{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:18.410045", "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": "2021-Sep-29_to_2021-Oct-03_56.5_44.0"}, "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": 2021090000872}, "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": "September 29 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 2021"}, "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": 441292.8716978454}, "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", "Turkmenistan", "Uzbekistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe", "W.C.Asia", "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": 44.0}, "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": 56.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "56.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 51.75}, "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": 40.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.47, 45.03], [52.0, 45.25], [52.25, 45.15], [52.5, 45.25], [53.0, 45.04], [53.5, 45.25], [53.75, 45.15], [53.82, 45.18], [53.97, 45.53], [54.32, 45.68], [54.47, 46.03], [55.0, 46.25], [55.25, 46.15], [55.38, 46.2], [55.25, 46.5], [55.35, 46.75], [55.25, 47.0], [55.35, 47.25], [55.25, 47.5], [55.47, 48.03], [56.0, 48.25], [56.25, 48.15], [56.5, 48.25], [57.0, 48.04], [57.32, 48.18], [57.47, 48.53], [58.0, 48.75], [58.53, 48.53], [58.75, 48.0], [58.65, 47.75], [58.7, 47.63], [59.0, 47.75], [59.25, 47.65], [59.5, 47.75], [59.75, 47.65], [60.0, 47.75], [60.25, 47.65], [60.5, 47.75], [60.75, 47.65], [61.0, 47.75], [61.25, 47.65], [61.5, 47.75], [61.75, 47.65], [62.0, 47.75], [62.5, 47.54], [63.0, 47.75], [63.25, 47.65], [63.5, 47.75], [63.75, 47.65], [64.0, 47.75], [64.53, 47.53], [64.75, 47.0], [64.53, 46.47], [64.0, 46.25], [63.75, 46.35], [63.5, 46.25], [63.25, 46.35], [63.18, 46.32], [63.03, 45.97], [62.5, 45.75], [62.25, 45.85], [62.18, 45.82], [62.15, 45.75], [62.25, 45.5], [62.03, 44.97], [61.5, 44.75], [61.25, 44.85], [61.0, 44.75], [60.47, 44.97], [60.32, 45.32], [60.0, 45.46], [59.68, 45.32], [59.65, 45.25], [59.75, 45.0], [59.54, 44.5], [59.75, 44.0], [59.53, 43.47], [59.0, 43.25], [58.75, 43.35], [58.68, 43.32], [58.53, 42.97], [58.0, 42.75], [57.75, 42.85], [57.5, 42.75], [57.25, 42.85], [57.0, 42.75], [56.75, 42.85], [56.5, 42.75], [56.25, 42.85], [56.0, 42.75], [55.75, 42.85], [55.5, 42.75], [55.25, 42.85], [55.0, 42.75], [54.75, 42.85], [54.5, 42.75], [54.25, 42.85], [54.0, 42.75], [53.47, 42.97], [53.32, 43.32], [53.25, 43.35], [53.0, 43.25], [52.75, 43.35], [52.5, 43.25], [52.25, 43.35], [52.0, 43.25], [51.47, 43.47], [51.25, 44.0], [51.35, 44.25], [51.25, 44.5], [51.47, 45.03]]]]}, "2021-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.47, 45.03], [52.0, 45.25], [52.25, 45.15], [52.5, 45.25], [53.0, 45.04], [53.5, 45.25], [53.75, 45.15], [53.82, 45.18], [53.97, 45.53], [54.32, 45.68], [54.47, 46.03], [55.0, 46.25], [55.25, 46.15], [55.38, 46.2], [55.25, 46.5], [55.35, 46.75], [55.25, 47.0], [55.35, 47.25], [55.25, 47.5], [55.47, 48.03], [56.0, 48.25], [56.25, 48.15], [56.5, 48.25], [57.0, 48.04], [57.32, 48.18], [57.47, 48.53], [58.0, 48.75], [58.53, 48.53], [58.75, 48.0], [58.65, 47.75], [58.7, 47.63], [59.0, 47.75], [59.25, 47.65], [59.5, 47.75], [59.75, 47.65], [60.0, 47.75], [60.25, 47.65], [60.5, 47.75], [60.75, 47.65], [61.0, 47.75], [61.25, 47.65], [61.5, 47.75], [61.75, 47.65], [62.0, 47.75], [62.5, 47.54], [63.0, 47.75], [63.25, 47.65], [63.5, 47.75], [63.75, 47.65], [64.0, 47.75], [64.53, 47.53], [64.75, 47.0], [64.53, 46.47], [64.0, 46.25], [63.75, 46.35], [63.5, 46.25], [63.25, 46.35], [63.18, 46.32], [63.03, 45.97], [62.5, 45.75], [62.25, 45.85], [62.18, 45.82], [62.15, 45.75], [62.25, 45.5], [62.15, 45.25], [62.25, 45.0], [62.03, 44.47], [61.5, 44.25], [61.75, 44.15], [62.0, 44.25], [62.25, 44.15], [62.32, 44.18], [62.47, 44.53], [63.0, 44.75], [63.25, 44.65], [63.5, 44.75], [64.03, 44.53], [64.18, 44.18], [64.25, 44.15], [64.5, 44.25], [64.75, 44.15], [65.0, 44.25], [65.25, 44.15], [65.5, 44.25], [65.75, 44.15], [66.0, 44.25], [66.25, 44.15], [66.32, 44.18], [66.47, 44.53], [67.0, 44.75], [67.25, 44.65], [67.32, 44.68], [67.35, 44.75], [67.25, 45.0], [67.47, 45.53], [68.0, 45.75], [68.53, 45.53], [68.68, 45.18], [68.75, 45.15], [68.82, 45.18], [68.97, 45.53], [69.5, 45.75], [69.75, 45.65], [70.0, 45.75], [70.53, 45.53], [70.75, 45.0], [70.65, 44.75], [70.75, 44.5], [70.53, 43.97], [70.0, 43.75], [69.75, 43.85], [69.5, 43.75], [69.25, 43.85], [69.0, 43.75], [68.75, 43.85], [68.68, 43.82], [68.65, 43.75], [68.75, 43.5], [68.53, 42.97], [68.0, 42.75], [67.75, 42.85], [67.68, 42.82], [67.53, 42.47], [67.0, 42.25], [66.75, 42.35], [66.5, 42.25], [66.25, 42.35], [66.0, 42.25], [65.75, 42.35], [65.68, 42.32], [65.53, 41.97], [65.0, 41.75], [64.75, 41.85], [64.5, 41.75], [64.25, 41.85], [64.0, 41.75], [63.75, 41.85], [63.5, 41.75], [63.25, 41.85], [63.0, 41.75], [62.75, 41.85], [62.68, 41.82], [62.53, 41.47], [62.18, 41.32], [62.03, 40.97], [61.5, 40.75], [61.25, 40.85], [61.0, 40.75], [60.75, 40.85], [60.68, 40.82], [60.53, 40.47], [60.0, 40.25], [59.75, 40.35], [59.5, 40.25], [59.25, 40.35], [59.0, 40.25], [58.75, 40.35], [58.5, 40.25], [57.97, 40.47], [57.82, 40.82], [57.5, 40.96], [57.0, 40.75], [56.75, 40.85], [56.5, 40.75], [55.97, 40.97], [55.82, 41.32], [55.75, 41.35], [55.5, 41.25], [54.97, 41.47], [54.75, 42.0], [54.85, 42.25], [54.75, 42.5], [54.85, 42.75], [54.82, 42.82], [54.75, 42.85], [54.5, 42.75], [54.25, 42.85], [54.0, 42.75], [53.47, 42.97], [53.32, 43.32], [53.25, 43.35], [53.0, 43.25], [52.75, 43.35], [52.5, 43.25], [52.25, 43.35], [52.0, 43.25], [51.47, 43.47], [51.25, 44.0], [51.35, 44.25], [51.25, 44.5], [51.47, 45.03]], [[60.97, 44.47], [60.82, 44.82], [60.47, 44.97], [60.32, 45.32], [60.0, 45.46], [59.68, 45.32], [59.65, 45.25], [59.75, 45.0], [59.54, 44.5], [59.7, 44.13], [60.0, 44.25], [60.5, 44.04], [61.0, 44.25], [61.25, 44.15], [61.5, 44.25], [60.97, 44.47]]]]}, "2021-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[51.47, 45.03], [52.0, 45.25], [52.25, 45.15], [52.5, 45.25], [53.0, 45.04], [53.5, 45.25], [53.75, 45.15], [53.82, 45.18], [53.97, 45.53], [54.32, 45.68], [54.47, 46.03], [55.0, 46.25], [55.25, 46.15], [55.38, 46.2], [55.25, 46.5], [55.35, 46.75], [55.25, 47.0], [55.35, 47.25], [55.25, 47.5], [55.47, 48.03], [56.0, 48.25], [56.25, 48.15], [56.5, 48.25], [57.0, 48.04], [57.32, 48.18], [57.47, 48.53], [58.0, 48.75], [58.53, 48.53], [58.75, 48.0], [58.65, 47.75], [58.7, 47.63], [59.0, 47.75], [59.25, 47.65], [59.5, 47.75], [59.75, 47.65], [60.0, 47.75], [60.25, 47.65], [60.5, 47.75], [60.75, 47.65], [61.0, 47.75], [61.25, 47.65], [61.5, 47.75], [61.75, 47.65], [62.0, 47.75], [62.5, 47.54], [63.0, 47.75], [63.25, 47.65], [63.5, 47.75], [63.75, 47.65], [64.0, 47.75], [64.53, 47.53], [64.75, 47.0], [64.53, 46.47], [64.0, 46.25], [63.75, 46.35], [63.5, 46.25], [63.25, 46.35], [63.18, 46.32], [63.03, 45.97], [62.5, 45.75], [62.25, 45.85], [62.18, 45.82], [62.15, 45.75], [62.25, 45.5], [62.15, 45.25], [62.25, 45.0], [62.03, 44.47], [61.5, 44.25], [61.75, 44.15], [62.0, 44.25], [62.25, 44.15], [62.32, 44.18], [62.47, 44.53], [63.0, 44.75], [63.25, 44.65], [63.5, 44.75], [64.03, 44.53], [64.18, 44.18], [64.25, 44.15], [64.5, 44.25], [64.75, 44.15], [65.0, 44.25], [65.25, 44.15], [65.5, 44.25], [65.75, 44.15], [66.0, 44.25], [66.25, 44.15], [66.32, 44.18], [66.47, 44.53], [67.0, 44.75], [67.25, 44.65], [67.32, 44.68], [67.35, 44.75], [67.25, 45.0], [67.47, 45.53], [68.0, 45.75], [68.53, 45.53], [68.68, 45.18], [68.75, 45.15], [68.82, 45.18], [68.97, 45.53], [69.5, 45.75], [69.75, 45.65], [70.0, 45.75], [70.53, 45.53], [70.75, 45.0], [70.65, 44.75], [70.75, 44.5], [70.65, 44.25], [70.75, 44.0], [70.53, 43.47], [70.0, 43.25], [69.47, 43.47], [69.32, 43.82], [69.25, 43.85], [69.0, 43.75], [68.75, 43.85], [68.68, 43.82], [68.65, 43.75], [68.75, 43.5], [68.53, 42.97], [68.0, 42.75], [67.75, 42.85], [67.68, 42.82], [67.53, 42.47], [67.0, 42.25], [66.75, 42.35], [66.5, 42.25], [66.25, 42.35], [66.0, 42.25], [65.75, 42.35], [65.68, 42.32], [65.53, 41.97], [65.0, 41.75], [64.75, 41.85], [64.5, 41.75], [64.25, 41.85], [64.0, 41.75], [63.75, 41.85], [63.5, 41.75], [63.25, 41.85], [63.0, 41.75], [62.75, 41.85], [62.68, 41.82], [62.53, 41.47], [62.18, 41.32], [62.03, 40.97], [61.5, 40.75], [61.25, 40.85], [61.0, 40.75], [60.75, 40.85], [60.68, 40.82], [60.53, 40.47], [60.0, 40.25], [59.75, 40.35], [59.5, 40.25], [59.25, 40.35], [59.0, 40.25], [58.75, 40.35], [58.5, 40.25], [57.97, 40.47], [57.82, 40.82], [57.5, 40.96], [57.0, 40.75], [56.75, 40.85], [56.5, 40.75], [55.97, 40.97], [55.82, 41.32], [55.75, 41.35], [55.5, 41.25], [54.97, 41.47], [54.75, 42.0], [54.85, 42.25], [54.75, 42.5], [54.85, 42.75], [54.82, 42.82], [54.75, 42.85], [54.5, 42.75], [54.25, 42.85], [54.0, 42.75], [53.47, 42.97], [53.32, 43.32], [53.25, 43.35], [53.0, 43.25], [52.75, 43.35], [52.5, 43.25], [52.25, 43.35], [52.0, 43.25], [51.47, 43.47], [51.25, 44.0], [51.35, 44.25], [51.25, 44.5], [51.47, 45.03]], [[60.97, 44.47], [60.82, 44.82], [60.47, 44.97], [60.32, 45.32], [60.0, 45.46], [59.68, 45.32], [59.65, 45.25], [59.75, 45.0], [59.54, 44.5], [59.7, 44.13], [60.0, 44.25], [60.5, 44.04], [61.0, 44.25], [61.25, 44.15], [61.5, 44.25], [60.97, 44.47]]]]}, "2021-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[54.5, 45.25], [54.75, 45.15], [54.82, 45.18], [54.97, 45.53], [55.5, 45.75], [55.75, 45.65], [55.88, 45.7], [55.82, 45.82], [55.47, 45.97], [55.25, 46.5], [55.35, 46.75], [55.25, 47.0], [55.35, 47.25], [55.25, 47.5], [55.47, 48.03], [56.0, 48.25], [56.25, 48.15], [56.5, 48.25], [57.03, 48.03], [57.18, 47.68], [57.53, 47.53], [57.68, 47.18], [57.75, 47.15], [58.0, 47.25], [58.53, 47.03], [58.75, 46.5], [58.65, 46.25], [58.75, 46.0], [58.65, 45.75], [58.75, 45.5], [58.65, 45.25], [58.75, 45.0], [58.53, 44.47], [58.18, 44.32], [58.15, 44.25], [58.25, 44.0], [58.13, 43.7], [58.25, 43.65], [58.5, 43.75], [58.75, 43.65], [59.0, 43.75], [59.25, 43.65], [59.32, 43.68], [59.47, 44.03], [60.0, 44.25], [60.5, 44.04], [61.0, 44.25], [61.25, 44.15], [61.5, 44.25], [61.75, 44.15], [62.0, 44.25], [62.25, 44.15], [62.32, 44.18], [62.47, 44.53], [63.0, 44.75], [63.25, 44.65], [63.5, 44.75], [64.03, 44.53], [64.18, 44.18], [64.25, 44.15], [64.5, 44.25], [64.75, 44.15], [65.0, 44.25], [65.25, 44.15], [65.5, 44.25], [65.75, 44.15], [66.0, 44.25], [66.25, 44.15], [66.32, 44.18], [66.47, 44.53], [67.0, 44.75], [67.25, 44.65], [67.32, 44.68], [67.35, 44.75], [67.25, 45.0], [67.47, 45.53], [68.0, 45.75], [68.53, 45.53], [68.68, 45.18], [68.75, 45.15], [68.82, 45.18], [68.97, 45.53], [69.5, 45.75], [69.75, 45.65], [70.0, 45.75], [70.53, 45.53], [70.75, 45.0], [70.65, 44.75], [70.75, 44.5], [70.65, 44.25], [70.75, 44.0], [70.53, 43.47], [70.0, 43.25], [69.47, 43.47], [69.32, 43.82], [69.25, 43.85], [69.0, 43.75], [68.75, 43.85], [68.68, 43.82], [68.65, 43.75], [68.75, 43.5], [68.53, 42.97], [68.0, 42.75], [67.75, 42.85], [67.68, 42.82], [67.53, 42.47], [67.0, 42.25], [66.75, 42.35], [66.5, 42.25], [66.25, 42.35], [66.0, 42.25], [65.75, 42.35], [65.68, 42.32], [65.53, 41.97], [65.0, 41.75], [64.75, 41.85], [64.5, 41.75], [64.25, 41.85], [64.0, 41.75], [63.75, 41.85], [63.5, 41.75], [63.25, 41.85], [63.0, 41.75], [62.75, 41.85], [62.68, 41.82], [62.53, 41.47], [62.18, 41.32], [62.03, 40.97], [61.5, 40.75], [61.25, 40.85], [61.0, 40.75], [60.75, 40.85], [60.68, 40.82], [60.53, 40.47], [60.0, 40.25], [59.75, 40.35], [59.5, 40.25], [59.25, 40.35], [59.0, 40.25], [58.75, 40.35], [58.5, 40.25], [57.97, 40.47], [57.82, 40.82], [57.5, 40.96], [57.0, 40.75], [56.75, 40.85], [56.5, 40.75], [55.97, 40.97], [55.82, 41.32], [55.75, 41.35], [55.5, 41.25], [54.97, 41.47], [54.75, 42.0], [54.85, 42.25], [54.75, 42.5], [54.85, 42.75], [54.82, 42.82], [54.47, 42.97], [54.32, 43.32], [53.97, 43.47], [53.75, 44.0], [53.85, 44.25], [53.75, 44.5], [53.97, 45.03], [54.5, 45.25]]], [[[60.47, 44.97], [60.25, 45.5], [60.47, 46.03], [61.0, 46.25], [61.53, 46.03], [61.68, 45.68], [62.03, 45.53], [62.25, 45.0], [62.03, 44.47], [61.5, 44.25], [60.97, 44.47], [60.82, 44.82], [60.47, 44.97]]]]}, "2021-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[62.53, 43.53], [62.75, 43.0], [62.53, 42.47], [62.18, 42.32], [62.03, 41.97], [61.5, 41.75], [60.97, 41.97], [60.75, 42.5], [60.97, 43.03], [61.32, 43.18], [61.47, 43.53], [62.0, 43.75], [62.53, 43.53]]], [[[67.25, 43.5], [67.47, 44.03], [68.0, 44.25], [68.53, 44.03], [68.75, 43.5], [68.53, 42.97], [68.0, 42.75], [67.47, 42.97], [67.25, 43.5]]], [[[69.25, 44.0], [69.47, 44.53], [70.0, 44.75], [70.53, 44.53], [70.75, 44.0], [70.53, 43.47], [70.0, 43.25], [69.47, 43.47], [69.25, 44.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.110826805971271}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.820286280229286}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.406954709063314, 8.173209668355923, 7.8650704461283, 8.672942013766828, 9.029057217054628]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.2557781772927115, 4.827851454343659, 4.8734851549307905, 5.134539815836831, 8.626192993236543]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.170435230866705, -7.1144260892615945, -7.133212115710534, -6.426924883137567, -6.445427438599566]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.274406668579331, -9.110826805971271, -8.572060186980025, -7.597260956347554, -6.646031204322185]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6636397355541057, -1.8823419822177812, -1.8531745715650771, -1.6276797027116905, -1.5422287873202913]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.91651829451193, -2.4005059461010045, -2.209792103588068, -1.7961694575420384, -1.5604190099083177]}}