{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:34.019640", "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": "2026-Feb-16_to_2026-Feb-19_83.5_48.5"}, "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": 2026020002037}, "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": "February 16 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2026"}, "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": 52348.84376079227}, "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": ["Kazakhstan", "Russian Federation"]}, "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": 48.5}, "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": 83.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "83.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 81.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 85.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[84.5, 49.25], [85.03, 49.03], [85.18, 48.68], [85.53, 48.53], [85.75, 48.0], [85.53, 47.47], [85.0, 47.25], [84.75, 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regions affected", "value": ["W.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.0, 47.75], [82.47, 47.97], [82.25, 48.5], [82.47, 49.03], [83.0, 49.25], [83.25, 49.15], [83.5, 49.25], [83.75, 49.15], [84.0, 49.25], [84.53, 49.03], [84.68, 48.68], [85.03, 48.53], [85.25, 48.0], [85.03, 47.47], [84.5, 47.25], [83.97, 47.47], [83.82, 47.82], [83.75, 47.85], [83.5, 47.75], [83.25, 47.85], [83.0, 47.75]]]]}, "2026-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.47, 48.47], [81.25, 49.0], [81.47, 49.53], [82.0, 49.75], [82.25, 49.65], [82.32, 49.68], [82.35, 49.75], [82.32, 49.82], [81.97, 49.97], [81.75, 50.5], [81.97, 51.03], [82.5, 51.25], [82.75, 51.15], [83.0, 51.25], [83.25, 51.15], [83.32, 51.18], [83.47, 51.53], [84.0, 51.75], [84.25, 51.65], [84.5, 51.75], [84.75, 51.65], [85.0, 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"description": "Maximum t2m anomaly recorded over entire duration", "value": 15.537721681247888}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 10.222347097433266}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-3.0326789855956804, -4.496138098301003, -1.485872356708228, -3.7421103893182135]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.4170987447102448, 0.6297101338704465, 2.635647074381552, 0.9667831420898665]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.83968690063196, 9.277489367073686, 12.017193921399507, 9.431228803334495]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [11.863120178069835, 12.66587083271071, 15.537721681247888, 12.36051631203867]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4052932642407436, 1.503251283318099, 2.01639825604455, 1.6171842217721821]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.593918608142186, 1.8033497864381578, 2.7802957787525187, 1.9138767608578238]}}