{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:02.168297", "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": "2017-Jan-13_to_2017-Jan-15_82.5_59.0"}, "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": 2017010000525}, "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 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 15 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 70359.92185404792}, "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": ["W.Siberia"]}, "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": 59.0}, "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": 82.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "82.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 79.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 83.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 58.0], [79.35, 58.25], [79.25, 58.5], [79.47, 59.03], [79.82, 59.18], [79.85, 59.25], [79.75, 59.5], [79.97, 60.03], [80.32, 60.18], [80.35, 60.25], [80.25, 60.5], [80.47, 61.03], [80.82, 61.18], [80.97, 61.53], [81.5, 61.75], [82.03, 61.53], [82.18, 61.18], [82.25, 61.15], [82.5, 61.25], [83.03, 61.03], [83.18, 60.68], [83.53, 60.53], [83.68, 60.18], [84.03, 60.03], [84.25, 59.5], [84.03, 58.97], [83.68, 58.82], [83.65, 58.75], [83.75, 58.5], [83.53, 57.97], [83.18, 57.82], [83.03, 57.47], [82.5, 57.25], [82.25, 57.35], [82.18, 57.32], [82.03, 56.97], [81.68, 56.82], [81.53, 56.47], [81.0, 56.25], [80.75, 56.35], [80.5, 56.25], [80.25, 56.35], [80.0, 56.25], [79.75, 56.35], [79.5, 56.25], [78.97, 56.47], [78.75, 57.0], [78.97, 57.53], [79.32, 57.68], [79.35, 57.75], [79.25, 58.0]]]]}, "2017-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 58.0], [79.35, 58.25], [79.25, 58.5], [79.47, 59.03], [79.82, 59.18], [79.85, 59.25], [79.75, 59.5], [79.97, 60.03], [80.32, 60.18], [80.35, 60.25], [80.25, 60.5], [80.47, 61.03], [80.82, 61.18], [80.97, 61.53], [81.5, 61.75], [82.03, 61.53], [82.18, 61.18], [82.25, 61.15], [82.5, 61.25], [83.03, 61.03], [83.18, 60.68], [83.53, 60.53], [83.68, 60.18], [84.03, 60.03], [84.25, 59.5], [84.03, 58.97], [83.68, 58.82], [83.65, 58.75], [83.75, 58.5], [83.53, 57.97], [83.18, 57.82], [83.03, 57.47], [82.5, 57.25], [82.25, 57.35], [82.18, 57.32], [82.03, 56.97], [81.68, 56.82], [81.53, 56.47], [81.0, 56.25], [80.75, 56.35], [80.5, 56.25], [80.25, 56.35], [80.0, 56.25], [79.75, 56.35], [79.5, 56.25], [78.97, 56.47], [78.75, 57.0], [78.97, 57.53], [79.32, 57.68], [79.35, 57.75], [79.25, 58.0]]]]}, "2017-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 58.0], [79.35, 58.25], [79.25, 58.5], [79.47, 59.03], [79.82, 59.18], [79.85, 59.25], [79.75, 59.5], [79.97, 60.03], [80.32, 60.18], [80.35, 60.25], [80.25, 60.5], [80.47, 61.03], [80.82, 61.18], [80.97, 61.53], [81.5, 61.75], [82.03, 61.53], [82.18, 61.18], [82.25, 61.15], [82.5, 61.25], [83.03, 61.03], [83.18, 60.68], [83.53, 60.53], [83.68, 60.18], [84.03, 60.03], [84.25, 59.5], [84.03, 58.97], [83.68, 58.82], [83.65, 58.75], [83.75, 58.5], [83.53, 57.97], [83.18, 57.82], [83.03, 57.47], [82.5, 57.25], [82.25, 57.35], [82.18, 57.32], [82.03, 56.97], [81.68, 56.82], [81.53, 56.47], [81.0, 56.25], [80.75, 56.35], [80.5, 56.25], [80.25, 56.35], [80.0, 56.25], [79.75, 56.35], [79.5, 56.25], [78.97, 56.47], [78.75, 57.0], [78.97, 57.53], [79.32, 57.68], [79.35, 57.75], [79.25, 58.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -22.438144058391828}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -16.451557658672982}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-34.27370353102103, -37.79015363619135, -33.78299517439217]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-36.52982442678669, -42.21691343179339, -38.80587181327758]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-15.099921747403739, -19.039241166978414, -15.215510061636792]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-16.767275864691527, -22.438144058391828, -19.30061427303434]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5791420131788525, -2.0248993763528507, -1.6560636435789478]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7619230966747006, -2.2805557850843847, -2.042879307043884]}}