{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:40.515548", "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": "2020-Jul-14_to_2020-Jul-19_25.0_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": 2020070000521}, "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": "July 14 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 19 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 76489.6864806808}, "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": ["Aegean 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": 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": 25.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.35, 40.25], [22.25, 40.5], [22.47, 41.03], [23.0, 41.25], [23.53, 41.03], [23.68, 40.68], [23.75, 40.65], [23.82, 40.68], [23.97, 41.03], [24.5, 41.25], [24.75, 41.15], [25.0, 41.25], [25.53, 41.03], [25.68, 40.68], [25.75, 40.65], [26.0, 40.75], [26.53, 40.53], [26.68, 40.18], [26.75, 40.15], [27.0, 40.25], [27.25, 40.15], [27.5, 40.25], [28.03, 40.03], [28.25, 39.5], [28.15, 39.25], [28.25, 39.0], [28.03, 38.47], [27.5, 38.25], [27.25, 38.35], [27.0, 38.25], [26.47, 38.47], [26.32, 38.82], [26.25, 38.85], [26.18, 38.82], [26.15, 38.75], [26.25, 38.5], [26.04, 38.0], [26.25, 37.5], [26.03, 36.97], [25.5, 36.75], [24.97, 36.97], [24.82, 37.32], [24.75, 37.35], [24.5, 37.25], [23.97, 37.47], [23.75, 38.0], [23.85, 38.25], [23.75, 38.5], [23.85, 38.75], [23.82, 38.82], [23.75, 38.85], [23.5, 38.75], [23.25, 38.85], [23.0, 38.75], [22.47, 38.97], [22.25, 39.5], [22.35, 39.75], [22.25, 40.0], [22.35, 40.25]]]]}, "2020-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.35, 40.25], [22.25, 40.5], [22.47, 41.03], [23.0, 41.25], [23.53, 41.03], [23.68, 40.68], [23.75, 40.65], [23.82, 40.68], [23.97, 41.03], [24.5, 41.25], [24.75, 41.15], [25.0, 41.25], [25.53, 41.03], [25.68, 40.68], [25.75, 40.65], [26.0, 40.75], [26.53, 40.53], [26.68, 40.18], [26.75, 40.15], [27.0, 40.25], [27.25, 40.15], [27.5, 40.25], [28.03, 40.03], [28.25, 39.5], [28.15, 39.25], [28.25, 39.0], [28.15, 38.75], [28.25, 38.5], [28.03, 37.97], [27.5, 37.75], [26.97, 37.97], [26.82, 38.32], [26.47, 38.47], [26.32, 38.82], [26.25, 38.85], [26.18, 38.82], [26.15, 38.75], [26.25, 38.5], [26.04, 38.0], [26.25, 37.5], [26.03, 36.97], [25.5, 36.75], [24.97, 36.97], [24.82, 37.32], [24.75, 37.35], [24.5, 37.25], [23.97, 37.47], [23.75, 38.0], [23.85, 38.25], [23.75, 38.5], [23.85, 38.75], [23.82, 38.82], [23.75, 38.85], [23.5, 38.75], [23.25, 38.85], [23.0, 38.75], [22.47, 38.97], [22.25, 39.5], [22.35, 39.75], [22.25, 40.0], [22.35, 40.25]]]]}, "2020-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.35, 40.25], [22.25, 40.5], [22.47, 41.03], [23.0, 41.25], [23.53, 41.03], [23.68, 40.68], [23.75, 40.65], [23.82, 40.68], [23.97, 41.03], [24.5, 41.25], [24.75, 41.15], [25.0, 41.25], [25.53, 41.03], [25.68, 40.68], [25.75, 40.65], [26.0, 40.75], [26.53, 40.53], [26.68, 40.18], [26.75, 40.15], [27.0, 40.25], [27.25, 40.15], [27.5, 40.25], [28.03, 40.03], [28.25, 39.5], [28.15, 39.25], [28.25, 39.0], [28.15, 38.75], [28.25, 38.5], [28.03, 37.97], [27.5, 37.75], [26.97, 37.97], [26.82, 38.32], [26.47, 38.47], [26.32, 38.82], [26.25, 38.85], [26.18, 38.82], [26.15, 38.75], [26.25, 38.5], [26.04, 38.0], [26.25, 37.5], [26.03, 36.97], [25.5, 36.75], [24.97, 36.97], [24.82, 37.32], [24.75, 37.35], [24.5, 37.25], [23.97, 37.47], [23.75, 38.0], [23.85, 38.25], [23.75, 38.5], [23.85, 38.75], [23.82, 38.82], [23.75, 38.85], [23.5, 38.75], [23.25, 38.85], [23.0, 38.75], [22.47, 38.97], [22.25, 39.5], [22.35, 39.75], [22.25, 40.0], [22.35, 40.25]]]]}, "2020-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, 37.97], [24.25, 38.5], [24.47, 39.03], [25.0, 39.25], [25.53, 39.03], [25.75, 38.5], [25.53, 37.97], [25.0, 37.75], [24.47, 37.97]]], [[[27.5, 39.75], [28.03, 39.53], [28.25, 39.0], [28.15, 38.75], [28.25, 38.5], [28.03, 37.97], [27.5, 37.75], [26.97, 37.97], [26.75, 38.5], [26.85, 38.75], [26.75, 39.0], [26.97, 39.53], [27.5, 39.75]]]]}, "2020-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.0, 39.25], [25.53, 39.03], [25.75, 38.5], [25.53, 37.97], [25.0, 37.75], [24.47, 37.97], [24.25, 38.5], [24.47, 39.03], [25.0, 39.25]]]]}, "2020-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.0, 39.25], [25.53, 39.03], [25.75, 38.5], [25.53, 37.97], [25.0, 37.75], [24.47, 37.97], [24.25, 38.5], [24.47, 39.03], [25.0, 39.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.915010783252626}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3299467073889906}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.651162609039318, 22.191732017679783, 22.590903207133124, 23.33769169260171, 22.63922129074416, 22.662109498592145]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.593880521241033, 20.47675016992673, 20.958078201388105, 22.659153456988236, 22.63922129074416, 22.662109498592145]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.102783643722625, -2.64876035859975, -2.2686557689908398, -2.3641506475723872, -1.6800414993942354, -1.6785682584874166]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8318534339538814, -3.915010783252626, -3.8182090609316788, -2.752619613321656, -1.6800414993942354, -1.6785682584874166]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6196925584747581, -1.9910496919388792, -1.7013008752409284, -1.4031783975919054, -1.477246196003529, -1.4869107391463887]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8802307646032133, -2.284234492658656, -2.072856123918866, -1.4386378315536394, -1.477246196003529, -1.4869107391463887]}}