{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:13.518127", "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-Apr-29_to_2011-May-03_293.5_-33.0"}, "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": 2011040001450}, "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": "April 29 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 123413.38383958364}, "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"]}, "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": -33.0}, "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": 293.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "293.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 296.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -31.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.15, -33.75], [-68.25, -33.5], [-68.15, -33.25], [-68.25, -33.0], [-68.15, -32.75], [-68.25, -32.5], [-68.15, -32.25], [-68.25, -32.0], [-68.03, -31.47], [-67.5, -31.25], [-66.97, -31.47], [-66.82, -31.82], [-66.75, -31.85], [-66.5, -31.75], [-66.25, -31.85], [-66.0, -31.75], [-65.75, -31.85], [-65.5, -31.75], [-65.25, -31.85], [-65.0, -31.75], [-64.47, -31.97], [-64.32, -32.32], [-63.97, -32.47], [-63.75, -33.0], [-63.85, -33.25], [-63.75, -33.5], [-63.97, -34.03], [-64.32, -34.18], [-64.47, -34.53], [-65.0, -34.75], [-65.25, -34.65], [-65.32, -34.68], [-65.35, -34.75], [-65.25, -35.0], [-65.35, -35.25], [-65.25, -35.5], [-65.35, -35.75], [-65.25, -36.0], [-65.47, -36.53], [-66.0, -36.75], [-66.5, -36.54], [-67.0, -36.75], [-67.53, -36.53], [-67.75, -36.0], [-67.65, -35.75], [-67.75, -35.5], [-67.65, -35.25], [-67.68, -35.18], [-68.03, -35.03], [-68.25, -34.5], [-68.15, -34.25], [-68.25, -34.0], [-68.15, -33.75]]]]}, "2011-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.15, -33.75], [-68.25, -33.5], [-68.15, -33.25], [-68.25, -33.0], [-68.15, -32.75], [-68.25, -32.5], [-68.15, -32.25], [-68.25, -32.0], [-68.03, -31.47], [-67.5, -31.25], [-66.97, -31.47], [-66.82, -31.82], [-66.75, -31.85], [-66.5, -31.75], [-66.25, -31.85], [-66.12, -31.8], [-66.25, -31.5], [-66.03, -30.97], [-65.5, -30.75], [-65.25, -30.85], [-65.0, -30.75], [-64.47, -30.97], [-64.25, -31.5], [-64.35, -31.75], [-64.25, -32.0], [-64.35, -32.25], [-64.32, -32.32], [-64.25, -32.35], [-64.0, -32.25], [-63.47, -32.47], [-63.25, -33.0], [-63.47, -33.53], [-63.82, -33.68], [-63.97, -34.03], [-64.32, -34.18], [-64.47, -34.53], [-65.0, -34.75], [-65.25, -34.65], [-65.32, -34.68], [-65.35, -34.75], [-65.25, -35.0], [-65.35, -35.25], [-65.25, -35.5], [-65.35, -35.75], [-65.25, -36.0], [-65.47, -36.53], [-66.0, -36.75], [-66.5, -36.54], [-67.0, -36.75], [-67.53, -36.53], [-67.75, -36.0], [-67.65, -35.75], [-67.75, -35.5], [-67.65, -35.25], [-67.68, -35.18], [-68.03, -35.03], [-68.25, -34.5], [-68.15, -34.25], [-68.25, -34.0], [-68.15, -33.75]]]]}, "2011-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.53, -32.47], [-68.18, -32.32], [-68.15, -32.25], [-68.25, -32.0], [-68.03, -31.47], [-67.5, -31.25], [-66.97, -31.47], [-66.82, -31.82], [-66.75, -31.85], [-66.5, -31.75], [-66.25, -31.85], [-66.12, -31.8], [-66.25, -31.5], [-66.03, -30.97], [-65.5, -30.75], [-65.25, -30.85], [-65.0, -30.75], [-64.47, -30.97], [-64.25, -31.5], [-64.35, -31.75], [-64.32, -31.82], [-63.97, -31.97], [-63.82, -32.32], [-63.47, -32.47], [-63.25, -33.0], [-63.47, -33.53], [-63.82, -33.68], [-63.97, -34.03], [-64.32, -34.18], [-64.47, -34.53], [-65.0, -34.75], [-65.25, -34.65], [-65.32, -34.68], [-65.35, -34.75], [-65.25, -35.0], [-65.35, -35.25], [-65.32, -35.32], [-64.97, -35.47], [-64.75, -36.0], [-64.85, -36.25], [-64.75, -36.5], [-64.97, -37.03], [-65.5, -37.25], [-66.03, -37.03], [-66.18, -36.68], [-66.5, -36.54], [-67.0, -36.75], [-67.53, -36.53], [-67.75, -36.0], [-67.65, -35.75], [-67.75, -35.5], [-67.65, -35.25], [-67.68, -35.18], [-68.03, -35.03], [-68.25, -34.5], [-68.15, -34.25], [-68.18, -34.18], [-68.53, -34.03], [-68.75, -33.5], [-68.65, -33.25], [-68.75, -33.0], [-68.53, -32.47]]]]}, "2011-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.53, -32.47], [-68.18, -32.32], [-68.15, -32.25], [-68.25, -32.0], [-68.03, -31.47], [-67.5, -31.25], [-66.97, -31.47], [-66.82, -31.82], [-66.75, -31.85], [-66.5, -31.75], [-66.25, -31.85], [-66.12, -31.8], [-66.25, -31.5], [-66.03, -30.97], [-65.5, -30.75], [-65.25, -30.85], [-65.0, -30.75], [-64.47, -30.97], [-64.25, -31.5], [-64.35, -31.75], [-64.32, -31.82], [-63.97, -31.97], [-63.82, -32.32], [-63.47, -32.47], [-63.25, -33.0], [-63.47, -33.53], [-63.82, -33.68], [-63.97, -34.03], [-64.32, -34.18], [-64.47, -34.53], [-65.0, -34.75], [-65.25, -34.65], [-65.32, -34.68], [-65.35, -34.75], [-65.25, -35.0], [-65.35, -35.25], [-65.32, -35.32], [-64.97, -35.47], [-64.75, -36.0], [-64.85, -36.25], [-64.75, -36.5], [-64.97, -37.03], [-65.5, -37.25], [-66.03, -37.03], [-66.18, -36.68], [-66.5, -36.54], [-67.0, -36.75], [-67.53, -36.53], [-67.75, -36.0], [-67.65, -35.75], [-67.75, -35.5], [-67.65, -35.25], [-67.68, -35.18], [-68.03, -35.03], [-68.25, -34.5], [-68.15, -34.25], [-68.18, -34.18], [-68.53, -34.03], [-68.75, -33.5], [-68.65, -33.25], [-68.75, -33.0], [-68.53, -32.47]]]]}, "2011-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.53, -32.47], [-68.12, -32.3], [-68.25, -32.0], [-68.03, -31.47], [-67.5, -31.25], [-66.97, -31.47], [-66.82, -31.82], [-66.75, -31.85], [-66.5, -31.75], [-66.25, -31.85], [-66.12, -31.8], [-66.25, -31.5], [-66.03, -30.97], [-65.5, -30.75], [-65.25, -30.85], [-65.0, -30.75], [-64.47, -30.97], [-64.25, -31.5], [-64.37, -31.8], [-63.97, -31.97], [-63.82, -32.32], [-63.47, -32.47], [-63.25, -33.0], [-63.47, -33.53], [-63.82, -33.68], [-63.97, -34.03], [-64.32, -34.18], [-64.47, -34.53], [-65.0, -34.75], [-65.25, -34.65], [-65.32, -34.68], [-65.35, -34.75], [-65.25, -35.0], [-65.35, -35.25], [-65.32, -35.32], [-64.97, -35.47], [-64.75, -36.0], [-64.85, -36.25], [-64.75, -36.5], [-64.97, -37.03], [-65.5, -37.25], [-66.03, -37.03], [-66.18, -36.68], [-66.5, -36.54], [-67.0, -36.75], [-67.53, -36.53], [-67.75, -36.0], [-67.54, -35.5], [-67.68, -35.18], [-68.03, -35.03], [-68.25, -34.5], [-68.12, -34.2], [-68.53, -34.03], [-68.75, -33.5], [-68.65, -33.25], [-68.75, -33.0], [-68.53, -32.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.42718256434489}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.801665151905644}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.443842201448945, 8.106268316652631, 8.355362683674628, 6.359443435953892, 8.787420753026026]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.088305636148732, 3.2074453300940036, 3.485659296520282, 3.019000120897772, 5.670074417828175]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.358222200316898, -6.5862560448519885, -6.200284081261824, -8.098755079491205, -5.595424140907364]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.42718256434489, -9.151223981179385, -8.6172353390333, -9.10597452885196, -6.591038521461769]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9696912451385613, -1.8141371991568584, -1.7306252234824988, -2.2910898909085113, -1.6067115844551463]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4317901969445965, -2.4582054090821326, -2.3024362555354414, -2.604071203211326, -1.9243796980853165]}}