{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:41.100313", "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-Oct-18_to_2013-Oct-22_31.5_38.5"}, "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": 2013100000854}, "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": "October 18 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 22 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 206354.5159841556}, "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": ["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"]}, "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": ["Mediterranean Sea - Eastern Basin"]}, "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": 38.5}, "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": 31.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "31.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 27.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.97, 37.03], [32.5, 37.25], [33.03, 37.03], [33.18, 36.68], [33.53, 36.53], [33.75, 36.0], [33.53, 35.47], [33.0, 35.25], [32.47, 35.47], [32.32, 35.82], [31.97, 35.97], [31.75, 36.5], [31.97, 37.03]]], [[[35.75, 37.5], [35.53, 36.97], [35.18, 36.82], [35.03, 36.47], [34.5, 36.25], [33.97, 36.47], [33.75, 37.0], [33.97, 37.53], [34.32, 37.68], [34.47, 38.03], [35.0, 38.25], [35.53, 38.03], [35.75, 37.5]]], [[[28.25, 38.65], [28.32, 38.68], [28.35, 38.75], [28.25, 39.0], [28.47, 39.53], [29.0, 39.75], [29.53, 39.53], [29.68, 39.18], [30.03, 39.03], [30.18, 38.68], [30.25, 38.65], [30.32, 38.68], [30.47, 39.03], [31.0, 39.25], [31.25, 39.15], [31.5, 39.25], [32.03, 39.03], [32.25, 38.5], [32.15, 38.25], [32.25, 38.0], [32.03, 37.47], [31.68, 37.32], [31.53, 36.97], [31.0, 36.75], [30.7, 36.88], [30.53, 36.47], [30.0, 36.25], [29.75, 36.35], [29.5, 36.25], [28.97, 36.47], [28.82, 36.82], [28.5, 36.96], [28.0, 36.75], [27.47, 36.97], [27.25, 37.5], [27.35, 37.75], [27.25, 38.0], [27.47, 38.53], [28.0, 38.75], [28.25, 38.65]]]]}, "2013-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.47, 38.53], [28.0, 38.75], [28.25, 38.65], [28.32, 38.68], [28.35, 38.75], [28.25, 39.0], [28.47, 39.53], [29.0, 39.75], [29.53, 39.53], [29.68, 39.18], [30.03, 39.03], [30.18, 38.68], [30.25, 38.65], [30.32, 38.68], [30.47, 39.03], [31.0, 39.25], [31.25, 39.15], [31.5, 39.25], [32.03, 39.03], [32.18, 38.68], [32.53, 38.53], [32.7, 38.13], [32.88, 38.2], [32.75, 38.5], [32.97, 39.03], [33.5, 39.25], [34.0, 39.04], [34.5, 39.25], [34.75, 39.15], [34.82, 39.18], [34.97, 39.53], [35.5, 39.75], [35.75, 39.65], [36.0, 39.75], [36.25, 39.65], [36.32, 39.68], [36.47, 40.03], [37.0, 40.25], [37.25, 40.15], [37.5, 40.25], [37.75, 40.15], [37.82, 40.18], [37.97, 40.53], [38.5, 40.75], [38.75, 40.65], [39.0, 40.75], [39.25, 40.65], [39.5, 40.75], [40.03, 40.53], [40.18, 40.18], [40.53, 40.03], [40.75, 39.5], [40.53, 38.97], [40.0, 38.75], [39.75, 38.85], [39.68, 38.82], [39.53, 38.47], [39.18, 38.32], [39.03, 37.97], [38.68, 37.82], [38.53, 37.47], [38.0, 37.25], [37.75, 37.35], [37.5, 37.25], [37.25, 37.35], [37.0, 37.25], [36.75, 37.35], [36.5, 37.25], [36.25, 37.35], [36.0, 37.25], [35.75, 37.35], [35.68, 37.32], [35.53, 36.97], [35.18, 36.82], [35.03, 36.47], [34.5, 36.25], [34.25, 36.35], [34.0, 36.25], [33.75, 36.35], [33.68, 36.32], [33.65, 36.25], [33.75, 36.0], [33.53, 35.47], [33.0, 35.25], [32.47, 35.47], [32.32, 35.82], [31.97, 35.97], [31.75, 36.5], [31.85, 36.75], [31.8, 36.88], [31.5, 36.75], [31.25, 36.85], [31.0, 36.75], [30.7, 36.88], [30.53, 36.47], [30.0, 36.25], [29.75, 36.35], [29.5, 36.25], [28.97, 36.47], [28.82, 36.82], [28.5, 36.96], [28.0, 36.75], [27.47, 36.97], [27.25, 37.5], [27.35, 37.75], [27.25, 38.0], [27.47, 38.53]]]]}, "2013-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.47, 38.53], [28.0, 38.75], [28.25, 38.65], [28.32, 38.68], [28.35, 38.75], [28.25, 39.0], [28.47, 39.53], [29.0, 39.75], [29.53, 39.53], [29.68, 39.18], [30.03, 39.03], [30.18, 38.68], [30.25, 38.65], [30.32, 38.68], [30.47, 39.03], [31.0, 39.25], [31.25, 39.15], [31.32, 39.18], [31.47, 39.53], [32.0, 39.75], [32.5, 39.54], [33.0, 39.75], [33.53, 39.53], [33.68, 39.18], [33.75, 39.15], [34.0, 39.25], [34.25, 39.15], [34.38, 39.2], [34.25, 39.5], [34.47, 40.03], [35.0, 40.25], [35.53, 40.03], [35.68, 39.68], [35.75, 39.65], [36.0, 39.75], [36.25, 39.65], [36.32, 39.68], [36.47, 40.03], [37.0, 40.25], [37.25, 40.15], [37.5, 40.25], [37.75, 40.15], [37.82, 40.18], [37.97, 40.53], [38.5, 40.75], [38.75, 40.65], [39.0, 40.75], [39.25, 40.65], [39.5, 40.75], [40.03, 40.53], [40.18, 40.18], [40.53, 40.03], [40.75, 39.5], [40.53, 38.97], [40.18, 38.82], [40.03, 38.47], [39.5, 38.25], [39.25, 38.35], [39.18, 38.32], [39.03, 37.97], [38.68, 37.82], [38.53, 37.47], [38.0, 37.25], [37.75, 37.35], [37.5, 37.25], [37.25, 37.35], [37.0, 37.25], [36.75, 37.35], [36.5, 37.25], [36.25, 37.35], [36.0, 37.25], [35.75, 37.35], [35.68, 37.32], [35.65, 37.25], [35.75, 37.0], [35.53, 36.47], [35.0, 36.25], [34.75, 36.35], [34.5, 36.25], [34.25, 36.35], [34.0, 36.25], [33.75, 36.35], [33.68, 36.32], [33.65, 36.25], [33.75, 36.0], [33.53, 35.47], [33.0, 35.25], [32.47, 35.47], [32.32, 35.82], [31.97, 35.97], [31.75, 36.5], [31.85, 36.75], [31.8, 36.88], [31.5, 36.75], [31.25, 36.85], [31.0, 36.75], [30.7, 36.88], [30.53, 36.47], [30.0, 36.25], [29.75, 36.35], [29.5, 36.25], [28.97, 36.47], [28.82, 36.82], [28.5, 36.96], [28.0, 36.75], [27.47, 36.97], [27.25, 37.5], [27.35, 37.75], [27.25, 38.0], [27.47, 38.53]]]]}, "2013-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.47, 38.53], [28.0, 38.75], [28.3, 38.63], [28.47, 39.03], [29.0, 39.25], [29.25, 39.15], [29.5, 39.25], [30.03, 39.03], [30.18, 38.68], [30.25, 38.65], [30.32, 38.68], [30.47, 39.03], [31.0, 39.25], [31.25, 39.15], [31.32, 39.18], [31.47, 39.53], [32.0, 39.75], [32.5, 39.54], [33.0, 39.75], [33.53, 39.53], [33.68, 39.18], [33.75, 39.15], [34.0, 39.25], [34.25, 39.15], [34.38, 39.2], [34.25, 39.5], [34.47, 40.03], [35.0, 40.25], [35.53, 40.03], [35.68, 39.68], [35.75, 39.65], [36.0, 39.75], [36.25, 39.65], [36.32, 39.68], [36.47, 40.03], [37.0, 40.25], [37.25, 40.15], [37.5, 40.25], [37.75, 40.15], [37.82, 40.18], [37.97, 40.53], [38.5, 40.75], [38.75, 40.65], [39.0, 40.75], [39.25, 40.65], [39.5, 40.75], [40.03, 40.53], [40.18, 40.18], [40.53, 40.03], [40.75, 39.5], [40.53, 38.97], [40.18, 38.82], [40.03, 38.47], [39.5, 38.25], [39.25, 38.35], [39.18, 38.32], [39.03, 37.97], [38.68, 37.82], [38.53, 37.47], [38.0, 37.25], [37.75, 37.35], [37.5, 37.25], [37.25, 37.35], [37.0, 37.25], [36.75, 37.35], [36.5, 37.25], [36.25, 37.35], [36.0, 37.25], [35.75, 37.35], [35.68, 37.32], [35.65, 37.25], [35.75, 37.0], [35.53, 36.47], [35.0, 36.25], [34.75, 36.35], [34.5, 36.25], [34.25, 36.35], [34.0, 36.25], [33.75, 36.35], [33.68, 36.32], [33.65, 36.25], [33.75, 36.0], [33.53, 35.47], [33.0, 35.25], [32.47, 35.47], [32.32, 35.82], [31.97, 35.97], [31.75, 36.5], [31.85, 36.75], [31.8, 36.88], [31.5, 36.75], [31.25, 36.85], [31.0, 36.75], [30.47, 36.97], [30.32, 37.32], [30.25, 37.35], [30.0, 37.25], [29.75, 37.35], [29.5, 37.25], [29.25, 37.35], [29.0, 37.25], [28.7, 37.38], [28.53, 36.97], [28.0, 36.75], [27.47, 36.97], [27.25, 37.5], [27.35, 37.75], [27.25, 38.0], [27.47, 38.53]]]]}, "2013-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.5, 39.54], [33.0, 39.75], [33.53, 39.53], [33.68, 39.18], [33.75, 39.15], [34.0, 39.25], [34.43, 39.07], [34.25, 39.5], [34.47, 40.03], [35.0, 40.25], [35.53, 40.03], [35.68, 39.68], [36.03, 39.53], [36.25, 39.0], [36.03, 38.47], [35.5, 38.25], [34.97, 38.47], [34.82, 38.82], [34.57, 38.93], [34.75, 38.5], [34.65, 38.25], [34.75, 38.0], [34.57, 37.57], [35.0, 37.75], [35.53, 37.53], [35.75, 37.0], [35.53, 36.47], [35.0, 36.25], [34.47, 36.47], [34.25, 37.0], [34.43, 37.43], [34.18, 37.32], [34.03, 36.97], [33.68, 36.82], [33.53, 36.47], [33.0, 36.25], [32.47, 36.47], [32.32, 36.82], [31.97, 36.97], [31.75, 37.5], [31.85, 37.75], [31.82, 37.82], [31.75, 37.85], [31.5, 37.75], [30.97, 37.97], [30.75, 38.5], [30.97, 39.03], [31.32, 39.18], [31.47, 39.53], [32.0, 39.75], [32.5, 39.54]]], [[[37.25, 38.5], [37.47, 39.03], [38.0, 39.25], [38.53, 39.03], [38.75, 38.5], [38.53, 37.97], [38.0, 37.75], [37.47, 37.97], [37.25, 38.5]]], [[[38.75, 39.0], [38.97, 39.53], [39.5, 39.75], [40.03, 39.53], [40.25, 39.0], [40.03, 38.47], [39.5, 38.25], [38.97, 38.47], [38.75, 39.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.603266145882401}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.21680706382487}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.777023141204893, 8.158976822753118, 7.225320598023075, 7.037422889244965, 8.771590387099423]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.335872259683299, 3.0202624213541753, 0.9881344766534426, 1.7803730637659214, 7.052395717679474]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.196712816158367, -4.524834343628872, -5.579042019199827, -5.505656790805922, -5.007288132697378]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.41560127003163, -5.880193480776541, -6.978985704648494, -7.603266145882401, -6.414383560951364]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8318697857301551, -1.5911380941749347, -1.949803935317385, -1.8947762239276285, -1.5793185638048166]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.091436693408112, -2.061453764237175, -2.3895644065994865, -2.3521619944905807, -1.8452448338216745]}}