{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:22.064967", "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": "2014-May-06_to_2014-May-09_39.5_62.5"}, "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": 2014050000330}, "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": "May 06 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 09 2014"}, "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": 128391.12942435475}, "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": ["E.Europe", "N.Europe", "Russian-Arctic", "West&Central-Europe"]}, "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": ["White Sea"]}, "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": 62.5}, "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": 39.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 43.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 65.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.32, 62.18], [37.35, 62.25], [37.32, 62.32], [36.97, 62.47], [36.75, 63.0], [36.97, 63.53], [37.5, 63.75], [37.75, 63.65], [38.0, 63.75], [37.47, 63.97], [37.25, 64.5], [37.47, 65.03], [38.0, 65.25], [38.25, 65.15], [38.5, 65.25], [38.75, 65.15], [39.0, 65.25], [39.25, 65.15], [39.5, 65.25], [39.75, 65.15], [40.0, 65.25], [40.25, 65.15], [40.32, 65.18], [40.47, 65.53], [41.0, 65.75], [41.25, 65.65], [41.5, 65.75], [41.75, 65.65], [41.82, 65.68], [41.97, 66.03], [42.5, 66.25], [43.03, 66.03], [43.18, 65.68], [43.53, 65.53], [43.75, 65.0], [43.53, 64.47], [43.18, 64.32], [43.04, 64.0], [43.18, 63.68], [43.53, 63.53], [43.75, 63.0], [43.53, 62.47], [43.18, 62.32], [43.03, 61.97], [42.5, 61.75], [42.25, 61.85], [42.18, 61.82], [42.15, 61.75], [42.18, 61.68], [42.53, 61.53], [42.75, 61.0], [42.53, 60.47], [42.18, 60.32], [42.03, 59.97], [41.68, 59.82], [41.53, 59.47], [41.0, 59.25], [40.75, 59.35], [40.5, 59.25], [40.25, 59.35], [40.0, 59.25], [39.47, 59.47], [39.32, 59.82], [39.25, 59.85], [39.18, 59.82], [39.03, 59.47], [38.5, 59.25], [37.97, 59.47], [37.82, 59.82], [37.47, 59.97], [37.32, 60.32], [37.25, 60.35], [37.0, 60.25], [36.47, 60.47], [36.25, 61.0], [36.47, 61.53], [36.82, 61.68], [36.97, 62.03], [37.32, 62.18]], [[38.25, 63.65], [38.38, 63.7], [38.32, 63.82], [38.25, 63.85], [38.0, 63.75], [38.25, 63.65]]]]}, "2014-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.32, 62.18], [37.35, 62.25], [37.32, 62.32], [36.97, 62.47], [36.75, 63.0], [36.97, 63.53], [37.5, 63.75], [37.75, 63.65], [38.0, 63.75], [37.47, 63.97], [37.25, 64.5], [37.47, 65.03], [38.0, 65.25], [38.25, 65.15], [38.5, 65.25], [38.75, 65.15], [39.0, 65.25], [39.25, 65.15], [39.5, 65.25], [39.75, 65.15], [40.0, 65.25], [40.25, 65.15], [40.32, 65.18], [40.47, 65.53], [41.0, 65.75], [41.25, 65.65], [41.5, 65.75], [41.75, 65.65], [41.82, 65.68], [41.97, 66.03], [42.5, 66.25], [43.03, 66.03], [43.18, 65.68], [43.53, 65.53], [43.75, 65.0], [43.53, 64.47], [43.18, 64.32], [43.15, 64.25], [43.25, 64.0], [43.15, 63.75], [43.18, 63.68], [43.53, 63.53], [43.75, 63.0], [43.53, 62.47], [43.18, 62.32], [43.03, 61.97], [42.5, 61.75], [42.25, 61.85], [42.18, 61.82], [42.15, 61.75], [42.18, 61.68], [42.53, 61.53], [42.75, 61.0], [42.53, 60.47], [42.18, 60.32], [42.03, 59.97], [41.68, 59.82], [41.53, 59.47], [41.0, 59.25], [40.75, 59.35], [40.5, 59.25], [40.25, 59.35], [40.0, 59.25], [39.47, 59.47], [39.32, 59.82], [39.25, 59.85], [39.18, 59.82], [39.03, 59.47], [38.5, 59.25], [37.97, 59.47], [37.82, 59.82], [37.47, 59.97], [37.32, 60.32], [37.25, 60.35], [37.0, 60.25], [36.47, 60.47], [36.25, 61.0], [36.47, 61.53], [36.82, 61.68], [36.97, 62.03], [37.32, 62.18]], [[38.25, 63.65], [38.38, 63.7], [38.32, 63.82], [38.25, 63.85], [38.0, 63.75], [38.25, 63.65]]]]}, "2014-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.32, 62.18], [37.35, 62.25], [37.32, 62.32], [36.97, 62.47], [36.75, 63.0], [36.97, 63.53], [37.5, 63.75], [37.75, 63.65], [38.0, 63.75], [37.47, 63.97], [37.25, 64.5], [37.47, 65.03], [38.0, 65.25], [38.25, 65.15], [38.5, 65.25], [38.75, 65.15], [39.0, 65.25], [39.25, 65.15], [39.5, 65.25], [39.75, 65.15], [40.0, 65.25], [40.25, 65.15], [40.32, 65.18], [40.47, 65.53], [41.0, 65.75], [41.25, 65.65], [41.5, 65.75], [41.75, 65.65], [41.82, 65.68], [41.97, 66.03], [42.5, 66.25], [43.03, 66.03], [43.18, 65.68], [43.53, 65.53], [43.75, 65.0], [43.53, 64.47], [43.18, 64.32], [43.15, 64.25], [43.25, 64.0], [43.15, 63.75], [43.18, 63.68], [43.53, 63.53], [43.75, 63.0], [43.53, 62.47], [43.18, 62.32], [43.03, 61.97], [42.5, 61.75], [42.25, 61.85], [42.18, 61.82], [42.15, 61.75], [42.18, 61.68], [42.53, 61.53], [42.75, 61.0], [42.53, 60.47], [42.18, 60.32], [42.03, 59.97], [41.68, 59.82], [41.53, 59.47], [41.0, 59.25], [40.75, 59.35], [40.5, 59.25], [40.25, 59.35], [40.0, 59.25], [39.47, 59.47], [39.32, 59.82], [39.25, 59.85], [39.18, 59.82], [39.03, 59.47], [38.5, 59.25], [37.97, 59.47], [37.82, 59.82], [37.47, 59.97], [37.32, 60.32], [37.25, 60.35], [37.0, 60.25], [36.47, 60.47], [36.25, 61.0], [36.47, 61.53], [36.82, 61.68], [36.97, 62.03], [37.32, 62.18]], [[38.25, 63.65], [38.38, 63.7], [38.32, 63.82], [38.25, 63.85], [38.0, 63.75], [38.25, 63.65]]]]}, "2014-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.0, 63.75], [40.25, 63.65], [40.32, 63.68], [40.47, 64.03], [40.82, 64.18], [40.97, 64.53], [41.5, 64.75], [41.75, 64.65], [42.0, 64.75], [42.25, 64.65], [42.5, 64.75], [43.03, 64.53], [43.25, 64.0], [43.04, 63.5], [43.25, 63.0], [43.03, 62.47], [42.5, 62.25], [42.25, 62.35], [42.18, 62.32], [42.03, 61.97], [41.5, 61.75], [40.97, 61.97], [40.82, 62.32], [40.75, 62.35], [40.68, 62.32], [40.53, 61.97], [40.0, 61.75], [39.75, 61.85], [39.5, 61.75], [38.97, 61.97], [38.75, 62.5], [38.97, 63.03], [39.32, 63.18], [39.47, 63.53], [40.0, 63.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.376802753356117}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.731924200184257}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.3853927503103023, -1.6326572986163228, 0.5698250717253472, 0.7838993110431147]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.146562077720489, -3.284584395300726, -1.4795462234350794, 0.4417245703829167]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.329991827482932, -8.951328825109123, -7.044681667625658, -6.923750390681232]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.216480008394115, -10.376802753356117, -8.371008176038004, -7.352385485313505]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.682296299627584, -2.023641996916607, -1.5515614043485966, -1.4760646611797956]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.086974551480512, -2.225987440732864, -1.7857430318872531, -1.5542406933026727]}}