{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:54.201660", "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": "2022-May-08_to_2022-May-12_50.5_48.0"}, "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": 2022050000359}, "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 08 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 12 2022"}, "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": 229510.05618396096}, "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": ["E.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": []}, "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": 48.0}, "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": 50.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "50.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 45.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 53.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.47, 48.53], [49.0, 48.75], [49.25, 48.65], [49.32, 48.68], [49.47, 49.03], [50.0, 49.25], [50.25, 49.15], [50.32, 49.18], [50.47, 49.53], [51.0, 49.75], [51.53, 49.53], [51.75, 49.0], [51.65, 48.75], [51.75, 48.5], [51.65, 48.25], [51.75, 48.0], [51.53, 47.47], [51.18, 47.32], [51.03, 46.97], [50.5, 46.75], [50.25, 46.85], [50.0, 46.75], [49.75, 46.85], [49.5, 46.75], [49.25, 46.85], [49.0, 46.75], [48.47, 46.97], [48.25, 47.5], [48.35, 47.75], [48.25, 48.0], [48.47, 48.53]]]]}, "2022-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.47, 48.53], [49.0, 48.75], [49.25, 48.65], [49.32, 48.68], [49.47, 49.03], [50.0, 49.25], [50.25, 49.15], [50.32, 49.18], [50.47, 49.53], [51.0, 49.75], [51.25, 49.65], [51.5, 49.75], [52.03, 49.53], [52.18, 49.18], [52.25, 49.15], [52.5, 49.25], [53.03, 49.03], [53.18, 48.68], [53.25, 48.65], [53.5, 48.75], [54.03, 48.53], [54.25, 48.0], [54.15, 47.75], [54.25, 47.5], [54.03, 46.97], [53.5, 46.75], [53.25, 46.85], [53.0, 46.75], [52.75, 46.85], [52.5, 46.75], [52.25, 46.85], [52.0, 46.75], [51.75, 46.85], [51.5, 46.75], [51.25, 46.85], [51.0, 46.75], [50.75, 46.85], [50.5, 46.75], [50.25, 46.85], [50.0, 46.75], [49.75, 46.85], [49.5, 46.75], [49.25, 46.85], [49.0, 46.75], [48.47, 46.97], [48.25, 47.5], [48.35, 47.75], [48.25, 48.0], [48.47, 48.53]]]]}, "2022-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.35, 53.25], [45.25, 53.5], [45.47, 54.03], [46.0, 54.25], [46.25, 54.15], [46.5, 54.25], [46.75, 54.15], [47.0, 54.25], [47.25, 54.15], [47.5, 54.25], [47.75, 54.15], [48.0, 54.25], [48.25, 54.15], [48.5, 54.25], [49.03, 54.03], [49.18, 53.68], [49.25, 53.65], [49.5, 53.75], [49.75, 53.65], [50.0, 53.75], [50.53, 53.53], [50.68, 53.18], [50.75, 53.15], [51.0, 53.25], [51.25, 53.15], [51.5, 53.25], [52.03, 53.03], [52.25, 52.5], [52.03, 51.97], [51.68, 51.82], [51.65, 51.75], [51.68, 51.68], [52.03, 51.53], [52.18, 51.18], [52.53, 51.03], [52.68, 50.68], [53.03, 50.53], [53.25, 50.0], [53.15, 49.75], [53.25, 49.5], [53.04, 49.0], [53.18, 48.68], [53.25, 48.65], [53.5, 48.75], [54.03, 48.53], [54.25, 48.0], [54.15, 47.75], [54.25, 47.5], [54.03, 46.97], [53.5, 46.75], [53.25, 46.85], [53.0, 46.75], [52.75, 46.85], [52.5, 46.75], [52.25, 46.85], [52.0, 46.75], [51.75, 46.85], [51.5, 46.75], [51.25, 46.85], [51.0, 46.75], [50.75, 46.85], [50.5, 46.75], [50.25, 46.85], [50.0, 46.75], [49.75, 46.85], [49.5, 46.75], [49.25, 46.85], [49.0, 46.75], [48.47, 46.97], [48.25, 47.5], [48.35, 47.75], [48.25, 48.0], [48.47, 48.53], [49.0, 48.75], [48.47, 48.97], [48.32, 49.32], [48.25, 49.35], [48.0, 49.25], [47.75, 49.35], [47.5, 49.25], [47.25, 49.35], [47.0, 49.25], [46.47, 49.47], [46.32, 49.82], [45.97, 49.97], [45.75, 50.5], [45.85, 50.75], [45.75, 51.0], [45.96, 51.5], [45.82, 51.82], [45.47, 51.97], [45.25, 52.5], [45.35, 52.75], [45.25, 53.0], [45.35, 53.25]], [[49.25, 48.65], [49.32, 48.68], [49.38, 48.8], [49.25, 48.85], [49.0, 48.75], [49.25, 48.65]]]]}, "2022-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.35, 53.25], [45.25, 53.5], [45.47, 54.03], [46.0, 54.25], [46.25, 54.15], [46.5, 54.25], [46.75, 54.15], [47.0, 54.25], [47.25, 54.15], [47.5, 54.25], [47.75, 54.15], [48.0, 54.25], [48.25, 54.15], [48.5, 54.25], [49.03, 54.03], [49.18, 53.68], [49.25, 53.65], [49.5, 53.75], [49.75, 53.65], [50.0, 53.75], [50.53, 53.53], [50.68, 53.18], [50.75, 53.15], [51.0, 53.25], [51.25, 53.15], [51.5, 53.25], [52.03, 53.03], [52.25, 52.5], [52.03, 51.97], [51.68, 51.82], [51.65, 51.75], [51.68, 51.68], [52.03, 51.53], [52.18, 51.18], [52.53, 51.03], [52.68, 50.68], [53.03, 50.53], [53.25, 50.0], [53.15, 49.75], [53.25, 49.5], [53.04, 49.0], [53.18, 48.68], [53.25, 48.65], [53.5, 48.75], [54.03, 48.53], [54.25, 48.0], [54.15, 47.75], [54.25, 47.5], [54.03, 46.97], [53.5, 46.75], [53.25, 46.85], [53.0, 46.75], [52.75, 46.85], [52.5, 46.75], [52.25, 46.85], [52.0, 46.75], [51.75, 46.85], [51.5, 46.75], [51.25, 46.85], [51.0, 46.75], [50.75, 46.85], [50.5, 46.75], [49.97, 46.97], [49.8, 47.38], [49.68, 47.32], [49.53, 46.97], [49.0, 46.75], [48.47, 46.97], [48.25, 47.5], [48.35, 47.75], [48.25, 48.0], [48.47, 48.53], [49.0, 48.75], [48.47, 48.97], [48.32, 49.32], [48.25, 49.35], [48.0, 49.25], [47.75, 49.35], [47.5, 49.25], [47.25, 49.35], [47.0, 49.25], [46.47, 49.47], [46.32, 49.82], [45.97, 49.97], [45.75, 50.5], [45.85, 50.75], [45.75, 51.0], [45.96, 51.5], [45.82, 51.82], [45.47, 51.97], [45.25, 52.5], [45.35, 52.75], [45.25, 53.0], [45.35, 53.25]], [[49.25, 48.65], [49.32, 48.68], [49.38, 48.8], [49.25, 48.85], [49.0, 48.75], [49.25, 48.65]]]]}, "2022-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.35, 53.25], [45.25, 53.5], [45.47, 54.03], [46.0, 54.25], [46.25, 54.15], [46.5, 54.25], [46.75, 54.15], [47.0, 54.25], [47.25, 54.15], [47.5, 54.25], [47.75, 54.15], [48.0, 54.25], [48.25, 54.15], [48.5, 54.25], [49.03, 54.03], [49.18, 53.68], [49.25, 53.65], [49.5, 53.75], [49.75, 53.65], [50.0, 53.75], [50.53, 53.53], [50.68, 53.18], [50.75, 53.15], [51.0, 53.25], [51.25, 53.15], [51.5, 53.25], [52.03, 53.03], [52.25, 52.5], [52.03, 51.97], [51.68, 51.82], [51.65, 51.75], [51.68, 51.68], [52.03, 51.53], [52.18, 51.18], [52.53, 51.03], [52.68, 50.68], [53.03, 50.53], [53.25, 50.0], [53.15, 49.75], [53.25, 49.5], [53.03, 48.97], [52.5, 48.75], [52.25, 48.85], [52.0, 48.75], [51.75, 48.85], [51.5, 48.75], [51.25, 48.85], [51.0, 48.75], [50.75, 48.85], [50.5, 48.75], [50.25, 48.85], [50.0, 48.75], [49.75, 48.85], [49.5, 48.75], [49.25, 48.85], [49.0, 48.75], [48.47, 48.97], [48.32, 49.32], [48.25, 49.35], [48.0, 49.25], [47.75, 49.35], [47.5, 49.25], [47.25, 49.35], [47.0, 49.25], [46.47, 49.47], [46.32, 49.82], [45.97, 49.97], [45.75, 50.5], [45.85, 50.75], [45.75, 51.0], [45.96, 51.5], [45.82, 51.82], [45.47, 51.97], [45.25, 52.5], [45.35, 52.75], [45.25, 53.0], [45.35, 53.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.558933772953253}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.6869238282128425}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.218633338810776, 10.643860240645438, 8.81811646833711, 8.739338014330656, 8.995982843718593]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.857690947419826, 10.111534565825934, 4.061139789011406, 3.7267249208390467, 6.857837755723608]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.614994702789217, -6.572521879241356, -6.753050602799579, -6.96053801738596, -6.296019142924351]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.081216067457717, -7.536956566592721, -9.228603620797912, -9.558933772953253, -6.953655939184046]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6582070888532008, -1.589276557760907, -1.6113233448889517, -1.638486822498911, -1.466072635443588]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.814919910254089, -1.7237341155448516, -2.1059716976819502, -2.1706361803695104, -1.6071596197754652]}}