{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:39.800451", "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-Feb-18_to_2024-Feb-20_357.0_58.5"}, "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": 2024020001573}, "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": "February 18 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 20 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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 101889.19200419623}, "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": ["Atlantic Ocean", "North Sea", "Norwegian Sea"]}, "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": 58.5}, "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": 357.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "357.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 355.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 361.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 58.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-4.68, 60.68], [-4.53, 61.03], [-4.18, 61.18], [-4.15, 61.25], [-4.25, 61.5], [-4.15, 61.75], [-4.25, 62.0], [-4.15, 62.25], [-4.18, 62.32], [-4.25, 62.35], [-4.5, 62.25], [-5.03, 62.47], [-5.25, 63.0], [-5.03, 63.53], [-4.5, 63.75], [-4.25, 63.65], [-4.0, 63.75], [-3.75, 63.65], [-3.5, 63.75], [-2.97, 63.53], [-2.82, 63.18], [-2.47, 63.03], [-2.32, 62.68], [-1.97, 62.53], [-1.82, 62.18], [-1.75, 62.15], [-1.5, 62.25], [-1.25, 62.15], [-1.0, 62.25], [-0.75, 62.15], [-0.68, 62.18], [-0.53, 62.53], [0.0, 62.75], [0.25, 62.65], [0.5, 62.75], [1.03, 62.53], [1.18, 62.18], [1.53, 62.03], [1.75, 61.5], [1.65, 61.25], [1.75, 61.0], [1.53, 60.47], [1.0, 60.25], [0.75, 60.35], [0.68, 60.32], [0.53, 59.97], [0.18, 59.82], [0.03, 59.47], [-0.32, 59.32], [-0.35, 59.25], [-0.25, 59.0], [-0.35, 58.75], [-0.25, 58.5], [-0.47, 57.97], [-1.0, 57.75], [-1.25, 57.85], [-1.5, 57.75], [-1.75, 57.85], [-2.0, 57.75], [-2.25, 57.85], [-2.5, 57.75], [-2.75, 57.85], [-3.0, 57.75], [-3.53, 57.97], [-3.68, 58.32], [-3.75, 58.35], [-4.0, 58.25], [-4.25, 58.35], [-4.5, 58.25], [-5.03, 58.47], [-5.25, 59.0], [-5.04, 59.5], [-5.25, 60.0], [-5.03, 60.53], [-4.68, 60.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.25, 60.0], [-5.029999999999973, 60.53], [-4.680000000000007, 60.68], [-4.529999999999973, 61.03], [-4.180000000000007, 61.18], [-4.149999999999977, 61.25], [-4.25, 61.5], [-4.149999999999977, 61.75], [-4.25, 62.0], [-4.149999999999977, 62.25], [-4.180000000000007, 62.32], [-4.25, 62.35], [-4.5, 62.25], [-5.029999999999973, 62.47], [-5.25, 63.0], [-5.029999999999973, 63.53], [-4.5, 63.75], [-4.25, 63.65], [-4.0, 63.75], [-3.75, 63.65], [-3.5, 63.75], [-2.9700000000000273, 63.53], [-2.819999999999993, 63.18], [-2.4700000000000273, 63.03], [-2.319999999999993, 62.68], [-1.9700000000000273, 62.53], [-1.8199999999999932, 62.18], [-1.75, 62.15], [-1.5, 62.25], [-1.25, 62.15], [-1.0, 62.25], [-0.75, 62.15], [-0.6800000000000068, 62.18], [-0.5299999999999727, 62.53], [0.0, 62.75], [0.25, 62.65], [0.5, 62.75], [1.0299999999999727, 62.53], [1.1800000000000068, 62.18], [1.5299999999999727, 62.03], [1.75, 61.5], [1.6499999999999773, 61.25], [1.75, 61.0], [1.5299999999999727, 60.47], [1.0, 60.25], [0.75, 60.35], [0.6800000000000068, 60.32], [0.5299999999999727, 59.97], [0.18000000000000682, 59.82], [0.029999999999972715, 59.47], [-0.3199999999999932, 59.32], [-0.35000000000002274, 59.25], [-0.25, 59.0], [-0.35000000000002274, 58.75], [-0.25, 58.5], [-0.4700000000000273, 57.97], [-1.0, 57.75], [-1.25, 57.85], [-1.5, 57.75], [-1.75, 57.85], [-2.0, 57.75], [-2.25, 57.85], [-2.5, 57.75], [-2.75, 57.85], [-3.0, 57.75], [-3.5299999999999727, 57.97], [-3.680000000000007, 58.32], [-3.75, 58.35], [-4.0, 58.25], [-4.25, 58.35], [-4.5, 58.25], [-5.029999999999973, 58.47], [-5.25, 59.0], [-5.0400000000000205, 59.5], [-5.25, 60.0]]]]}, "2024-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.25, 60.0], [-5.029999999999973, 60.53], [-4.680000000000007, 60.68], [-4.529999999999973, 61.03], [-4.180000000000007, 61.18], [-4.149999999999977, 61.25], [-4.25, 61.5], [-4.149999999999977, 61.75], [-4.25, 62.0], [-4.149999999999977, 62.25], [-4.180000000000007, 62.32], [-4.25, 62.35], [-4.5, 62.25], [-5.029999999999973, 62.47], [-5.25, 63.0], [-5.029999999999973, 63.53], [-4.5, 63.75], [-4.25, 63.65], [-4.0, 63.75], [-3.75, 63.65], [-3.5, 63.75], [-2.9700000000000273, 63.53], [-2.819999999999993, 63.18], [-2.4700000000000273, 63.03], [-2.319999999999993, 62.68], [-1.9700000000000273, 62.53], [-1.8199999999999932, 62.18], [-1.75, 62.15], [-1.5, 62.25], [-1.25, 62.15], [-1.0, 62.25], [-0.75, 62.15], [-0.6800000000000068, 62.18], [-0.5299999999999727, 62.53], [0.0, 62.75], [0.25, 62.65], [0.5, 62.75], [1.0299999999999727, 62.53], [1.1800000000000068, 62.18], [1.5299999999999727, 62.03], [1.75, 61.5], [1.6499999999999773, 61.25], [1.75, 61.0], [1.5299999999999727, 60.47], [1.0, 60.25], [0.75, 60.35], [0.6800000000000068, 60.32], [0.5299999999999727, 59.97], [0.18000000000000682, 59.82], [0.029999999999972715, 59.47], [-0.3199999999999932, 59.32], [-0.35000000000002274, 59.25], [-0.25, 59.0], [-0.35000000000002274, 58.75], [-0.25, 58.5], [-0.4700000000000273, 57.97], [-1.0, 57.75], [-1.25, 57.85], [-1.5, 57.75], [-1.75, 57.85], [-2.0, 57.75], [-2.25, 57.85], [-2.5, 57.75], [-2.75, 57.85], [-3.0, 57.75], [-3.5299999999999727, 57.97], [-3.680000000000007, 58.32], [-3.75, 58.35], [-4.0, 58.25], [-4.25, 58.35], [-4.5, 58.25], [-5.029999999999973, 58.47], [-5.25, 59.0], [-5.0400000000000205, 59.5], [-5.25, 60.0]]]]}, "2024-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.25, 60.0], [-5.029999999999973, 60.53], [-4.680000000000007, 60.68], [-4.529999999999973, 61.03], [-4.180000000000007, 61.18], [-4.149999999999977, 61.25], [-4.25, 61.5], [-4.149999999999977, 61.75], [-4.25, 62.0], [-4.149999999999977, 62.25], [-4.180000000000007, 62.32], [-4.25, 62.35], [-4.5, 62.25], [-5.029999999999973, 62.47], [-5.25, 63.0], [-5.029999999999973, 63.53], [-4.5, 63.75], [-4.25, 63.65], [-4.0, 63.75], [-3.75, 63.65], [-3.5, 63.75], [-2.9700000000000273, 63.53], [-2.819999999999993, 63.18], [-2.4700000000000273, 63.03], [-2.319999999999993, 62.68], [-1.9700000000000273, 62.53], [-1.8199999999999932, 62.18], [-1.75, 62.15], [-1.5, 62.25], [-1.25, 62.15], [-1.0, 62.25], [-0.75, 62.15], [-0.6800000000000068, 62.18], [-0.5299999999999727, 62.53], [0.0, 62.75], [0.25, 62.65], [0.5, 62.75], [1.0299999999999727, 62.53], [1.1800000000000068, 62.18], [1.5299999999999727, 62.03], [1.75, 61.5], [1.6499999999999773, 61.25], [1.75, 61.0], [1.5299999999999727, 60.47], [1.0, 60.25], [0.75, 60.35], [0.6800000000000068, 60.32], [0.5299999999999727, 59.97], [0.18000000000000682, 59.82], [0.029999999999972715, 59.47], [-0.3199999999999932, 59.32], [-0.35000000000002274, 59.25], [-0.25, 59.0], [-0.35000000000002274, 58.75], [-0.25, 58.5], [-0.4700000000000273, 57.97], [-1.0, 57.75], [-1.25, 57.85], [-1.5, 57.75], [-1.75, 57.85], [-2.0, 57.75], [-2.25, 57.85], [-2.5, 57.75], [-2.75, 57.85], [-3.0, 57.75], [-3.5299999999999727, 57.97], [-3.680000000000007, 58.32], [-3.75, 58.35], [-4.0, 58.25], [-4.25, 58.35], [-4.5, 58.25], [-5.029999999999973, 58.47], [-5.25, 59.0], [-5.0400000000000205, 59.5], [-5.25, 60.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.144031247808698}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.5192440295512424}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.52702250134621, 8.356871525065003, 8.268555439450608]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.729417504692321, 9.207231815007788, 8.709402192876041]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.5629453901322163, 2.5146752584783503, 2.4801114400431605]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.144031247808698, 2.75071516027856, 2.871392079618829]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5295708883181858, 1.4627974007593145, 1.3871858880424028]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8691883031317165, 1.59083404759559, 1.5344948353784582]}}