{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:09.797265", "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": "2010-Jul-21_to_2010-Jul-26_359.5_42.0"}, "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": 2010070000912}, "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 21 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 26 2010"}, "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": 68512.10778126668}, "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": ["Andorra", "France", "Spain"]}, "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": ["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": []}, "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": 42.0}, "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": 359.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "359.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 355.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 361.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.5, 43.75], [-3.97, 43.53], [-3.75, 43.0], [-3.97, 42.47], [-4.5, 42.25], [-5.03, 42.47], [-5.25, 43.0], [-5.03, 43.53], [-4.5, 43.75]]]]}, "2010-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.25, 43.0], [-5.03, 43.53], [-4.5, 43.75], [-3.97, 43.53], [-3.82, 43.18], [-3.75, 43.15], [-3.5, 43.25], [-3.25, 43.15], [-3.18, 43.18], [-3.03, 43.53], [-2.5, 43.75], [-2.25, 43.65], [-2.0, 43.75], [-1.5, 43.54], [-1.0, 43.75], [-0.75, 43.65], [-0.5, 43.75], [-0.25, 43.65], [0.0, 43.75], [0.25, 43.65], [0.5, 43.75], [0.75, 43.65], [1.0, 43.75], [1.25, 43.65], [1.5, 43.75], [2.03, 43.53], [2.25, 43.0], [2.03, 42.47], [1.5, 42.25], [1.25, 42.35], [1.0, 42.25], [0.75, 42.35], [0.63, 42.3], [0.75, 42.0], [0.65, 41.75], [0.75, 41.5], [0.53, 40.97], [0.0, 40.75], [-0.25, 40.85], [-0.5, 40.75], [-0.75, 40.85], [-1.0, 40.75], [-1.25, 40.85], [-1.5, 40.75], [-1.75, 40.85], [-2.0, 40.75], [-2.53, 40.97], [-2.68, 41.32], [-3.03, 41.47], [-3.18, 41.82], [-3.25, 41.85], [-3.32, 41.82], [-3.47, 41.47], [-4.0, 41.25], [-4.53, 41.47], [-4.75, 42.0], [-4.65, 42.25], [-4.68, 42.32], [-5.03, 42.47], [-5.25, 43.0]]]]}, "2010-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.25, 43.0], [-5.03, 43.53], [-4.5, 43.75], [-3.97, 43.53], [-3.82, 43.18], [-3.75, 43.15], [-3.5, 43.25], [-3.25, 43.15], [-3.18, 43.18], [-3.03, 43.53], [-2.5, 43.75], [-2.25, 43.65], [-2.0, 43.75], [-1.5, 43.54], [-1.0, 43.75], [-0.75, 43.65], [-0.5, 43.75], [-0.25, 43.65], [0.0, 43.75], [0.25, 43.65], [0.5, 43.75], [0.75, 43.65], [1.0, 43.75], [1.25, 43.65], [1.5, 43.75], [2.03, 43.53], [2.25, 43.0], [2.03, 42.47], [1.5, 42.25], [1.25, 42.35], [1.0, 42.25], [0.75, 42.35], [0.63, 42.3], [0.75, 42.0], [0.65, 41.75], [0.75, 41.5], [0.53, 40.97], [0.0, 40.75], [-0.25, 40.85], [-0.5, 40.75], [-0.75, 40.85], [-1.0, 40.75], [-1.25, 40.85], [-1.5, 40.75], [-1.75, 40.85], [-2.0, 40.75], [-2.53, 40.97], [-2.68, 41.32], [-3.03, 41.47], [-3.18, 41.82], [-3.25, 41.85], [-3.32, 41.82], [-3.47, 41.47], [-4.0, 41.25], [-4.53, 41.47], [-4.75, 42.0], [-4.65, 42.25], [-4.68, 42.32], [-5.03, 42.47], [-5.25, 43.0]]]]}, "2010-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.53, 43.03], [-4.0, 43.25], [-3.75, 43.15], [-3.5, 43.25], [-3.25, 43.15], [-3.18, 43.18], [-3.03, 43.53], [-2.5, 43.75], [-2.25, 43.65], [-2.0, 43.75], [-1.5, 43.54], [-1.0, 43.75], [-0.75, 43.65], [-0.5, 43.75], [-0.25, 43.65], [0.0, 43.75], [0.25, 43.65], [0.5, 43.75], [0.75, 43.65], [1.0, 43.75], [1.25, 43.65], [1.5, 43.75], [2.03, 43.53], [2.25, 43.0], [2.15, 42.75], [2.25, 42.5], [2.03, 41.97], [1.5, 41.75], [0.97, 41.97], [0.82, 42.32], [0.75, 42.35], [0.63, 42.3], [0.75, 42.0], [0.65, 41.75], [0.75, 41.5], [0.53, 40.97], [0.0, 40.75], [-0.25, 40.85], [-0.5, 40.75], [-0.75, 40.85], [-1.0, 40.75], [-1.25, 40.85], [-1.5, 40.75], [-1.75, 40.85], [-2.0, 40.75], [-2.53, 40.97], [-2.68, 41.32], [-3.03, 41.47], [-3.18, 41.82], [-3.25, 41.85], [-3.32, 41.82], [-3.47, 41.47], [-4.0, 41.25], [-4.53, 41.47], [-4.75, 42.0], [-4.65, 42.25], [-4.75, 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42.5], [0.97, 43.03], [1.5, 43.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.113595922561842}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.330825379846858}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.645522744828213, 16.68573849288822, 17.106923478450028, 17.360471813700315, 17.52564428503814, 12.635776650702041]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.645522744828213, 11.99657726040158, 12.730247925066806, 11.61514949015367, 11.107872486555436, 12.635776650702041]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.466166262467084, -4.874554529119428, -4.421570898977399, -4.083473742291505, -3.958766265475039, -3.0700053824660927]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.466166262467084, -6.113595922561842, -5.601438175252554, -5.411961205787634, -5.097746161365137, -3.0700053824660927]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4053354501760327, -1.7030044587435422, -1.6087889903920105, -1.567755423879937, -1.5956547952626836, -1.4989575548637941]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4053354501760327, -2.097074590641029, -1.8951166577512553, -2.161303313042474, -2.191616357474569, -1.4989575548637941]}}