{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:47.213163", "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": "2016-Dec-19_to_2016-Dec-22_307.5_-24.0"}, "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": 2016120000584}, "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": "December 19 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 22 2016"}, "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": 59249.87637236026}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": -24.0}, "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": 307.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "307.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 305.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.65, -23.75], [-54.75, -23.5], [-54.53, -22.97], [-54.18, -22.82], [-54.15, -22.75], [-54.25, -22.5], [-54.03, -21.97], [-53.5, -21.75], [-53.25, -21.85], [-53.0, -21.75], [-52.47, -21.97], [-52.25, -22.5], [-52.35, -22.75], [-52.32, -22.82], [-51.97, -22.97], [-51.82, -23.32], [-51.47, -23.47], [-51.25, -24.0], [-51.35, -24.25], [-51.25, -24.5], [-51.47, -25.03], [-51.82, -25.18], [-51.85, -25.25], [-51.75, -25.5], [-51.97, -26.03], [-52.5, -26.25], [-52.75, -26.15], [-53.0, -26.25], [-53.53, -26.03], [-53.68, -25.68], [-54.03, -25.53], [-54.18, -25.18], [-54.53, -25.03], [-54.75, -24.5], [-54.65, -24.25], [-54.75, -24.0], [-54.65, -23.75]]]]}, "2016-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.65, -23.75], [-54.75, -23.5], [-54.53, -22.97], [-54.18, -22.82], [-54.15, -22.75], [-54.25, -22.5], [-54.03, -21.97], [-53.5, -21.75], [-53.25, -21.85], [-53.0, -21.75], [-52.47, -21.97], [-52.25, -22.5], [-52.35, -22.75], [-52.32, -22.82], [-51.97, -22.97], [-51.82, -23.32], [-51.47, -23.47], [-51.25, -24.0], [-51.35, -24.25], [-51.25, -24.5], [-51.47, -25.03], [-51.82, -25.18], [-51.85, -25.25], [-51.75, -25.5], [-51.97, -26.03], [-52.5, -26.25], [-52.75, -26.15], [-53.0, -26.25], [-53.53, -26.03], [-53.68, -25.68], [-54.03, -25.53], [-54.18, -25.18], [-54.53, -25.03], [-54.75, -24.5], [-54.65, -24.25], [-54.75, -24.0], [-54.65, -23.75]]]]}, "2016-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.65, -23.75], [-54.75, -23.5], [-54.53, -22.97], [-54.18, -22.82], [-54.15, -22.75], [-54.25, -22.5], [-54.03, -21.97], [-53.5, -21.75], [-53.25, -21.85], [-53.0, -21.75], [-52.47, -21.97], [-52.25, -22.5], [-52.35, -22.75], [-52.32, -22.82], [-51.97, -22.97], [-51.82, -23.32], [-51.47, -23.47], [-51.25, -24.0], [-51.35, -24.25], [-51.25, -24.5], [-51.47, -25.03], [-51.82, -25.18], [-51.85, -25.25], [-51.75, -25.5], [-51.97, -26.03], [-52.5, -26.25], [-52.75, -26.15], [-53.0, -26.25], [-53.53, -26.03], [-53.68, -25.68], [-54.03, -25.53], [-54.18, -25.18], [-54.53, -25.03], [-54.75, -24.5], [-54.65, -24.25], [-54.75, -24.0], [-54.65, -23.75]]]]}, "2016-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.25, -24.5], [-54.03, -23.97], [-53.5, -23.75], [-53.25, -23.85], [-53.18, -23.82], [-53.03, -23.47], [-52.5, -23.25], [-52.25, -23.35], [-52.0, -23.25], [-51.47, -23.47], [-51.25, -24.0], [-51.35, -24.25], [-51.25, -24.5], [-51.47, -25.03], [-51.82, -25.18], [-51.97, -25.53], [-52.5, -25.75], [-52.75, -25.65], [-53.0, -25.75], [-53.53, -25.53], [-53.68, -25.18], [-54.03, -25.03], [-54.25, -24.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.173108539176724}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7427171073554906}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.160232499581298, 21.70426393623717, 21.800835231337715, 21.781316073082394]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.76001318659928, 20.26335798171027, 20.17612143063036, 20.921303460009142]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.5561843941993847, -2.9975335881587575, -2.972067601065167, -1.961427171293792]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8752019034042746, -3.9302674912420343, -4.173108539176724, -2.093293982261514]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4234966405739768, -1.680380501040829, -1.7531966240546175, -1.2330964599384706]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6794085594068953, -2.071763279377561, -2.4048241038069955, -1.326847488718746]}}