{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:07.365019", "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": "2015-Jan-23_to_2015-Jan-28_50.5_45.5"}, "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": 2015010001113}, "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": "January 23 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 28 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 142149.08650868136}, "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", "Uzbekistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe", "W.C.Asia"]}, "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": 45.5}, "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": 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": 48.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 60.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.0, 46.75], [49.25, 46.65], [49.5, 46.75], [49.75, 46.65], [49.82, 46.68], [49.97, 47.03], [50.32, 47.18], [50.47, 47.53], [51.0, 47.75], [51.53, 47.53], [51.68, 47.18], [51.75, 47.15], [52.0, 47.25], [52.25, 47.15], [52.5, 47.25], [53.03, 47.03], [53.18, 46.68], [53.53, 46.53], [53.75, 46.0], [53.65, 45.75], [53.75, 45.5], [53.53, 44.97], [53.0, 44.75], [52.75, 44.85], [52.5, 44.75], [52.25, 44.85], [52.0, 44.75], [51.75, 44.85], [51.68, 44.82], [51.53, 44.47], [51.0, 44.25], [50.75, 44.35], [50.5, 44.25], [50.25, 44.35], [50.0, 44.25], [49.75, 44.35], [49.5, 44.25], [48.97, 44.47], [48.82, 44.82], [48.75, 44.85], [48.5, 44.75], [47.97, 44.97], [47.75, 45.5], [47.97, 46.03], [48.32, 46.18], [48.47, 46.53], [49.0, 46.75]]]]}, "2015-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[60.53, 45.53], [60.68, 45.18], [61.03, 45.03], [61.25, 44.5], [61.03, 43.97], [60.5, 43.75], [60.25, 43.85], [60.0, 43.75], [59.75, 43.85], [59.5, 43.75], [58.97, 43.97], [58.75, 44.5], [58.97, 45.03], [59.32, 45.18], [59.47, 45.53], [60.0, 45.75], [60.53, 45.53]]], [[[49.25, 46.65], [49.5, 46.75], [49.75, 46.65], [49.82, 46.68], [49.97, 47.03], [50.32, 47.18], [50.47, 47.53], [51.0, 47.75], [51.53, 47.53], [51.68, 47.18], [51.75, 47.15], [52.0, 47.25], [52.25, 47.15], [52.5, 47.25], [53.03, 47.03], [53.18, 46.68], [53.53, 46.53], [53.7, 46.13], [54.0, 46.25], [54.53, 46.03], [54.75, 45.5], [54.53, 44.97], [54.0, 44.75], [53.57, 44.93], [53.75, 44.5], [53.53, 43.97], [53.0, 43.75], [52.47, 43.97], [52.25, 44.5], [52.38, 44.8], [52.25, 44.85], [52.0, 44.75], [51.75, 44.85], [51.68, 44.82], [51.53, 44.47], [51.0, 44.25], [50.75, 44.35], [50.5, 44.25], [50.25, 44.35], [50.0, 44.25], [49.75, 44.35], [49.5, 44.25], [48.97, 44.47], [48.82, 44.82], [48.75, 44.85], [48.5, 44.75], [47.97, 44.97], [47.75, 45.5], [47.97, 46.03], [48.32, 46.18], [48.47, 46.53], [49.0, 46.75], [49.25, 46.65]]]]}, "2015-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.0, 46.75], [49.25, 46.65], [49.5, 46.75], [49.75, 46.65], [49.82, 46.68], [49.97, 47.03], [50.32, 47.18], [50.47, 47.53], [51.0, 47.75], [51.53, 47.53], [51.68, 47.18], [51.75, 47.15], [52.0, 47.25], [52.25, 47.15], [52.5, 47.25], [53.03, 47.03], [53.18, 46.68], [53.53, 46.53], [53.7, 46.13], [54.0, 46.25], [54.53, 46.03], [54.75, 45.5], [54.65, 45.25], [54.68, 45.18], [55.03, 45.03], [55.18, 44.68], [55.25, 44.65], [55.5, 44.75], [55.75, 44.65], [56.0, 44.75], [56.25, 44.65], [56.5, 44.75], [56.75, 44.65], [56.82, 44.68], [56.97, 45.03], [57.5, 45.25], [57.75, 45.15], [58.0, 45.25], [58.25, 45.15], [58.5, 45.25], [58.75, 45.15], [58.82, 45.18], [58.97, 45.53], [59.5, 45.75], [59.75, 45.65], [60.0, 45.75], [60.53, 45.53], [60.68, 45.18], [61.03, 45.03], [61.25, 44.5], [61.03, 43.97], [60.5, 43.75], [60.25, 43.85], [60.0, 43.75], [59.75, 43.85], [59.68, 43.82], [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], [54.97, 42.97], [54.82, 43.32], [54.75, 43.35], [54.5, 43.25], [54.25, 43.35], [54.0, 43.25], [53.47, 43.47], [53.32, 43.82], [53.25, 43.85], [53.0, 43.75], [52.47, 43.97], [52.25, 44.5], [52.38, 44.8], [52.25, 44.85], [52.0, 44.75], [51.75, 44.85], [51.68, 44.82], [51.53, 44.47], [51.0, 44.25], [50.75, 44.35], [50.5, 44.25], [50.25, 44.35], [50.0, 44.25], [49.75, 44.35], [49.5, 44.25], [48.97, 44.47], [48.82, 44.82], [48.75, 44.85], [48.5, 44.75], [47.97, 44.97], [47.75, 45.5], [47.97, 46.03], [48.32, 46.18], [48.47, 46.53], [49.0, 46.75]]]]}, "2015-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.97, 46.53], [49.5, 46.75], [49.75, 46.65], [50.0, 46.75], [50.53, 46.53], [50.68, 46.18], [50.75, 46.15], [51.0, 46.25], [51.25, 46.15], [51.5, 46.25], [51.75, 46.15], [52.0, 46.25], [52.25, 46.15], [52.5, 46.25], [52.75, 46.15], [53.0, 46.25], [53.5, 46.04], [54.0, 46.25], [54.53, 46.03], [54.68, 45.68], [55.03, 45.53], [55.18, 45.18], [55.25, 45.15], [55.5, 45.25], [56.03, 45.03], [56.18, 44.68], [56.25, 44.65], [56.5, 44.75], [56.75, 44.65], [56.82, 44.68], [56.97, 45.03], [57.5, 45.25], [57.75, 45.15], [58.0, 45.25], [58.25, 45.15], [58.5, 45.25], [58.75, 45.15], [58.82, 45.18], [58.97, 45.53], [59.5, 45.75], [59.75, 45.65], [60.0, 45.75], [60.53, 45.53], [60.68, 45.18], [61.03, 45.03], [61.25, 44.5], [61.03, 43.97], [60.5, 43.75], [60.25, 43.85], [60.0, 43.75], [59.75, 43.85], [59.68, 43.82], [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], [54.97, 42.97], [54.82, 43.32], [54.75, 43.35], [54.5, 43.25], [54.25, 43.35], [54.0, 43.25], [53.47, 43.47], [53.32, 43.82], [53.25, 43.85], [53.0, 43.75], [52.47, 43.97], [52.25, 44.5], [52.38, 44.8], [52.25, 44.85], [52.0, 44.75], [51.75, 44.85], [51.68, 44.82], [51.53, 44.47], [51.0, 44.25], [50.75, 44.35], [50.5, 44.25], [49.97, 44.47], [49.82, 44.82], [49.75, 44.85], [49.5, 44.75], [48.97, 44.97], [48.75, 45.5], [48.85, 45.75], [48.75, 46.0], [48.97, 46.53]]]]}, "2015-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.25, 45.5], [49.47, 46.03], [50.0, 46.25], [50.25, 46.15], [50.5, 46.25], [50.75, 46.15], [51.0, 46.25], [51.25, 46.15], [51.5, 46.25], [51.75, 46.15], [52.0, 46.25], [52.25, 46.15], [52.5, 46.25], [52.75, 46.15], [53.0, 46.25], [53.5, 46.04], [54.0, 46.25], [54.53, 46.03], [54.68, 45.68], [55.03, 45.53], [55.18, 45.18], [55.25, 45.15], [55.5, 45.25], [56.03, 45.03], [56.18, 44.68], [56.25, 44.65], [56.5, 44.75], [56.75, 44.65], [56.82, 44.68], [56.97, 45.03], [57.5, 45.25], [57.75, 45.15], [58.0, 45.25], [58.25, 45.15], [58.5, 45.25], [58.75, 45.15], [58.82, 45.18], [58.97, 45.53], [59.5, 45.75], [60.03, 45.53], [60.18, 45.18], [60.53, 45.03], [60.75, 44.5], [60.53, 43.97], [60.0, 43.75], [59.75, 43.85], [59.68, 43.82], [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], [54.97, 42.97], [54.82, 43.32], [54.75, 43.35], [54.5, 43.25], [54.25, 43.35], [54.0, 43.25], [53.47, 43.47], [53.32, 43.82], [53.25, 43.85], [53.0, 43.75], [52.47, 43.97], [52.25, 44.5], [52.38, 44.8], [52.25, 44.85], [52.0, 44.75], [51.75, 44.85], [51.68, 44.82], [51.53, 44.47], [51.0, 44.25], [50.75, 44.35], [50.5, 44.25], [49.97, 44.47], [49.82, 44.82], [49.47, 44.97], [49.25, 45.5]]]]}, "2015-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.97, 45.03], [58.5, 45.25], [59.03, 45.03], [59.25, 44.5], [59.15, 44.25], [59.25, 44.0], [59.03, 43.47], [58.5, 43.25], [57.97, 43.47], [57.75, 44.0], [57.85, 44.25], [57.75, 44.5], [57.97, 45.03]]], [[[49.47, 46.03], [50.0, 46.25], [50.25, 46.15], [50.5, 46.25], [50.75, 46.15], [51.0, 46.25], [51.25, 46.15], [51.5, 46.25], [51.75, 46.15], [52.0, 46.25], [52.25, 46.15], [52.5, 46.25], [52.75, 46.15], [53.0, 46.25], [53.5, 46.04], [54.0, 46.25], [54.53, 46.03], [54.68, 45.68], [55.03, 45.53], [55.18, 45.18], [55.25, 45.15], [55.5, 45.25], [56.03, 45.03], [56.18, 44.68], [56.25, 44.65], [56.5, 44.75], [56.75, 44.65], [57.0, 44.75], [57.53, 44.53], [57.75, 44.0], [57.53, 43.47], [57.0, 43.25], [56.75, 43.35], [56.5, 43.25], [56.25, 43.35], [56.0, 43.25], [55.75, 43.35], [55.5, 43.25], [54.97, 43.47], [54.82, 43.82], [54.75, 43.85], [54.5, 43.75], [53.97, 43.97], [53.82, 44.32], [53.75, 44.35], [53.68, 44.32], [53.53, 43.97], [53.0, 43.75], [52.47, 43.97], [52.25, 44.5], [52.38, 44.8], [52.25, 44.85], [52.0, 44.75], [51.75, 44.85], [51.68, 44.82], [51.53, 44.47], [51.0, 44.25], [50.75, 44.35], [50.5, 44.25], [49.97, 44.47], [49.82, 44.82], [49.47, 44.97], [49.25, 45.5], [49.47, 46.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -12.194735989631795}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.357169628111343}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-10.186946854327573, -10.73874605011548, -13.213172381276195, -14.251627212841754, -13.450295281905596, -11.757049538644708]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-14.783846783664785, -15.993707854657032, -18.33437523528221, -18.678943560560043, -17.32881752541809, -15.62705267952748]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.449800988491919, -7.365771145417045, -8.686631916584432, -9.356919715290276, -8.521350429929557, -7.742720027399692]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.995110707921356, -9.344732009930794, -11.940648256692668, -12.194735989631795, -10.678945941046095, -9.585503810966202]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9333901371407543, -1.7232771345241498, -1.6787860997285706, -1.691630839097815, -1.5436777845068343, -1.528427533374074]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.316496120563456, -2.0749577487359705, -2.1508649651847085, -1.9323579118722793, -1.725322983246508, -1.753606450464768]}}