{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:50.328059", "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-Sep-22_to_2015-Sep-25_128.5_62.0"}, "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": 2015090000783}, "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": "September 22 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 25 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 133653.37358687152}, "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": 62.0}, "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": 128.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "128.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 123.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 133.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 60.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 64.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.25, 62.5], [124.47, 63.03], [125.0, 63.25], [125.25, 63.15], [125.32, 63.18], [125.47, 63.53], [126.0, 63.75], [126.25, 63.65], [126.32, 63.68], [126.47, 64.03], [126.82, 64.18], [126.97, 64.53], [127.5, 64.75], [128.0, 64.54], [128.5, 64.75], [128.75, 64.65], [129.0, 64.75], [129.25, 64.65], [129.5, 64.75], [129.75, 64.65], [130.0, 64.75], [130.25, 64.65], [130.5, 64.75], [131.03, 64.53], [131.18, 64.18], [131.25, 64.15], [131.5, 64.25], [131.75, 64.15], [132.0, 64.25], [132.53, 64.03], [132.75, 63.5], [132.65, 63.25], [132.68, 63.18], [133.03, 63.03], [133.25, 62.5], [133.03, 61.97], [132.68, 61.82], [132.65, 61.75], [132.75, 61.5], [132.53, 60.97], [132.18, 60.82], [132.03, 60.47], [131.5, 60.25], [131.25, 60.35], [131.0, 60.25], [130.75, 60.35], [130.5, 60.25], [130.25, 60.35], [130.18, 60.32], [130.03, 59.97], [129.5, 59.75], [129.25, 59.85], [129.0, 59.75], [128.47, 59.97], [128.25, 60.5], [128.38, 60.8], [128.25, 60.85], [128.0, 60.75], [127.75, 60.85], [127.5, 60.75], [127.25, 60.85], [127.0, 60.75], [126.47, 60.97], [126.32, 61.32], [126.25, 61.35], [126.0, 61.25], [125.75, 61.35], [125.5, 61.25], [124.97, 61.47], [124.82, 61.82], [124.47, 61.97], [124.25, 62.5]]]]}, "2015-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.47, 63.03], [124.0, 63.25], [124.25, 63.15], [124.5, 63.25], [124.75, 63.15], [125.0, 63.25], [125.25, 63.15], [125.32, 63.18], [125.47, 63.53], [126.0, 63.75], [126.25, 63.65], [126.32, 63.68], [126.47, 64.03], [126.82, 64.18], [126.97, 64.53], [127.5, 64.75], [128.0, 64.54], [128.5, 64.75], [128.75, 64.65], [129.0, 64.75], [129.25, 64.65], [129.5, 64.75], [129.75, 64.65], [130.0, 64.75], [130.25, 64.65], [130.5, 64.75], [131.03, 64.53], [131.18, 64.18], [131.25, 64.15], [131.5, 64.25], [131.75, 64.15], [132.0, 64.25], [132.53, 64.03], [132.75, 63.5], [132.65, 63.25], [132.68, 63.18], [133.03, 63.03], [133.25, 62.5], [133.03, 61.97], [132.68, 61.82], [132.65, 61.75], [132.68, 61.68], [132.75, 61.65], [133.0, 61.75], [133.25, 61.65], [133.5, 61.75], [134.03, 61.53], [134.25, 61.0], [134.03, 60.47], [133.5, 60.25], [133.25, 60.35], [133.0, 60.25], [132.75, 60.35], [132.5, 60.25], [132.25, 60.35], [132.0, 60.25], [131.75, 60.35], [131.68, 60.32], [131.53, 59.97], [131.0, 59.75], [130.75, 59.85], [130.5, 59.75], [130.0, 59.96], [129.5, 59.75], [129.25, 59.85], [129.0, 59.75], [128.47, 59.97], [128.32, 60.32], [127.97, 60.47], [127.82, 60.82], [127.75, 60.85], [127.5, 60.75], [127.25, 60.85], [127.0, 60.75], [126.75, 60.85], [126.5, 60.75], [126.25, 60.85], [126.0, 60.75], [125.75, 60.85], [125.5, 60.75], [125.25, 60.85], [125.0, 60.75], [124.47, 60.97], [124.32, 61.32], [124.25, 61.35], [124.0, 61.25], [123.47, 61.47], [123.25, 62.0], [123.35, 62.25], [123.25, 62.5], [123.47, 63.03]]]]}, "2015-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.47, 63.03], [124.0, 63.25], [124.25, 63.15], [124.5, 63.25], [124.75, 63.15], [125.0, 63.25], [125.25, 63.15], [125.32, 63.18], [125.47, 63.53], [126.0, 63.75], [126.25, 63.65], [126.32, 63.68], [126.47, 64.03], [126.82, 64.18], [126.97, 64.53], [127.5, 64.75], [128.0, 64.54], [128.5, 64.75], [128.75, 64.65], [129.0, 64.75], [129.25, 64.65], [129.5, 64.75], [129.75, 64.65], [130.0, 64.75], [130.25, 64.65], [130.5, 64.75], [131.03, 64.53], [131.18, 64.18], [131.25, 64.15], [131.5, 64.25], [131.75, 64.15], [132.0, 64.25], [132.53, 64.03], [132.75, 63.5], [132.65, 63.25], [132.68, 63.18], [133.03, 63.03], [133.25, 62.5], [133.03, 61.97], [132.68, 61.82], [132.65, 61.75], [132.68, 61.68], [132.75, 61.65], [133.0, 61.75], [133.25, 61.65], [133.5, 61.75], [134.03, 61.53], [134.25, 61.0], [134.03, 60.47], [133.5, 60.25], [133.25, 60.35], [133.0, 60.25], [132.75, 60.35], [132.5, 60.25], [132.25, 60.35], [132.0, 60.25], [131.75, 60.35], [131.68, 60.32], [131.53, 59.97], [131.0, 59.75], [130.75, 59.85], [130.5, 59.75], [130.0, 59.96], [129.5, 59.75], [129.25, 59.85], [129.0, 59.75], [128.47, 59.97], [128.32, 60.32], [127.97, 60.47], [127.82, 60.82], [127.75, 60.85], [127.5, 60.75], [127.25, 60.85], [127.0, 60.75], [126.75, 60.85], [126.5, 60.75], [126.25, 60.85], [126.0, 60.75], [125.75, 60.85], [125.5, 60.75], [125.25, 60.85], [125.0, 60.75], [124.47, 60.97], [124.32, 61.32], [124.25, 61.35], [124.0, 61.25], [123.47, 61.47], [123.25, 62.0], [123.35, 62.25], [123.25, 62.5], [123.47, 63.03]]]]}, "2015-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.47, 63.03], [124.0, 63.25], [124.25, 63.15], [124.5, 63.25], [124.75, 63.15], [125.0, 63.25], [125.25, 63.15], [125.5, 63.25], [125.75, 63.15], [126.0, 63.25], [126.25, 63.15], [126.5, 63.25], [126.75, 63.15], [127.0, 63.25], [127.53, 63.03], [127.68, 62.68], [127.75, 62.65], [128.0, 62.75], [128.25, 62.65], [128.5, 62.75], [128.75, 62.65], [129.0, 62.75], [129.53, 62.53], [129.7, 62.13], [130.0, 62.25], [130.25, 62.15], [130.5, 62.25], [130.75, 62.15], [131.0, 62.25], [131.53, 62.03], [131.68, 61.68], [131.75, 61.65], [132.0, 61.75], [132.25, 61.65], [132.5, 61.75], [132.75, 61.65], [133.0, 61.75], [133.25, 61.65], [133.5, 61.75], [134.03, 61.53], [134.25, 61.0], [134.03, 60.47], [133.5, 60.25], [133.25, 60.35], [133.0, 60.25], [132.75, 60.35], [132.5, 60.25], [132.25, 60.35], [132.0, 60.25], [131.75, 60.35], [131.68, 60.32], [131.53, 59.97], [131.0, 59.75], [130.75, 59.85], [130.5, 59.75], [130.0, 59.96], [129.5, 59.75], [129.25, 59.85], [129.0, 59.75], [128.47, 59.97], [128.32, 60.32], [127.97, 60.47], [127.82, 60.82], [127.75, 60.85], [127.5, 60.75], [127.25, 60.85], [127.0, 60.75], [126.75, 60.85], [126.5, 60.75], [126.25, 60.85], [126.0, 60.75], [125.75, 60.85], [125.5, 60.75], [125.25, 60.85], [125.0, 60.75], [124.47, 60.97], [124.32, 61.32], [124.25, 61.35], [124.0, 61.25], [123.47, 61.47], [123.25, 62.0], [123.35, 62.25], [123.25, 62.5], [123.47, 63.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.267594366759056}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.758957549397377}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.7118865134315229, -1.5290003559770753, -2.0225252296756935, -1.932763575031629]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.706270320993781, -3.2306123729650267, -3.7014266413648897, -2.357640824309158]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.207739106468165, -4.832667212534031, -5.087139268513106, -4.8616098928780085]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.696680056524258, -5.650924825057018, -6.267594366759056, -5.634292704285031]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.401241714959879, -1.578659606752518, -1.5938670756953264, -1.5089737649266217]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.567839217054348, -1.8173151890841717, -1.8684973097268789, -1.6833699600798062]}}