{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:59.012622", "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-Nov-11_to_2025-Nov-13_18.0_57.0"}, "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": 2025110001648}, "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 11 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 13 2025"}, "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": 80534.81555898156}, "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": ["Finland", "Sweden"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "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": ["Baltic 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": 57.0}, "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": 18.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[16.25, 58.5], [16.47, 59.03], [17.0, 59.25], [17.25, 59.15], [17.5, 59.25], [17.75, 59.15], [17.82, 59.18], [17.97, 59.53], 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regions affected", "value": ["N.Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.0, 57.75], [16.47, 57.97], [16.25, 58.5], [16.47, 59.03], [17.0, 59.25], [17.25, 59.15], [17.5, 59.25], [17.75, 59.15], [17.82, 59.18], [17.97, 59.53], [18.5, 59.75], [18.75, 59.65], [18.82, 59.68], [18.85, 59.75], [18.75, 60.0], [18.97, 60.53], [19.5, 60.75], [19.75, 60.65], [20.0, 60.75], [20.25, 60.65], [20.5, 60.75], [20.75, 60.65], [21.0, 60.75], [21.25, 60.65], [21.5, 60.75], [21.75, 60.65], [22.0, 60.75], [22.25, 60.65], [22.5, 60.75], [23.03, 60.53], [23.18, 60.18], [23.53, 60.03], [23.75, 59.5], [23.53, 58.97], [23.0, 58.75], [22.75, 58.85], [22.68, 58.82], [22.53, 58.47], [22.18, 58.32], [22.15, 58.25], [22.25, 58.0], [22.03, 57.47], [21.5, 57.25], [21.25, 57.35], [21.18, 57.32], [21.03, 56.97], [20.5, 56.75], [20.25, 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9.751220804850334]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.824180857340536, 10.608691151936853, 11.243618265787802]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.1367394252135523, 4.012084083436259, 3.8214545151012462]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.541534945638034, 4.393023741466834, 4.549558211242299]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.325728926841296, 1.7016795204850064, 1.6363302778205213]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5240065945844612, 1.8728230493535325, 2.1239819518283194]}}