{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:30.653767", "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": "2019-Sep-21_to_2019-Sep-23_42.5_43.5"}, "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": 2019090000696}, "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 21 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 23 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 54893.67494565223}, "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": ["Georgia", "Russian Federation", "Turkiye"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "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": ["Black 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": 43.5}, "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": 42.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.35, 42.75], [38.25, 43.0], [38.47, 43.53], [39.0, 43.75], 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[38.47, 43.53], [39.0, 43.75], [39.25, 43.65], [39.5, 43.75], [40.03, 43.53], [40.18, 43.18], [40.25, 43.15], [40.5, 43.25], [41.03, 43.03], [41.18, 42.68], [41.25, 42.65], [41.32, 42.68], [41.35, 42.75], [41.25, 43.0], [41.47, 43.53], [41.82, 43.68], [41.97, 44.03], [42.5, 44.25], [43.03, 44.03], [43.25, 43.5], [43.04, 43.0], [43.18, 42.68], [43.25, 42.65], [43.5, 42.75], [43.75, 42.65], [44.0, 42.75], [44.25, 42.65], [44.5, 42.75], [45.03, 42.53], [45.25, 42.0], [45.03, 41.47], [44.5, 41.25], [44.25, 41.35], [44.0, 41.25], [43.75, 41.35], [43.5, 41.25], [43.25, 41.35], [43.0, 41.25], [42.75, 41.35], [42.68, 41.32], [42.53, 40.97], [42.0, 40.75], [41.75, 40.85], [41.5, 40.75], [40.97, 40.97], [40.82, 41.32], [40.75, 41.35], [40.5, 41.25], [40.25, 41.35], [40.0, 41.25], [39.75, 41.35], [39.5, 41.25], [39.25, 41.35], [39.0, 41.25], [38.47, 41.47], [38.25, 42.0], [38.35, 42.25], [38.25, 42.5], [38.35, 42.75]]]]}, "2019-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.35, 42.75], [38.25, 43.0], [38.47, 43.53], [39.0, 43.75], [39.25, 43.65], [39.5, 43.75], [40.03, 43.53], [40.18, 43.18], [40.25, 43.15], [40.5, 43.25], [41.03, 43.03], [41.18, 42.68], [41.25, 42.65], [41.32, 42.68], [41.35, 42.75], [41.25, 43.0], [41.47, 43.53], [41.82, 43.68], [41.97, 44.03], [42.5, 44.25], [43.03, 44.03], [43.25, 43.5], [43.04, 43.0], [43.18, 42.68], [43.25, 42.65], [43.5, 42.75], [43.75, 42.65], [44.0, 42.75], [44.25, 42.65], [44.5, 42.75], [45.03, 42.53], [45.25, 42.0], [45.03, 41.47], [44.5, 41.25], [44.25, 41.35], [44.0, 41.25], [43.75, 41.35], [43.5, 41.25], [43.25, 41.35], [43.0, 41.25], [42.75, 41.35], [42.68, 41.32], [42.53, 40.97], [42.0, 40.75], [41.75, 40.85], [41.5, 40.75], [40.97, 40.97], [40.82, 41.32], [40.75, 41.35], [40.5, 41.25], [40.25, 41.35], [40.0, 41.25], [39.75, 41.35], [39.5, 41.25], [39.25, 41.35], [39.0, 41.25], [38.47, 41.47], [38.25, 42.0], [38.35, 42.25], [38.25, 42.5], [38.35, 42.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.816532286868096}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.927965415443529}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.435593077476085, 12.554284504624093, 14.211423011740521]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.9731984296922178, -2.7794505849799407, 0.593399610601864]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.096782127628804, -5.794657424597804, -3.8924566941039793]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.229274764038564, -8.816532286868096, -5.1365911425734225]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1195962339731884, -2.2882560197367456, -1.5089281392879315]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6176402154847445, -3.0013099975914903, -1.700358349704001]}}