{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:05.406984", "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": "2011-Aug-01_to_2011-Aug-05_68.5_54.0"}, "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": 2011080000182}, "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": "August 01 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 05 2011"}, "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": 53200.617746941454}, "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": ["Kazakhstan", "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": 54.0}, "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": 68.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "68.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 66.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 70.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[65.97, 54.53], [66.5, 54.75], [66.75, 54.65], [67.0, 54.75], [67.25, 54.65], [67.32, 54.68], [67.47, 55.03], [68.0, 55.25], [68.25, 55.15], [68.5, 55.25], [69.03, 55.03], [69.18, 54.68], [69.25, 54.65], [69.5, 54.75], [70.03, 54.53], [70.25, 54.0], [70.03, 53.47], [69.5, 53.25], [69.25, 53.35], [69.0, 53.25], [68.75, 53.35], [68.68, 53.32], [68.53, 52.97], [68.0, 52.75], [67.75, 52.85], [67.5, 52.75], [67.25, 52.85], [67.0, 52.75], [66.75, 52.85], [66.5, 52.75], [65.97, 52.97], [65.75, 53.5], [65.85, 53.75], [65.75, 54.0], [65.97, 54.53]]]]}, "2011-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[65.97, 54.53], [66.5, 54.75], [66.75, 54.65], [66.82, 54.68], [66.97, 55.03], [67.32, 55.18], [67.47, 55.53], [68.0, 55.75], [68.25, 55.65], [68.32, 55.68], [68.47, 56.03], [69.0, 56.25], [69.25, 56.15], [69.5, 56.25], [70.03, 56.03], [70.25, 55.5], [70.15, 55.25], [70.25, 55.0], [70.04, 54.5], [70.25, 54.0], [70.03, 53.47], [69.5, 53.25], [69.25, 53.35], [69.0, 53.25], [68.75, 53.35], [68.68, 53.32], [68.53, 52.97], [68.0, 52.75], [67.75, 52.85], [67.5, 52.75], [67.25, 52.85], [67.0, 52.75], [66.75, 52.85], [66.5, 52.75], [65.97, 52.97], [65.75, 53.5], [65.85, 53.75], [65.75, 54.0], [65.97, 54.53]]]]}, "2011-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[65.97, 54.53], [66.5, 54.75], [66.75, 54.65], [66.82, 54.68], [66.97, 55.03], [67.32, 55.18], [67.47, 55.53], [67.88, 55.7], [67.75, 56.0], [67.85, 56.25], [67.75, 56.5], [67.97, 57.03], [68.32, 57.18], [68.47, 57.53], [69.0, 57.75], [69.25, 57.65], [69.5, 57.75], [69.75, 57.65], [70.0, 57.75], [70.53, 57.53], [70.75, 57.0], [70.53, 56.47], [70.18, 56.32], [70.15, 56.25], [70.25, 56.0], [70.15, 55.75], [70.25, 55.5], [70.15, 55.25], [70.25, 55.0], [70.04, 54.5], [70.25, 54.0], [70.03, 53.47], [69.5, 53.25], [69.25, 53.35], [69.0, 53.25], [68.75, 53.35], [68.68, 53.32], [68.53, 52.97], [68.0, 52.75], [67.75, 52.85], [67.5, 52.75], [67.25, 52.85], [67.0, 52.75], [66.75, 52.85], [66.5, 52.75], [65.97, 52.97], [65.75, 53.5], [65.85, 53.75], [65.75, 54.0], [65.97, 54.53]]]]}, "2011-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[65.97, 54.53], [66.5, 54.75], [66.75, 54.65], [66.82, 54.68], [66.97, 55.03], [67.32, 55.18], [67.47, 55.53], [67.88, 55.7], [67.75, 56.0], [67.85, 56.25], [67.75, 56.5], [67.97, 57.03], [68.32, 57.18], [68.47, 57.53], [69.0, 57.75], [69.25, 57.65], [69.5, 57.75], [69.75, 57.65], [70.0, 57.75], [70.53, 57.53], [70.75, 57.0], [70.53, 56.47], [70.18, 56.32], [70.15, 56.25], [70.25, 56.0], [70.15, 55.75], [70.25, 55.5], [70.15, 55.25], [70.25, 55.0], [70.04, 54.5], [70.25, 54.0], [70.03, 53.47], [69.5, 53.25], [69.25, 53.35], [69.0, 53.25], [68.75, 53.35], [68.68, 53.32], [68.53, 52.97], [68.0, 52.75], [67.75, 52.85], [67.5, 52.75], [67.25, 52.85], [67.0, 52.75], [66.75, 52.85], [66.5, 52.75], [65.97, 52.97], [65.75, 53.5], [65.85, 53.75], [65.75, 54.0], [65.97, 54.53]]]]}, "2011-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.32, 54.68], [67.47, 55.03], [68.0, 55.25], [68.25, 55.15], [68.38, 55.2], [68.32, 55.32], [67.97, 55.47], [67.75, 56.0], [67.85, 56.25], [67.75, 56.5], [67.97, 57.03], [68.32, 57.18], [68.47, 57.53], [69.0, 57.75], [69.25, 57.65], [69.5, 57.75], [69.75, 57.65], [70.0, 57.75], [70.53, 57.53], [70.75, 57.0], [70.53, 56.47], [70.18, 56.32], [70.15, 56.25], [70.25, 56.0], [70.15, 55.75], [70.25, 55.5], [70.15, 55.25], [70.25, 55.0], [70.04, 54.5], [70.25, 54.0], [70.03, 53.47], [69.5, 53.25], [69.25, 53.35], [69.0, 53.25], [68.75, 53.35], [68.68, 53.32], [68.53, 52.97], [68.0, 52.75], [67.75, 52.85], [67.5, 52.75], [67.25, 52.85], [67.0, 52.75], [66.47, 52.97], [66.25, 53.5], [66.47, 54.03], [66.82, 54.18], [66.97, 54.53], [67.32, 54.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.713007561971892}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.706505407303583}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.509338930926447, 13.365538746807601, 13.789460605940121, 12.241013647569389, 13.672517596661805]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.195334986912655, 11.934323381846355, 12.677560541846276, 11.404152368829159, 12.78232342831592]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.160457668937974, -5.996883381084483, -5.220407363400072, -6.707992219507592, -5.077767150796588]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.616727152928206, -7.3290886107996585, -5.972920183248618, -7.713007561971892, -5.607645826853059]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3952886557092679, -1.637546047180908, -1.4683672563790435, -1.8401008461422774, -1.393173250395462]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.466153335845905, -1.99918207958036, -1.6299181248400445, -2.066501586154854, -1.501563917184981]}}