{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:22.894190", "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": "2024-Oct-27_to_2024-Oct-29_351.5_23.0"}, "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": 2024100000452}, "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 27 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 29 2024"}, "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": 190048.44423549072}, "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": []}, "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": 23.0}, "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": 351.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "351.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 347.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 353.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.03, 22.53], [-12.68, 22.68], [-12.53, 23.03], [-12.12, 23.2], [-12.25, 23.5], [-12.15, 23.75], [-12.18, 23.82], [-12.25, 23.85], [-12.5, 23.75], [-13.03, 23.97], [-13.25, 24.5], [-13.03, 25.03], [-12.68, 25.18], [-12.53, 25.53], [-12.0, 25.75], [-11.75, 25.65], [-11.68, 25.68], [-11.53, 26.03], [-11.18, 26.18], [-11.03, 26.53], [-10.5, 26.75], [-10.25, 26.65], [-10.0, 26.75], [-9.47, 26.53], [-9.25, 26.0], [-9.35, 25.75], [-9.25, 25.5], [-9.37, 25.2], [-9.25, 25.15], [-9.0, 25.25], [-8.75, 25.15], [-8.5, 25.25], [-8.25, 25.15], [-8.0, 25.25], [-7.75, 25.15], [-7.5, 25.25], [-7.25, 25.15], [-7.0, 25.25], [-6.47, 25.03], [-6.25, 24.5], [-6.47, 23.97], [-6.82, 23.82], [-6.97, 23.47], [-7.32, 23.32], [-7.47, 22.97], [-7.82, 22.82], [-7.85, 22.75], [-7.75, 22.5], [-7.97, 21.97], [-8.32, 21.82], [-8.47, 21.47], [-9.0, 21.25], [-9.25, 21.35], [-9.32, 21.32], [-9.47, 20.97], [-10.0, 20.75], [-10.25, 20.85], [-10.5, 20.75], [-10.75, 20.85], [-10.82, 20.82], [-10.97, 20.47], [-11.5, 20.25], [-11.75, 20.35], [-12.0, 20.25], [-12.25, 20.35], [-12.5, 20.25], [-13.03, 20.47], [-13.25, 21.0], [-13.04, 21.5], [-13.25, 22.0], [-13.03, 22.53]]]]}, "2024-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.03, 22.53], [-12.68, 22.68], [-12.53, 23.03], [-12.12, 23.2], [-12.25, 23.5], [-12.15, 23.75], [-12.18, 23.82], [-12.25, 23.85], [-12.5, 23.75], [-13.03, 23.97], [-13.25, 24.5], [-13.03, 25.03], [-12.68, 25.18], [-12.53, 25.53], [-12.0, 25.75], [-11.75, 25.65], [-11.68, 25.68], [-11.53, 26.03], [-11.18, 26.18], [-11.03, 26.53], [-10.5, 26.75], [-10.25, 26.65], [-10.0, 26.75], [-9.47, 26.53], [-9.25, 26.0], [-9.35, 25.75], [-9.25, 25.5], [-9.37, 25.2], [-9.25, 25.15], [-9.0, 25.25], [-8.75, 25.15], [-8.5, 25.25], [-8.25, 25.15], [-8.0, 25.25], [-7.75, 25.15], [-7.5, 25.25], [-7.25, 25.15], [-7.0, 25.25], [-6.47, 25.03], [-6.25, 24.5], [-6.47, 23.97], [-6.82, 23.82], [-6.97, 23.47], [-7.32, 23.32], [-7.47, 22.97], [-7.82, 22.82], [-7.85, 22.75], [-7.75, 22.5], [-7.97, 21.97], [-8.32, 21.82], [-8.47, 21.47], [-9.0, 21.25], [-9.25, 21.35], [-9.32, 21.32], [-9.47, 20.97], [-10.0, 20.75], [-10.25, 20.85], [-10.5, 20.75], [-10.75, 20.85], [-10.82, 20.82], [-10.97, 20.47], [-11.5, 20.25], [-11.75, 20.35], [-12.0, 20.25], [-12.25, 20.35], [-12.5, 20.25], [-13.03, 20.47], [-13.25, 21.0], [-13.04, 21.5], [-13.25, 22.0], [-13.03, 22.53]]]]}, "2024-10-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.03, 22.53], [-12.68, 22.68], [-12.53, 23.03], [-12.12, 23.2], [-12.25, 23.5], [-12.15, 23.75], [-12.18, 23.82], [-12.25, 23.85], [-12.5, 23.75], [-13.03, 23.97], [-13.25, 24.5], [-13.03, 25.03], [-12.68, 25.18], [-12.53, 25.53], [-12.0, 25.75], [-11.75, 25.65], [-11.68, 25.68], [-11.53, 26.03], [-11.18, 26.18], [-11.03, 26.53], [-10.5, 26.75], [-10.25, 26.65], [-10.0, 26.75], [-9.47, 26.53], [-9.25, 26.0], [-9.35, 25.75], [-9.25, 25.5], [-9.37, 25.2], [-9.25, 25.15], [-9.0, 25.25], [-8.75, 25.15], [-8.5, 25.25], [-8.25, 25.15], [-8.0, 25.25], [-7.75, 25.15], [-7.5, 25.25], [-7.25, 25.15], [-7.0, 25.25], [-6.47, 25.03], [-6.25, 24.5], [-6.47, 23.97], [-6.82, 23.82], [-6.97, 23.47], [-7.32, 23.32], [-7.47, 22.97], [-7.82, 22.82], [-7.85, 22.75], [-7.75, 22.5], [-7.97, 21.97], [-8.32, 21.82], [-8.47, 21.47], [-9.0, 21.25], [-9.25, 21.35], [-9.32, 21.32], [-9.47, 20.97], [-10.0, 20.75], [-10.25, 20.85], [-10.5, 20.75], [-10.75, 20.85], [-10.82, 20.82], [-10.97, 20.47], [-11.5, 20.25], [-11.75, 20.35], [-12.0, 20.25], [-12.25, 20.35], [-12.5, 20.25], [-13.03, 20.47], [-13.25, 21.0], [-13.04, 21.5], [-13.25, 22.0], [-13.03, 22.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.72611571358766}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.594723747177077}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.199914304059575, 20.367279496833532, 20.49486164833189]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.94065882364913, 17.96011123657229, 17.255816396077478]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.247145464547012, -4.921613124946515, -4.615412652037701]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.6976729319769674, -5.72611571358766, -5.193056511207885]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5505298790635398, -1.8030104413225534, -1.673247954625097]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7530102154353755, -2.2341925691653755, -1.9112851297045557]}}