{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:37.583276", "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": "2011-Oct-24_to_2011-Oct-27_3.0_26.5"}, "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": 2011100001093}, "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": "October 24 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 27 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 131046.40603276782}, "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": ["Algeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 26.5}, "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": 3.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "3.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -2.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 4.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.53, 25.03], [-2.18, 25.18], [-2.03, 25.53], [-1.68, 25.68], 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25.53], [-1.68, 25.68], [-1.53, 26.03], [-1.0, 26.25], [-0.7, 26.13], [-0.53, 26.53], [-0.18, 26.68], [-0.03, 27.03], [0.5, 27.25], [0.75, 27.15], [1.0, 27.25], [1.25, 27.15], [1.5, 27.25], [1.75, 27.15], [2.0, 27.25], [2.25, 27.15], [2.32, 27.18], [2.47, 27.53], [3.0, 27.75], [3.25, 27.65], [3.5, 27.75], [3.75, 27.65], [4.0, 27.75], [4.53, 27.53], [4.75, 27.0], [4.65, 26.75], [4.75, 26.5], [4.54, 26.0], [4.75, 25.5], [4.65, 25.25], [4.75, 25.0], [4.53, 24.47], [4.0, 24.25], [3.75, 24.35], [3.5, 24.25], [3.25, 24.35], [3.18, 24.32], [3.03, 23.97], [2.5, 23.75], [2.25, 23.85], [2.0, 23.75], [1.47, 23.97], [1.3, 24.38], [1.0, 24.25], [0.75, 24.35], [0.68, 24.32], [0.53, 23.97], [0.0, 23.75], [-0.25, 23.85], [-0.5, 23.75], [-0.75, 23.85], [-1.0, 23.75], [-1.25, 23.85], [-1.32, 23.82], [-1.47, 23.47], [-2.0, 23.25], [-2.53, 23.47], [-2.75, 24.0], [-2.65, 24.25], [-2.75, 24.5], [-2.53, 25.03]]]]}, "2011-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.53, 25.03], 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21.28916717836927, 22.95176982063441]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.9374392241976635, -5.19481427933123, -3.5668363276082755, -3.3169993035733456]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.131767388829246, -6.486935517530696, -5.2031246924565835, -4.224747961413243]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9127407517465376, -2.0936941905380855, -1.5047017909499776, -1.4528971323884663]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.409799283597839, -2.539290356465373, -2.0600643476212515, -1.745957721936509]}}