{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:08.592505", "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": "2010-Nov-27_to_2010-Nov-29_118.0_46.5"}, "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": 2010110001036}, "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": "November 27 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 29 2010"}, "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": 70447.38632974139}, "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", "Mongolia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": 46.5}, "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": 118.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "118.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 115.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 121.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.25, 47.0], [115.47, 47.53], [116.0, 47.75], [116.25, 47.65], [116.5, 47.75], [116.75, 47.65], [117.0, 47.75], [117.25, 47.65], [117.5, 47.75], [117.75, 47.65], [118.0, 47.75], [118.25, 47.65], [118.5, 47.75], [118.75, 47.65], [119.0, 47.75], [119.25, 47.65], [119.5, 47.75], [120.0, 47.54], [120.5, 47.75], [121.03, 47.53], [121.18, 47.18], [121.53, 47.03], [121.68, 46.68], [122.03, 46.53], [122.25, 46.0], [122.03, 45.47], [121.68, 45.32], [121.53, 44.97], [121.0, 44.75], [120.5, 44.96], [120.0, 44.75], [119.5, 44.96], [119.0, 44.75], [118.75, 44.85], [118.5, 44.75], [118.25, 44.85], [118.0, 44.75], [117.75, 44.85], [117.5, 44.75], [116.97, 44.97], [116.75, 45.5], [116.85, 45.75], [116.8, 45.88], [116.5, 45.75], [115.97, 45.97], [115.82, 46.32], [115.47, 46.47], [115.25, 47.0]]]]}, "2010-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.25, 47.0], [115.47, 47.53], [116.0, 47.75], [116.25, 47.65], [116.5, 47.75], [116.75, 47.65], [117.0, 47.75], [117.25, 47.65], [117.5, 47.75], [117.75, 47.65], [118.0, 47.75], [118.25, 47.65], [118.5, 47.75], [118.75, 47.65], [119.0, 47.75], [119.25, 47.65], [119.5, 47.75], [120.0, 47.54], [120.5, 47.75], [121.03, 47.53], [121.18, 47.18], [121.53, 47.03], [121.68, 46.68], [122.03, 46.53], [122.25, 46.0], [122.03, 45.47], [121.68, 45.32], [121.53, 44.97], [121.0, 44.75], [120.5, 44.96], [120.0, 44.75], [119.5, 44.96], [119.0, 44.75], [118.75, 44.85], [118.5, 44.75], [118.25, 44.85], [118.0, 44.75], [117.75, 44.85], [117.5, 44.75], [116.97, 44.97], [116.75, 45.5], [116.85, 45.75], [116.8, 45.88], [116.5, 45.75], [115.97, 45.97], [115.82, 46.32], [115.47, 46.47], [115.25, 47.0]]]]}, "2010-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.25, 47.0], [115.47, 47.53], [116.0, 47.75], [116.25, 47.65], [116.5, 47.75], [116.75, 47.65], [117.0, 47.75], [117.25, 47.65], [117.5, 47.75], [117.75, 47.65], [118.0, 47.75], [118.25, 47.65], [118.5, 47.75], [118.75, 47.65], [119.0, 47.75], [119.25, 47.65], [119.5, 47.75], [120.0, 47.54], [120.5, 47.75], [121.03, 47.53], [121.18, 47.18], [121.53, 47.03], [121.68, 46.68], [122.03, 46.53], [122.25, 46.0], [122.03, 45.47], [121.68, 45.32], [121.53, 44.97], [121.0, 44.75], [120.5, 44.96], [120.0, 44.75], [119.5, 44.96], [119.0, 44.75], [118.75, 44.85], [118.5, 44.75], [118.25, 44.85], [118.0, 44.75], [117.75, 44.85], [117.5, 44.75], [116.97, 44.97], [116.75, 45.5], [116.85, 45.75], [116.8, 45.88], [116.5, 45.75], [115.97, 45.97], [115.82, 46.32], [115.47, 46.47], [115.25, 47.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -13.302585048225382}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -9.318526132695908}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-21.224450677909005, -24.879617871226117, -22.491962939230405]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-23.465508758659865, -28.36969038946856, -26.11517825680005]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.875003041749582, -11.37162013396096, -8.708955222377188]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.99413791544697, -13.302585048225382, -11.565192550533027]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6234454085737653, -2.329843555970168, -1.7834654066352003]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8968231478881799, -2.6524797793753683, -2.2916001353979563]}}