{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:02.699724", "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": "2022-Nov-15_to_2022-Nov-18_1.0_12.5"}, "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": 2022110000556}, "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": "November 15 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 18 2022"}, "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": 54393.319397090505}, "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": ["Benin", "Burkina Faso", "Niger"]}, "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": []}, "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": 12.5}, "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": 1.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "1.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 0.25}, "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": 11.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.35, 12.25], [0.25, 12.5], [0.47, 13.03], [1.0, 13.25], [1.25, 13.15], [1.5, 13.25], [1.75, 13.15], [2.0, 13.25], [2.25, 13.15], [2.5, 13.25], [2.75, 13.15], [2.82, 13.18], [2.97, 13.53], [3.5, 13.75], [3.75, 13.65], [4.0, 13.75], [4.53, 13.53], [4.75, 13.0], [4.53, 12.47], [4.0, 12.25], [3.75, 12.35], [3.68, 12.32], [3.65, 12.25], [3.75, 12.0], [3.53, 11.47], [3.18, 11.32], [3.03, 10.97], [2.5, 10.75], [2.25, 10.85], [2.0, 10.75], [1.75, 10.85], [1.5, 10.75], [1.25, 10.85], [1.0, 10.75], [0.47, 10.97], [0.25, 11.5], [0.35, 11.75], [0.25, 12.0], [0.35, 12.25]]]]}, "2022-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.03, 13.03], [0.5, 13.25], [0.75, 13.15], [1.0, 13.25], [1.25, 13.15], [1.5, 13.25], [1.75, 13.15], [2.0, 13.25], [2.25, 13.15], [2.5, 13.25], [2.75, 13.15], [2.82, 13.18], [2.97, 13.53], [3.5, 13.75], [3.75, 13.65], [4.0, 13.75], [4.53, 13.53], [4.75, 13.0], [4.53, 12.47], [4.0, 12.25], [3.75, 12.35], [3.68, 12.32], [3.65, 12.25], [3.75, 12.0], [3.53, 11.47], [3.18, 11.32], [3.03, 10.97], [2.5, 10.75], [2.25, 10.85], [2.0, 10.75], [1.75, 10.85], [1.5, 10.75], [1.25, 10.85], [1.0, 10.75], [0.75, 10.85], [0.5, 10.75], [-0.03, 10.97], [-0.25, 11.5], [-0.04, 12.0], [-0.25, 12.5], [-0.03, 13.03]]]]}, "2022-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.03, 13.03], [0.5, 13.25], [0.75, 13.15], [1.0, 13.25], [1.25, 13.15], [1.5, 13.25], [1.75, 13.15], [2.0, 13.25], [2.25, 13.15], [2.5, 13.25], [2.75, 13.15], [2.82, 13.18], [2.97, 13.53], [3.5, 13.75], [3.75, 13.65], [4.0, 13.75], [4.53, 13.53], [4.75, 13.0], [4.53, 12.47], [4.0, 12.25], [3.75, 12.35], [3.68, 12.32], [3.65, 12.25], [3.75, 12.0], [3.53, 11.47], [3.18, 11.32], [3.03, 10.97], [2.5, 10.75], [2.25, 10.85], [2.0, 10.75], [1.75, 10.85], [1.5, 10.75], [1.25, 10.85], [1.0, 10.75], [0.75, 10.85], [0.5, 10.75], [-0.03, 10.97], [-0.25, 11.5], [-0.04, 12.0], [-0.25, 12.5], [-0.03, 13.03]]]]}, "2022-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.03, 13.03], [0.5, 13.25], [1.03, 13.03], [1.25, 12.5], [1.04, 12.0], [1.25, 11.5], [1.03, 10.97], [0.5, 10.75], [-0.03, 10.97], [-0.25, 11.5], [-0.04, 12.0], [-0.25, 12.5], [-0.03, 13.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.016737085537386}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2394256487762543}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.83981656551373, 26.058842366356373, 26.46455191203239, 26.903571190225136]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.849787945294565, 25.09309555305066, 25.28289468003186, 26.30662853679354]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9177721165621904, -2.635988984379319, -2.187986460487088, -1.7065365806636805]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3651689374656257, -3.016737085537386, -2.870406366069517, -1.7716289068431479]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.562889292488259, -2.1456282514336573, -1.789856536680582, -1.3888092011497246]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7181422204494967, -2.3368664789900424, -2.1699863856997603, -1.4421324975970982]}}