{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:51.143468", "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-Nov-30_to_2012-Dec-02_62.5_58.5"}, "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": 2012110001186}, "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 30 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 02 2012"}, "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": 70098.2411694618}, "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": 58.5}, "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": 62.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "62.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 59.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 67.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.38, 60.2], [60.25, 60.5], [60.47, 61.03], [61.0, 61.25], 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59.0], [59.47, 59.53], [59.82, 59.68], [59.97, 60.03], [60.38, 60.2]]]]}, "2012-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.38, 60.2], [60.25, 60.5], [60.47, 61.03], [61.0, 61.25], [61.53, 61.03], [61.68, 60.68], [61.75, 60.65], [62.0, 60.75], [62.53, 60.53], [62.68, 60.18], [62.75, 60.15], [63.0, 60.25], [63.53, 60.03], [63.68, 59.68], [64.03, 59.53], [64.25, 59.0], [64.15, 58.75], [64.18, 58.68], [64.53, 58.53], [64.68, 58.18], [65.03, 58.03], [65.18, 57.68], [65.25, 57.65], [65.5, 57.75], [65.75, 57.65], [66.0, 57.75], [66.53, 57.53], [66.68, 57.18], [67.0, 57.04], [67.5, 57.25], [68.03, 57.03], [68.25, 56.5], [68.03, 55.97], [67.68, 55.82], [67.53, 55.47], [67.0, 55.25], [66.75, 55.35], [66.5, 55.25], [66.25, 55.35], [66.0, 55.25], [65.47, 55.47], [65.32, 55.82], [65.25, 55.85], [65.0, 55.75], [64.47, 55.97], [64.32, 56.32], [64.25, 56.35], [64.0, 56.25], [63.47, 56.47], [63.25, 57.0], [63.35, 57.25], [63.32, 57.32], [63.25, 57.35], [63.0, 57.25], 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maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-28.10629219878379, -30.511176599641857, -26.892335788456563]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-11.503956531752493, -12.293648581485286, -12.486400230599045]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-12.998417778316053, -15.411993309968892, -13.82852102459023]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5133023891100723, -1.6036779234749425, -1.5992737915553246]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.681201921528833, -1.8262333920404785, 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