{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:07.818195", "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": "2012-Aug-08_to_2012-Aug-10_330.0_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": 2012080000478}, "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": "August 08 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 10 2012"}, "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": 65562.02026047751}, "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": ["Azores"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Atlantic-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["North Atlantic Ocean"]}, "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": 330.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "330.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 328.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 333.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-31.53, 40.03], [-31.0, 40.25], [-30.75, 40.15], [-30.5, 40.25], [-29.97, 40.03], [-29.82, 39.68], [-29.75, 39.65], [-29.5, 39.75], [-29.25, 39.65], [-29.0, 39.75], [-28.47, 39.53], [-28.32, 39.18], [-28.25, 39.15], [-28.0, 39.25], [-27.47, 39.03], [-27.32, 38.68], [-27.25, 38.65], [-27.0, 38.75], [-26.47, 38.53], [-26.32, 38.18], [-25.97, 38.03], [-25.75, 37.5], [-25.97, 36.97], [-26.32, 36.82], [-26.47, 36.47], [-27.0, 36.25], [-27.25, 36.35], [-27.5, 36.25], [-28.03, 36.47], [-28.18, 36.82], [-28.25, 36.85], [-28.5, 36.75], [-28.75, 36.85], [-29.0, 36.75], [-29.53, 36.97], [-29.68, 37.32], [-30.03, 37.47], [-30.18, 37.82], [-30.25, 37.85], [-30.5, 37.75], [-31.03, 37.97], [-31.18, 38.32], [-31.53, 38.47], [-31.75, 39.0], [-31.65, 39.25], [-31.75, 39.5], [-31.53, 40.03]]]]}, "2012-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-31.53, 40.03], [-31.0, 40.25], [-30.75, 40.15], [-30.5, 40.25], [-29.97, 40.03], [-29.82, 39.68], [-29.75, 39.65], [-29.5, 39.75], [-29.25, 39.65], [-29.0, 39.75], [-28.47, 39.53], [-28.32, 39.18], [-28.25, 39.15], [-28.0, 39.25], [-27.47, 39.03], [-27.32, 38.68], [-27.25, 38.65], [-27.0, 38.75], [-26.47, 38.53], [-26.32, 38.18], [-25.97, 38.03], [-25.75, 37.5], [-25.97, 36.97], [-26.32, 36.82], [-26.47, 36.47], [-27.0, 36.25], [-27.25, 36.35], [-27.5, 36.25], [-28.03, 36.47], [-28.18, 36.82], [-28.25, 36.85], [-28.5, 36.75], [-28.75, 36.85], [-29.0, 36.75], [-29.53, 36.97], [-29.68, 37.32], [-30.03, 37.47], [-30.18, 37.82], [-30.25, 37.85], [-30.5, 37.75], [-31.03, 37.97], [-31.18, 38.32], [-31.53, 38.47], [-31.75, 39.0], [-31.65, 39.25], [-31.75, 39.5], [-31.53, 40.03]]]]}, "2012-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-31.53, 40.03], [-31.0, 40.25], [-30.75, 40.15], [-30.5, 40.25], [-29.97, 40.03], [-29.82, 39.68], [-29.75, 39.65], [-29.5, 39.75], [-29.25, 39.65], [-29.0, 39.75], [-28.47, 39.53], [-28.32, 39.18], [-28.25, 39.15], [-28.0, 39.25], [-27.47, 39.03], [-27.32, 38.68], [-27.25, 38.65], [-27.0, 38.75], [-26.47, 38.53], [-26.32, 38.18], [-25.97, 38.03], [-25.75, 37.5], [-25.97, 36.97], [-26.32, 36.82], [-26.47, 36.47], [-27.0, 36.25], [-27.25, 36.35], [-27.5, 36.25], [-28.03, 36.47], [-28.18, 36.82], [-28.25, 36.85], [-28.5, 36.75], [-28.75, 36.85], [-29.0, 36.75], [-29.53, 36.97], [-29.68, 37.32], [-30.03, 37.47], [-30.18, 37.82], [-30.25, 37.85], [-30.5, 37.75], [-31.03, 37.97], [-31.18, 38.32], [-31.53, 38.47], [-31.75, 39.0], [-31.65, 39.25], [-31.75, 39.5], [-31.53, 40.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4491209223255623}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5867862227264056}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.73951175592157, 20.682940594631816, 21.21749017952419]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.8913428990993, 19.73050901749923, 20.626941015255795]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7107552406823785, -1.774806391298057, -1.274797036198781]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4491209223255623, -2.1673364970952207, -1.6649951950043942]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.029540575247261, -2.122079063476915, -1.5218292038854768]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4572551957132447, -2.4909395778646477, -1.8313995289283234]}}