{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:28.320678", "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": "2014-Jan-13_to_2014-Jan-19_103.5_67.0"}, "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": 2014010000619}, "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": "January 13 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 19 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 122752.57914973373}, "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"]}, "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": 67.0}, "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": 103.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "103.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 98.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 110.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 64.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 68.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.47, 66.97], [104.25, 67.5], [104.47, 68.03], [105.0, 68.25], [105.25, 68.15], [105.5, 68.25], [105.8, 68.13], [105.97, 68.53], [106.5, 68.75], [106.75, 68.65], [107.0, 68.75], [107.53, 68.53], [107.75, 68.0], [107.53, 67.47], [107.0, 67.25], [106.75, 67.35], [106.5, 67.25], [106.2, 67.38], [106.03, 66.97], [105.5, 66.75], [105.25, 66.85], [105.0, 66.75], [104.47, 66.97]]]]}, "2014-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.97, 67.53], [102.5, 67.75], [102.75, 67.65], [103.0, 67.75], [103.25, 67.65], [103.5, 67.75], [104.03, 67.53], [104.25, 67.0], [104.03, 66.47], [103.5, 66.25], [103.25, 66.35], [103.0, 66.25], [102.75, 66.35], [102.5, 66.25], [101.97, 66.47], [101.75, 67.0], [101.97, 67.53]]], [[[107.75, 67.0], [107.97, 67.53], [108.5, 67.75], [109.03, 67.53], [109.25, 67.0], [109.03, 66.47], [108.5, 66.25], [107.97, 66.47], [107.75, 67.0]]], [[[99.97, 68.03], [100.5, 68.25], [100.75, 68.15], [101.0, 68.25], [101.53, 68.03], [101.75, 67.5], [101.53, 66.97], [101.0, 66.75], [100.75, 66.85], [100.5, 66.75], [99.97, 66.97], [99.75, 67.5], [99.97, 68.03]]], [[[104.47, 68.03], [105.0, 68.25], [105.25, 68.15], [105.5, 68.25], [105.8, 68.13], [105.97, 68.53], [106.5, 68.75], [106.75, 68.65], [107.0, 68.75], [107.53, 68.53], [107.75, 68.0], [107.65, 67.75], [107.75, 67.5], [107.53, 66.97], [107.0, 66.75], [106.75, 66.85], [106.68, 66.82], [106.53, 66.47], [106.0, 66.25], [105.47, 66.47], [105.32, 66.82], [105.25, 66.85], [105.0, 66.75], [104.47, 66.97], [104.25, 67.5], [104.47, 68.03]]]]}, "2014-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.97, 66.47], [107.75, 67.0], [107.97, 67.53], [108.5, 67.75], [109.03, 67.53], [109.25, 67.0], [109.03, 66.47], [108.5, 66.25], [107.97, 66.47]]], [[[99.75, 67.5], [99.97, 68.03], [100.5, 68.25], [100.75, 68.15], [101.0, 68.25], [101.25, 68.15], [101.5, 68.25], [101.75, 68.15], [102.0, 68.25], [102.25, 68.15], [102.5, 68.25], [102.75, 68.15], [103.0, 68.25], [103.25, 68.15], [103.5, 68.25], [103.75, 68.15], [104.0, 68.25], [104.5, 68.04], [105.0, 68.25], [105.25, 68.15], [105.5, 68.25], [105.8, 68.13], [105.97, 68.53], [106.5, 68.75], [106.75, 68.65], [107.0, 68.75], [107.53, 68.53], [107.75, 68.0], [107.65, 67.75], [107.75, 67.5], [107.53, 66.97], [107.0, 66.75], [106.75, 66.85], [106.68, 66.82], [106.53, 66.47], [106.0, 66.25], [105.47, 66.47], [105.32, 66.82], [105.25, 66.85], [105.0, 66.75], [104.5, 66.96], [104.18, 66.82], [104.03, 66.47], [103.5, 66.25], [103.25, 66.35], [103.0, 66.25], [102.75, 66.35], [102.5, 66.25], [101.97, 66.47], [101.82, 66.82], [101.75, 66.85], [101.5, 66.75], [101.25, 66.85], [101.0, 66.75], [100.75, 66.85], [100.5, 66.75], [99.97, 66.97], [99.75, 67.5]]]]}, "2014-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.75, 66.0], [97.97, 66.53], [98.5, 66.75], [98.75, 66.65], [99.0, 66.75], [99.53, 66.53], [99.68, 66.18], [100.03, 66.03], [100.25, 65.5], [100.03, 64.97], [99.5, 64.75], [98.97, 64.97], [98.82, 65.32], [98.75, 65.35], [98.5, 65.25], [97.97, 65.47], [97.75, 66.0]]], [[[99.97, 68.03], [100.5, 68.25], [100.75, 68.15], [101.0, 68.25], [101.25, 68.15], [101.5, 68.25], [101.75, 68.15], [102.0, 68.25], [102.25, 68.15], [102.5, 68.25], [102.75, 68.15], [103.0, 68.25], [103.25, 68.15], [103.5, 68.25], [103.75, 68.15], [104.0, 68.25], [104.25, 68.15], [104.5, 68.25], [104.75, 68.15], [105.0, 68.25], [105.53, 68.03], [105.68, 67.68], [105.75, 67.65], [105.82, 67.68], [105.97, 68.03], [106.5, 68.25], [106.75, 68.15], [107.0, 68.25], [107.53, 68.03], [107.75, 67.5], [107.57, 67.07], [107.82, 67.18], [107.97, 67.53], [108.5, 67.75], [109.03, 67.53], [109.25, 67.0], [109.03, 66.47], [108.68, 66.32], [108.53, 65.97], [108.0, 65.75], [107.47, 65.97], [107.25, 66.5], [107.43, 66.93], [107.0, 66.75], [106.75, 66.85], [106.68, 66.82], [106.65, 66.75], [106.68, 66.68], [107.03, 66.53], [107.25, 66.0], [107.04, 65.5], [107.25, 65.0], [107.03, 64.47], [106.5, 64.25], [106.25, 64.35], [106.0, 64.25], [105.5, 64.46], [105.0, 64.25], [104.75, 64.35], [104.5, 64.25], [104.25, 64.35], [104.0, 64.25], [103.75, 64.35], [103.5, 64.25], [103.25, 64.35], [103.0, 64.25], [102.47, 64.47], [102.25, 65.0], [102.35, 65.25], [102.32, 65.32], [102.0, 65.46], [101.5, 65.25], [100.97, 65.47], [100.75, 66.0], [100.88, 66.3], [100.47, 66.47], [100.32, 66.82], [99.97, 66.97], [99.75, 67.5], [99.97, 68.03]]]]}, "2014-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.97, 66.53], [98.32, 66.68], [98.47, 67.03], [99.0, 67.25], [99.25, 67.15], [99.5, 67.25], [100.03, 67.03], [100.18, 66.68], [100.25, 66.65], [100.38, 66.7], [100.25, 67.0], [100.47, 67.53], [100.82, 67.68], [100.97, 68.03], [101.5, 68.25], [101.75, 68.15], [102.0, 68.25], [102.25, 68.15], [102.5, 68.25], [102.75, 68.15], [103.0, 68.25], [103.25, 68.15], [103.5, 68.25], [103.75, 68.15], [104.0, 68.25], [104.25, 68.15], [104.5, 68.25], [105.03, 68.03], [105.18, 67.68], [105.25, 67.65], [105.5, 67.75], [105.75, 67.65], [106.0, 67.75], [106.53, 67.53], [106.75, 67.0], [106.65, 66.75], [106.68, 66.68], [106.75, 66.65], [107.0, 66.75], [107.25, 66.65], [107.32, 66.68], [107.47, 67.03], [108.0, 67.25], [108.53, 67.03], [108.75, 66.5], [108.65, 66.25], [108.75, 66.0], [108.65, 65.75], [108.68, 65.68], [108.75, 65.65], [109.0, 65.75], [109.25, 65.65], [109.5, 65.75], [109.75, 65.65], [110.0, 65.75], [110.25, 65.65], [110.5, 65.75], [111.03, 65.53], [111.25, 65.0], [111.03, 64.47], [110.5, 64.25], [110.25, 64.35], [110.0, 64.25], [109.75, 64.35], [109.5, 64.25], [109.25, 64.35], [109.0, 64.25], [108.75, 64.35], [108.5, 64.25], [108.25, 64.35], [108.0, 64.25], [107.75, 64.35], [107.5, 64.25], [107.25, 64.35], [107.0, 64.25], [106.75, 64.35], [106.5, 64.25], [106.25, 64.35], [106.0, 64.25], [105.75, 64.35], [105.5, 64.25], [105.25, 64.35], [105.0, 64.25], [104.75, 64.35], [104.5, 64.25], [104.25, 64.35], [104.0, 64.25], [103.75, 64.35], [103.5, 64.25], [103.25, 64.35], [103.0, 64.25], [102.75, 64.35], [102.5, 64.25], [102.25, 64.35], [102.0, 64.25], [101.75, 64.35], [101.5, 64.25], [101.25, 64.35], [101.0, 64.25], [100.75, 64.35], [100.5, 64.25], [100.25, 64.35], [100.0, 64.25], [99.47, 64.47], [99.32, 64.82], [99.0, 64.96], [98.5, 64.75], [97.97, 64.97], [97.75, 65.5], [97.85, 65.75], [97.75, 66.0], [97.97, 66.53]]]]}, "2014-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.97, 66.53], [98.32, 66.68], [98.47, 67.03], [99.0, 67.25], [99.25, 67.15], [99.5, 67.25], [100.03, 67.03], [100.18, 66.68], [100.25, 66.65], [100.38, 66.7], [100.25, 67.0], [100.47, 67.53], [100.82, 67.68], [100.97, 68.03], [101.5, 68.25], [101.75, 68.15], [102.0, 68.25], [102.25, 68.15], [102.5, 68.25], [102.75, 68.15], [103.0, 68.25], [103.25, 68.15], [103.5, 68.25], [103.75, 68.15], [104.0, 68.25], [104.25, 68.15], [104.5, 68.25], [105.03, 68.03], [105.18, 67.68], [105.25, 67.65], [105.5, 67.75], [105.75, 67.65], [106.0, 67.75], [106.53, 67.53], [106.75, 67.0], [106.65, 66.75], [106.68, 66.68], [106.75, 66.65], [107.0, 66.75], [107.25, 66.65], [107.32, 66.68], [107.47, 67.03], [108.0, 67.25], [108.53, 67.03], [108.75, 66.5], [108.65, 66.25], [108.75, 66.0], [108.65, 65.75], [108.68, 65.68], [108.75, 65.65], [109.0, 65.75], [109.25, 65.65], [109.5, 65.75], [109.75, 65.65], [110.0, 65.75], [110.25, 65.65], [110.5, 65.75], [111.03, 65.53], [111.25, 65.0], [111.03, 64.47], [110.5, 64.25], [110.25, 64.35], [110.0, 64.25], [109.75, 64.35], [109.5, 64.25], [109.25, 64.35], [109.0, 64.25], [108.75, 64.35], [108.5, 64.25], [108.25, 64.35], [108.0, 64.25], [107.75, 64.35], [107.5, 64.25], [107.25, 64.35], [107.0, 64.25], [106.75, 64.35], [106.5, 64.25], [106.25, 64.35], [106.0, 64.25], [105.75, 64.35], [105.5, 64.25], [105.25, 64.35], [105.0, 64.25], [104.75, 64.35], [104.5, 64.25], [104.25, 64.35], [104.0, 64.25], [103.75, 64.35], [103.5, 64.25], [103.25, 64.35], [103.0, 64.25], [102.75, 64.35], [102.5, 64.25], [102.25, 64.35], [102.0, 64.25], [101.75, 64.35], [101.5, 64.25], [101.25, 64.35], [101.0, 64.25], [100.75, 64.35], [100.5, 64.25], [100.25, 64.35], [100.0, 64.25], [99.47, 64.47], [99.32, 64.82], [99.0, 64.96], [98.5, 64.75], [97.97, 64.97], [97.75, 65.5], [97.85, 65.75], [97.75, 66.0], [97.97, 66.53]]]]}, "2014-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.97, 66.53], [98.32, 66.68], [98.47, 67.03], [99.0, 67.25], [99.25, 67.15], [99.5, 67.25], [100.03, 67.03], [100.18, 66.68], [100.25, 66.65], [100.38, 66.7], [100.25, 67.0], [100.47, 67.53], [101.0, 67.75], [101.25, 67.65], [101.5, 67.75], [102.03, 67.53], [102.18, 67.18], [102.25, 67.15], [102.5, 67.25], [102.75, 67.15], [102.82, 67.18], [102.97, 67.53], [103.5, 67.75], [103.75, 67.65], [104.0, 67.75], [104.25, 67.65], [104.5, 67.75], [104.75, 67.65], [105.0, 67.75], [105.25, 67.65], [105.5, 67.75], [106.03, 67.53], [106.18, 67.18], [106.53, 67.03], [106.68, 66.68], [106.75, 66.65], [107.0, 66.75], [107.25, 66.65], [107.32, 66.68], [107.47, 67.03], [108.0, 67.25], [108.53, 67.03], [108.75, 66.5], [108.65, 66.25], [108.75, 66.0], [108.65, 65.75], [108.68, 65.68], [108.75, 65.65], [109.0, 65.75], [109.25, 65.65], [109.5, 65.75], [109.75, 65.65], [110.0, 65.75], [110.25, 65.65], [110.5, 65.75], [111.03, 65.53], [111.25, 65.0], [111.03, 64.47], [110.5, 64.25], [110.25, 64.35], [110.0, 64.25], [109.75, 64.35], [109.5, 64.25], [109.25, 64.35], [109.0, 64.25], [108.75, 64.35], [108.5, 64.25], [108.25, 64.35], [108.0, 64.25], [107.75, 64.35], [107.5, 64.25], [107.25, 64.35], [107.0, 64.25], [106.75, 64.35], [106.5, 64.25], [106.25, 64.35], [106.0, 64.25], [105.75, 64.35], [105.5, 64.25], [105.25, 64.35], [105.0, 64.25], [104.75, 64.35], [104.5, 64.25], [104.25, 64.35], [104.0, 64.25], [103.75, 64.35], [103.5, 64.25], [103.25, 64.35], [103.0, 64.25], [102.75, 64.35], [102.5, 64.25], [102.25, 64.35], [102.0, 64.25], [101.75, 64.35], [101.5, 64.25], [101.25, 64.35], [101.0, 64.25], [100.75, 64.35], [100.5, 64.25], [100.25, 64.35], [100.0, 64.25], [99.47, 64.47], [99.32, 64.82], [99.0, 64.96], [98.5, 64.75], [97.97, 64.97], [97.75, 65.5], [97.85, 65.75], [97.75, 66.0], [97.97, 66.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -18.121642197382016}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -12.747986281600616}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-41.78453606277989, -42.836704482542615, -43.08234821131853, -43.45322130714791, -44.73289799122608, -45.58113014827384, -46.09752678731931]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-42.99626627433338, -46.488817073619515, -46.38834825517813, -46.06224438139307, -48.78588688355481, -49.8270264986148, -51.40402313348139]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-10.28895757665012, -10.76472607101229, -11.452219554361635, -11.451597797315083, -12.330551028131252, -13.491003689014773, -14.046247298177972]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.759462451501179, -12.444568129994678, -13.859030165791694, -13.360915823124571, -14.885021445161584, -16.564074320526913, -18.121642197382016]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3311346524721834, -1.3626261806569375, -1.4050037192077618, -1.4106866413967756, -1.4819611687268006, -1.5995434879850028, -1.6356298906966744]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3601480175199148, -1.5872777131769475, -1.6381361371105831, -1.5931689549049664, -1.7396993463058747, -1.9094710651175677, -1.8810760281502066]}}