{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:25.030286", "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": "2013-Sep-23_to_2013-Sep-26_41.0_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": 2013090001084}, "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 23 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 26 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 54199.285409399294}, "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"]}, "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": 41.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.0\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": 44.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 42.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 43.5], [38.47, 44.03], [39.0, 44.25], [39.25, 44.15], [39.5, 44.25], [39.75, 44.15], [40.0, 44.25], [40.25, 44.15], [40.5, 44.25], [40.75, 44.15], [41.0, 44.25], [41.53, 44.03], [41.68, 43.68], [42.0, 43.54], [42.5, 43.75], [43.03, 43.53], [43.18, 43.18], [43.25, 43.15], [43.5, 43.25], [44.03, 43.03], [44.25, 42.5], [44.03, 41.97], [43.5, 41.75], [43.25, 41.85], [43.0, 41.75], [42.5, 41.96], [42.0, 41.75], [41.75, 41.85], [41.5, 41.75], [41.25, 41.85], [41.0, 41.75], [40.75, 41.85], [40.5, 41.75], [39.97, 41.97], [39.82, 42.32], [39.75, 42.35], [39.5, 42.25], [38.97, 42.47], [38.82, 42.82], [38.47, 42.97], [38.25, 43.5]]]]}, "2013-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 43.5], [38.47, 44.03], [39.0, 44.25], [39.25, 44.15], [39.32, 44.18], [39.47, 44.53], [40.0, 44.75], [40.53, 44.53], [40.68, 44.18], [40.75, 44.15], [41.0, 44.25], [41.25, 44.15], [41.5, 44.25], [41.75, 44.15], [42.0, 44.25], [42.25, 44.15], [42.5, 44.25], [43.03, 44.03], [43.18, 43.68], [43.53, 43.53], [43.68, 43.18], [43.75, 43.15], 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"Maximum t2m anomaly recorded over entire duration", "value": -8.456202825226228}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.439025608504884}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.78313119839197, 9.387166112460875, 8.384612444914694, 5.02880550544711]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.9190198897084088, -0.4863756076844652, -1.8188058825585927, -3.105989696108054]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.570375866548361, -5.061370312702678, -5.889249226247027, -6.205225954781497]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.515446828498057, -7.533077180511555, -8.456202825226228, -8.225758218374096]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6305231552223878, -1.712660690877675, -1.9937796854248544, -1.9362120091292798]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8898537300908016, -2.2038114370880186, -2.5065868852990074, -2.4806843564610337]}}