{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:59.445035", "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": "2015-Oct-25_to_2015-Oct-27_149.5_45.5"}, "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": 2015100000626}, "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": "October 25 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 27 2015"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 57777.122655350075}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": ["North Pacific Ocean", "Sea of Okhotsk"]}, "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": 45.5}, "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": 149.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "149.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 147.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 151.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.25, 46.5], [147.47, 47.03], [147.82, 47.18], [147.85, 47.25], [147.75, 47.5], [147.97, 48.03], [148.5, 48.25], [148.75, 48.15], [149.0, 48.25], [149.53, 48.03], [149.68, 47.68], [150.03, 47.53], [150.18, 47.18], [150.25, 47.15], [150.5, 47.25], [150.75, 47.15], [151.0, 47.25], [151.25, 47.15], [151.5, 47.25], [152.03, 47.03], [152.25, 46.5], [152.15, 46.25], [152.25, 46.0], [152.03, 45.47], [151.5, 45.25], [151.25, 45.35], [151.0, 45.25], [150.75, 45.35], [150.68, 45.32], [150.65, 45.25], [150.75, 45.0], [150.53, 44.47], [150.0, 44.25], [149.75, 44.35], [149.5, 44.25], [149.25, 44.35], [149.0, 44.25], [148.47, 44.47], [148.32, 44.82], [147.97, 44.97], [147.75, 45.5], [147.85, 45.75], [147.82, 45.82], [147.47, 45.97], [147.25, 46.5]]]]}, "2015-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.25, 46.5], [147.47, 47.03], [147.82, 47.18], [147.85, 47.25], [147.75, 47.5], [147.97, 48.03], [148.5, 48.25], [148.75, 48.15], [149.0, 48.25], [149.53, 48.03], [149.68, 47.68], [150.03, 47.53], [150.18, 47.18], [150.25, 47.15], [150.5, 47.25], [150.75, 47.15], [151.0, 47.25], [151.25, 47.15], [151.5, 47.25], [152.03, 47.03], [152.25, 46.5], [152.15, 46.25], [152.25, 46.0], [152.03, 45.47], [151.5, 45.25], [151.25, 45.35], [151.0, 45.25], [150.75, 45.35], [150.68, 45.32], [150.65, 45.25], [150.75, 45.0], [150.53, 44.47], [150.0, 44.25], [149.75, 44.35], [149.5, 44.25], [149.25, 44.35], [149.0, 44.25], [148.47, 44.47], [148.32, 44.82], [147.97, 44.97], [147.75, 45.5], [147.85, 45.75], [147.82, 45.82], [147.47, 45.97], [147.25, 46.5]]]]}, "2015-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.25, 46.5], [147.47, 47.03], [147.82, 47.18], [147.85, 47.25], [147.75, 47.5], [147.97, 48.03], [148.5, 48.25], [148.75, 48.15], [149.0, 48.25], [149.53, 48.03], [149.68, 47.68], [150.03, 47.53], [150.18, 47.18], [150.25, 47.15], [150.5, 47.25], [150.75, 47.15], [151.0, 47.25], [151.25, 47.15], [151.5, 47.25], [152.03, 47.03], [152.25, 46.5], [152.15, 46.25], [152.25, 46.0], [152.03, 45.47], [151.5, 45.25], [151.25, 45.35], [151.0, 45.25], [150.75, 45.35], [150.68, 45.32], [150.65, 45.25], [150.75, 45.0], [150.53, 44.47], [150.0, 44.25], [149.75, 44.35], [149.5, 44.25], [149.25, 44.35], [149.0, 44.25], [148.47, 44.47], [148.32, 44.82], [147.97, 44.97], [147.75, 45.5], [147.85, 45.75], [147.82, 45.82], [147.47, 45.97], [147.25, 46.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.8266817823131305}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7132448019865407}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.886131697174392, 4.475918882362748, 4.814079159683445]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.9805820987293714, 3.526826876179541, 4.10071892429761]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6067235741811454, -2.976348650337339, -2.5566621814411383]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.5001740072980283, -3.8266817823131305, -2.9876536700858765]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.569911133018459, -1.769499333775595, -1.5315935865333348]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8992109321648478, -2.090459239436182, -1.7190714225678647]}}