{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:37.179995", "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": "2016-Jan-29_to_2016-Feb-01_132.0_44.5"}, "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": 2016010000790}, "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 29 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 01 2016"}, "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": 55094.79214006235}, "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": ["China", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "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": 44.5}, "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": 132.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "132.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 130.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 134.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 42.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 45.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.25, 44.0], [130.47, 44.53], [130.88, 44.7], [130.75, 45.0], [130.85, 45.25], [130.75, 45.5], [130.97, 46.03], [131.5, 46.25], [132.0, 46.04], [132.5, 46.25], [133.0, 46.04], [133.5, 46.25], [134.0, 46.04], [134.5, 46.25], [135.03, 46.03], [135.25, 45.5], [135.15, 45.25], [135.25, 45.0], [135.03, 44.47], [134.68, 44.32], [134.53, 43.97], [134.13, 43.8], [134.18, 43.68], [134.53, 43.53], [134.75, 43.0], [134.53, 42.47], [134.0, 42.25], [133.47, 42.47], [133.32, 42.82], [132.97, 42.97], [132.82, 43.32], [132.75, 43.35], [132.68, 43.32], [132.53, 42.97], [132.0, 42.75], [131.75, 42.85], [131.5, 42.75], [130.97, 42.97], [130.82, 43.32], [130.47, 43.47], [130.25, 44.0]]]]}, "2016-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.25, 44.0], [130.47, 44.53], [130.88, 44.7], [130.75, 45.0], [130.85, 45.25], [130.75, 45.5], [130.97, 46.03], [131.5, 46.25], [132.0, 46.04], [132.5, 46.25], [133.0, 46.04], [133.5, 46.25], [134.0, 46.04], [134.5, 46.25], [135.03, 46.03], [135.25, 45.5], [135.15, 45.25], [135.25, 45.0], [135.03, 44.47], [134.68, 44.32], [134.53, 43.97], [134.13, 43.8], [134.18, 43.68], [134.53, 43.53], [134.75, 43.0], [134.53, 42.47], [134.0, 42.25], [133.47, 42.47], [133.32, 42.82], [132.97, 42.97], [132.82, 43.32], [132.75, 43.35], [132.68, 43.32], [132.53, 42.97], [132.0, 42.75], [131.75, 42.85], [131.5, 42.75], [130.97, 42.97], [130.82, 43.32], [130.47, 43.47], [130.25, 44.0]]]]}, "2016-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.25, 44.0], [130.47, 44.53], [130.88, 44.7], [130.75, 45.0], [130.85, 45.25], [130.75, 45.5], [130.97, 46.03], [131.5, 46.25], [132.0, 46.04], [132.5, 46.25], [133.0, 46.04], [133.5, 46.25], [134.0, 46.04], [134.5, 46.25], [135.03, 46.03], [135.25, 45.5], [135.15, 45.25], [135.25, 45.0], [135.03, 44.47], [134.68, 44.32], [134.53, 43.97], [134.13, 43.8], [134.18, 43.68], [134.53, 43.53], [134.75, 43.0], [134.53, 42.47], [134.0, 42.25], [133.47, 42.47], [133.32, 42.82], [132.97, 42.97], [132.82, 43.32], [132.75, 43.35], [132.68, 43.32], [132.53, 42.97], [132.0, 42.75], [131.75, 42.85], [131.5, 42.75], [130.97, 42.97], [130.82, 43.32], [130.47, 43.47], [130.25, 44.0]]]]}, "2016-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.75, 44.0], [130.97, 44.53], [131.32, 44.68], [131.35, 44.75], [131.25, 45.0], [131.47, 45.53], [132.0, 45.75], [132.25, 45.65], [132.5, 45.75], [133.03, 45.53], [133.25, 45.0], [133.15, 44.75], [133.25, 44.5], [133.03, 43.97], [132.68, 43.82], [132.65, 43.75], [132.75, 43.5], [132.53, 42.97], [132.0, 42.75], [131.47, 42.97], [131.32, 43.32], [130.97, 43.47], [130.75, 44.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.536089298952078}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.307309342548532}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-23.334299358095365, -23.396134181667406, -22.52009244998365, -20.2878809784996]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-25.131557155452356, -26.057294501750107, -25.61301899568764, -21.549687308287815]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.6034617187409586, -7.769352123787711, -6.93909579357635, -5.956825366078099]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.256824230356074, -10.536089298952078, -8.813702868149534, -6.965240433077241]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7301108678178672, -1.8134870565938044, -1.6040788452887857, -1.4353789676667397]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3124413861478916, -2.444854441117973, -2.0342322501651573, -1.5036613053826366]}}