{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:01.639911", "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-Dec-03_to_2025-Dec-05_29.0_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": 2025120001262}, "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": "December 03 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 05 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": 53917.60187432391}, "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": ["Belarus", "Russian Federation", "Ukraine"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["West&Central-Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 29.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "29.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 28.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 32.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, 51.53], [28.32, 51.68], [28.35, 51.75], [28.25, 52.0], [28.47, 52.53], [29.0, 52.75], [29.25, 52.65], [29.5, 52.75], [29.75, 52.65], [30.0, 52.75], [30.25, 52.65], [30.5, 52.75], [30.75, 52.65], [30.82, 52.68], [30.97, 53.03], [31.5, 53.25], [31.75, 53.15], [32.0, 53.25], [32.25, 53.15], [32.5, 53.25], [33.03, 53.03], [33.25, 52.5], [33.15, 52.25], [33.25, 52.0], [33.03, 51.47], [32.5, 51.25], [32.25, 51.35], [32.18, 51.32], [32.03, 50.97], [31.68, 50.82], [31.53, 50.47], [31.18, 50.32], [31.03, 49.97], [30.5, 49.75], [30.25, 49.85], [30.0, 49.75], [29.75, 49.85], [29.5, 49.75], [29.25, 49.85], [29.0, 49.75], [28.75, 49.85], [28.5, 49.75], [27.97, 49.97], [27.75, 50.5], [27.85, 50.75], [27.75, 51.0], [27.97, 51.53]]]]}, "2025-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, 51.53], [28.32, 51.68], [28.35, 51.75], [28.25, 52.0], [28.47, 52.53], [29.0, 52.75], [29.25, 52.65], [29.5, 52.75], [29.75, 52.65], [30.0, 52.75], [30.25, 52.65], [30.5, 52.75], [30.75, 52.65], [30.82, 52.68], [30.97, 53.03], [31.5, 53.25], [31.75, 53.15], [32.0, 53.25], [32.25, 53.15], [32.5, 53.25], [33.03, 53.03], [33.25, 52.5], [33.15, 52.25], [33.25, 52.0], [33.03, 51.47], [32.5, 51.25], [32.25, 51.35], [32.18, 51.32], [32.03, 50.97], [31.68, 50.82], [31.53, 50.47], [31.18, 50.32], [31.03, 49.97], [30.5, 49.75], [30.25, 49.85], [30.0, 49.75], [29.75, 49.85], [29.5, 49.75], [29.25, 49.85], [29.0, 49.75], [28.75, 49.85], [28.5, 49.75], [27.97, 49.97], [27.75, 50.5], [27.85, 50.75], [27.75, 51.0], [27.97, 51.53]]]]}, "2025-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, 51.53], [28.32, 51.68], [28.35, 51.75], [28.25, 52.0], [28.47, 52.53], [29.0, 52.75], [29.25, 52.65], [29.5, 52.75], [29.75, 52.65], [30.0, 52.75], [30.25, 52.65], [30.5, 52.75], [30.75, 52.65], [30.82, 52.68], [30.97, 53.03], [31.5, 53.25], [31.75, 53.15], [32.0, 53.25], [32.25, 53.15], [32.5, 53.25], [33.03, 53.03], [33.25, 52.5], [33.15, 52.25], [33.25, 52.0], [33.03, 51.47], [32.5, 51.25], [32.25, 51.35], [32.18, 51.32], [32.03, 50.97], [31.68, 50.82], [31.53, 50.47], [31.18, 50.32], [31.03, 49.97], [30.5, 49.75], [30.25, 49.85], [30.0, 49.75], [29.75, 49.85], [29.5, 49.75], [29.25, 49.85], [29.0, 49.75], [28.75, 49.85], [28.5, 49.75], [27.97, 49.97], [27.75, 50.5], [27.85, 50.75], [27.75, 51.0], [27.97, 51.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.555396289642999}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.1070030441607654}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.490788850330148, 5.338369714646149, 4.250262015206488]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.4037643432617415, 6.51481653849288, 5.196338907877646]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.839044338782137, 6.76026069554447, 5.72170409815569]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.372894146107569, 7.555396289642999, 6.497987854818064]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.196853378199098, 1.417873672427373, 1.2004420889760414]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.320534837293243, 1.6339741490408866, 1.3582782975831527]}}