{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:45.639641", "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": "2024-May-13_to_2024-May-18_52.0_44.5"}, "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": 2024050000380}, "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 13 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 18 2024"}, "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": 71220.05649297626}, "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"]}, "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": ["Caspian 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": 44.5}, "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": 52.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "52.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 50.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 53.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[53.68, 46.68], [54.03, 46.53], [54.25, 46.0], [54.15, 45.75], [54.25, 45.5], [54.15, 45.25], [54.25, 45.0], [54.03, 44.47], [53.68, 44.32], [53.53, 43.97], [53.0, 43.75], [52.75, 43.85], [52.5, 43.75], [52.25, 43.85], [52.0, 43.75], [51.75, 43.85], [51.5, 43.75], [51.25, 43.85], [51.0, 43.75], [50.47, 43.97], [50.32, 44.32], [49.97, 44.47], [49.75, 45.0], [49.88, 45.3], [49.47, 45.47], [49.25, 46.0], [49.35, 46.25], [49.25, 46.5], [49.47, 47.03], [49.82, 47.18], [49.97, 47.53], [50.5, 47.75], [51.03, 47.53], [51.18, 47.18], [51.25, 47.15], [51.32, 47.18], [51.47, 47.53], [52.0, 47.75], [52.25, 47.65], [52.5, 47.75], [53.03, 47.53], [53.18, 47.18], [53.53, 47.03], [53.68, 46.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe", "W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.25, 46.5], [49.47, 47.03], [49.82, 47.18], [49.97, 47.53], [50.5, 47.75], [51.03, 47.53], [51.25, 47.0], [51.15, 46.75], [51.25, 46.5], [51.15, 46.25], [51.25, 46.0], [51.04, 45.5], [51.25, 45.0], [51.03, 44.47], [50.5, 44.25], [49.97, 44.47], [49.75, 45.0], [49.88, 45.3], [49.47, 45.47], [49.25, 46.0], [49.35, 46.25], [49.25, 46.5]]]]}, "2024-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.25, 46.5], [49.47, 47.03], [49.82, 47.18], [49.97, 47.53], [50.5, 47.75], [51.03, 47.53], [51.25, 47.0], [51.15, 46.75], [51.25, 46.5], [51.15, 46.25], [51.25, 46.0], [51.04, 45.5], [51.25, 45.0], [51.03, 44.47], [50.5, 44.25], [49.97, 44.47], [49.75, 45.0], [49.88, 45.3], [49.47, 45.47], [49.25, 46.0], [49.35, 46.25], [49.25, 46.5]]]]}, "2024-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[49.25, 46.5], [49.47, 47.03], [49.82, 47.18], [49.97, 47.53], [50.5, 47.75], [51.03, 47.53], [51.18, 47.18], [51.25, 47.15], [51.32, 47.18], [51.47, 47.53], [52.0, 47.75], [52.25, 47.65], [52.5, 47.75], [53.03, 47.53], [53.18, 47.18], [53.53, 47.03], 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46.18], [51.47, 46.53], [52.0, 46.75], [52.25, 46.65], [52.32, 46.68], [52.47, 47.03], [53.0, 47.25], [53.53, 47.03], [53.68, 46.68], [54.03, 46.53], [54.25, 46.0], [54.15, 45.75], [54.25, 45.5], [54.15, 45.25], [54.25, 45.0], [54.03, 44.47], [53.68, 44.32], [53.53, 43.97], [53.0, 43.75], [52.75, 43.85], [52.5, 43.75], [52.25, 43.85], [52.0, 43.75], [51.75, 43.85], [51.5, 43.75], [51.25, 43.85], [51.0, 43.75], [50.47, 43.97], [50.25, 44.5], [50.47, 45.03], [50.82, 45.18], [50.85, 45.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.936221259724107}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.5544629584523575}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.524096137194476, 14.598516032348755, 14.362585508354641, 14.904433365864065, 13.904112111116717, 14.211480878870134]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.518224008215157, 14.29974917983327, 12.847506185393115, 14.397972794671148, 11.452956470874085, 12.469518509261604]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.0968571336398725, -4.317382983960006, -5.258714322627662, -5.009716759140211, -6.155195011905271, -6.116123317099584]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.945789437318979, -4.6428807163396755, -6.729691347623316, -5.70224812780458, -8.936221259724107, -7.95153844328064]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9934892835662874, -1.397126054352252, -1.553995150546318, -1.4411129364839508, -1.7012140823526143, -1.6510504171087887]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.197294642962241, -1.537141781558188, -1.9520997617681315, -1.6448390542421982, -2.1834049911704283, -2.042083077731414]}}