{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:35.861511", "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": "2016-Jan-18_to_2016-Jan-20_27.5_40.5"}, "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": 2016010000455}, "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 18 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2016"}, "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": 61627.61223265798}, "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": ["Greece", "Turkiye"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Europe"]}, "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": ["Sea of Marmara"]}, "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": 40.5}, "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": 27.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "27.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 25.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.75, 40.0], [25.97, 40.53], [26.5, 40.75], [26.75, 40.65], [26.82, 40.68], [26.97, 41.03], [27.32, 41.18], [27.35, 41.25], [27.25, 41.5], [27.47, 42.03], [28.0, 42.25], [28.53, 42.03], [28.68, 41.68], [28.75, 41.65], [29.0, 41.75], [29.25, 41.65], [29.5, 41.75], [29.75, 41.65], [30.0, 41.75], [30.53, 41.53], [30.75, 41.0], [30.53, 40.47], [30.18, 40.32], [30.03, 39.97], [29.5, 39.75], [29.25, 39.85], [29.18, 39.82], [29.15, 39.75], [29.25, 39.5], [29.03, 38.97], [28.68, 38.82], [28.53, 38.47], [28.0, 38.25], [27.75, 38.35], [27.68, 38.32], [27.53, 37.97], [27.0, 37.75], [26.75, 37.85], [26.5, 37.75], [26.25, 37.85], [26.0, 37.75], [25.47, 37.97], [25.25, 38.5], [25.47, 39.03], [25.82, 39.18], [25.96, 39.5], [25.75, 40.0]]]]}, "2016-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.75, 40.0], [25.97, 40.53], [26.5, 40.75], [26.75, 40.65], [26.82, 40.68], [26.97, 41.03], [27.32, 41.18], [27.35, 41.25], [27.25, 41.5], [27.47, 42.03], [28.0, 42.25], [28.53, 42.03], [28.68, 41.68], [28.75, 41.65], [29.0, 41.75], [29.25, 41.65], [29.5, 41.75], [29.75, 41.65], [30.0, 41.75], [30.53, 41.53], [30.75, 41.0], [30.53, 40.47], [30.18, 40.32], [30.03, 39.97], [29.5, 39.75], [29.25, 39.85], [29.18, 39.82], [29.15, 39.75], [29.25, 39.5], [29.03, 38.97], [28.68, 38.82], [28.53, 38.47], [28.0, 38.25], [27.75, 38.35], [27.68, 38.32], [27.53, 37.97], [27.0, 37.75], [26.75, 37.85], [26.5, 37.75], [26.25, 37.85], [26.0, 37.75], [25.47, 37.97], [25.25, 38.5], [25.47, 39.03], [25.82, 39.18], [25.96, 39.5], [25.75, 40.0]]]]}, "2016-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.75, 40.0], [25.97, 40.53], [26.5, 40.75], [26.75, 40.65], [26.82, 40.68], [26.97, 41.03], [27.32, 41.18], [27.35, 41.25], [27.25, 41.5], [27.47, 42.03], [28.0, 42.25], [28.53, 42.03], [28.68, 41.68], [28.75, 41.65], [29.0, 41.75], [29.25, 41.65], [29.5, 41.75], [29.75, 41.65], [30.0, 41.75], [30.53, 41.53], [30.75, 41.0], [30.53, 40.47], [30.18, 40.32], [30.03, 39.97], [29.5, 39.75], [29.25, 39.85], [29.18, 39.82], [29.15, 39.75], [29.25, 39.5], [29.03, 38.97], [28.68, 38.82], [28.53, 38.47], [28.0, 38.25], [27.75, 38.35], [27.68, 38.32], [27.53, 37.97], [27.0, 37.75], [26.75, 37.85], [26.5, 37.75], [26.25, 37.85], [26.0, 37.75], [25.47, 37.97], [25.25, 38.5], [25.47, 39.03], [25.82, 39.18], [25.96, 39.5], [25.75, 40.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.248861654820871}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.781259628543168}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.48284857105960555, -0.1342480393320784, 0.9584410611930139]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.8318194166179183, -4.048992667552966, -3.381915366777605]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.744653614897555, -6.3729985488122844, -5.226126721919666]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.248861654820871, -8.218788556190248, -7.179933456131323]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8838897372356578, -1.9999979077579289, -1.5601821459668836]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.582092984576439, -2.1984995405845074, -2.0346413573450794]}}