{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:29.885094", "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": "2014-Jan-17_to_2014-Jan-19_347.0_7.0"}, "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": 2014010000738}, "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": "January 17 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 19 2014"}, "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": 138516.58835269907}, "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": ["Sierra Leone"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Atlantic-Ocean", "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": 7.0}, "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": 347.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "347.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 340.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 348.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 7.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.25, 4.0], [-19.03, 4.53], [-18.5, 4.75], [-18.25, 4.65], [-18.18, 4.68], [-18.03, 5.03], [-17.5, 5.25], [-17.25, 5.15], [-17.18, 5.18], [-17.03, 5.53], [-16.68, 5.68], [-16.53, 6.03], [-16.0, 6.25], [-15.75, 6.15], [-15.5, 6.25], [-15.0, 6.04], [-14.68, 6.18], [-14.53, 6.53], [-14.18, 6.68], [-14.03, 7.03], [-13.68, 7.18], [-13.53, 7.53], [-13.18, 7.68], [-13.03, 8.03], [-12.5, 8.25], [-11.97, 8.03], [-11.75, 7.5], [-11.87, 7.2], [-11.47, 7.03], [-11.32, 6.68], [-10.97, 6.53], [-10.75, 6.0], [-10.97, 5.47], [-11.32, 5.32], [-11.47, 4.97], [-11.82, 4.82], [-11.97, 4.47], [-12.32, 4.32], [-12.47, 3.97], [-13.0, 3.75], [-13.25, 3.85], [-13.5, 3.75], [-13.75, 3.85], [-14.0, 3.75], [-14.5, 3.96], [-15.0, 3.75], [-15.25, 3.85], [-15.5, 3.75], [-15.75, 3.85], [-16.0, 3.75], [-16.25, 3.85], [-16.32, 3.82], [-16.47, 3.47], [-17.0, 3.25], [-17.25, 3.35], [-17.32, 3.32], [-17.47, 2.97], [-18.0, 2.75], [-18.25, 2.85], [-18.32, 2.82], [-18.47, 2.47], [-19.0, 2.25], [-19.53, 2.47], [-19.75, 3.0], [-19.53, 3.53], [-19.18, 3.68], [-19.15, 3.75], [-19.25, 4.0]]]]}, "2014-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.25, 4.0], [-19.03, 4.53], [-18.5, 4.75], [-18.25, 4.65], [-18.18, 4.68], [-18.03, 5.03], [-17.5, 5.25], [-17.25, 5.15], [-17.18, 5.18], [-17.03, 5.53], [-16.68, 5.68], [-16.53, 6.03], [-16.0, 6.25], [-15.75, 6.15], [-15.5, 6.25], [-15.0, 6.04], [-14.68, 6.18], [-14.53, 6.53], [-14.18, 6.68], [-14.03, 7.03], [-13.68, 7.18], [-13.53, 7.53], [-13.18, 7.68], [-13.03, 8.03], [-12.5, 8.25], [-11.97, 8.03], [-11.75, 7.5], [-11.87, 7.2], [-11.47, 7.03], [-11.32, 6.68], [-10.97, 6.53], [-10.75, 6.0], [-10.97, 5.47], [-11.32, 5.32], [-11.47, 4.97], [-11.82, 4.82], [-11.97, 4.47], [-12.32, 4.32], [-12.47, 3.97], [-13.0, 3.75], [-13.25, 3.85], [-13.5, 3.75], [-13.75, 3.85], [-14.0, 3.75], [-14.5, 3.96], [-15.0, 3.75], [-15.25, 3.85], [-15.5, 3.75], [-15.75, 3.85], [-16.0, 3.75], [-16.25, 3.85], [-16.32, 3.82], [-16.47, 3.47], [-17.0, 3.25], [-17.25, 3.35], [-17.32, 3.32], [-17.47, 2.97], [-18.0, 2.75], [-18.25, 2.85], [-18.32, 2.82], [-18.47, 2.47], [-19.0, 2.25], [-19.53, 2.47], [-19.75, 3.0], [-19.53, 3.53], [-19.18, 3.68], [-19.15, 3.75], [-19.25, 4.0]]]]}, "2014-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-19.25, 4.0], [-19.03, 4.53], [-18.5, 4.75], [-18.25, 4.65], [-18.18, 4.68], [-18.03, 5.03], [-17.5, 5.25], [-17.25, 5.15], [-17.18, 5.18], [-17.03, 5.53], [-16.68, 5.68], [-16.53, 6.03], [-16.0, 6.25], [-15.75, 6.15], [-15.5, 6.25], [-15.0, 6.04], [-14.68, 6.18], [-14.53, 6.53], [-14.18, 6.68], [-14.03, 7.03], [-13.68, 7.18], [-13.53, 7.53], [-13.18, 7.68], [-13.03, 8.03], [-12.5, 8.25], [-11.97, 8.03], [-11.75, 7.5], [-11.87, 7.2], [-11.47, 7.03], [-11.32, 6.68], [-10.97, 6.53], [-10.75, 6.0], [-10.97, 5.47], [-11.32, 5.32], [-11.47, 4.97], [-11.82, 4.82], [-11.97, 4.47], [-12.32, 4.32], [-12.47, 3.97], [-13.0, 3.75], [-13.25, 3.85], [-13.5, 3.75], [-13.75, 3.85], [-14.0, 3.75], [-14.5, 3.96], [-15.0, 3.75], [-15.25, 3.85], [-15.5, 3.75], [-15.75, 3.85], [-16.0, 3.75], [-16.25, 3.85], [-16.32, 3.82], [-16.47, 3.47], [-17.0, 3.25], [-17.25, 3.35], [-17.32, 3.32], [-17.47, 2.97], [-18.0, 2.75], [-18.25, 2.85], [-18.32, 2.82], [-18.47, 2.47], [-19.0, 2.25], [-19.53, 2.47], [-19.75, 3.0], [-19.53, 3.53], [-19.18, 3.68], [-19.15, 3.75], [-19.25, 4.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.8524499297894295}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.117600343029558}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.63204325809943, 25.44385157252566, 25.654913829428267]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.137614466955426, 24.98970981362322, 24.970259722030903]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0716392665784218, -1.2394767152985866, -1.0416850472116659]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3985804274825568, -1.8524499297894295, -1.265186885099581]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.683311981663681, -1.9604967282310222, -1.610658731707703]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.519468244844416, -3.725137594454679, -1.915453485391552]}}