{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:19.744107", "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-Jan-26_to_2025-Jan-30_142.0_70.5"}, "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": 2025010002343}, "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": "January 26 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 30 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 53983.41683129947}, "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": 70.5}, "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": 142.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 131.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 145.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 69.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 71.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[144.5, 70.75], [144.75, 70.65], [145.0, 70.75], [145.53, 70.53], [145.75, 70.0], [145.65, 69.75], [145.75, 69.5], [145.53, 68.97], [145.0, 68.75], [144.75, 68.85], [144.5, 68.75], [144.25, 68.85], [144.0, 68.75], [143.75, 68.85], [143.5, 68.75], [143.25, 68.85], [143.0, 68.75], [142.75, 68.85], [142.5, 68.75], [141.97, 68.97], [141.75, 69.5], [141.88, 69.8], [141.75, 69.85], [141.68, 69.82], [141.53, 69.47], [141.0, 69.25], [140.47, 69.47], [140.32, 69.82], [140.25, 69.85], [140.0, 69.75], [139.75, 69.85], [139.5, 69.75], [139.25, 69.85], [139.18, 69.82], [139.03, 69.47], [138.5, 69.25], [137.97, 69.47], [137.82, 69.82], [137.75, 69.85], [137.5, 69.75], [137.25, 69.85], [137.0, 69.75], [136.47, 69.97], [136.32, 70.32], [136.25, 70.35], [136.18, 70.32], [136.03, 69.97], [135.5, 69.75], [135.25, 69.85], [135.0, 69.75], [134.75, 69.85], [134.68, 69.82], [134.53, 69.47], [134.0, 69.25], [133.75, 69.35], [133.5, 69.25], [133.25, 69.35], [133.0, 69.25], [132.75, 69.35], [132.5, 69.25], [132.25, 69.35], [132.0, 69.25], [131.75, 69.35], [131.5, 69.25], [130.97, 69.47], [130.75, 70.0], [130.85, 70.25], [130.75, 70.5], [130.97, 71.03], [131.5, 71.25], [131.75, 71.15], [131.82, 71.18], [131.97, 71.53], [132.5, 71.75], [132.75, 71.65], [133.0, 71.75], [133.25, 71.65], [133.5, 71.75], [133.75, 71.65], [134.0, 71.75], [134.25, 71.65], [134.5, 71.75], [134.75, 71.65], [135.0, 71.75], [135.25, 71.65], [135.5, 71.75], [135.75, 71.65], [136.0, 71.75], [136.25, 71.65], [136.5, 71.75], [136.75, 71.65], [137.0, 71.75], [137.25, 71.65], [137.5, 71.75], [137.75, 71.65], [138.0, 71.75], [138.53, 71.53], [138.68, 71.18], [138.75, 71.15], [139.0, 71.25], [139.25, 71.15], [139.5, 71.25], [139.75, 71.15], [140.0, 71.25], [140.25, 71.15], [140.5, 71.25], [140.75, 71.15], [141.0, 71.25], [141.25, 71.15], [141.5, 71.25], [141.75, 71.15], [142.0, 71.25], [142.25, 71.15], [142.5, 71.25], [143.03, 71.03], [143.18, 70.68], [143.25, 70.65], [143.5, 70.75], [143.75, 70.65], [144.0, 70.75], [144.25, 70.65], [144.5, 70.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Arctic"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.47, 70.53], [144.0, 70.75], [144.53, 70.53], [144.68, 70.18], [144.75, 70.15], [145.0, 70.25], [145.53, 70.03], [145.75, 69.5], [145.53, 68.97], [145.0, 68.75], [144.75, 68.85], [144.5, 68.75], [144.25, 68.85], [144.0, 68.75], [143.47, 68.97], [143.25, 69.5], [143.35, 69.75], [143.25, 70.0], [143.47, 70.53]]], [[[138.97, 69.97], [138.75, 70.5], [138.97, 71.03], [139.5, 71.25], [139.75, 71.15], [140.0, 71.25], [140.25, 71.15], [140.5, 71.25], [140.75, 71.15], [141.0, 71.25], [141.25, 71.15], [141.5, 71.25], [141.75, 71.15], [142.0, 71.25], [142.25, 71.15], [142.5, 71.25], [143.03, 71.03], [143.25, 70.5], [143.03, 69.97], [142.5, 69.75], [142.25, 69.85], [142.0, 69.75], [141.75, 69.85], [141.5, 69.75], [141.25, 69.85], [141.0, 69.75], [140.75, 69.85], [140.5, 69.75], [140.25, 69.85], [140.0, 69.75], [139.75, 69.85], [139.5, 69.75], [138.97, 69.97]]]]}, "2025-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.75, 70.5], [130.97, 71.03], [131.5, 71.25], [131.75, 71.15], [131.82, 71.18], [131.97, 71.53], [132.5, 71.75], [132.75, 71.65], [133.0, 71.75], [133.25, 71.65], [133.5, 71.75], [133.75, 71.65], [134.0, 71.75], [134.25, 71.65], [134.5, 71.75], [134.75, 71.65], [135.0, 71.75], [135.25, 71.65], [135.5, 71.75], [135.75, 71.65], [136.0, 71.75], [136.25, 71.65], [136.5, 71.75], [136.75, 71.65], [137.0, 71.75], [137.25, 71.65], [137.5, 71.75], [137.75, 71.65], [138.0, 71.75], [138.53, 71.53], [138.68, 71.18], [138.75, 71.15], [139.0, 71.25], [139.25, 71.15], [139.5, 71.25], [139.75, 71.15], [140.0, 71.25], [140.25, 71.15], [140.5, 71.25], [140.75, 71.15], [141.0, 71.25], [141.25, 71.15], [141.5, 71.25], [141.75, 71.15], [142.0, 71.25], [142.25, 71.15], [142.5, 71.25], [143.03, 71.03], [143.25, 70.5], [143.13, 70.2], [143.25, 70.15], [143.32, 70.18], [143.47, 70.53], [144.0, 70.75], [144.53, 70.53], [144.68, 70.18], [144.75, 70.15], [145.0, 70.25], [145.53, 70.03], [145.75, 69.5], [145.53, 68.97], [145.0, 68.75], [144.75, 68.85], [144.5, 68.75], [144.25, 68.85], [144.0, 68.75], [143.75, 68.85], [143.5, 68.75], [143.25, 68.85], [143.0, 68.75], [142.75, 68.85], [142.5, 68.75], [141.97, 68.97], [141.75, 69.5], [141.88, 69.8], [141.75, 69.85], [141.68, 69.82], [141.53, 69.47], [141.0, 69.25], [140.47, 69.47], [140.32, 69.82], [140.25, 69.85], [140.0, 69.75], [139.75, 69.85], [139.5, 69.75], [139.25, 69.85], [139.18, 69.82], [139.03, 69.47], [138.5, 69.25], [137.97, 69.47], [137.82, 69.82], [137.75, 69.85], [137.5, 69.75], [137.25, 69.85], [137.0, 69.75], [136.47, 69.97], [136.32, 70.32], [136.25, 70.35], [136.18, 70.32], [136.03, 69.97], [135.5, 69.75], [135.25, 69.85], [135.0, 69.75], [134.75, 69.85], [134.68, 69.82], [134.53, 69.47], [134.0, 69.25], [133.75, 69.35], [133.5, 69.25], [133.25, 69.35], [133.0, 69.25], [132.75, 69.35], [132.5, 69.25], [132.25, 69.35], [132.0, 69.25], [131.75, 69.35], [131.5, 69.25], [130.97, 69.47], [130.75, 70.0], [130.85, 70.25], [130.75, 70.5]]]]}, "2025-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.75, 70.5], [130.97, 71.03], [131.5, 71.25], [131.75, 71.15], [131.82, 71.18], [131.97, 71.53], [132.5, 71.75], [132.75, 71.65], [133.0, 71.75], [133.25, 71.65], [133.5, 71.75], [133.75, 71.65], [134.0, 71.75], [134.25, 71.65], [134.5, 71.75], [134.75, 71.65], [135.0, 71.75], [135.25, 71.65], [135.5, 71.75], [135.75, 71.65], [136.0, 71.75], [136.25, 71.65], [136.5, 71.75], [136.75, 71.65], [137.0, 71.75], [137.25, 71.65], [137.5, 71.75], [137.75, 71.65], [138.0, 71.75], [138.53, 71.53], [138.68, 71.18], [138.75, 71.15], [139.0, 71.25], [139.25, 71.15], [139.5, 71.25], [139.75, 71.15], [140.0, 71.25], [140.25, 71.15], [140.5, 71.25], [140.75, 71.15], [141.0, 71.25], [141.25, 71.15], [141.5, 71.25], [141.75, 71.15], [142.0, 71.25], [142.25, 71.15], [142.5, 71.25], [143.03, 71.03], [143.18, 70.68], [143.25, 70.65], [143.5, 70.75], [143.75, 70.65], [144.0, 70.75], [144.25, 70.65], [144.5, 70.75], [144.75, 70.65], [145.0, 70.75], [145.53, 70.53], [145.75, 70.0], [145.65, 69.75], [145.75, 69.5], [145.53, 68.97], [145.0, 68.75], [144.75, 68.85], [144.5, 68.75], [144.25, 68.85], [144.0, 68.75], [143.75, 68.85], [143.5, 68.75], [143.25, 68.85], [143.0, 68.75], [142.75, 68.85], [142.5, 68.75], [141.97, 68.97], [141.75, 69.5], [141.88, 69.8], [141.75, 69.85], [141.68, 69.82], [141.53, 69.47], [141.0, 69.25], [140.47, 69.47], [140.32, 69.82], [140.25, 69.85], [140.0, 69.75], [139.75, 69.85], [139.5, 69.75], [139.25, 69.85], [139.18, 69.82], [139.03, 69.47], [138.5, 69.25], [137.97, 69.47], [137.82, 69.82], [137.75, 69.85], [137.5, 69.75], [137.25, 69.85], [137.0, 69.75], [136.47, 69.97], [136.32, 70.32], [136.25, 70.35], [136.18, 70.32], [136.03, 69.97], [135.5, 69.75], [135.25, 69.85], [135.0, 69.75], [134.75, 69.85], [134.68, 69.82], [134.53, 69.47], [134.0, 69.25], [133.75, 69.35], [133.5, 69.25], [133.25, 69.35], [133.0, 69.25], [132.75, 69.35], [132.5, 69.25], [132.25, 69.35], [132.0, 69.25], [131.75, 69.35], [131.5, 69.25], [130.97, 69.47], [130.75, 70.0], [130.85, 70.25], [130.75, 70.5]]]]}, "2025-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.75, 70.5], [130.97, 71.03], [131.5, 71.25], [131.75, 71.15], [131.82, 71.18], [131.97, 71.53], [132.5, 71.75], [132.75, 71.65], [133.0, 71.75], [133.25, 71.65], [133.5, 71.75], [133.75, 71.65], [134.0, 71.75], [134.25, 71.65], [134.5, 71.75], [134.75, 71.65], [135.0, 71.75], [135.25, 71.65], [135.5, 71.75], [135.75, 71.65], [136.0, 71.75], [136.25, 71.65], [136.5, 71.75], [136.75, 71.65], [137.0, 71.75], [137.25, 71.65], [137.5, 71.75], [137.75, 71.65], [138.0, 71.75], [138.53, 71.53], [138.68, 71.18], [138.75, 71.15], [139.0, 71.25], [139.25, 71.15], [139.5, 71.25], [139.75, 71.15], [140.0, 71.25], [140.25, 71.15], [140.5, 71.25], [140.75, 71.15], [141.0, 71.25], [141.25, 71.15], [141.5, 71.25], [141.75, 71.15], [142.0, 71.25], [142.25, 71.15], [142.5, 71.25], [143.03, 71.03], [143.18, 70.68], [143.25, 70.65], [143.5, 70.75], [143.75, 70.65], [144.0, 70.75], [144.25, 70.65], [144.5, 70.75], [144.75, 70.65], [145.0, 70.75], [145.53, 70.53], [145.75, 70.0], [145.65, 69.75], [145.75, 69.5], [145.53, 68.97], [145.0, 68.75], [144.75, 68.85], [144.5, 68.75], [144.25, 68.85], [144.0, 68.75], [143.75, 68.85], [143.5, 68.75], [143.25, 68.85], [143.0, 68.75], [142.75, 68.85], [142.5, 68.75], [141.97, 68.97], [141.75, 69.5], [141.88, 69.8], [141.75, 69.85], [141.68, 69.82], [141.53, 69.47], [141.0, 69.25], [140.47, 69.47], [140.32, 69.82], [140.25, 69.85], [140.0, 69.75], [139.75, 69.85], [139.5, 69.75], [139.25, 69.85], [139.18, 69.82], [139.03, 69.47], [138.5, 69.25], [137.97, 69.47], [137.82, 69.82], [137.75, 69.85], [137.5, 69.75], [137.25, 69.85], [137.0, 69.75], [136.47, 69.97], [136.32, 70.32], [136.25, 70.35], [136.18, 70.32], [136.03, 69.97], [135.5, 69.75], [135.25, 69.85], [135.0, 69.75], [134.75, 69.85], [134.68, 69.82], [134.53, 69.47], [134.0, 69.25], [133.75, 69.35], [133.5, 69.25], [133.25, 69.35], [133.0, 69.25], [132.75, 69.35], [132.5, 69.25], [132.25, 69.35], [132.0, 69.25], [131.75, 69.35], [131.5, 69.25], [130.97, 69.47], [130.75, 70.0], [130.85, 70.25], [130.75, 70.5]]]]}, "2025-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.0, 69.75], [141.47, 69.97], [141.25, 70.5], [141.47, 71.03], [142.0, 71.25], [142.53, 71.03], [142.7, 70.63], [143.0, 70.75], [143.25, 70.65], [143.5, 70.75], [143.75, 70.65], [144.0, 70.75], [144.25, 70.65], [144.5, 70.75], [144.75, 70.65], [145.0, 70.75], [145.53, 70.53], [145.75, 70.0], [145.53, 69.47], [145.0, 69.25], [144.75, 69.35], [144.5, 69.25], [144.25, 69.35], [144.0, 69.25], [143.75, 69.35], [143.5, 69.25], [143.25, 69.35], [143.0, 69.25], [142.47, 69.47], [142.3, 69.88], [142.0, 69.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.489072602506326}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.798677464849122}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-26.79272649360425, -25.09135962592231, -24.08058957809061, -24.342147230490667, -26.033796268039282]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-25.70069287618, -22.12254689534504, -22.191463851928688, -22.953270339965798, -25.760548655192025]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.206348390139452, 9.565936031687292, 10.368049518387636, 9.989769102955794, 7.989193572853272]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.459926173500378, 12.489072602506326, 12.426785830919869, 11.99929548046174, 8.538896978303626]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4968239764936981, 1.5606533516018477, 1.6873134631183366, 1.6256885011383806, 1.4300343913487286]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6038823255249575, 1.994596397568947, 1.9716447535505919, 2.0895609031770457, 1.483907409377712]}}