{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:12.907665", "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": "2024-Jun-11_to_2024-Jun-13_357.5_51.0"}, "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": 2024060000370}, "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": "June 11 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 13 2024"}, "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": 53255.2202520691}, "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": ["United Kingdom"]}, "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": []}, "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": 51.0}, "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": 357.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 356.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 360.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-4.18, 52.68], [-4.15, 52.75], [-4.25, 53.0], [-4.03, 53.53], [-3.5, 53.75], [-3.25, 53.65], [-3.18, 53.68], [-3.15, 53.75], [-3.18, 53.82], [-3.53, 53.97], [-3.75, 54.5], [-3.53, 55.03], [-3.0, 55.25], [-2.47, 55.03], [-2.32, 54.68], [-2.25, 54.65], [-2.0, 54.75], [-1.47, 54.53], [-1.25, 54.0], [-1.35, 53.75], [-1.25, 53.5], [-1.47, 52.97], [-2.0, 52.75], [-2.25, 52.85], [-2.32, 52.82], [-2.35, 52.75], [-2.32, 52.68], [-1.97, 52.53], [-1.82, 52.18], [-1.75, 52.15], [-1.5, 52.25], [-1.25, 52.15], [-1.0, 52.25], [-0.47, 52.03], [-0.32, 51.68], [-0.25, 51.65], [0.0, 51.75], [0.53, 51.53], [0.75, 51.0], [0.53, 50.47], [0.0, 50.25], [-0.25, 50.35], [-0.5, 50.25], [-0.75, 50.35], [-1.0, 50.25], [-1.25, 50.35], [-1.5, 50.25], [-1.75, 50.35], [-2.0, 50.25], [-2.25, 50.35], [-2.5, 50.25], [-2.75, 50.35], [-3.0, 50.25], [-3.25, 50.35], [-3.5, 50.25], [-3.75, 50.35], [-4.0, 50.25], [-4.53, 50.47], [-4.75, 51.0], [-4.54, 51.5], [-4.75, 52.0], [-4.53, 52.53], [-4.18, 52.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe", "West&Central-Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.75, 52.0], [-4.529999999999973, 52.53], [-4.180000000000007, 52.68], [-4.149999999999977, 52.75], [-4.25, 53.0], [-4.029999999999973, 53.53], [-3.5, 53.75], [-3.25, 53.65], [-3.180000000000007, 53.68], [-3.1499999999999773, 53.75], [-3.180000000000007, 53.82], [-3.5299999999999727, 53.97], [-3.75, 54.5], [-3.5299999999999727, 55.03], [-3.0, 55.25], [-2.4700000000000273, 55.03], [-2.319999999999993, 54.68], [-2.25, 54.65], [-2.0, 54.75], [-1.4700000000000273, 54.53], [-1.25, 54.0], [-1.3500000000000227, 53.75], [-1.25, 53.5], [-1.4700000000000273, 52.97], [-2.0, 52.75], [-2.25, 52.85], [-2.319999999999993, 52.82], [-2.3500000000000227, 52.75], [-2.319999999999993, 52.68], [-1.9700000000000273, 52.53], [-1.8199999999999932, 52.18], [-1.75, 52.15], [-1.5, 52.25], [-1.25, 52.15], [-1.0, 52.25], [-0.4700000000000273, 52.03], [-0.3199999999999932, 51.68], [-0.25, 51.65], [0.0, 51.75], [0.5299999999999727, 51.53], [0.75, 51.0], [0.5299999999999727, 50.47], [0.0, 50.25], [-0.25, 50.35], [-0.5, 50.25], [-0.75, 50.35], [-1.0, 50.25], [-1.25, 50.35], [-1.5, 50.25], [-1.75, 50.35], [-2.0, 50.25], [-2.25, 50.35], [-2.5, 50.25], [-2.75, 50.35], [-3.0, 50.25], [-3.25, 50.35], [-3.5, 50.25], [-3.75, 50.35], [-4.0, 50.25], [-4.529999999999973, 50.47], [-4.75, 51.0], [-4.5400000000000205, 51.5], [-4.75, 52.0]]]]}, "2024-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.75, 52.0], [-4.529999999999973, 52.53], [-4.180000000000007, 52.68], [-4.149999999999977, 52.75], [-4.25, 53.0], [-4.029999999999973, 53.53], [-3.5, 53.75], [-3.25, 53.65], [-3.180000000000007, 53.68], [-3.1499999999999773, 53.75], [-3.180000000000007, 53.82], [-3.5299999999999727, 53.97], [-3.75, 54.5], [-3.5299999999999727, 55.03], [-3.0, 55.25], 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{"type": "MultiPolygon", "coordinates": [[[[-4.75, 52.0], [-4.529999999999973, 52.53], [-4.180000000000007, 52.68], [-4.149999999999977, 52.75], [-4.25, 53.0], [-4.029999999999973, 53.53], [-3.5, 53.75], [-3.25, 53.65], [-3.180000000000007, 53.68], [-3.1499999999999773, 53.75], [-3.180000000000007, 53.82], [-3.5299999999999727, 53.97], [-3.75, 54.5], [-3.5299999999999727, 55.03], [-3.0, 55.25], [-2.4700000000000273, 55.03], [-2.319999999999993, 54.68], [-2.25, 54.65], [-2.0, 54.75], [-1.4700000000000273, 54.53], [-1.25, 54.0], [-1.3500000000000227, 53.75], [-1.25, 53.5], [-1.4700000000000273, 52.97], [-2.0, 52.75], [-2.25, 52.85], [-2.319999999999993, 52.82], [-2.3500000000000227, 52.75], [-2.319999999999993, 52.68], [-1.9700000000000273, 52.53], [-1.8199999999999932, 52.18], [-1.75, 52.15], [-1.5, 52.25], [-1.25, 52.15], [-1.0, 52.25], [-0.4700000000000273, 52.03], [-0.3199999999999932, 51.68], [-0.25, 51.65], [0.0, 51.75], [0.5299999999999727, 51.53], [0.75, 51.0], 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9.233103755655009]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.973702270792048, -2.9738548005687133, -3.226665825359044]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.591367840132932, -3.5093470099500905, -3.8275656985184128]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3994537800781561, -1.4759327967160596, -1.6598495055433362]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5177836444065644, -1.7968096711739896, -1.9890904308975326]}}