{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:23.023394", "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": "2015-Jul-08_to_2015-Jul-10_358.0_60.0"}, "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": 2015070000465}, "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 08 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 10 2015"}, "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": 79358.43411825277}, "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": ["United Kingdom"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "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", "North Sea", "Norwegian 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": 60.0}, "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": 358.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "358.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 356.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 360.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 66.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.65, 63.25], [-3.75, 63.5], [-3.53, 64.03], [-3.0, 64.25], 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[-3.75, 63.0], [-3.65, 63.25]]]]}, "2015-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.65, 63.25], [-3.75, 63.5], [-3.53, 64.03], [-3.0, 64.25], [-2.7, 64.13], [-2.65, 64.25], [-2.75, 64.5], [-2.65, 64.75], [-2.75, 65.0], [-2.53, 65.53], [-2.18, 65.68], [-2.03, 66.03], [-1.68, 66.18], [-1.53, 66.53], [-1.0, 66.75], [-0.75, 66.65], [-0.5, 66.75], [-0.25, 66.65], [0.0, 66.75], [0.25, 66.65], [0.5, 66.75], [1.03, 66.53], [1.25, 66.0], [1.15, 65.75], [1.25, 65.5], [1.03, 64.97], [0.5, 64.75], [0.25, 64.85], [0.18, 64.82], [0.03, 64.47], [-0.37, 64.3], [-0.25, 64.0], [-0.47, 63.47], [-0.82, 63.32], [-0.96, 63.0], [-0.82, 62.68], [-0.75, 62.65], [-0.5, 62.75], [-0.25, 62.65], [0.0, 62.75], [0.25, 62.65], [0.5, 62.75], [1.03, 62.53], [1.25, 62.0], [1.03, 61.47], [0.68, 61.32], [0.65, 61.25], [0.75, 61.0], [0.65, 60.75], [0.75, 60.5], [0.65, 60.25], [0.75, 60.0], [0.53, 59.47], [0.0, 59.25], [-0.5, 59.46], [-1.0, 59.25], [-1.5, 59.46], [-2.0, 59.25], [-2.25, 59.35], [-2.5, 59.25], [-3.03, 59.47], [-3.25, 60.0], [-3.15, 60.25], [-3.25, 60.5], [-3.12, 60.8], [-3.53, 60.97], [-3.75, 61.5], [-3.54, 62.0], [-3.75, 62.5], [-3.65, 62.75], [-3.75, 63.0], [-3.65, 63.25]]]]}, "2015-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.65, 63.25], [-3.75, 63.5], [-3.53, 64.03], [-3.0, 64.25], [-2.7, 64.13], [-2.65, 64.25], [-2.75, 64.5], [-2.65, 64.75], [-2.75, 65.0], [-2.53, 65.53], [-2.18, 65.68], [-2.03, 66.03], [-1.68, 66.18], [-1.53, 66.53], [-1.0, 66.75], [-0.75, 66.65], [-0.5, 66.75], [-0.25, 66.65], [0.0, 66.75], [0.25, 66.65], [0.5, 66.75], [1.03, 66.53], [1.25, 66.0], [1.15, 65.75], [1.25, 65.5], [1.03, 64.97], [0.5, 64.75], [0.25, 64.85], [0.18, 64.82], [0.03, 64.47], [-0.37, 64.3], [-0.25, 64.0], [-0.47, 63.47], [-0.82, 63.32], [-0.96, 63.0], [-0.82, 62.68], [-0.75, 62.65], [-0.5, 62.75], [-0.25, 62.65], [0.0, 62.75], [0.25, 62.65], [0.5, 62.75], [1.03, 62.53], [1.25, 62.0], [1.03, 61.47], [0.68, 61.32], [0.65, 61.25], [0.75, 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8.055262230240885]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6236486237757575, -2.2705835153324117, -1.5690275639924312]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8475846708504378, -2.6044633378461413, -1.9326647920544815]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.463970161514775, -2.116281951408089, -1.4790604466740953]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7481896064190976, -2.5758632373358927, -1.717382516517248]}}