{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:50.357043", "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": "2012-Nov-26_to_2012-Dec-03_131.0_57.5"}, "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": 2012110000984}, "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 26 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 03 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 131927.94616109168}, "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": ["E.Siberia", "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": []}, "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": 57.5}, "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": 131.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "131.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 126.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 135.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.5, 57.25], [127.75, 57.15], [128.0, 57.25], [128.25, 57.15], [128.5, 57.25], [129.03, 57.03], [129.25, 56.5], [129.15, 56.25], [129.25, 56.0], [129.03, 55.47], [128.5, 55.25], [128.25, 55.35], [128.0, 55.25], [127.75, 55.35], [127.5, 55.25], [126.97, 55.47], [126.75, 56.0], [126.85, 56.25], [126.75, 56.5], [126.97, 57.03], [127.5, 57.25]]], [[[129.25, 58.0], [129.47, 58.53], [130.0, 58.75], [130.5, 58.54], [131.0, 58.75], [131.25, 58.65], [131.5, 58.75], [132.03, 58.53], [132.25, 58.0], [132.04, 57.5], [132.25, 57.0], [132.03, 56.47], [131.5, 56.25], [131.25, 56.35], [131.0, 56.25], [130.75, 56.35], [130.5, 56.25], [130.25, 56.35], [130.0, 56.25], [129.47, 56.47], [129.25, 57.0], [129.35, 57.25], [129.25, 57.5], [129.35, 57.75], [129.25, 58.0]]]]}, "2012-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, 57.03], [126.5, 57.25], [126.75, 57.15], [126.82, 57.18], [126.97, 57.53], [127.5, 57.75], [127.75, 57.65], [128.0, 57.75], [128.25, 57.65], [128.5, 57.75], [128.8, 57.63], [128.97, 58.03], [129.32, 58.18], [129.47, 58.53], [130.0, 58.75], [130.25, 58.65], [130.5, 58.75], [130.75, 58.65], [131.0, 58.75], [131.25, 58.65], [131.5, 58.75], [132.03, 58.53], [132.25, 58.0], [132.13, 57.7], [132.53, 57.53], [132.75, 57.0], [132.53, 56.47], [132.0, 56.25], [131.75, 56.35], [131.5, 56.25], [131.25, 56.35], [131.18, 56.32], [131.03, 55.97], [130.5, 55.75], [130.25, 55.85], [130.0, 55.75], [129.5, 55.96], [129.18, 55.82], [129.03, 55.47], [128.68, 55.32], [128.65, 55.25], [128.75, 55.0], [128.53, 54.47], [128.0, 54.25], [127.47, 54.47], [127.32, 54.82], [126.97, 54.97], [126.8, 55.38], [126.5, 55.25], [125.97, 55.47], [125.75, 56.0], [125.85, 56.25], [125.75, 56.5], [125.97, 57.03]]]]}, "2012-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, 57.03], [126.5, 57.25], [126.75, 57.15], [126.82, 57.18], [126.97, 57.53], [127.5, 57.75], [127.75, 57.65], [128.0, 57.75], [128.25, 57.65], [128.32, 57.68], [128.47, 58.03], [129.0, 58.25], [129.25, 58.15], [129.32, 58.18], [129.47, 58.53], [130.0, 58.75], [130.25, 58.65], [130.5, 58.75], [130.75, 58.65], [131.0, 58.75], [131.25, 58.65], [131.5, 58.75], [131.75, 58.65], [132.0, 58.75], [132.53, 58.53], [132.68, 58.18], [132.75, 58.15], [133.0, 58.25], [133.53, 58.03], [133.75, 57.5], [133.53, 56.97], [133.18, 56.82], [133.13, 56.7], [133.25, 56.65], [133.5, 56.75], [134.03, 56.53], [134.25, 56.0], [134.03, 55.47], [133.5, 55.25], [133.25, 55.35], [133.18, 55.32], [133.03, 54.97], [132.5, 54.75], [132.25, 54.85], [132.0, 54.75], [131.47, 54.97], [131.25, 55.5], [131.35, 55.75], [131.3, 55.88], [131.0, 55.75], [130.75, 55.85], [130.68, 55.82], [130.53, 55.47], [130.0, 55.25], [129.5, 55.46], [129.0, 55.25], [128.75, 55.35], [128.68, 55.32], [128.65, 55.25], [128.75, 55.0], [128.53, 54.47], [128.0, 54.25], [127.47, 54.47], [127.32, 54.82], [126.97, 54.97], [126.82, 55.32], [126.75, 55.35], [126.5, 55.25], [125.97, 55.47], [125.75, 56.0], [125.85, 56.25], [125.75, 56.5], [125.97, 57.03]]]]}, "2012-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, 57.03], [126.5, 57.25], [126.75, 57.15], [126.82, 57.18], [126.97, 57.53], [127.5, 57.75], [127.75, 57.65], [127.82, 57.68], [127.97, 58.03], [128.5, 58.25], [128.75, 58.15], [129.0, 58.25], [129.25, 58.15], [129.32, 58.18], [129.47, 58.53], [130.0, 58.75], [130.25, 58.65], [130.5, 58.75], [130.75, 58.65], [130.88, 58.7], [130.82, 58.82], [130.47, 58.97], [130.25, 59.5], [130.47, 60.03], [131.0, 60.25], [131.25, 60.15], [131.5, 60.25], [131.75, 60.15], [131.82, 60.18], [131.97, 60.53], [132.5, 60.75], [132.75, 60.65], [133.0, 60.75], [133.25, 60.65], [133.5, 60.75], [134.03, 60.53], [134.25, 60.0], [134.03, 59.47], [133.5, 59.25], [133.75, 59.15], [134.0, 59.25], [134.25, 59.15], [134.5, 59.25], [135.03, 59.03], [135.25, 58.5], [135.03, 57.97], [134.68, 57.82], [134.63, 57.7], [134.75, 57.65], [135.0, 57.75], [135.53, 57.53], [135.75, 57.0], [135.53, 56.47], [135.0, 56.25], [134.75, 56.35], [134.68, 56.32], [134.53, 55.97], [134.18, 55.82], [134.03, 55.47], [133.5, 55.25], [133.25, 55.35], [133.18, 55.32], [133.03, 54.97], [132.5, 54.75], [132.25, 54.85], [132.0, 54.75], [131.47, 54.97], [131.25, 55.5], [131.35, 55.75], [131.3, 55.88], [131.0, 55.75], [130.75, 55.85], [130.68, 55.82], [130.53, 55.47], [130.0, 55.25], [129.5, 55.46], [129.0, 55.25], [128.75, 55.35], [128.68, 55.32], [128.65, 55.25], [128.75, 55.0], [128.53, 54.47], [128.0, 54.25], [127.47, 54.47], [127.32, 54.82], [126.97, 54.97], [126.82, 55.32], [126.75, 55.35], [126.5, 55.25], [125.97, 55.47], [125.75, 56.0], [125.85, 56.25], [125.75, 56.5], [125.97, 57.03]], [[133.25, 59.35], [133.18, 59.32], [133.13, 59.2], [133.25, 59.15], [133.5, 59.25], [133.25, 59.35]]]]}, "2012-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.0, 57.25], [127.25, 57.15], [127.32, 57.18], [127.47, 57.53], [127.82, 57.68], [127.97, 58.03], [128.5, 58.25], [128.75, 58.15], [129.0, 58.25], [129.25, 58.15], [129.32, 58.18], [129.47, 58.53], [129.88, 58.7], [129.75, 59.0], [129.97, 59.53], [130.32, 59.68], [130.47, 60.03], [131.0, 60.25], [131.25, 60.15], [131.5, 60.25], [131.75, 60.15], [131.82, 60.18], [131.97, 60.53], [132.5, 60.75], [132.75, 60.65], [133.0, 60.75], [133.25, 60.65], [133.5, 60.75], [134.03, 60.53], [134.25, 60.0], [134.03, 59.47], [133.5, 59.25], [133.75, 59.15], [134.0, 59.25], [134.25, 59.15], [134.5, 59.25], [135.03, 59.03], [135.25, 58.5], [135.03, 57.97], [134.68, 57.82], [134.63, 57.7], [134.75, 57.65], [135.0, 57.75], [135.53, 57.53], [135.75, 57.0], [135.53, 56.47], [135.0, 56.25], [134.75, 56.35], [134.68, 56.32], [134.53, 55.97], [134.18, 55.82], [134.03, 55.47], [133.5, 55.25], [133.25, 55.35], [133.18, 55.32], [133.03, 54.97], [132.5, 54.75], [132.25, 54.85], [132.0, 54.75], [131.47, 54.97], [131.25, 55.5], [131.35, 55.75], [131.3, 55.88], [131.0, 55.75], [130.75, 55.85], [130.68, 55.82], [130.53, 55.47], [130.0, 55.25], [129.5, 55.46], [129.0, 55.25], [128.75, 55.35], [128.68, 55.32], [128.53, 54.97], [128.0, 54.75], [127.47, 54.97], [127.32, 55.32], [127.25, 55.35], [127.0, 55.25], [126.75, 55.35], [126.5, 55.25], [125.97, 55.47], [125.75, 56.0], [125.97, 56.53], [126.32, 56.68], [126.47, 57.03], [127.0, 57.25]], [[133.25, 59.35], [133.18, 59.32], [133.13, 59.2], [133.25, 59.15], [133.5, 59.25], [133.25, 59.35]]]]}, "2012-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, 55.47], [125.75, 56.0], [125.97, 56.53], [126.5, 56.75], [126.75, 56.65], [127.0, 56.75], [127.25, 56.65], [127.32, 56.68], [127.47, 57.03], [127.88, 57.2], [127.75, 57.5], [127.97, 58.03], [128.5, 58.25], [128.75, 58.15], [129.0, 58.25], [129.25, 58.15], [129.32, 58.18], [129.47, 58.53], [129.88, 58.7], [129.75, 59.0], [129.97, 59.53], [130.32, 59.68], [130.47, 60.03], [131.0, 60.25], [131.25, 60.15], [131.5, 60.25], [131.75, 60.15], [131.82, 60.18], [131.97, 60.53], [132.5, 60.75], [132.75, 60.65], [133.0, 60.75], [133.25, 60.65], [133.5, 60.75], [134.03, 60.53], [134.25, 60.0], [134.03, 59.47], [133.5, 59.25], [133.75, 59.15], [134.0, 59.25], [134.25, 59.15], [134.5, 59.25], [135.03, 59.03], [135.25, 58.5], [135.03, 57.97], [134.68, 57.82], [134.63, 57.7], [134.75, 57.65], [135.0, 57.75], [135.53, 57.53], [135.75, 57.0], [135.53, 56.47], [135.0, 56.25], [134.75, 56.35], [134.68, 56.32], [134.53, 55.97], [134.0, 55.75], [133.75, 55.85], [133.68, 55.82], [133.53, 55.47], [133.0, 55.25], [132.75, 55.35], [132.68, 55.32], [132.53, 54.97], [132.0, 54.75], [131.47, 54.97], [131.25, 55.5], [131.47, 56.03], [131.82, 56.18], [131.85, 56.25], [131.82, 56.32], [131.75, 56.35], [131.5, 56.25], [131.0, 56.46], [130.68, 56.32], [130.53, 55.97], [130.0, 55.75], [129.47, 55.97], [129.32, 56.32], [129.2, 56.38], [129.15, 56.25], [129.25, 56.0], [129.03, 55.47], [128.5, 55.25], [128.25, 55.35], [128.0, 55.25], [127.75, 55.35], [127.5, 55.25], [127.25, 55.35], [127.0, 55.25], [126.75, 55.35], [126.5, 55.25], [125.97, 55.47]], [[133.25, 59.35], [133.18, 59.32], [133.13, 59.2], [133.25, 59.15], [133.5, 59.25], [133.25, 59.35]]]]}, "2012-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.97, 56.97], [127.75, 57.5], [127.97, 58.03], [128.5, 58.25], [128.75, 58.15], [129.0, 58.25], [129.25, 58.15], [129.5, 58.25], [129.75, 58.15], [130.0, 58.25], [130.3, 58.13], [130.38, 58.3], [129.97, 58.47], [129.75, 59.0], [129.97, 59.53], [130.32, 59.68], [130.47, 60.03], [131.0, 60.25], [131.5, 60.04], [132.0, 60.25], [132.25, 60.15], [132.5, 60.25], [133.03, 60.03], [133.25, 59.5], [133.13, 59.2], [133.25, 59.15], [133.5, 59.25], [133.75, 59.15], [134.0, 59.25], [134.25, 59.15], [134.5, 59.25], [135.03, 59.03], [135.25, 58.5], [135.03, 57.97], [134.5, 57.75], [134.75, 57.65], [135.0, 57.75], [135.53, 57.53], [135.75, 57.0], [135.53, 56.47], [135.0, 56.25], [134.75, 56.35], [134.5, 56.25], [134.25, 56.35], [134.0, 56.25], [133.75, 56.35], [133.5, 56.25], [132.97, 56.47], [132.82, 56.82], [132.47, 56.97], [132.25, 57.5], [132.03, 56.97], [131.5, 56.75], [131.25, 56.85], [131.0, 56.75], [130.5, 56.96], [130.0, 56.75], [129.75, 56.85], [129.5, 56.75], [129.25, 56.85], [129.0, 56.75], [128.75, 56.85], [128.5, 56.75], [127.97, 56.97]], [[134.25, 57.85], [134.18, 57.82], [134.13, 57.7], [134.25, 57.65], [134.5, 57.75], [134.25, 57.85]], [[132.35, 57.75], [132.32, 57.82], [132.07, 57.93], [132.25, 57.5], [132.35, 57.75]], [[131.68, 58.18], [131.93, 58.07], [131.8, 58.38], [131.63, 58.3], [131.68, 58.18]]]]}, "2012-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.5, 59.25], [134.03, 59.03], [134.25, 58.5], [134.03, 57.97], [133.5, 57.75], [132.97, 57.97], [132.75, 58.5], [132.97, 59.03], [133.5, 59.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -13.236681296655831}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -9.002514918083742}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-37.74069814067957, -38.03369174182026, -38.565364231965304, -40.236967117221695, -40.53342945908898, -39.529436642141775, -39.70025342620491, -40.18624059019842]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-39.14214193745866, -40.97228856134291, -41.2622257684242, -43.77641429173002, -45.171064735113674, -43.32203373785032, -42.94474661843694, -40.18624059019842]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.607798769396988, -8.223056970266398, -8.48086263847837, -9.677590338909065, -9.756167427092572, -8.545764326267507, -8.6954369866007, -7.877175265124237]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.811829591339318, -10.163082238211103, -10.77994544556529, -12.902078585896191, -13.236681296655831, -11.7017729414126, -10.529461138006582, -7.877175265124237]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3263132755271352, -1.3974959390412034, -1.4460904956380387, -1.7037191869753785, -1.7049069132275287, -1.4864910115374346, -1.4659831928636646, -1.2207795528635175]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5142956523008793, -1.7147916472416675, -1.7992290650897023, -2.2282408367402797, -2.290245259506552, -2.0620172511874566, -1.7576358918834005, -1.2207795528635175]}}