{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:50.006174", "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": "2010-Jun-01_to_2010-Jun-04_345.0_18.5"}, "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": 2010060000080}, "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": "June 01 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 2010"}, "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": 123255.20972590805}, "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", "Senegal"]}, "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": 18.5}, "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": 345.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "345.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 343.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 347.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.25, 20.5], [-17.03, 21.03], [-16.5, 21.25], [-16.25, 21.15], [-16.0, 21.25], [-15.47, 21.03], [-15.32, 20.68], [-14.97, 20.53], [-14.75, 20.0], [-14.85, 19.75], [-14.82, 19.68], [-14.47, 19.53], [-14.32, 19.18], [-13.97, 19.03], [-13.82, 18.68], [-13.47, 18.53], [-13.25, 18.0], [-13.35, 17.75], [-13.25, 17.5], [-13.47, 16.97], [-14.0, 16.75], [-14.25, 16.85], [-14.32, 16.82], [-14.47, 16.47], [-15.0, 16.25], [-15.25, 16.35], [-15.5, 16.25], [-16.03, 16.47], [-16.25, 17.0], [-16.15, 17.25], [-16.18, 17.32], [-16.53, 17.47], [-16.75, 18.0], [-16.65, 18.25], [-16.75, 18.5], [-16.65, 18.75], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75], [-16.68, 19.82], [-17.03, 19.97], [-17.25, 20.5]]]]}, "2010-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.25, 20.5], [-17.03, 21.03], [-16.5, 21.25], [-16.25, 21.15], [-16.0, 21.25], [-15.47, 21.03], [-15.32, 20.68], [-15.25, 20.65], [-15.0, 20.75], [-14.47, 20.53], [-14.32, 20.18], [-13.97, 20.03], [-13.82, 19.68], [-13.47, 19.53], [-13.32, 19.18], [-12.97, 19.03], [-12.82, 18.68], [-12.47, 18.53], [-12.25, 18.0], [-12.35, 17.75], [-12.25, 17.5], [-12.35, 17.25], [-12.25, 17.0], [-12.47, 16.47], [-12.82, 16.32], [-12.97, 15.97], [-13.5, 15.75], [-14.0, 15.96], [-14.5, 15.75], [-14.75, 15.85], [-15.0, 15.75], [-15.53, 15.97], [-15.68, 16.32], [-16.03, 16.47], [-16.25, 17.0], [-16.15, 17.25], [-16.18, 17.32], [-16.53, 17.47], [-16.75, 18.0], [-16.65, 18.25], [-16.75, 18.5], [-16.65, 18.75], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75], [-16.68, 19.82], [-17.03, 19.97], [-17.25, 20.5]]]]}, "2010-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-17.25, 20.5], [-17.03, 21.03], [-16.5, 21.25], [-16.25, 21.15], [-16.0, 21.25], [-15.47, 21.03], [-15.32, 20.68], [-15.25, 20.65], [-15.0, 20.75], [-14.47, 20.53], [-14.32, 20.18], [-13.97, 20.03], [-13.82, 19.68], [-13.47, 19.53], [-13.32, 19.18], [-12.97, 19.03], [-12.82, 18.68], [-12.47, 18.53], [-12.25, 18.0], [-12.35, 17.75], [-12.25, 17.5], [-12.35, 17.25], [-12.25, 17.0], [-12.47, 16.47], [-12.82, 16.32], [-12.97, 15.97], [-13.5, 15.75], [-14.0, 15.96], [-14.5, 15.75], [-14.75, 15.85], [-15.0, 15.75], [-15.53, 15.97], [-15.68, 16.32], [-16.03, 16.47], [-16.25, 17.0], [-16.15, 17.25], [-16.18, 17.32], [-16.53, 17.47], [-16.75, 18.0], [-16.65, 18.25], [-16.75, 18.5], [-16.65, 18.75], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75], [-16.68, 19.82], [-17.03, 19.97], [-17.25, 20.5]]]]}, "2010-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.65, 18.75], [-16.75, 19.0], [-16.65, 19.25], [-16.75, 19.5], [-16.65, 19.75], [-16.75, 20.0], [-16.53, 20.53], [-16.0, 20.75], [-15.75, 20.65], [-15.5, 20.75], [-15.25, 20.65], [-15.0, 20.75], [-14.47, 20.53], [-14.32, 20.18], [-13.97, 20.03], [-13.82, 19.68], [-13.47, 19.53], [-13.32, 19.18], [-12.97, 19.03], [-12.82, 18.68], [-12.47, 18.53], [-12.25, 18.0], [-12.35, 17.75], [-12.25, 17.5], [-12.35, 17.25], [-12.25, 17.0], [-12.47, 16.47], [-12.82, 16.32], [-12.97, 15.97], [-13.5, 15.75], [-14.0, 15.96], [-14.5, 15.75], [-14.75, 15.85], [-15.0, 15.75], [-15.53, 15.97], [-15.75, 16.5], [-15.65, 16.75], [-15.68, 16.82], [-16.03, 16.97], [-16.18, 17.32], [-16.53, 17.47], [-16.75, 18.0], [-16.65, 18.25], [-16.75, 18.5], [-16.65, 18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.889027497788561}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.697738418192294}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.28086246932861, 27.669289361661413, 27.679188352524193, 28.55630257707452]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.800198064693916, 20.587321574121404, 20.919564199298918, 22.1349510079109]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.850339504295422, -4.87839087497772, -4.809183784931752, -4.289263170640493]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.889027497788561, -6.5906087966236555, -6.610353309339018, -5.906582184396882]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.800159773118757, -1.9886987994951313, -1.9631765041114082, -1.7325684527611105]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2358498608118875, -2.5330274643572435, -2.5077131587383765, -2.118429112381641]}}