{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:57:30.786487", "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": "2025-Oct-10_to_2025-Oct-15_8.5_61.0"}, "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": 2025100001426}, "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": "October 10 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 15 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 85285.2604966269}, "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": ["Norway"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "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": ["Kattegat", "North Sea", "Skagerrak"]}, "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": 61.0}, "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": 8.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "8.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 4.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 12.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.75, 58.5], [4.97, 59.03], [5.5, 59.25], [6.03, 59.03], [6.18, 58.68], [6.25, 58.65], [6.5, 58.75], [6.75, 58.65], [6.82, 58.68], [6.85, 58.75], [6.75, 59.0], [6.85, 59.25], [6.75, 59.5], [6.97, 60.03], [7.5, 60.25], [7.75, 60.15], [7.82, 60.18], [7.85, 60.25], [7.75, 60.5], [7.85, 60.75], [7.75, 61.0], [7.97, 61.53], [8.5, 61.75], [8.75, 61.65], [9.0, 61.75], [9.53, 61.53], [9.75, 61.0], [9.65, 60.75], [9.75, 60.5], [9.65, 60.25], [9.75, 60.0], [9.53, 59.47], [9.18, 59.32], [9.15, 59.25], [9.2, 59.13], [9.5, 59.25], [9.75, 59.15], [10.0, 59.25], [10.25, 59.15], [10.5, 59.25], [10.75, 59.15], [11.0, 59.25], [11.53, 59.03], [11.75, 58.5], [11.65, 58.25], [11.68, 58.18], [12.03, 58.03], [12.18, 57.68], [12.53, 57.53], [12.75, 57.0], [12.53, 56.47], [12.0, 56.25], [11.47, 56.47], [11.32, 56.82], [11.25, 56.85], [11.0, 56.75], [10.75, 56.85], [10.5, 56.75], [10.0, 56.96], [9.5, 56.75], [9.25, 56.85], [9.0, 56.75], [8.47, 56.97], [8.32, 57.32], [8.25, 57.35], [8.0, 57.25], [7.75, 57.35], [7.5, 57.25], [7.25, 57.35], [7.0, 57.25], [6.75, 57.35], [6.5, 57.25], [6.25, 57.35], [6.0, 57.25], [5.47, 57.47], [5.32, 57.82], [4.97, 57.97], [4.75, 58.5]]]]}, "2025-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.75, 58.5], [4.97, 59.03], [5.5, 59.25], [6.03, 59.03], [6.18, 58.68], [6.25, 58.65], [6.5, 58.75], [6.75, 58.65], [6.82, 58.68], [6.85, 58.75], [6.75, 59.0], [6.85, 59.25], [6.75, 59.5], [6.97, 60.03], [7.5, 60.25], [7.75, 60.15], [7.82, 60.18], [7.85, 60.25], [7.75, 60.5], [7.85, 60.75], [7.75, 61.0], [7.97, 61.53], [8.5, 61.75], [8.75, 61.65], [9.0, 61.75], [9.53, 61.53], [9.75, 61.0], [9.65, 60.75], [9.75, 60.5], [9.65, 60.25], [9.75, 60.0], [9.53, 59.47], [9.18, 59.32], [9.15, 59.25], [9.2, 59.13], [9.5, 59.25], [9.75, 59.15], [10.0, 59.25], [10.25, 59.15], [10.5, 59.25], [10.75, 59.15], [11.0, 59.25], [11.53, 59.03], [11.75, 58.5], [11.65, 58.25], [11.68, 58.18], [12.03, 58.03], [12.18, 57.68], [12.53, 57.53], [12.75, 57.0], [12.53, 56.47], [12.0, 56.25], [11.47, 56.47], [11.32, 56.82], [11.25, 56.85], [11.0, 56.75], [10.75, 56.85], [10.5, 56.75], [10.0, 56.96], [9.5, 56.75], [9.25, 56.85], [9.0, 56.75], [8.5, 56.96], [8.0, 56.75], [7.5, 56.96], [7.0, 56.75], [6.47, 56.97], [6.32, 57.32], [6.25, 57.35], [6.0, 57.25], [5.47, 57.47], [5.32, 57.82], [4.97, 57.97], [4.75, 58.5]]]]}, "2025-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.25, 58.5], [4.47, 59.03], [5.0, 59.25], [5.25, 59.15], [5.5, 59.25], [6.03, 59.03], [6.18, 58.68], [6.25, 58.65], [6.5, 58.75], [6.75, 58.65], [6.82, 58.68], [6.85, 58.75], [6.75, 59.0], [6.85, 59.25], [6.75, 59.5], [6.97, 60.03], [7.5, 60.25], [7.75, 60.15], [7.82, 60.18], [7.85, 60.25], [7.75, 60.5], [7.85, 60.75], [7.75, 61.0], [7.97, 61.53], [8.5, 61.75], [8.75, 61.65], [9.0, 61.75], [9.53, 61.53], [9.75, 61.0], [9.65, 60.75], [9.75, 60.5], [9.65, 60.25], [9.75, 60.0], [9.53, 59.47], [9.18, 59.32], [9.15, 59.25], [9.2, 59.13], [9.5, 59.25], [9.75, 59.15], [10.0, 59.25], [10.25, 59.15], [10.5, 59.25], [10.75, 59.15], [11.0, 59.25], [11.53, 59.03], [11.75, 58.5], [11.65, 58.25], [11.68, 58.18], [12.03, 58.03], [12.18, 57.68], [12.53, 57.53], [12.75, 57.0], [12.53, 56.47], [12.0, 56.25], [11.47, 56.47], [11.32, 56.82], [11.25, 56.85], [11.0, 56.75], [10.75, 56.85], [10.5, 56.75], [10.0, 56.96], [9.5, 56.75], [9.25, 56.85], [9.0, 56.75], [8.5, 56.96], [8.0, 56.75], [7.5, 56.96], [7.0, 56.75], [6.5, 56.96], [6.0, 56.75], [5.47, 56.97], [5.32, 57.32], [4.97, 57.47], [4.82, 57.82], [4.47, 57.97], [4.25, 58.5]]]]}, "2025-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.0, 59.25], [5.53, 59.03], [5.68, 58.68], [6.03, 58.53], [6.18, 58.18], [6.5, 58.04], [7.0, 58.25], [7.3, 58.13], [7.47, 58.53], [8.0, 58.75], [8.25, 58.65], [8.5, 58.75], [8.75, 58.65], [9.0, 58.75], [9.53, 58.53], [9.75, 58.0], [9.65, 57.75], [9.75, 57.5], [9.53, 56.97], [9.0, 56.75], [8.5, 56.96], [8.0, 56.75], [7.5, 56.96], [7.0, 56.75], [6.5, 56.96], [6.0, 56.75], [5.47, 56.97], [5.32, 57.32], [5.25, 57.35], [5.0, 57.25], [4.47, 57.47], [4.25, 58.0], [4.35, 58.25], [4.25, 58.5], [4.47, 59.03], [5.0, 59.25]]], [[[6.97, 62.53], [7.5, 62.75], [7.75, 62.65], [8.0, 62.75], [8.25, 62.65], [8.32, 62.68], [8.47, 63.03], [9.0, 63.25], [9.25, 63.15], [9.5, 63.25], [10.03, 63.03], [10.18, 62.68], [10.53, 62.53], [10.75, 62.0], [10.53, 61.47], [10.0, 61.25], [9.75, 61.35], [9.68, 61.32], [9.53, 60.97], [9.18, 60.82], [9.03, 60.47], [8.5, 60.25], [8.25, 60.35], [8.0, 60.25], [7.47, 60.47], [7.25, 61.0], [7.35, 61.25], [7.32, 61.32], [6.97, 61.47], [6.75, 62.0], [6.97, 62.53]]]]}, "2025-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.0, 59.25], [5.53, 59.03], [5.68, 58.68], [6.03, 58.53], [6.18, 58.18], [6.5, 58.04], [7.0, 58.25], [7.53, 58.03], [7.75, 57.5], [7.53, 56.97], [7.0, 56.75], [6.5, 56.96], [6.0, 56.75], [5.47, 56.97], [5.32, 57.32], [5.25, 57.35], [5.0, 57.25], [4.47, 57.47], [4.25, 58.0], [4.35, 58.25], [4.25, 58.5], [4.47, 59.03], [5.0, 59.25]]], [[[6.97, 62.53], [7.5, 62.75], [7.75, 62.65], [8.0, 62.75], [8.25, 62.65], [8.32, 62.68], [8.47, 63.03], [9.0, 63.25], [9.25, 63.15], [9.5, 63.25], [10.03, 63.03], [10.18, 62.68], [10.53, 62.53], [10.75, 62.0], [10.53, 61.47], [10.0, 61.25], [9.75, 61.35], [9.68, 61.32], [9.53, 60.97], [9.18, 60.82], [9.03, 60.47], [8.5, 60.25], [8.25, 60.35], [8.0, 60.25], [7.47, 60.47], [7.25, 61.0], [7.35, 61.25], [7.32, 61.32], [6.97, 61.47], [6.75, 62.0], [6.97, 62.53]]]]}, "2025-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.0, 59.25], [5.53, 59.03], [5.68, 58.68], [6.03, 58.53], [6.18, 58.18], [6.53, 58.03], [6.75, 57.5], [6.53, 56.97], [6.0, 56.75], [5.47, 56.97], [5.32, 57.32], [5.25, 57.35], [5.0, 57.25], [4.47, 57.47], [4.25, 58.0], [4.35, 58.25], [4.25, 58.5], [4.47, 59.03], [5.0, 59.25]]], [[[6.97, 62.53], [7.5, 62.75], [7.75, 62.65], [8.0, 62.75], [8.25, 62.65], [8.32, 62.68], [8.47, 63.03], [9.0, 63.25], [9.25, 63.15], [9.5, 63.25], [10.03, 63.03], [10.18, 62.68], [10.53, 62.53], [10.75, 62.0], [10.53, 61.47], [10.0, 61.25], [9.75, 61.35], [9.68, 61.32], [9.53, 60.97], [9.18, 60.82], [9.03, 60.47], [8.5, 60.25], [8.25, 60.35], [8.0, 60.25], [7.47, 60.47], [7.25, 61.0], [7.35, 61.25], [7.32, 61.32], [6.97, 61.47], [6.75, 62.0], [6.97, 62.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.957469313735146}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.875253565391183}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.706576990198243, 12.232195924457812, 12.024252207686288, 8.384595987071123, 7.909227413601343, 6.594347815420122]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.169829305013025, 14.373621877034509, 14.346289571126306, 13.743033345540368, 13.435567474365257, 13.238735453287802]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.3335795300166478, 3.8560849314376084, 3.604817610527176, 3.717541240035211, 5.172488888674833, 4.557235634639757]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.968763128001228, 6.957469313735146, 5.4467238637807895, 5.069582201868286, 6.60005405301132, 5.753588718969979]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4527679881911018, 1.6491193202044003, 1.5976417363496729, 1.3921900212674, 1.6998524286702805, 1.4448374326652744]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6431453781525405, 2.2602271672678085, 1.981250608481832, 1.604025208195981, 1.9643768106945259, 1.692257950727891]}}