{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:54.021302", "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": "2023-Apr-27_to_2023-May-01_32.5_39.0"}, "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": 2023040000863}, "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": "April 27 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 01 2023"}, "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": 291534.9081728227}, "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": ["Aegean Sea", "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": 39.0}, "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": 32.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "32.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.25}, "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": {"2023-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.97, 35.97], [32.75, 36.5], [32.97, 37.03], [33.5, 37.25], [34.03, 37.03], [34.25, 36.5], [34.03, 35.97], [33.5, 35.75], [32.97, 35.97]]], [[[31.5, 39.25], [32.03, 39.03], [32.25, 38.5], [32.15, 38.25], [32.25, 38.0], [32.15, 37.75], [32.25, 37.5], [32.15, 37.25], [32.25, 37.0], [32.03, 36.47], [31.5, 36.25], [30.97, 36.47], [30.82, 36.82], [30.75, 36.85], [30.5, 36.75], [29.97, 36.97], [29.75, 37.5], [29.97, 38.03], [30.32, 38.18], [30.47, 38.53], [30.82, 38.68], [30.97, 39.03], [31.5, 39.25]]], [[[26.82, 40.18], [26.97, 40.53], [27.5, 40.75], [27.75, 40.65], [28.0, 40.75], [28.25, 40.65], [28.5, 40.75], [28.75, 40.65], [28.82, 40.68], [28.97, 41.03], [29.5, 41.25], [30.03, 41.03], [30.18, 40.68], [30.53, 40.53], [30.75, 40.0], [30.53, 39.47], [30.18, 39.32], [30.03, 38.97], [29.68, 38.82], [29.53, 38.47], [29.18, 38.32], [29.03, 37.97], [28.5, 37.75], [27.97, 37.97], [27.82, 38.32], [27.75, 38.35], [27.63, 38.3], [27.75, 38.0], [27.53, 37.47], [27.0, 37.25], [26.47, 37.47], [26.25, 38.0], [26.47, 38.53], [26.88, 38.7], [26.82, 38.82], [26.47, 38.97], [26.25, 39.5], [26.47, 40.03], [26.82, 40.18]]]]}, "2023-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, 38.0], [26.47, 38.53], [26.88, 38.7], [26.82, 38.82], [26.47, 38.97], [26.25, 39.5], [26.47, 40.03], [26.82, 40.18], [26.97, 40.53], [27.5, 40.75], [27.75, 40.65], [28.0, 40.75], [28.25, 40.65], [28.5, 40.75], [28.75, 40.65], [28.82, 40.68], [28.97, 41.03], [29.5, 41.25], [30.03, 41.03], [30.18, 40.68], [30.25, 40.65], [30.32, 40.68], [30.47, 41.03], [31.0, 41.25], [31.25, 41.15], [31.32, 41.18], [31.47, 41.53], [31.82, 41.68], [31.97, 42.03], [32.5, 42.25], [32.75, 42.15], [33.0, 42.25], [33.53, 42.03], [33.68, 41.68], [34.03, 41.53], [34.18, 41.18], [34.53, 41.03], [34.68, 40.68], [35.03, 40.53], [35.25, 40.0], [35.15, 39.75], [35.18, 39.68], [35.53, 39.53], [35.68, 39.18], [36.03, 39.03], [36.18, 38.68], [36.53, 38.53], [36.75, 38.0], [36.53, 37.47], [36.18, 37.32], [36.15, 37.25], [36.25, 37.0], [36.15, 36.75], [36.25, 36.5], [36.03, 35.97], [35.5, 35.75], [34.97, 35.97], [34.8, 36.38], [34.68, 36.32], [34.53, 35.97], [34.0, 35.75], [33.75, 35.85], [33.5, 35.75], [33.25, 35.85], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.75, 36.35], [31.5, 36.25], [30.97, 36.47], [30.82, 36.82], [30.75, 36.85], [30.5, 36.75], [30.25, 36.85], [30.0, 36.75], [29.75, 36.85], [29.5, 36.75], [28.97, 36.97], [28.75, 37.5], [28.53, 36.97], [28.0, 36.75], [27.75, 36.85], [27.5, 36.75], [26.97, 36.97], [26.82, 37.32], [26.47, 37.47], [26.25, 38.0]], [[28.85, 37.75], [28.82, 37.82], [28.75, 37.85], [28.68, 37.82], [28.65, 37.75], [28.75, 37.5], [28.85, 37.75]]]]}, "2023-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, 38.0], [26.47, 38.53], [26.88, 38.7], [26.82, 38.82], [26.47, 38.97], [26.25, 39.5], [26.47, 40.03], [26.82, 40.18], [26.97, 40.53], [27.5, 40.75], [27.75, 40.65], [28.0, 40.75], [28.25, 40.65], [28.5, 40.75], [28.75, 40.65], [28.82, 40.68], [28.97, 41.03], [29.5, 41.25], [30.03, 41.03], [30.18, 40.68], [30.25, 40.65], [30.32, 40.68], [30.47, 41.03], [31.0, 41.25], [31.25, 41.15], [31.32, 41.18], [31.47, 41.53], [31.82, 41.68], [31.97, 42.03], [32.5, 42.25], [32.75, 42.15], [33.0, 42.25], [33.53, 42.03], [33.68, 41.68], [34.03, 41.53], [34.18, 41.18], [34.53, 41.03], [34.68, 40.68], [35.03, 40.53], [35.25, 40.0], [35.15, 39.75], [35.18, 39.68], [35.53, 39.53], [35.68, 39.18], [36.03, 39.03], [36.18, 38.68], [36.53, 38.53], [36.75, 38.0], [36.53, 37.47], [36.18, 37.32], [36.15, 37.25], [36.25, 37.0], [36.15, 36.75], [36.25, 36.5], [36.03, 35.97], [35.5, 35.75], [34.97, 35.97], [34.8, 36.38], [34.68, 36.32], [34.53, 35.97], [34.0, 35.75], [33.75, 35.85], [33.5, 35.75], [33.25, 35.85], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.75, 36.35], [31.5, 36.25], [30.97, 36.47], [30.82, 36.82], [30.75, 36.85], [30.5, 36.75], [30.25, 36.85], [30.0, 36.75], [29.75, 36.85], [29.5, 36.75], [28.97, 36.97], [28.75, 37.5], [28.53, 36.97], [28.0, 36.75], [27.75, 36.85], [27.5, 36.75], [26.97, 36.97], [26.82, 37.32], [26.47, 37.47], [26.25, 38.0]], [[28.85, 37.75], [28.82, 37.82], [28.75, 37.85], [28.68, 37.82], [28.65, 37.75], [28.75, 37.5], [28.85, 37.75]]]]}, "2023-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.97, 38.53], [27.5, 38.75], [27.75, 38.65], [27.88, 38.7], [27.75, 39.0], [27.97, 39.53], [28.32, 39.68], [28.47, 40.03], [28.82, 40.18], [28.97, 40.53], [29.5, 40.75], [29.75, 40.65], [30.0, 40.75], [30.25, 40.65], [30.32, 40.68], [30.47, 41.03], [31.0, 41.25], [31.25, 41.15], [31.32, 41.18], [31.47, 41.53], [31.82, 41.68], [31.97, 42.03], [32.5, 42.25], [32.75, 42.15], [33.0, 42.25], [33.53, 42.03], [33.68, 41.68], [34.03, 41.53], [34.18, 41.18], [34.53, 41.03], [34.68, 40.68], [35.03, 40.53], [35.25, 40.0], [35.15, 39.75], [35.18, 39.68], [35.53, 39.53], [35.68, 39.18], [36.03, 39.03], [36.18, 38.68], [36.53, 38.53], [36.75, 38.0], [36.53, 37.47], [36.18, 37.32], [36.15, 37.25], [36.25, 37.0], [36.15, 36.75], [36.25, 36.5], [36.03, 35.97], [35.5, 35.75], [34.97, 35.97], [34.8, 36.38], [34.68, 36.32], [34.53, 35.97], [34.0, 35.75], [33.75, 35.85], [33.5, 35.75], [33.25, 35.85], [33.0, 35.75], [32.75, 35.85], [32.5, 35.75], [31.97, 35.97], [31.82, 36.32], [31.75, 36.35], [31.5, 36.25], [30.97, 36.47], [30.8, 36.88], [30.5, 36.75], [30.25, 36.85], [30.0, 36.75], [29.75, 36.85], [29.5, 36.75], [28.97, 36.97], [28.75, 37.5], [28.53, 36.97], [28.0, 36.75], [27.75, 36.85], [27.5, 36.75], [26.97, 36.97], [26.75, 37.5], [26.85, 37.75], [26.75, 38.0], [26.97, 38.53]], [[28.85, 37.75], [28.82, 37.82], [28.7, 37.88], [28.65, 37.75], [28.75, 37.5], [28.85, 37.75]]]]}, "2023-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.35, 39.25], [31.25, 39.5], [31.35, 39.75], [31.25, 40.0], [31.47, 40.53], [31.82, 40.68], [31.97, 41.03], [32.5, 41.25], [32.75, 41.15], [32.82, 41.18], [32.97, 41.53], [33.5, 41.75], [34.03, 41.53], [34.18, 41.18], [34.53, 41.03], [34.75, 40.5], [34.53, 39.97], [34.18, 39.82], [34.15, 39.75], [34.18, 39.68], [34.53, 39.53], [34.68, 39.18], [34.75, 39.15], [35.0, 39.25], [35.53, 39.03], [35.75, 38.5], [35.65, 38.25], [35.75, 38.0], [35.53, 37.47], [35.0, 37.25], [34.7, 37.38], [34.53, 36.97], [34.0, 36.75], [33.47, 36.97], [33.25, 37.5], [33.35, 37.75], [33.32, 37.82], [33.25, 37.85], [33.0, 37.75], [32.75, 37.85], [32.5, 37.75], [32.25, 37.85], [32.0, 37.75], [31.47, 37.97], [31.25, 38.5], [31.35, 38.75], [31.25, 39.0], [31.35, 39.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.590305496018573}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.765180378264747}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.09477875056507, 7.2679615340042005, 6.510864704461426, 7.663380351763124, 9.111236241835229]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.640692220306107, 2.190848752173281, 0.6494151293904906, 2.1073068103118544, 5.9569849727445785]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.282275940276735, -5.683438524205426, -6.65481852798205, -5.545713066295329, -4.448486933333459]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.1338004650785365, -7.802067225754627, -8.590305496018573, -8.024885798744265, -5.257065492383958]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.492264928219807, -1.8427784875363502, -2.1745519829111974, -1.8027275840279484, -1.4286660308770356]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6565406498794568, -2.3929826528966975, -2.687806977912721, -2.495733648209111, -1.654796691561755]}}