{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:25.059223", "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": "2016-Oct-11_to_2016-Oct-16_342.5_20.0"}, "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": 2016100000379}, "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 11 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 16 2016"}, "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": 75555.37899563673}, "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": ["Mauritania", "Morocco"]}, "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": ["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": 20.0}, "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": 342.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "342.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 341.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 343.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.5, 23.75], [-15.97, 23.53], [-15.75, 23.0], [-15.97, 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[-17.15, 22.75], [-17.25, 23.0], [-17.03, 23.53], [-16.5, 23.75], [-15.97, 23.53], [-15.75, 23.0], [-15.85, 22.75], [-15.75, 22.5], [-15.85, 22.25], [-15.75, 22.0], [-15.96, 21.5], [-15.75, 21.0], [-15.97, 20.47], [-16.32, 20.32], [-16.35, 20.25], [-16.25, 20.0], [-16.35, 19.75], [-16.25, 19.5], [-16.35, 19.25], [-16.32, 19.18], [-15.97, 19.03], [-15.75, 18.5], [-15.85, 18.25], [-15.75, 18.0], [-15.97, 17.47], [-16.5, 17.25], [-17.03, 17.47], [-17.18, 17.82], [-17.25, 17.85], [-17.5, 17.75], [-18.03, 17.97], [-18.18, 18.32], [-18.25, 18.35], [-18.5, 18.25], [-19.03, 18.47], [-19.25, 19.0], [-19.15, 19.25], [-19.25, 19.5], [-19.03, 20.03]]]]}, "2016-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.03, 20.03], [-18.68, 20.18], [-18.53, 20.53], [-18.18, 20.68], [-18.15, 20.75], [-18.25, 21.0], [-18.03, 21.53], [-17.68, 21.68], [-17.53, 22.03], [-17.18, 22.18], [-17.15, 22.25], [-17.25, 22.5], [-17.03, 23.03], [-16.5, 23.25], [-15.97, 23.03], [-15.75, 22.5], [-15.85, 22.25], [-15.75, 22.0], [-15.96, 21.5], [-15.75, 21.0], [-15.97, 20.47], [-16.32, 20.32], [-16.35, 20.25], [-16.25, 20.0], [-16.35, 19.75], [-16.32, 19.68], [-15.97, 19.53], [-15.75, 19.0], [-15.85, 18.75], [-15.75, 18.5], [-15.85, 18.25], [-15.75, 18.0], [-15.85, 17.75], [-15.75, 17.5], [-15.97, 16.97], [-16.5, 16.75], [-17.03, 16.97], [-17.25, 17.5], [-17.15, 17.75], [-17.18, 17.82], [-17.25, 17.85], [-17.5, 17.75], [-18.03, 17.97], [-18.18, 18.32], [-18.25, 18.35], [-18.5, 18.25], [-19.03, 18.47], [-19.25, 19.0], [-19.15, 19.25], [-19.25, 19.5], [-19.03, 20.03]]]]}, "2016-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.03, 20.03], [-18.68, 20.18], [-18.53, 20.53], [-18.18, 20.68], [-18.15, 20.75], [-18.25, 21.0], [-18.03, 21.53], [-17.68, 21.68], [-17.53, 22.03], [-17.0, 22.25], [-16.47, 22.03], [-16.32, 21.68], [-15.97, 21.53], [-15.75, 21.0], [-15.97, 20.47], [-16.32, 20.32], [-16.35, 20.25], [-16.25, 20.0], [-16.35, 19.75], [-16.32, 19.68], 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"description": "Mean t2m anomaly over entire duration", "value": -2.449597346644139}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.86670755651761, 20.492131150262708, 21.820195007533755, 22.005877524746722, 22.10954410401672, 24.23323165392719]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.86670755651761, 19.645513752933596, 19.513794896422723, 19.733815258077982, 19.66311538186602, 23.619228164668016]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3806316250175996, -2.1792825622769345, -2.4780462887368224, -2.554570831359754, -2.472172693485032, -2.0170096000149726]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3806316250175996, -3.2546449507528905, 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