{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:27.057061", "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": "2017-Mar-10_to_2017-Mar-14_346.0_11.0"}, "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": 2017030000276}, "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": "March 10 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 14 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 60671.96134797426}, "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": ["Guinea", "Guinea-Bissau"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "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": 11.0}, "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": 346.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "346.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 343.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 346.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.75, 11.0], [-15.53, 11.53], [-15.0, 11.75], [-14.75, 11.65], [-14.5, 11.75], [-14.25, 11.65], [-14.0, 11.75], [-13.47, 11.53], [-13.32, 11.18], [-12.97, 11.03], [-12.75, 10.5], [-12.97, 9.97], [-13.5, 9.75], [-13.75, 9.85], [-14.0, 9.75], [-14.25, 9.85], [-14.5, 9.75], [-15.03, 9.97], [-15.18, 10.32], [-15.53, 10.47], [-15.75, 11.0]]]]}, "2017-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 11.75], [-16.75, 12.0], [-16.53, 12.53], [-16.0, 12.75], [-15.75, 12.65], [-15.5, 12.75], [-15.25, 12.65], [-15.0, 12.75], [-14.47, 12.53], [-14.32, 12.18], [-13.97, 12.03], [-13.82, 11.68], [-13.47, 11.53], [-13.32, 11.18], [-12.97, 11.03], [-12.75, 10.5], [-12.97, 9.97], [-13.5, 9.75], [-13.75, 9.85], [-13.82, 9.82], [-13.97, 9.47], [-14.5, 9.25], [-14.75, 9.35], [-15.0, 9.25], [-15.53, 9.47], [-15.68, 9.82], [-16.03, 9.97], [-16.18, 10.32], [-16.53, 10.47], [-16.75, 11.0], [-16.65, 11.25], [-16.75, 11.5], [-16.65, 11.75]]]]}, "2017-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 11.75], [-16.75, 12.0], [-16.53, 12.53], [-16.0, 12.75], [-15.75, 12.65], [-15.5, 12.75], [-15.25, 12.65], [-15.0, 12.75], [-14.47, 12.53], [-14.32, 12.18], [-14.25, 12.15], [-14.0, 12.25], [-13.47, 12.03], [-13.25, 11.5], [-13.35, 11.25], [-13.32, 11.18], [-12.97, 11.03], [-12.75, 10.5], [-12.97, 9.97], [-13.5, 9.75], [-13.75, 9.85], [-13.82, 9.82], [-13.97, 9.47], [-14.5, 9.25], [-14.75, 9.35], [-15.0, 9.25], [-15.53, 9.47], [-15.68, 9.82], [-16.03, 9.97], [-16.18, 10.32], [-16.53, 10.47], [-16.75, 11.0], [-16.65, 11.25], [-16.75, 11.5], [-16.65, 11.75]]]]}, "2017-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 11.75], [-16.75, 12.0], [-16.53, 12.53], [-16.0, 12.75], [-15.75, 12.65], [-15.5, 12.75], [-15.25, 12.65], [-15.0, 12.75], [-14.47, 12.53], [-14.32, 12.18], [-14.25, 12.15], [-14.0, 12.25], [-13.47, 12.03], [-13.25, 11.5], [-13.35, 11.25], [-13.32, 11.18], [-12.97, 11.03], [-12.75, 10.5], [-12.97, 9.97], [-13.5, 9.75], [-13.75, 9.85], [-13.82, 9.82], [-13.97, 9.47], [-14.5, 9.25], [-14.75, 9.35], [-15.0, 9.25], [-15.53, 9.47], [-15.68, 9.82], [-16.03, 9.97], [-16.18, 10.32], [-16.53, 10.47], [-16.75, 11.0], [-16.65, 11.25], [-16.75, 11.5], [-16.65, 11.75]]]]}, "2017-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.53, 12.53], [-16.0, 12.75], [-15.5, 12.54], [-15.0, 12.75], [-14.47, 12.53], [-14.32, 12.18], [-14.25, 12.15], [-14.0, 12.25], [-13.47, 12.03], [-13.25, 11.5], [-13.35, 11.25], [-13.32, 11.18], [-12.97, 11.03], [-12.75, 10.5], [-12.97, 9.97], [-13.5, 9.75], [-13.75, 9.85], [-14.0, 9.75], [-14.25, 9.85], [-14.5, 9.75], [-14.75, 9.85], [-15.0, 9.75], [-15.53, 9.97], [-15.68, 10.32], [-15.75, 10.35], [-16.0, 10.25], [-16.53, 10.47], [-16.75, 11.0], [-16.54, 11.5], [-16.75, 12.0], [-16.53, 12.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3606611049938238}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.579558124224127}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.255738001670863, 25.61553938638093, 25.3900600396517, 25.31416083716823, 26.333552303871784]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.300869528531678, 23.369607697824392, 23.071826296666302, 23.044963240898994, 23.901998039324724]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3856496938894338, -1.3834101579858349, -1.7204841357684557, -1.8383755339911432, -1.3725843585113808]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5506610053778331, -1.790216427232508, -2.2049010001608167, -2.3606611049938238, -1.7789777273737855]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5323336190087173, -1.427937935548919, -1.8637057791010605, -1.9929134506356747, -1.4582261919309045]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9461613032794227, -1.594360297816794, -2.4262969849617226, -2.564364579092838, -1.7838326484657459]}}