{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:26.853311", "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-Jul-12_to_2021-Jul-14_354.5_43.0"}, "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": 2021070000520}, "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": "July 12 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 14 2021"}, "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": 118789.46796741452}, "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": ["France", "Spain"]}, "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": ["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": ["Bay of Biscay"]}, "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": 43.0}, "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": 354.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "354.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 361.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.75, 44.5], [-7.53, 45.03], [-7.0, 45.25], [-6.75, 45.15], 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[-5.5, 42.25], [-6.03, 42.47], [-6.18, 42.82], [-6.53, 42.97], [-6.68, 43.32], [-7.03, 43.47], [-7.18, 43.82], [-7.53, 43.97], [-7.75, 44.5]]]]}, "2021-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.75, 44.5], [-7.53, 45.03], [-7.0, 45.25], [-6.75, 45.15], [-6.5, 45.25], [-6.25, 45.15], [-6.0, 45.25], [-5.75, 45.15], [-5.68, 45.18], [-5.53, 45.53], [-5.0, 45.75], [-4.47, 45.53], [-4.32, 45.18], [-4.25, 45.15], [-4.0, 45.25], [-3.75, 45.15], [-3.5, 45.25], [-3.25, 45.15], [-3.0, 45.25], [-2.47, 45.03], [-2.25, 44.5], [-2.37, 44.2], [-2.25, 44.15], [-2.0, 44.25], [-1.75, 44.15], [-1.68, 44.18], [-1.53, 44.53], [-1.0, 44.75], [-0.75, 44.65], [-0.5, 44.75], [-0.25, 44.65], [0.0, 44.75], [0.53, 44.53], [0.68, 44.18], [0.75, 44.15], [1.0, 44.25], [1.53, 44.03], [1.75, 43.5], [1.53, 42.97], [1.0, 42.75], [0.75, 42.85], [0.5, 42.75], [0.25, 42.85], [0.0, 42.75], [-0.25, 42.85], [-0.5, 42.75], [-0.75, 42.85], [-0.82, 42.82], [-0.85, 42.75], [-0.75, 42.5], [-0.85, 42.25], [-0.75, 42.0], [-0.97, 41.47], [-1.5, 41.25], [-1.75, 41.35], [-2.0, 41.25], [-2.53, 41.47], [-2.68, 41.82], [-2.75, 41.85], [-3.0, 41.75], [-3.25, 41.85], [-3.5, 41.75], [-3.75, 41.85], [-4.0, 41.75], [-4.25, 41.85], [-4.5, 41.75], [-5.03, 41.97], [-5.18, 42.32], [-5.25, 42.35], [-5.5, 42.25], [-6.03, 42.47], [-6.18, 42.82], [-6.53, 42.97], [-6.68, 43.32], [-7.03, 43.47], [-7.18, 43.82], [-7.53, 43.97], [-7.75, 44.5]]]]}, "2021-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.75, 44.5], [-7.53, 45.03], [-7.0, 45.25], [-6.75, 45.15], [-6.5, 45.25], [-6.25, 45.15], [-6.0, 45.25], [-5.75, 45.15], [-5.68, 45.18], [-5.53, 45.53], [-5.0, 45.75], [-4.47, 45.53], [-4.32, 45.18], [-4.25, 45.15], [-4.0, 45.25], [-3.75, 45.15], [-3.5, 45.25], [-3.25, 45.15], [-3.0, 45.25], [-2.47, 45.03], [-2.25, 44.5], [-2.37, 44.2], [-2.25, 44.15], [-2.0, 44.25], [-1.75, 44.15], [-1.68, 44.18], [-1.53, 44.53], [-1.0, 44.75], [-0.75, 44.65], [-0.5, 44.75], [-0.25, 44.65], [0.0, 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-3.392725787759347}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.857043911048095, 15.770202955188097, 16.220709345058367]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.30773610526927, 10.197467703437553, 11.679766911003469]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.371376880620466, -3.5734182274196646, -3.2333822552379092]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.426506062055921, -6.455882732421685, -5.665345184843716]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6860697753360552, -1.6459954620270298, -1.508397177044592]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9995106158349594, -2.03411553023005, -1.7194467996069593]}}