{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:34.648266", "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": "2012-Oct-11_to_2012-Oct-14_86.0_53.5"}, "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": 2012100000471}, "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": "October 11 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 14 2012"}, "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": 50137.14991011826}, "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": 53.5}, "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": 86.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "86.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 82.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 88.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.75}, "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": {"2012-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.75, 57.0], [82.97, 57.53], [83.5, 57.75], [84.03, 57.53], [84.18, 57.18], [84.53, 57.03], [84.68, 56.68], [84.75, 56.65], [85.0, 56.75], [85.53, 56.53], [85.75, 56.0], [85.65, 55.75], [85.75, 55.5], [85.65, 55.25], [85.68, 55.18], [86.03, 55.03], [86.25, 54.5], [86.13, 54.2], [86.25, 54.15], [86.5, 54.25], [86.75, 54.15], [87.0, 54.25], [87.5, 54.04], [88.0, 54.25], [88.53, 54.03], [88.75, 53.5], [88.53, 52.97], [88.0, 52.75], [87.5, 52.96], [87.0, 52.75], [86.75, 52.85], [86.5, 52.75], [86.25, 52.85], [86.0, 52.75], [85.47, 52.97], [85.3, 53.38], [85.0, 53.25], [84.75, 53.35], [84.5, 53.25], [83.97, 53.47], [83.75, 54.0], [83.96, 54.5], [83.82, 54.82], [83.47, 54.97], [83.32, 55.32], [83.25, 55.35], [83.0, 55.25], [82.47, 55.47], [82.25, 56.0], [82.47, 56.53], [82.82, 56.68], [82.85, 56.75], [82.75, 57.0]]]]}, "2012-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.75, 57.0], [82.97, 57.53], [83.5, 57.75], [84.03, 57.53], [84.18, 57.18], [84.53, 57.03], [84.68, 56.68], [84.75, 56.65], [85.0, 56.75], [85.53, 56.53], [85.75, 56.0], [85.65, 55.75], [85.75, 55.5], [85.65, 55.25], [85.68, 55.18], [86.03, 55.03], [86.25, 54.5], [86.13, 54.2], [86.25, 54.15], [86.5, 54.25], [86.75, 54.15], [87.0, 54.25], [87.5, 54.04], [88.0, 54.25], [88.53, 54.03], [88.75, 53.5], [88.53, 52.97], [88.18, 52.82], [88.03, 52.47], [87.5, 52.25], [87.25, 52.35], [87.0, 52.25], [86.5, 52.46], [86.0, 52.25], [85.75, 52.35], [85.5, 52.25], [85.25, 52.35], [85.0, 52.25], [84.47, 52.47], [84.32, 52.82], [83.97, 52.97], [83.75, 53.5], [83.85, 53.75], [83.75, 54.0], [83.96, 54.5], [83.82, 54.82], [83.47, 54.97], [83.32, 55.32], [83.25, 55.35], [83.0, 55.25], [82.47, 55.47], [82.25, 56.0], [82.47, 56.53], [82.82, 56.68], [82.85, 56.75], [82.75, 57.0]]]]}, "2012-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.75, 57.0], [82.97, 57.53], [83.5, 57.75], [84.03, 57.53], [84.18, 57.18], [84.53, 57.03], [84.68, 56.68], [84.75, 56.65], [85.0, 56.75], [85.53, 56.53], [85.75, 56.0], [85.65, 55.75], [85.75, 55.5], [85.65, 55.25], [85.68, 55.18], [86.03, 55.03], [86.25, 54.5], [86.13, 54.2], [86.25, 54.15], [86.5, 54.25], [86.75, 54.15], [87.0, 54.25], [87.5, 54.04], [88.0, 54.25], [88.53, 54.03], [88.75, 53.5], [88.53, 52.97], [88.18, 52.82], [88.03, 52.47], [87.5, 52.25], [87.25, 52.35], [87.0, 52.25], [86.5, 52.46], [86.0, 52.25], [85.75, 52.35], [85.5, 52.25], [85.25, 52.35], [85.0, 52.25], [84.47, 52.47], [84.32, 52.82], [83.97, 52.97], [83.75, 53.5], [83.85, 53.75], [83.75, 54.0], [83.96, 54.5], [83.82, 54.82], [83.47, 54.97], [83.32, 55.32], [83.25, 55.35], [83.0, 55.25], [82.47, 55.47], [82.25, 56.0], [82.47, 56.53], [82.82, 56.68], [82.85, 56.75], [82.75, 57.0]]]]}, "2012-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.75, 53.5], [83.97, 54.03], [84.5, 54.25], [84.75, 54.15], [85.0, 54.25], [85.25, 54.15], [85.5, 54.25], [85.75, 54.15], [86.0, 54.25], [86.5, 54.04], [87.0, 54.25], [87.53, 54.03], [87.68, 53.68], [88.03, 53.53], [88.25, 53.0], [88.03, 52.47], [87.5, 52.25], [87.25, 52.35], [87.0, 52.25], [86.5, 52.46], [86.0, 52.25], [85.75, 52.35], [85.5, 52.25], [85.25, 52.35], [85.0, 52.25], [84.47, 52.47], [84.32, 52.82], [83.97, 52.97], [83.75, 53.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.719264363154025}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.65836386709011}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-2.1239503405511755, -2.1101173226829815, -2.161361536632512, -1.4168203366483567]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.821057793776845, -3.1162595049048036, -3.1886729810272527, -1.736534593423471]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.343388674646468, -5.693676634364666, -5.827706425846401, -5.7152793390910235]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.807716755227659, -6.2038644837628, -6.719264363154025, -6.172231719478816]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2725552565472462, -1.3687866870998833, -1.3907476847203246, -1.3264284459568318]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3679359874319095, -1.4861344305041024, -1.5322335250775188, -1.4176221227210333]}}