{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:48.950080", "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-Nov-13_to_2011-Nov-16_308.0_-1.0"}, "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": 2011110000720}, "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 13 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 16 2011"}, "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": 67871.0152070848}, "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": ["N.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": -1.0}, "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": 308.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "308.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 304.75}, "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": -5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, -4.47], [-55.18, -4.32], [-55.15, -4.25], [-55.25, -4.0], [-55.15, -3.75], [-55.25, -3.5], [-55.15, -3.25], [-55.25, -3.0], [-55.03, -2.47], [-54.68, -2.32], [-54.53, -1.97], [-54.0, -1.75], [-53.7, -1.88], [-53.65, -1.75], [-53.75, -1.5], [-53.53, -0.97], [-53.0, -0.75], [-52.75, -0.85], [-52.5, -0.75], [-51.97, -0.97], [-51.82, -1.32], [-51.47, -1.47], [-51.25, -2.0], [-51.47, -2.53], [-52.0, -2.75], [-52.3, -2.62], [-52.47, -3.03], [-52.82, -3.18], [-52.85, -3.25], [-52.75, -3.5], [-52.96, -4.0], [-52.75, -4.5], [-52.97, -5.03], [-53.32, -5.18], [-53.47, -5.53], [-53.82, -5.68], [-53.97, -6.03], [-54.5, -6.25], [-54.75, -6.15], [-55.0, -6.25], [-55.53, -6.03], [-55.75, -5.5], [-55.65, -5.25], [-55.75, -5.0], [-55.53, -4.47]]]]}, "2011-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, -4.47], [-55.18, -4.32], [-55.15, -4.25], [-55.25, -4.0], [-55.15, -3.75], [-55.25, -3.5], [-55.15, -3.25], [-55.25, -3.0], [-55.03, -2.47], [-54.68, -2.32], [-54.53, -1.97], [-54.0, -1.75], [-53.7, -1.88], [-53.65, -1.75], [-53.75, -1.5], [-53.53, -0.97], [-53.0, -0.75], [-52.75, -0.85], [-52.68, -0.82], [-52.65, -0.75], [-52.75, -0.5], [-52.53, 0.03], [-52.0, 0.25], [-51.47, 0.03], [-51.25, -0.5], [-51.35, -0.75], [-51.25, -1.0], [-51.46, -1.5], [-51.25, -2.0], [-51.47, -2.53], [-52.0, -2.75], [-52.3, -2.62], [-52.47, -3.03], [-52.82, -3.18], [-52.85, -3.25], [-52.75, -3.5], [-52.96, -4.0], [-52.75, -4.5], [-52.97, -5.03], [-53.32, -5.18], [-53.47, -5.53], [-53.82, -5.68], [-53.97, -6.03], [-54.5, -6.25], [-54.75, -6.15], [-55.0, -6.25], [-55.53, -6.03], [-55.75, -5.5], [-55.65, -5.25], [-55.75, -5.0], [-55.53, -4.47]]]]}, "2011-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.53, -4.47], [-55.18, -4.32], [-55.15, -4.25], [-55.25, -4.0], [-55.15, -3.75], [-55.25, -3.5], [-55.15, -3.25], [-55.25, -3.0], [-55.03, -2.47], [-54.68, -2.32], [-54.53, -1.97], [-54.0, -1.75], [-53.7, -1.88], [-53.65, -1.75], [-53.75, -1.5], [-53.53, -0.97], [-53.0, -0.75], [-52.75, -0.85], [-52.68, -0.82], [-52.65, -0.75], [-52.75, -0.5], [-52.53, 0.03], [-52.0, 0.25], [-51.47, 0.03], [-51.25, -0.5], [-51.35, -0.75], [-51.25, -1.0], [-51.46, -1.5], [-51.25, -2.0], [-51.47, -2.53], [-52.0, -2.75], [-52.3, -2.62], [-52.47, -3.03], [-52.82, -3.18], [-52.85, -3.25], [-52.75, -3.5], [-52.96, -4.0], [-52.75, -4.5], [-52.97, -5.03], [-53.32, -5.18], [-53.47, -5.53], [-53.82, -5.68], [-53.97, -6.03], [-54.5, -6.25], [-54.75, -6.15], [-55.0, -6.25], [-55.53, -6.03], [-55.75, -5.5], [-55.65, -5.25], [-55.75, -5.0], [-55.53, -4.47]]]]}, "2011-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.53, 0.03], [-52.0, 0.25], [-51.47, 0.03], [-51.25, -0.5], [-51.35, -0.75], [-51.25, -1.0], [-51.47, -1.53], [-52.0, -1.75], [-52.53, -1.53], [-52.75, -1.0], [-52.65, -0.75], [-52.75, -0.5], [-52.53, 0.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.206308652814755}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.429586956839639}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.535711771038166, 23.8713193672873, 25.03307909057702, 27.484910463534334]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.302173581896454, 22.992055936701092, 23.68943139276871, 27.43680067961293]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6465631332685604, -3.4396501443809715, -2.2389734610378427, -1.2458785834155321]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8733540863785834, -4.206308652814755, -3.1387096746846055, -1.3685341933957034]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5126450362860808, -3.2068817413027166, -2.1020993478117416, -1.403987926025576]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7133676505116646, -4.046679498912099, -3.351831751152642, -1.537905657690635]}}