{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:43.895794", "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-Nov-12_to_2021-Nov-15_356.5_60.0"}, "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": 2021110001850}, "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": "November 12 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 15 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 66100.06705448899}, "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": 60.0}, "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": 356.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "356.5\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": 361.5}, "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": 61.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 60.53], [-4.18, 60.68], [-4.15, 60.75], [-4.25, 61.0], [-4.03, 61.53], [-3.5, 61.75], [-3.25, 61.65], [-3.0, 61.75], [-2.75, 61.65], [-2.5, 61.75], [-2.25, 61.65], [-2.0, 61.75], [-1.75, 61.65], [-1.68, 61.68], [-1.53, 62.03], [-1.0, 62.25], [-0.75, 62.15], [-0.5, 62.25], [-0.25, 62.15], [0.0, 62.25], [0.53, 62.03], [0.68, 61.68], [0.75, 61.65], [1.0, 61.75], [1.25, 61.65], [1.5, 61.75], [2.03, 61.53], [2.25, 61.0], [2.03, 60.47], [1.5, 60.25], [1.25, 60.35], [1.0, 60.25], [0.75, 60.35], [0.68, 60.32], [0.65, 60.25], [0.75, 60.0], [0.53, 59.47], [0.0, 59.25], [-0.25, 59.35], [-0.5, 59.25], [-0.75, 59.35], [-1.0, 59.25], [-1.5, 59.46], [-1.82, 59.32], [-1.85, 59.25], [-1.82, 59.18], [-1.47, 59.03], [-1.25, 58.5], [-1.47, 57.97], [-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], [-5.15, 59.25], [-5.25, 59.5], [-5.03, 60.03], [-4.68, 60.18], [-4.53, 60.53]]]]}}, "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": {"2021-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.25, 59.5], [-5.029999999999973, 60.03], [-4.680000000000007, 60.18], [-4.529999999999973, 60.53], [-4.0, 60.75], [-3.75, 60.65], [-3.5, 60.75], [-3.25, 60.65], [-3.0, 60.75], [-2.4700000000000273, 60.53], [-2.319999999999993, 60.18], [-1.9700000000000273, 60.03], [-1.75, 59.5], [-1.8500000000000227, 59.25], [-1.8199999999999932, 59.18], [-1.4700000000000273, 59.03], [-1.25, 58.5], [-1.4700000000000273, 57.97], [-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], [-5.149999999999977, 59.25], [-5.25, 59.5]]]]}, "2021-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.25, 59.5], [-5.029999999999973, 60.03], [-4.680000000000007, 60.18], [-4.529999999999973, 60.53], [-4.180000000000007, 60.68], [-4.149999999999977, 60.75], [-4.25, 61.0], [-4.029999999999973, 61.53], [-3.5, 61.75], [-3.25, 61.65], [-3.0, 61.75], [-2.75, 61.65], [-2.5, 61.75], [-2.25, 61.65], [-2.0, 61.75], [-1.75, 61.65], [-1.6800000000000068, 61.68], [-1.5299999999999727, 62.03], [-1.0, 62.25], [-0.75, 62.15], [-0.5, 62.25], [-0.25, 62.15], [0.0, 62.25], [0.5299999999999727, 62.03], [0.6800000000000068, 61.68], [0.75, 61.65], [1.0, 61.75], [1.25, 61.65], [1.5, 61.75], [2.0299999999999727, 61.53], [2.25, 61.0], [2.0299999999999727, 60.47], [1.5, 60.25], [1.25, 60.35], [1.0, 60.25], [0.75, 60.35], [0.6800000000000068, 60.32], [0.6499999999999773, 60.25], [0.75, 60.0], [0.5299999999999727, 59.47], [0.0, 59.25], [-0.25, 59.35], [-0.5, 59.25], [-0.75, 59.35], [-1.0, 59.25], [-1.5, 59.46], [-1.8199999999999932, 59.32], [-1.8500000000000227, 59.25], 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duration", "value": 3.0874974199035705}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.4056531817632307}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.038327518390929, 10.726642393208635, 11.038372432898711, 10.485861923250354]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.278359630986529, 11.180762202113044, 11.853983962977225, 10.794188423201888]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.262448713057381, 2.245806754350855, 2.635695455883867, 2.394935955299422]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.3552203855176117, 2.4266168143367963, 3.0874974199035705, 2.507796901169172]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.37550078970657, 1.3016386435534273, 1.5110681044398908, 1.3228718779563364]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4645260941190477, 1.461467614008076, 1.7973085983741866, 1.3853641569411002]}}