{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:59.846906", "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-Nov-14_to_2025-Nov-18_63.0_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": 2025110001801}, "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": "November 14 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 18 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": 154562.2910398401}, "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": ["Barents Sea", "Kara 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": 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": 63.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "63.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 56.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 66.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 70.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 75.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[66.03, 74.03], [66.25, 73.5], [66.15, 73.25], [66.18, 73.18], [66.25, 73.15], [66.5, 73.25], [67.03, 73.03], [67.25, 72.5], [67.15, 72.25], [67.25, 72.0], [67.03, 71.47], [66.68, 71.32], [66.53, 70.97], [66.18, 70.82], [66.03, 70.47], [65.68, 70.32], [65.53, 69.97], [65.0, 69.75], [64.75, 69.85], [64.5, 69.75], [64.25, 69.85], [64.0, 69.75], [63.75, 69.85], [63.5, 69.75], [63.25, 69.85], [63.0, 69.75], [62.75, 69.85], [62.5, 69.75], [62.25, 69.85], [62.18, 69.82], [62.03, 69.47], [61.5, 69.25], [61.25, 69.35], [61.0, 69.25], [60.75, 69.35], [60.5, 69.25], [60.25, 69.35], [60.0, 69.25], [59.47, 69.47], [59.25, 70.0], [59.03, 69.47], [58.5, 69.25], [58.25, 69.35], [58.0, 69.25], [57.75, 69.35], [57.5, 69.25], [56.97, 69.47], [56.75, 70.0], [56.85, 70.25], [56.75, 70.5], [56.85, 70.75], [56.82, 70.82], [56.75, 70.85], [56.5, 70.75], [56.25, 70.85], [56.0, 70.75], [55.47, 70.97], [55.25, 71.5], [55.35, 71.75], [55.25, 72.0], [55.47, 72.53], [55.82, 72.68], [55.97, 73.03], [56.5, 73.25], [56.75, 73.15], [56.82, 73.18], [56.97, 73.53], [57.32, 73.68], [57.35, 73.75], [57.25, 74.0], [57.47, 74.53], [58.0, 74.75], [58.25, 74.65], [58.32, 74.68], [58.47, 75.03], [59.0, 75.25], [59.25, 75.15], [59.5, 75.25], [59.75, 75.15], [60.0, 75.25], [60.25, 75.15], [60.32, 75.18], [60.47, 75.53], [61.0, 75.75], [61.25, 75.65], [61.5, 75.75], [61.75, 75.65], [62.0, 75.75], [62.25, 75.65], [62.5, 75.75], [63.03, 75.53], [63.18, 75.18], [63.25, 75.15], [63.5, 75.25], [63.75, 75.15], [64.0, 75.25], [64.53, 75.03], [64.68, 74.68], [64.75, 74.65], [65.0, 74.75], [65.53, 74.53], [65.68, 74.18], [66.03, 74.03]], [[59.35, 70.25], [59.32, 70.32], [59.25, 70.35], [59.18, 70.32], [59.15, 70.25], [59.25, 70.0], [59.35, 70.25]]]]}}, "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": {"2025-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.25, 72.0], [55.47, 72.53], [55.82, 72.68], [55.97, 73.03], [56.5, 73.25], [56.75, 73.15], [56.82, 73.18], [56.97, 73.53], [57.32, 73.68], [57.35, 73.75], [57.25, 74.0], [57.47, 74.53], [58.0, 74.75], [58.25, 74.65], [58.32, 74.68], [58.47, 75.03], [59.0, 75.25], [59.25, 75.15], [59.5, 75.25], [59.75, 75.15], [60.0, 75.25], [60.25, 75.15], [60.32, 75.18], [60.47, 75.53], [61.0, 75.75], [61.25, 75.65], [61.5, 75.75], [61.75, 75.65], [62.0, 75.75], [62.25, 75.65], [62.5, 75.75], [63.03, 75.53], [63.18, 75.18], [63.25, 75.15], [63.5, 75.25], [63.75, 75.15], [64.0, 75.25], [64.53, 75.03], [64.68, 74.68], [64.75, 74.65], [65.0, 74.75], [65.53, 74.53], [65.75, 74.0], [65.65, 73.75], [65.68, 73.68], [66.03, 73.53], [66.25, 73.0], [66.03, 72.47], [65.68, 72.32], [65.65, 72.25], [65.75, 72.0], [65.65, 71.75], [65.75, 71.5], [65.53, 70.97], [65.0, 70.75], [64.75, 70.85], [64.68, 70.82], [64.53, 70.47], [64.18, 70.32], [64.03, 69.97], [63.5, 69.75], [63.25, 69.85], [63.0, 69.75], [62.75, 69.85], [62.5, 69.75], [62.25, 69.85], [62.0, 69.75], [61.47, 69.97], [61.32, 70.32], [61.25, 70.35], [61.0, 70.25], [60.75, 70.35], [60.5, 70.25], [60.25, 70.35], [60.0, 70.25], [59.75, 70.35], [59.5, 70.25], [59.25, 70.35], [59.18, 70.32], [59.03, 69.97], [58.5, 69.75], [58.25, 69.85], [58.0, 69.75], [57.75, 69.85], [57.5, 69.75], [56.97, 69.97], [56.75, 70.5], [56.85, 70.75], [56.82, 70.82], [56.75, 70.85], [56.5, 70.75], [56.25, 70.85], [56.0, 70.75], [55.47, 70.97], [55.25, 71.5], [55.35, 71.75], [55.25, 72.0]]]]}, "2025-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.25, 72.0], [55.47, 72.53], [55.82, 72.68], [55.97, 73.03], [56.5, 73.25], [56.75, 73.15], [56.82, 73.18], [56.97, 73.53], [57.32, 73.68], [57.35, 73.75], [57.25, 74.0], [57.47, 74.53], [58.0, 74.75], [58.25, 74.65], [58.32, 74.68], [58.47, 75.03], [59.0, 75.25], [59.25, 75.15], [59.5, 75.25], [59.75, 75.15], [60.0, 75.25], [60.25, 75.15], [60.32, 75.18], [60.47, 75.53], [61.0, 75.75], [61.25, 75.65], [61.5, 75.75], [61.75, 75.65], [62.0, 75.75], [62.25, 75.65], [62.5, 75.75], [63.03, 75.53], [63.18, 75.18], [63.25, 75.15], [63.5, 75.25], [63.75, 75.15], [64.0, 75.25], [64.53, 75.03], [64.68, 74.68], [64.75, 74.65], [65.0, 74.75], [65.53, 74.53], [65.68, 74.18], [66.03, 74.03], [66.25, 73.5], [66.15, 73.25], [66.18, 73.18], [66.25, 73.15], [66.5, 73.25], [67.03, 73.03], [67.25, 72.5], [67.15, 72.25], [67.25, 72.0], [67.03, 71.47], [66.68, 71.32], [66.53, 70.97], [66.18, 70.82], [66.03, 70.47], [65.68, 70.32], [65.53, 69.97], [65.0, 69.75], [64.75, 69.85], [64.5, 69.75], [64.25, 69.85], [64.0, 69.75], [63.75, 69.85], [63.5, 69.75], [63.25, 69.85], [63.0, 69.75], [62.75, 69.85], [62.5, 69.75], [62.25, 69.85], [62.0, 69.75], [61.47, 69.97], [61.32, 70.32], [61.25, 70.35], [61.0, 70.25], [60.75, 70.35], [60.5, 70.25], [60.25, 70.35], [60.0, 70.25], [59.75, 70.35], [59.5, 70.25], [59.25, 70.35], [59.18, 70.32], [59.03, 69.97], [58.5, 69.75], [58.25, 69.85], [58.0, 69.75], [57.75, 69.85], [57.5, 69.75], [56.97, 69.97], [56.75, 70.5], [56.85, 70.75], [56.82, 70.82], [56.75, 70.85], [56.5, 70.75], [56.25, 70.85], [56.0, 70.75], [55.47, 70.97], [55.25, 71.5], [55.35, 71.75], [55.25, 72.0]]]]}, "2025-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[55.25, 72.0], [55.47, 72.53], [55.82, 72.68], [55.97, 73.03], [56.5, 73.25], [56.75, 73.15], [56.82, 73.18], [56.97, 73.53], [57.32, 73.68], [57.35, 73.75], [57.25, 74.0], [57.47, 74.53], [58.0, 74.75], [58.25, 74.65], [58.32, 74.68], [58.47, 75.03], [59.0, 75.25], [59.25, 75.15], [59.5, 75.25], [59.75, 75.15], [60.0, 75.25], [60.25, 75.15], [60.32, 75.18], [60.47, 75.53], [61.0, 75.75], [61.25, 75.65], [61.5, 75.75], [61.75, 75.65], [62.0, 75.75], [62.25, 75.65], [62.5, 75.75], [63.03, 75.53], [63.18, 75.18], [63.25, 75.15], [63.5, 75.25], [63.75, 75.15], [64.0, 75.25], [64.53, 75.03], [64.68, 74.68], [64.75, 74.65], [65.0, 74.75], [65.53, 74.53], [65.68, 74.18], [66.03, 74.03], [66.25, 73.5], [66.15, 73.25], [66.18, 73.18], [66.25, 73.15], [66.5, 73.25], [67.03, 73.03], [67.25, 72.5], [67.15, 72.25], [67.25, 72.0], [67.03, 71.47], [66.68, 71.32], [66.53, 70.97], [66.18, 70.82], [66.03, 70.47], [65.68, 70.32], [65.53, 69.97], [65.0, 69.75], [64.75, 69.85], [64.5, 69.75], [64.25, 69.85], [64.0, 69.75], [63.75, 69.85], [63.5, 69.75], [63.25, 69.85], [63.0, 69.75], [62.75, 69.85], [62.5, 69.75], [62.25, 69.85], [62.18, 69.82], [62.03, 69.47], [61.5, 69.25], [61.25, 69.35], [61.0, 69.25], [60.75, 69.35], [60.5, 69.25], [60.25, 69.35], [60.0, 69.25], [59.47, 69.47], [59.25, 70.0], [59.03, 69.47], [58.5, 69.25], [58.25, 69.35], [58.0, 69.25], [57.75, 69.35], [57.5, 69.25], [56.97, 69.47], [56.75, 70.0], [56.85, 70.25], [56.75, 70.5], [56.85, 70.75], [56.82, 70.82], [56.75, 70.85], [56.5, 70.75], [56.25, 70.85], [56.0, 70.75], [55.47, 70.97], [55.25, 71.5], [55.35, 71.75], [55.25, 72.0]], [[59.35, 70.25], [59.32, 70.32], [59.25, 70.35], [59.18, 70.32], [59.15, 70.25], [59.25, 70.0], [59.35, 70.25]]]]}, "2025-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.75, 72.0], [56.97, 72.53], [57.32, 72.68], [57.47, 73.03], [58.0, 73.25], [58.25, 73.15], [58.5, 73.25], [58.75, 73.15], [59.0, 73.25], [59.25, 73.15], [59.5, 73.25], [59.75, 73.15], [60.0, 73.25], [60.25, 73.15], [60.5, 73.25], [60.75, 73.15], [61.0, 73.25], [61.25, 73.15], [61.5, 73.25], [61.75, 73.15], [61.82, 73.18], [61.97, 73.53], [62.5, 73.75], [62.75, 73.65], [63.0, 73.75], [63.25, 73.65], [63.5, 73.75], [63.75, 73.65], [64.0, 73.75], [64.25, 73.65], [64.32, 73.68], [64.47, 74.03], [65.0, 74.25], [65.25, 74.15], [65.5, 74.25], [66.03, 74.03], [66.25, 73.5], [66.15, 73.25], [66.18, 73.18], [66.25, 73.15], [66.5, 73.25], [67.03, 73.03], [67.25, 72.5], [67.15, 72.25], [67.25, 72.0], [67.03, 71.47], [66.68, 71.32], [66.53, 70.97], [66.18, 70.82], [66.03, 70.47], [65.68, 70.32], [65.53, 69.97], [65.0, 69.75], [64.75, 69.85], [64.5, 69.75], [64.25, 69.85], [64.0, 69.75], [63.75, 69.85], [63.5, 69.75], [63.25, 69.85], [63.0, 69.75], [62.75, 69.85], [62.5, 69.75], [62.25, 69.85], [62.18, 69.82], [62.03, 69.47], [61.5, 69.25], [61.25, 69.35], [61.0, 69.25], [60.75, 69.35], [60.5, 69.25], [60.25, 69.35], [60.0, 69.25], [59.47, 69.47], [59.25, 70.0], [59.03, 69.47], [58.5, 69.25], [58.25, 69.35], [58.0, 69.25], [57.75, 69.35], [57.5, 69.25], [56.97, 69.47], [56.75, 70.0], [56.97, 70.53], [57.32, 70.68], [57.38, 70.8], [56.97, 70.97], [56.75, 71.5], [56.85, 71.75], [56.75, 72.0]], [[59.35, 70.25], [59.32, 70.32], [59.25, 70.35], [59.18, 70.32], [59.15, 70.25], [59.25, 70.0], [59.35, 70.25]]]]}, "2025-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.97, 69.47], [56.75, 70.0], [56.97, 70.53], [57.5, 70.75], [57.75, 70.65], [58.0, 70.75], [58.25, 70.65], [58.5, 70.75], [59.03, 70.53], [59.25, 70.0], [59.03, 69.47], [58.5, 69.25], [58.25, 69.35], [58.0, 69.25], [57.75, 69.35], [57.5, 69.25], [56.97, 69.47]]], [[[59.25, 70.5], [59.47, 71.03], [59.82, 71.18], [59.97, 71.53], [60.5, 71.75], [60.75, 71.65], [61.0, 71.75], [61.25, 71.65], [61.5, 71.75], [61.75, 71.65], [62.0, 71.75], [62.25, 71.65], [62.32, 71.68], [62.47, 72.03], [63.0, 72.25], [63.25, 72.15], [63.5, 72.25], [64.03, 72.03], [64.18, 71.68], [64.25, 71.65], [64.32, 71.68], [64.47, 72.03], [65.0, 72.25], [65.25, 72.15], [65.32, 72.18], [65.47, 72.53], [66.0, 72.75], [66.53, 72.53], [66.75, 72.0], [66.65, 71.75], [66.75, 71.5], [66.53, 70.97], [66.18, 70.82], [66.03, 70.47], [65.68, 70.32], [65.53, 69.97], [65.0, 69.75], [64.75, 69.85], [64.5, 69.75], [64.25, 69.85], [64.0, 69.75], [63.75, 69.85], [63.5, 69.75], [63.25, 69.85], [63.0, 69.75], [62.75, 69.85], [62.5, 69.75], [62.25, 69.85], [62.18, 69.82], [62.03, 69.47], [61.5, 69.25], [61.25, 69.35], [61.0, 69.25], [60.75, 69.35], [60.5, 69.25], [60.25, 69.35], [60.0, 69.25], [59.47, 69.47], [59.25, 70.0], [59.35, 70.25], [59.25, 70.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.927777955994088}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.557556716239202}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.252185956922915, 0.4408110317213527, -0.22177922412600992, 0.0221589743685513, 0.11898807343982298]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.9229942321777571, 1.6165278116862396, 1.5165395100911496, 1.6804634094238509, 0.8682533264160384]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.413029767254611, 6.9927317675287, 6.452146311134187, 6.2964993554049595, 6.444660322363792]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.145326997726329, 8.927777955994088, 8.030441165335617, 8.105311954312413, 7.907388741610021]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.243243984507965, 1.3106604069466687, 1.1791501349822746, 1.1543396865695341, 1.199362281864051]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3914183181053212, 1.5073379613061744, 1.312785956122612, 1.4491459737472507, 1.3379947439258242]}}