{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:20.327684", "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-Apr-20_to_2025-Apr-23_17.0_46.0"}, "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": 2025040002054}, "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": "April 20 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 23 2025"}, "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": 62343.57233967514}, "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": ["Bosnia and Herzegovina", "Croatia", "Hungary", "Serbia", "Slovenia"]}, "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": ["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": 46.0}, "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": 17.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 15.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 20.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.88, 45.8], [15.47, 45.97], [15.25, 46.5], [15.47, 47.03], [16.0, 47.25], [16.25, 47.15], [16.5, 47.25], [16.75, 47.15], [17.0, 47.25], [17.53, 47.03], [17.75, 46.5], [17.97, 47.03], [18.32, 47.18], [18.47, 47.53], [19.0, 47.75], [19.25, 47.65], [19.5, 47.75], [20.03, 47.53], [20.25, 47.0], [20.03, 46.47], [19.68, 46.32], [19.53, 45.97], [19.0, 45.75], [18.75, 45.85], [18.5, 45.75], [18.07, 45.93], [18.18, 45.68], [18.53, 45.53], [18.75, 45.0], [18.53, 44.47], [18.0, 44.25], [17.75, 44.35], [17.5, 44.25], [17.25, 44.35], [17.0, 44.25], [16.75, 44.35], [16.5, 44.25], [15.97, 44.47], [15.75, 45.0], [15.85, 45.25], [15.75, 45.5], [15.88, 45.8]], [[17.65, 46.25], [17.68, 46.18], [17.93, 46.07], [17.75, 46.5], [17.65, 46.25]]]]}, "2025-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.88, 45.8], [15.47, 45.97], [15.25, 46.5], [15.47, 47.03], [16.0, 47.25], [16.25, 47.15], [16.5, 47.25], [16.75, 47.15], [17.0, 47.25], [17.5, 47.04], [17.82, 47.18], [17.97, 47.53], [18.5, 47.75], [18.75, 47.65], [19.0, 47.75], [19.25, 47.65], [19.5, 47.75], [20.03, 47.53], [20.18, 47.18], [20.53, 47.03], [20.75, 46.5], [20.53, 45.97], [20.18, 45.82], [20.03, 45.47], [19.68, 45.32], [19.65, 45.25], [19.75, 45.0], [19.53, 44.47], [19.0, 44.25], [18.75, 44.35], [18.5, 44.25], [18.25, 44.35], [18.0, 44.25], [17.75, 44.35], [17.5, 44.25], [17.25, 44.35], [17.0, 44.25], [16.75, 44.35], [16.5, 44.25], [15.97, 44.47], [15.75, 45.0], [15.85, 45.25], [15.75, 45.5], [15.88, 45.8]]]]}, "2025-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.88, 45.8], [15.47, 45.97], [15.25, 46.5], [15.47, 47.03], [16.0, 47.25], [16.25, 47.15], [16.5, 47.25], [16.75, 47.15], [17.0, 47.25], [17.5, 47.04], [17.82, 47.18], [17.97, 47.53], [18.5, 47.75], [18.75, 47.65], [19.0, 47.75], [19.25, 47.65], [19.5, 47.75], [20.03, 47.53], [20.18, 47.18], [20.53, 47.03], [20.75, 46.5], [20.53, 45.97], [20.18, 45.82], [20.03, 45.47], [19.68, 45.32], [19.65, 45.25], [19.75, 45.0], [19.53, 44.47], [19.0, 44.25], [18.75, 44.35], [18.5, 44.25], [18.25, 44.35], [18.0, 44.25], [17.75, 44.35], [17.5, 44.25], [17.25, 44.35], [17.0, 44.25], [16.75, 44.35], [16.5, 44.25], [15.97, 44.47], [15.75, 45.0], [15.85, 45.25], [15.75, 45.5], [15.88, 45.8]]]]}, "2025-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.47, 46.53], [17.0, 46.75], [17.25, 46.65], [17.32, 46.68], [17.47, 47.03], [17.82, 47.18], [17.97, 47.53], [18.5, 47.75], [18.75, 47.65], [19.0, 47.75], [19.25, 47.65], [19.5, 47.75], [20.03, 47.53], [20.18, 47.18], [20.53, 47.03], [20.75, 46.5], [20.53, 45.97], [20.18, 45.82], [20.03, 45.47], [19.68, 45.32], [19.65, 45.25], [19.75, 45.0], [19.53, 44.47], [19.0, 44.25], [18.75, 44.35], [18.5, 44.25], [18.25, 44.35], [18.0, 44.25], [17.75, 44.35], [17.5, 44.25], [16.97, 44.47], [16.82, 44.82], [16.47, 44.97], [16.25, 45.5], [16.35, 45.75], [16.25, 46.0], [16.47, 46.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.3201298398639665}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.000684645866145}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.1208992852105, 18.433695247255457, 18.288069573764233, 18.273469654027963]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.871186828613304, 19.54761912027999, 19.384614562988304, 18.96888122558596]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.556514750169197, 5.471239980129305, 5.042521507702384, 4.644300939282306]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.974294358789564, 6.3201298398639665, 5.6191623586055925, 5.095188314161248]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3527607752724513, 1.6407349012312524, 1.5248195677756813, 1.4078678990218294]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4426444337841335, 1.8828513256172883, 1.685218156607398, 1.5435616029512376]}}