{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:03.546969", "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": "2011-Dec-01_to_2011-Dec-03_310.5_-30.0"}, "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": 2011120000033}, "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 01 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 03 2011"}, "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": 67157.15804509273}, "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": ["South 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": -30.0}, "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": 310.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "310.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 309.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 312.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.75, -30.0], [-50.65, -29.75], [-50.75, -29.5], [-50.53, -28.97], [-50.0, -28.75], [-49.75, -28.85], [-49.68, -28.82], [-49.53, -28.47], [-49.18, -28.32], [-49.03, -27.97], [-48.68, -27.82], [-48.53, -27.47], [-48.0, -27.25], [-47.75, -27.35], [-47.5, -27.25], [-46.97, -27.47], [-46.75, -28.0], [-46.85, -28.25], [-46.75, -28.5], [-46.97, -29.03], [-47.32, -29.18], [-47.35, -29.25], [-47.25, -29.5], [-47.35, -29.75], [-47.25, -30.0], [-47.46, -30.5], [-47.25, -31.0], [-47.47, -31.53], [-48.0, -31.75], [-48.53, -31.53], [-48.68, -31.18], [-48.75, -31.15], [-48.82, -31.18], [-48.97, -31.53], [-49.5, -31.75], [-50.0, -31.54], [-50.5, -31.75], [-51.03, -31.53], [-51.25, -31.0], [-51.03, -30.47], [-50.68, -30.32], [-50.65, -30.25], [-50.75, -30.0]]]]}, "2011-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.75, -30.0], [-50.65, -29.75], [-50.75, -29.5], [-50.53, -28.97], [-50.0, -28.75], [-49.75, -28.85], [-49.68, -28.82], [-49.53, -28.47], [-49.18, -28.32], [-49.03, -27.97], [-48.68, -27.82], [-48.53, -27.47], [-48.0, -27.25], [-47.75, -27.35], [-47.5, -27.25], [-46.97, -27.47], [-46.75, -28.0], [-46.85, -28.25], [-46.75, -28.5], [-46.97, -29.03], [-47.32, -29.18], [-47.35, -29.25], [-47.25, -29.5], [-47.35, -29.75], [-47.25, -30.0], [-47.46, -30.5], [-47.25, -31.0], [-47.47, -31.53], [-48.0, -31.75], [-48.53, -31.53], [-48.68, -31.18], [-48.75, -31.15], [-48.82, -31.18], [-48.97, -31.53], [-49.5, -31.75], [-50.0, -31.54], [-50.5, -31.75], [-51.03, -31.53], [-51.25, -31.0], [-51.03, -30.47], [-50.68, -30.32], [-50.65, -30.25], [-50.75, -30.0]]]]}, "2011-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.75, -30.0], [-50.65, -29.75], [-50.75, -29.5], [-50.53, -28.97], [-50.0, -28.75], [-49.75, -28.85], [-49.68, -28.82], [-49.53, -28.47], [-49.18, -28.32], [-49.03, -27.97], [-48.68, -27.82], [-48.53, -27.47], [-48.0, -27.25], [-47.75, -27.35], [-47.5, -27.25], [-46.97, -27.47], [-46.75, -28.0], [-46.85, -28.25], [-46.75, -28.5], [-46.97, -29.03], [-47.32, -29.18], [-47.35, -29.25], [-47.25, -29.5], [-47.35, -29.75], [-47.25, -30.0], [-47.46, -30.5], [-47.25, -31.0], [-47.47, -31.53], [-48.0, -31.75], [-48.53, -31.53], [-48.68, -31.18], [-48.75, -31.15], [-48.82, -31.18], [-48.97, -31.53], [-49.5, -31.75], [-50.0, -31.54], [-50.5, -31.75], [-51.03, -31.53], [-51.25, -31.0], [-51.03, -30.47], [-50.68, -30.32], [-50.65, -30.25], [-50.75, -30.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.585372150996136}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.101129980333184}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.52362609890912, 19.253204827374134, 19.805690392852625]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.586828476432686, 16.45771348141102, 17.681840980470042]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.056161254476783, -2.4005786970625853, -1.8466499894601838]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.903036764280955, -3.585372150996136, -2.347552158874805]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8530903273066313, -2.1422896299170726, -1.64502196503]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3276175852086993, -2.4795938237679316, -2.117861300446089]}}