{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:40.191707", "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": "2011-Jun-09_to_2011-Jun-14_144.5_50.0"}, "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": 2011060000539}, "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": "June 09 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 14 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 97100.28439733907}, "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": ["Japan Sea", "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": 50.0}, "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": 144.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "144.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 147.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.97, 49.53], [143.32, 49.68], [143.46, 50.0], [143.25, 50.5], [143.35, 50.75], [143.25, 51.0], [143.43, 51.43], [143.0, 51.25], [142.47, 51.47], [142.25, 52.0], [142.47, 52.53], [143.0, 52.75], [143.53, 52.53], [143.75, 52.0], [143.57, 51.57], [144.0, 51.75], [144.53, 51.53], [144.68, 51.18], [144.75, 51.15], [145.0, 51.25], [145.25, 51.15], [145.5, 51.25], [145.75, 51.15], [146.0, 51.25], [146.25, 51.15], [146.5, 51.25], [147.03, 51.03], [147.25, 50.5], [147.03, 49.97], [146.68, 49.82], [146.54, 49.5], [146.75, 49.0], [146.53, 48.47], [146.0, 48.25], [145.75, 48.35], [145.5, 48.25], [145.25, 48.35], [145.18, 48.32], [145.03, 47.97], [144.5, 47.75], [144.25, 47.85], [144.0, 47.75], [143.75, 47.85], [143.5, 47.75], [142.97, 47.97], [142.75, 48.5], [142.85, 48.75], [142.75, 49.0], [142.97, 49.53]]]]}, "2011-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, 52.25], [141.25, 52.5], [141.47, 53.03], [142.0, 53.25], [142.25, 53.15], [142.32, 53.18], [142.47, 53.53], [143.0, 53.75], [143.53, 53.53], [143.75, 53.0], [143.65, 52.75], [143.75, 52.5], [143.65, 52.25], [143.68, 52.18], [144.03, 52.03], [144.18, 51.68], [144.25, 51.65], [144.5, 51.75], [145.03, 51.53], [145.18, 51.18], [145.25, 51.15], [145.5, 51.25], [145.75, 51.15], [146.0, 51.25], [146.25, 51.15], [146.5, 51.25], [146.75, 51.15], [147.0, 51.25], [147.53, 51.03], [147.75, 50.5], [147.53, 49.97], [147.18, 49.82], [147.03, 49.47], [146.68, 49.32], [146.65, 49.25], [146.75, 49.0], [146.53, 48.47], [146.0, 48.25], [145.75, 48.35], [145.5, 48.25], [145.25, 48.35], [145.18, 48.32], [145.03, 47.97], [144.5, 47.75], [144.25, 47.85], [144.0, 47.75], [143.75, 47.85], [143.5, 47.75], [142.97, 47.97], [142.75, 48.5], [142.85, 48.75], [142.75, 49.0], [142.97, 49.53], [143.32, 49.68], [143.46, 50.0], [143.32, 50.32], [142.97, 50.47], [142.82, 50.82], [142.75, 50.85], [142.5, 50.75], [142.25, 50.85], [142.0, 50.75], [141.47, 50.97], [141.25, 51.5], [141.35, 51.75], [141.25, 52.0], [141.35, 52.25]]]]}, "2011-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, 52.25], [141.25, 52.5], [141.47, 53.03], [142.0, 53.25], [142.25, 53.15], [142.32, 53.18], [142.47, 53.53], [143.0, 53.75], [143.53, 53.53], [143.75, 53.0], [143.65, 52.75], [143.68, 52.68], [144.03, 52.53], [144.18, 52.18], [144.53, 52.03], [144.68, 51.68], [145.03, 51.53], [145.18, 51.18], [145.25, 51.15], [145.5, 51.25], [145.75, 51.15], [146.0, 51.25], [146.25, 51.15], [146.5, 51.25], [146.75, 51.15], [147.0, 51.25], [147.53, 51.03], [147.75, 50.5], [147.53, 49.97], [147.18, 49.82], [147.03, 49.47], [146.68, 49.32], [146.65, 49.25], [146.75, 49.0], [146.53, 48.47], [146.0, 48.25], [145.75, 48.35], [145.5, 48.25], [145.25, 48.35], [145.18, 48.32], [145.03, 47.97], [144.68, 47.82], [144.53, 47.47], [144.0, 47.25], [143.75, 47.35], [143.68, 47.32], [143.53, 46.97], [143.0, 46.75], [142.47, 46.97], [142.25, 47.5], [142.35, 47.75], [142.25, 48.0], [142.47, 48.53], [142.82, 48.68], [142.85, 48.75], [142.75, 49.0], [142.97, 49.53], [143.32, 49.68], [143.46, 50.0], [143.32, 50.32], [142.97, 50.47], [142.82, 50.82], [142.75, 50.85], [142.5, 50.75], [142.25, 50.85], [142.0, 50.75], [141.47, 50.97], [141.25, 51.5], [141.35, 51.75], [141.25, 52.0], [141.35, 52.25]]]]}, "2011-06-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, 52.25], [141.25, 52.5], [141.47, 53.03], [142.0, 53.25], [142.25, 53.15], [142.32, 53.18], [142.47, 53.53], [143.0, 53.75], [143.53, 53.53], [143.75, 53.0], [143.65, 52.75], [143.68, 52.68], [144.03, 52.53], [144.18, 52.18], [144.53, 52.03], [144.68, 51.68], [145.03, 51.53], [145.18, 51.18], [145.25, 51.15], [145.5, 51.25], [145.75, 51.15], [146.0, 51.25], [146.25, 51.15], [146.5, 51.25], [146.75, 51.15], [147.0, 51.25], [147.53, 51.03], [147.75, 50.5], [147.53, 49.97], [147.18, 49.82], [147.03, 49.47], [146.68, 49.32], [146.65, 49.25], [146.75, 49.0], [146.53, 48.47], [146.0, 48.25], [145.75, 48.35], [145.63, 48.3], [145.75, 48.0], [145.53, 47.47], [145.0, 47.25], [144.75, 47.35], [144.5, 47.25], [144.25, 47.35], [144.0, 47.25], [143.75, 47.35], [143.68, 47.32], [143.53, 46.97], [143.0, 46.75], [142.47, 46.97], [142.25, 47.5], [142.35, 47.75], [142.25, 48.0], [142.35, 48.25], [142.25, 48.5], [142.47, 49.03], [142.82, 49.18], [142.97, 49.53], [143.32, 49.68], [143.46, 50.0], [143.32, 50.32], [142.97, 50.47], [142.82, 50.82], [142.75, 50.85], [142.5, 50.75], [142.25, 50.85], [142.0, 50.75], [141.47, 50.97], [141.25, 51.5], [141.35, 51.75], [141.25, 52.0], [141.35, 52.25]]]]}, "2011-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.0, 52.75], [143.25, 52.65], [143.5, 52.75], [144.03, 52.53], [144.18, 52.18], [144.53, 52.03], [144.68, 51.68], [145.03, 51.53], [145.18, 51.18], [145.53, 51.03], [145.68, 50.68], [146.03, 50.53], [146.18, 50.18], [146.53, 50.03], [146.75, 49.5], [146.65, 49.25], [146.75, 49.0], [146.53, 48.47], [146.0, 48.25], [145.75, 48.35], [145.63, 48.3], [145.75, 48.0], [145.53, 47.47], [145.0, 47.25], [144.75, 47.35], [144.5, 47.25], [144.25, 47.35], [144.0, 47.25], [143.75, 47.35], [143.68, 47.32], [143.53, 46.97], [143.0, 46.75], [142.47, 46.97], [142.25, 47.5], [142.35, 47.75], [142.25, 48.0], [142.35, 48.25], [142.25, 48.5], [142.47, 49.03], [142.82, 49.18], [142.97, 49.53], [143.32, 49.68], [143.46, 50.0], [143.32, 50.32], [142.97, 50.47], [142.82, 50.82], [142.75, 50.85], [142.5, 50.75], [141.97, 50.97], [141.75, 51.5], [141.97, 52.03], [142.32, 52.18], [142.47, 52.53], [143.0, 52.75]]]]}, "2011-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.47, 49.03], [143.0, 49.25], [143.53, 49.03], [143.7, 48.63], [144.0, 48.75], [144.25, 48.65], [144.5, 48.75], [144.75, 48.65], [145.0, 48.75], [145.53, 48.53], [145.75, 48.0], [145.53, 47.47], [145.0, 47.25], [144.75, 47.35], [144.5, 47.25], [144.25, 47.35], [144.0, 47.25], [143.5, 47.46], [143.0, 47.25], [142.47, 47.47], [142.25, 48.0], [142.35, 48.25], [142.25, 48.5], [142.47, 49.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.7978848482241006}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6492971415716124}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.8766516978263894, 4.194421393502694, 4.3441876368978, 4.323192455815729, 4.139218943346748, 5.123987508593018]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.1942670818757506, 3.229898507129235, 2.910185242440548, 3.0179682839099087, 3.1781885022262486, 4.595446620979146]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.008858663153692, -2.7691375835393, -2.6911810324912584, -2.788352108743208, -2.759334004450006, -2.3744374830286006]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.4588297670076145, -5.674881332762425, -5.245996666848782, -5.453534899244858, -5.7978848482241006, -2.8449602976061783]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4055725716157128, -1.5168509014685507, -1.4868309674684397, -1.5340704235507274, -1.58064904020934, -1.3625918039537954]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6340638606378832, -1.9772965339986843, -1.9021509461247164, -1.9127400133895243, -1.84356707873643, -1.407283689977844]}}