{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:34.856432", "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-17_to_2026-Feb-19_90.5_52.5"}, "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": 2026020002098}, "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 17 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": 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": 63524.74703585976}, "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": []}, "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": 52.5}, "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": 90.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "90.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 86.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 94.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[86.25, 52.0], [86.47, 52.53], [87.0, 52.75], [87.25, 52.65], [87.5, 52.75], [87.75, 52.65], [88.0, 52.75], [88.25, 52.65], [88.32, 52.68], [88.47, 53.03], [88.82, 53.18], [88.97, 53.53], [89.5, 53.75], [89.75, 53.65], [90.0, 53.75], [90.25, 53.65], [90.32, 53.68], [90.47, 54.03], [91.0, 54.25], [91.25, 54.15], [91.5, 54.25], [91.75, 54.15], [92.0, 54.25], [92.25, 54.15], [92.5, 54.25], [92.75, 54.15], [93.0, 54.25], [93.25, 54.15], [93.32, 54.18], [93.47, 54.53], [94.0, 54.75], [94.25, 54.65], [94.5, 54.75], [95.03, 54.53], [95.25, 54.0], [95.03, 53.47], [94.68, 53.32], [94.65, 53.25], [94.75, 53.0], [94.53, 52.47], [94.0, 52.25], [93.75, 52.35], [93.5, 52.25], [93.25, 52.35], [93.0, 52.25], [92.75, 52.35], [92.5, 52.25], [92.25, 52.35], [92.18, 52.32], [92.03, 51.97], [91.68, 51.82], [91.53, 51.47], [91.0, 51.25], [90.75, 51.35], [90.5, 51.25], [90.25, 51.35], [90.0, 51.25], [89.75, 51.35], [89.5, 51.25], [89.25, 51.35], [89.0, 51.25], [88.75, 51.35], [88.5, 51.25], [88.25, 51.35], [88.0, 51.25], [87.75, 51.35], [87.5, 51.25], [87.25, 51.35], [87.0, 51.25], [86.47, 51.47], [86.25, 52.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Siberia", "E.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.0, 51.25], [86.47, 51.47], [86.25, 52.0], [86.47, 52.53], [87.0, 52.75], [87.25, 52.65], [87.5, 52.75], [87.75, 52.65], [88.0, 52.75], [88.25, 52.65], [88.32, 52.68], [88.47, 53.03], [88.82, 53.18], [88.97, 53.53], [89.5, 53.75], [89.75, 53.65], [90.0, 53.75], [90.25, 53.65], [90.32, 53.68], [90.47, 54.03], [91.0, 54.25], [91.25, 54.15], [91.5, 54.25], [91.75, 54.15], [92.0, 54.25], [92.25, 54.15], [92.5, 54.25], [92.75, 54.15], [93.0, 54.25], [93.25, 54.15], [93.32, 54.18], [93.47, 54.53], [94.0, 54.75], [94.25, 54.65], [94.5, 54.75], [95.03, 54.53], [95.25, 54.0], [95.03, 53.47], [94.68, 53.32], [94.65, 53.25], [94.75, 53.0], [94.53, 52.47], 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"Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.587079387118157}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-5.969334460239736, -0.17074701645793766, -5.195338200587798]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.708994293212868, 4.809149678548181, -2.009128316243448]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.677211586895055, 13.216958415764076, 7.867068158695336]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.669265408263016, 16.482857317911282, 9.85529587793701]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3945182401559908, 2.442770756671977, 1.4874734222588961]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7893770580554398, 2.9304949102452853, 1.8214327936738093]}}