [-2.75, 32.5], [-2.53, 33.03]]]]}, "2016-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.53, 33.03], [-2.0, 33.25], [-1.75, 33.15], [-1.5, 33.25], [-1.25, 33.15], [-1.0, 33.25], [-0.75, 33.15], [-0.68, 33.18], [-0.53, 33.53], [0.0, 33.75], [0.25, 33.65], [0.5, 33.75], [0.75, 33.65], [1.0, 33.75], [1.25, 33.65], [1.32, 33.68], [1.47, 34.03], [2.0, 34.25], [2.25, 34.15], [2.5, 34.25], [2.8, 34.13], [2.97, 34.53], [3.5, 34.75], [3.75, 34.65], [4.0, 34.75], [4.25, 34.65], [4.5, 34.75], [4.75, 34.65], [5.0, 34.75], [5.25, 34.65], [5.5, 34.75], [6.03, 34.53], [6.25, 34.0], [6.15, 33.75], [6.25, 33.5], [6.15, 33.25], [6.25, 33.0], [6.03, 32.47], [5.5, 32.25], [5.25, 32.35], [5.18, 32.32], [5.03, 31.97], [4.5, 31.75], [4.25, 31.85], [4.18, 31.82], [4.03, 31.47], [3.5, 31.25], 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[14.284781336223034, 13.311006541666359, 15.66426088161603]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.220065047856858, -5.638096865312737, -4.621353300597699]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.770365071171568, -8.440006279283125, -5.743934642273189]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7408616607972571, -1.8469239771215809, -1.4956646756617926]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.293108707165836, -2.793605401274456, -1.8816945917835501]}}