{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:37.395388", "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-Jun-03_to_2012-Jun-07_157.5_63.5"}, "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": 2012060000196}, "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 03 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 07 2012"}, "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": "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": 322676.455249734}, "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-Arctic", "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": 63.5}, "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": 157.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "157.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 139.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 159.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 61.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 66.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.75, 63.5], [138.97, 64.03], [139.5, 64.25], [139.75, 64.15], [139.82, 64.18], [139.97, 64.53], [140.32, 64.68], [140.47, 65.03], [141.0, 65.25], [141.25, 65.15], [141.5, 65.25], [141.75, 65.15], [142.0, 65.25], [142.25, 65.15], [142.5, 65.25], [142.75, 65.15], [143.0, 65.25], [143.25, 65.15], [143.32, 65.18], [143.47, 65.53], [144.0, 65.75], [144.25, 65.65], [144.38, 65.7], [144.25, 66.0], [144.47, 66.53], [145.0, 66.75], [145.25, 66.65], [145.5, 66.75], [145.75, 66.65], [146.0, 66.75], [146.25, 66.65], [146.5, 66.75], [147.03, 66.53], [147.18, 66.18], [147.25, 66.15], [147.5, 66.25], [147.75, 66.15], [148.0, 66.25], [148.53, 66.03], [148.68, 65.68], [148.75, 65.65], [149.0, 65.75], [149.53, 65.53], [149.75, 65.0], [149.65, 64.75], [149.75, 64.5], [149.54, 64.0], [149.68, 63.68], [149.75, 63.65], [149.82, 63.68], [149.97, 64.03], [150.5, 64.25], [150.75, 64.15], [151.0, 64.25], [151.25, 64.15], [151.32, 64.18], [151.35, 64.25], [151.25, 64.5], [151.47, 65.03], [151.82, 65.18], [151.85, 65.25], [151.75, 65.5], [151.85, 65.75], [151.75, 66.0], [151.97, 66.53], [152.5, 66.75], [152.75, 66.65], [153.0, 66.75], [153.25, 66.65], [153.5, 66.75], [153.75, 66.65], [154.0, 66.75], [154.25, 66.65], [154.5, 66.75], [154.75, 66.65], [155.0, 66.75], [155.25, 66.65], [155.5, 66.75], [155.75, 66.65], [156.0, 66.75], [156.25, 66.65], [156.5, 66.75], [156.75, 66.65], [157.0, 66.75], [157.53, 66.53], [157.68, 66.18], [157.75, 66.15], [158.0, 66.25], [158.25, 66.15], [158.5, 66.25], [159.03, 66.03], [159.18, 65.68], [159.25, 65.65], [159.5, 65.75], [160.03, 65.53], [160.25, 65.0], [160.04, 64.5], [160.25, 64.0], [160.03, 63.47], [159.68, 63.32], [159.53, 62.97], [159.18, 62.82], [159.03, 62.47], [158.5, 62.25], [158.25, 62.35], [158.0, 62.25], [157.75, 62.35], [157.5, 62.25], [157.25, 62.35], [157.0, 62.25], [156.75, 62.35], [156.5, 62.25], [156.25, 62.35], [156.18, 62.32], [156.03, 61.97], [155.5, 61.75], [155.25, 61.85], [155.18, 61.82], [155.03, 61.47], [154.68, 61.32], [154.53, 60.97], [154.0, 60.75], [153.75, 60.85], [153.5, 60.75], [153.25, 60.85], [153.0, 60.75], [152.75, 60.85], [152.5, 60.75], [152.25, 60.85], [152.0, 60.75], [151.75, 60.85], [151.5, 60.75], [151.25, 60.85], [151.0, 60.75], [150.75, 60.85], [150.5, 60.75], [150.25, 60.85], [150.0, 60.75], [149.47, 60.97], [149.32, 61.32], [149.25, 61.35], [149.0, 61.25], [148.75, 61.35], [148.5, 61.25], [147.97, 61.47], [147.82, 61.82], [147.75, 61.85], [147.5, 61.75], [147.25, 61.85], [147.0, 61.75], [146.47, 61.97], [146.32, 62.32], [146.25, 62.35], [146.0, 62.25], [145.75, 62.35], [145.5, 62.25], [145.25, 62.35], [145.0, 62.25], [144.75, 62.35], [144.5, 62.25], [143.97, 62.47], [143.82, 62.82], [143.75, 62.85], [143.68, 62.82], [143.53, 62.47], [143.0, 62.25], [142.75, 62.35], [142.5, 62.25], [142.25, 62.35], [142.0, 62.25], [141.75, 62.35], [141.5, 62.25], [141.25, 62.35], [141.0, 62.25], [140.5, 62.46], [140.0, 62.25], [139.47, 62.47], [139.32, 62.82], [138.97, 62.97], [138.75, 63.5]]]]}, "2012-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.75, 63.5], [138.97, 64.03], [139.5, 64.25], [139.75, 64.15], [139.82, 64.18], [139.97, 64.53], [140.32, 64.68], [140.47, 65.03], [141.0, 65.25], [141.25, 65.15], [141.5, 65.25], [141.75, 65.15], [142.0, 65.25], [142.25, 65.15], [142.5, 65.25], [142.75, 65.15], [143.0, 65.25], [143.25, 65.15], [143.32, 65.18], [143.47, 65.53], [144.0, 65.75], [144.25, 65.65], [144.38, 65.7], [144.25, 66.0], [144.47, 66.53], [145.0, 66.75], [145.25, 66.65], [145.5, 66.75], [145.75, 66.65], [146.0, 66.75], [146.25, 66.65], [146.5, 66.75], [147.03, 66.53], [147.18, 66.18], [147.25, 66.15], [147.5, 66.25], [147.75, 66.15], [148.0, 66.25], [148.53, 66.03], [148.68, 65.68], [148.75, 65.65], [149.0, 65.75], [149.53, 65.53], [149.75, 65.0], [149.65, 64.75], [149.75, 64.5], [149.54, 64.0], [149.68, 63.68], [149.75, 63.65], [149.82, 63.68], [149.97, 64.03], [150.5, 64.25], [150.75, 64.15], [151.0, 64.25], [151.25, 64.15], [151.32, 64.18], [151.35, 64.25], [151.25, 64.5], [151.47, 65.03], [151.82, 65.18], [151.85, 65.25], [151.75, 65.5], [151.85, 65.75], [151.75, 66.0], [151.97, 66.53], [152.5, 66.75], [152.75, 66.65], [153.0, 66.75], [153.25, 66.65], [153.5, 66.75], [153.75, 66.65], [154.0, 66.75], [154.25, 66.65], [154.5, 66.75], [154.75, 66.65], [155.0, 66.75], [155.25, 66.65], [155.5, 66.75], [155.75, 66.65], [156.0, 66.75], [156.25, 66.65], [156.5, 66.75], [156.75, 66.65], [157.0, 66.75], [157.53, 66.53], [157.68, 66.18], [157.75, 66.15], [158.0, 66.25], [158.25, 66.15], [158.5, 66.25], [159.03, 66.03], [159.18, 65.68], [159.25, 65.65], [159.5, 65.75], [160.03, 65.53], [160.25, 65.0], [160.04, 64.5], [160.25, 64.0], [160.03, 63.47], [159.68, 63.32], [159.53, 62.97], [159.18, 62.82], [159.03, 62.47], [158.5, 62.25], [158.25, 62.35], [158.0, 62.25], [157.75, 62.35], [157.5, 62.25], [157.25, 62.35], [157.18, 62.32], [157.03, 61.97], [156.5, 61.75], [156.0, 61.96], [155.5, 61.75], [155.25, 61.85], [155.18, 61.82], [155.03, 61.47], [154.68, 61.32], [154.53, 60.97], [154.0, 60.75], [153.75, 60.85], [153.5, 60.75], [153.25, 60.85], [153.0, 60.75], [152.75, 60.85], [152.5, 60.75], [152.25, 60.85], [152.0, 60.75], [151.75, 60.85], [151.5, 60.75], [151.25, 60.85], [151.0, 60.75], [150.75, 60.85], [150.5, 60.75], [150.25, 60.85], [150.0, 60.75], [149.47, 60.97], [149.32, 61.32], [149.25, 61.35], [149.0, 61.25], [148.75, 61.35], [148.5, 61.25], [147.97, 61.47], [147.82, 61.82], [147.75, 61.85], [147.5, 61.75], [147.25, 61.85], [147.0, 61.75], [146.47, 61.97], [146.32, 62.32], [146.25, 62.35], [146.0, 62.25], [145.75, 62.35], [145.5, 62.25], [145.25, 62.35], [145.0, 62.25], [144.75, 62.35], [144.5, 62.25], [143.97, 62.47], [143.82, 62.82], [143.75, 62.85], [143.68, 62.82], [143.53, 62.47], [143.0, 62.25], [142.75, 62.35], [142.5, 62.25], [142.25, 62.35], [142.0, 62.25], [141.75, 62.35], [141.5, 62.25], [141.25, 62.35], [141.0, 62.25], [140.5, 62.46], [140.0, 62.25], [139.47, 62.47], [139.32, 62.82], [138.97, 62.97], [138.75, 63.5]]]]}, "2012-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.75, 63.5], [138.97, 64.03], [139.5, 64.25], [139.75, 64.15], [139.82, 64.18], [139.97, 64.53], [140.32, 64.68], [140.47, 65.03], [141.0, 65.25], [141.25, 65.15], [141.5, 65.25], [141.75, 65.15], [142.0, 65.25], [142.25, 65.15], [142.5, 65.25], [142.75, 65.15], [143.0, 65.25], [143.25, 65.15], [143.32, 65.18], [143.47, 65.53], [144.0, 65.75], [144.25, 65.65], [144.38, 65.7], [144.25, 66.0], [144.47, 66.53], [145.0, 66.75], [145.25, 66.65], [145.5, 66.75], [145.75, 66.65], [146.0, 66.75], [146.25, 66.65], [146.5, 66.75], [147.03, 66.53], [147.18, 66.18], [147.25, 66.15], [147.5, 66.25], [147.75, 66.15], [148.0, 66.25], [148.53, 66.03], [148.68, 65.68], [148.75, 65.65], [149.0, 65.75], [149.53, 65.53], [149.75, 65.0], [149.65, 64.75], [149.75, 64.5], [149.54, 64.0], [149.68, 63.68], [149.75, 63.65], [149.82, 63.68], [149.97, 64.03], [150.5, 64.25], [150.75, 64.15], [151.0, 64.25], [151.25, 64.15], [151.32, 64.18], [151.35, 64.25], [151.25, 64.5], [151.47, 65.03], [151.82, 65.18], [151.85, 65.25], [151.75, 65.5], [151.85, 65.75], [151.75, 66.0], [151.97, 66.53], [152.5, 66.75], [152.75, 66.65], [153.0, 66.75], [153.25, 66.65], [153.5, 66.75], [153.75, 66.65], [154.0, 66.75], [154.25, 66.65], [154.5, 66.75], [154.75, 66.65], [155.0, 66.75], [155.25, 66.65], [155.5, 66.75], [155.75, 66.65], [156.0, 66.75], [156.25, 66.65], [156.5, 66.75], [156.75, 66.65], [157.0, 66.75], [157.53, 66.53], [157.68, 66.18], [157.75, 66.15], [158.0, 66.25], [158.25, 66.15], [158.5, 66.25], [159.03, 66.03], [159.18, 65.68], [159.25, 65.65], [159.5, 65.75], [160.03, 65.53], [160.25, 65.0], [160.04, 64.5], [160.25, 64.0], [160.03, 63.47], [159.68, 63.32], [159.53, 62.97], [159.18, 62.82], [159.03, 62.47], [158.5, 62.25], [158.25, 62.35], [158.0, 62.25], [157.75, 62.35], [157.5, 62.25], [157.25, 62.35], [157.18, 62.32], [157.03, 61.97], [156.5, 61.75], [156.0, 61.96], [155.5, 61.75], [155.25, 61.85], [155.18, 61.82], [155.03, 61.47], [154.68, 61.32], [154.53, 60.97], [154.0, 60.75], [153.75, 60.85], [153.5, 60.75], [153.25, 60.85], [153.0, 60.75], [152.75, 60.85], [152.5, 60.75], [152.25, 60.85], [152.0, 60.75], [151.75, 60.85], [151.5, 60.75], [151.25, 60.85], [151.0, 60.75], [150.75, 60.85], [150.5, 60.75], [150.25, 60.85], [150.0, 60.75], [149.47, 60.97], [149.32, 61.32], [149.25, 61.35], [149.0, 61.25], [148.75, 61.35], [148.5, 61.25], [147.97, 61.47], [147.82, 61.82], [147.75, 61.85], [147.5, 61.75], [147.25, 61.85], [147.0, 61.75], [146.47, 61.97], [146.32, 62.32], [146.25, 62.35], [146.0, 62.25], [145.75, 62.35], [145.5, 62.25], [145.25, 62.35], [145.0, 62.25], [144.75, 62.35], [144.5, 62.25], [143.97, 62.47], [143.82, 62.82], [143.75, 62.85], [143.68, 62.82], [143.53, 62.47], [143.0, 62.25], [142.75, 62.35], [142.5, 62.25], [142.25, 62.35], [142.0, 62.25], [141.75, 62.35], [141.5, 62.25], [141.25, 62.35], [141.0, 62.25], [140.5, 62.46], [140.0, 62.25], [139.47, 62.47], [139.32, 62.82], [138.97, 62.97], [138.75, 63.5]]]]}, "2012-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[154.47, 64.03], [155.0, 64.25], [155.25, 64.15], [155.32, 64.18], [155.47, 64.53], [156.0, 64.75], [156.25, 64.65], [156.32, 64.68], [156.47, 65.03], [156.82, 65.18], [156.97, 65.53], [157.5, 65.75], [157.75, 65.65], [158.0, 65.75], [158.25, 65.65], [158.5, 65.75], [158.75, 65.65], [159.0, 65.75], [159.25, 65.65], [159.5, 65.75], [160.03, 65.53], [160.25, 65.0], [160.04, 64.5], [160.25, 64.0], [160.03, 63.47], [159.68, 63.32], [159.53, 62.97], [159.18, 62.82], [159.03, 62.47], [158.5, 62.25], [158.25, 62.35], [158.0, 62.25], [157.75, 62.35], [157.5, 62.25], [157.25, 62.35], [157.18, 62.32], [157.03, 61.97], [156.5, 61.75], [155.97, 61.97], [155.82, 62.32], [155.5, 62.46], [155.0, 62.25], [154.47, 62.47], [154.25, 63.0], [154.35, 63.25], [154.25, 63.5], [154.47, 64.03]]]]}, "2012-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[157.5, 64.25], [158.03, 64.03], [158.25, 63.5], [158.03, 62.97], [157.5, 62.75], [156.97, 62.97], [156.75, 63.5], [156.97, 64.03], [157.5, 64.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.8101259465638}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.222800297832372}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.0868174801537975, 0.15915868801931765, 2.3634766773250817, 2.9325536164656114, 3.889417253399131]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-4.919825544854859, -6.184503200853271, -3.6962411959144106, -1.4128646087913808, 3.889417253399131]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.060551451185259, -8.314160128361642, -6.512661640785042, -5.776927168119937, -4.323796401554205]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.602122096343692, -9.8101259465638, -7.945756334447083, -6.974184076047038, -4.323796401554205]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.819325586009322, -2.1939467535251413, -1.6954582996264185, -1.5893767237868786, -1.2451418982490439]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.413128425126736, -2.630707071065556, -2.0863131794240157, -1.8881047808826141, -1.2451418982490439]}}