{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:53.431431", "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-Sep-04_to_2025-Sep-07_39.0_43.0"}, "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": 2025090001253}, "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": "September 04 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 07 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": 59286.8459395497}, "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": ["Russian Federation"]}, "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": ["Black 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": 43.0}, "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": 39.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 39.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[36.25, 43.15], [36.5, 43.25], [36.75, 43.15], [36.82, 43.18], [36.97, 43.53], [37.32, 43.68], [37.47, 44.03], [38.0, 44.25], [38.25, 44.15], [38.5, 44.25], [38.75, 44.15], [39.0, 44.25], [39.53, 44.03], [39.68, 43.68], [40.03, 43.53], [40.25, 43.0], [40.15, 42.75], [40.25, 42.5], [40.15, 42.25], [40.25, 42.0], [40.03, 41.47], [39.5, 41.25], [39.25, 41.35], [39.18, 41.32], [39.03, 40.97], [38.5, 40.75], [38.25, 40.85], [38.0, 40.75], [37.75, 40.85], [37.5, 40.75], [36.97, 40.97], [36.82, 41.32], [36.75, 41.35], [36.5, 41.25], [36.25, 41.35], [36.0, 41.25], [35.47, 41.47], [35.25, 42.0], [35.35, 42.25], [35.25, 42.5], [35.47, 43.03], [36.0, 43.25], [36.25, 43.15]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, 42.5], [35.47, 43.03], [36.0, 43.25], [36.25, 43.15], [36.5, 43.25], [36.75, 43.15], [36.82, 43.18], [36.97, 43.53], [37.32, 43.68], [37.47, 44.03], [38.0, 44.25], [38.25, 44.15], [38.5, 44.25], [39.03, 44.03], [39.18, 43.68], [39.53, 43.53], [39.75, 43.0], [39.53, 42.47], [39.18, 42.32], [39.03, 41.97], [38.68, 41.82], [38.53, 41.47], [38.0, 41.25], [37.75, 41.35], [37.5, 41.25], [37.25, 41.35], [37.0, 41.25], [36.75, 41.35], [36.5, 41.25], [36.25, 41.35], [36.0, 41.25], [35.47, 41.47], [35.25, 42.0], [35.35, 42.25], [35.25, 42.5]]]]}, "2025-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, 42.5], [35.47, 43.03], [36.0, 43.25], [36.25, 43.15], [36.5, 43.25], [36.75, 43.15], [36.82, 43.18], [36.97, 43.53], [37.32, 43.68], [37.47, 44.03], [38.0, 44.25], [38.25, 44.15], [38.5, 44.25], [38.75, 44.15], [39.0, 44.25], [39.53, 44.03], [39.68, 43.68], [40.03, 43.53], [40.25, 43.0], [40.15, 42.75], [40.25, 42.5], [40.15, 42.25], [40.25, 42.0], [40.03, 41.47], [39.5, 41.25], [39.25, 41.35], [39.18, 41.32], [39.03, 40.97], [38.5, 40.75], [38.25, 40.85], [38.0, 40.75], [37.75, 40.85], [37.5, 40.75], [36.97, 40.97], [36.82, 41.32], [36.75, 41.35], [36.5, 41.25], [36.25, 41.35], [36.0, 41.25], [35.47, 41.47], [35.25, 42.0], [35.35, 42.25], [35.25, 42.5]]]]}, "2025-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, 42.5], [35.47, 43.03], [36.0, 43.25], [36.25, 43.15], [36.5, 43.25], [36.75, 43.15], [36.82, 43.18], [36.97, 43.53], [37.32, 43.68], [37.47, 44.03], [38.0, 44.25], [38.25, 44.15], [38.5, 44.25], [38.75, 44.15], [39.0, 44.25], [39.53, 44.03], [39.68, 43.68], [40.03, 43.53], [40.25, 43.0], [40.15, 42.75], [40.25, 42.5], [40.15, 42.25], [40.25, 42.0], [40.03, 41.47], [39.5, 41.25], [39.25, 41.35], [39.18, 41.32], [39.03, 40.97], [38.5, 40.75], [38.25, 40.85], [38.0, 40.75], [37.75, 40.85], [37.5, 40.75], [36.97, 40.97], [36.82, 41.32], [36.75, 41.35], [36.5, 41.25], [36.25, 41.35], [36.0, 41.25], [35.47, 41.47], [35.25, 42.0], [35.35, 42.25], [35.25, 42.5]]]]}, "2025-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.5, 40.75], [36.97, 40.97], [36.75, 41.5], [36.97, 42.03], [37.5, 42.25], [37.75, 42.15], [38.0, 42.25], [38.25, 42.15], [38.32, 42.18], [38.35, 42.25], [38.25, 42.5], [38.35, 42.75], [38.25, 43.0], [38.35, 43.25], [38.25, 43.5], [38.47, 44.03], [39.0, 44.25], [39.53, 44.03], [39.68, 43.68], [40.03, 43.53], [40.25, 43.0], [40.15, 42.75], [40.25, 42.5], [40.15, 42.25], [40.25, 42.0], [40.03, 41.47], [39.5, 41.25], [39.25, 41.35], [39.18, 41.32], [39.03, 40.97], [38.5, 40.75], [38.25, 40.85], [38.0, 40.75], [37.75, 40.85], [37.5, 40.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.536650662987995}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.5909663897743322}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.470790743360396, 25.473859405517544, 25.28619351509292, 24.87305552164719]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.19248479207357, 26.203799184163415, 26.548159535725915, 25.431209818522177]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.580982297526318, 2.6691689374097334, 2.6627923635848036, 2.2178651908366875]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.156731142974138, 3.305286504327512, 3.536650662987995, 2.655753639064301]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.388699666321939, 1.4184553221081755, 1.4125517891981998, 1.2174481692747041]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.593059796656699, 1.6556458812258361, 1.6816536631574732, 1.2986196530870528]}}