{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:45.281069", "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-Feb-10_to_2011-Feb-13_291.0_-26.5"}, "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": 2011020000599}, "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": "February 10 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 13 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": 58452.23949453361}, "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": ["Argentina", "Chile"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.W.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": -26.5}, "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": 291.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 289.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 292.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.0, -23.75], [-69.47, -23.97], [-69.25, -24.5], [-69.47, -25.03], [-70.0, -25.25], [-70.53, -25.03], [-70.75, -24.5], [-70.53, -23.97], [-70.0, -23.75]]]]}, "2011-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.53, -23.97], [-70.0, -23.75], [-69.5, -23.96], [-69.0, -23.75], [-68.75, -23.85], [-68.5, -23.75], [-67.97, -23.97], [-67.82, -24.32], [-67.47, -24.47], [-67.25, -25.0], [-67.35, -25.25], [-67.25, -25.5], [-67.47, -26.03], [-67.82, -26.18], [-67.97, -26.53], [-68.32, -26.68], [-68.35, -26.75], [-68.25, -27.0], [-68.47, -27.53], [-68.82, -27.68], [-68.85, -27.75], [-68.75, -28.0], [-68.97, -28.53], [-69.5, -28.75], [-70.03, -28.53], [-70.25, -28.0], [-70.15, -27.75], [-70.25, -27.5], [-70.15, -27.25], [-70.25, -27.0], [-70.15, -26.75], [-70.25, -26.5], [-70.15, -26.25], [-70.25, -26.0], [-70.15, -25.75], [-70.18, -25.68], [-70.53, -25.53], [-70.75, -25.0], [-70.65, -24.75], [-70.75, -24.5], [-70.53, -23.97]]]]}, "2011-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.53, -23.97], [-70.0, -23.75], [-69.5, -23.96], [-69.0, -23.75], [-68.75, -23.85], [-68.5, -23.75], [-67.97, -23.97], [-67.82, -24.32], [-67.47, -24.47], [-67.25, -25.0], [-67.35, -25.25], [-67.25, -25.5], [-67.47, -26.03], [-67.82, -26.18], [-67.97, -26.53], [-68.32, -26.68], [-68.35, -26.75], [-68.25, -27.0], [-68.47, -27.53], [-68.82, -27.68], [-68.85, -27.75], [-68.75, -28.0], [-68.97, -28.53], [-69.5, -28.75], [-70.03, -28.53], [-70.25, -28.0], [-70.15, -27.75], [-70.25, -27.5], [-70.15, -27.25], [-70.25, -27.0], [-70.15, -26.75], [-70.25, -26.5], [-70.15, -26.25], [-70.25, -26.0], [-70.15, -25.75], [-70.18, -25.68], [-70.53, -25.53], [-70.75, -25.0], [-70.65, -24.75], [-70.75, -24.5], [-70.53, -23.97]]]]}, "2011-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.75, -25.0], [-70.53, -24.47], [-70.0, -24.25], [-69.75, -24.35], [-69.68, -24.32], [-69.53, -23.97], [-69.0, -23.75], [-68.75, -23.85], [-68.5, -23.75], [-67.97, -23.97], [-67.82, -24.32], [-67.47, -24.47], [-67.25, -25.0], [-67.35, -25.25], [-67.25, -25.5], [-67.47, -26.03], [-67.82, -26.18], [-67.97, -26.53], [-68.32, -26.68], [-68.35, -26.75], [-68.25, -27.0], [-68.47, -27.53], [-68.82, -27.68], [-68.85, -27.75], [-68.75, -28.0], [-68.97, -28.53], [-69.5, -28.75], [-70.03, -28.53], [-70.25, -28.0], [-70.15, -27.75], [-70.25, -27.5], [-70.15, -27.25], [-70.25, -27.0], [-70.15, -26.75], [-70.25, -26.5], [-70.15, -26.25], [-70.25, -26.0], [-70.15, -25.75], [-70.18, -25.68], [-70.53, -25.53], [-70.75, -25.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.217590457413394}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7823626596535416}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.776739561438262, 6.787454159468439, 6.044266941911246, 7.067316011039111]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.776739561438262, 1.4431450786168512, 0.0005696655834981357, 1.9996256622724218]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6609553007617706, -3.783452769465406, -4.550029233478272, -3.0812385097797064]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6609553007617706, -4.801411337316381, -6.217590457413394, -4.165862457994876]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3382939416703792, -1.953849268732978, -2.4022974253294316, -1.6451162337056977]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3382939416703792, -2.2219343447140694, -2.9004153261238943, -2.056834697751677]}}