{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:56.453889", "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-Mar-13_to_2011-Mar-15_299.5_-33.5"}, "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": 2011030000739}, "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": "March 13 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 15 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": 87673.55235239227}, "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", "Uruguay"]}, "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": ["Rio de La Plata"]}, "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": -33.5}, "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": 299.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -35.75}, "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": {"2011-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.68, -32.82], [-60.53, -32.47], [-60.0, -32.25], [-59.75, -32.35], [-59.68, -32.32], [-59.53, -31.97], [-59.0, -31.75], [-58.75, -31.85], [-58.5, -31.75], [-58.25, -31.85], [-58.0, -31.75], [-57.75, -31.85], [-57.68, -31.82], [-57.65, -31.75], [-57.75, -31.5], [-57.53, -30.97], [-57.0, -30.75], [-56.47, -30.97], [-56.25, -31.5], [-56.35, -31.75], [-56.25, -32.0], [-56.35, -32.25], [-56.25, -32.5], [-56.35, -32.75], [-56.25, -33.0], [-56.35, -33.25], [-56.25, -33.5], [-56.35, -33.75], [-56.25, -34.0], [-56.35, -34.25], [-56.25, -34.5], [-56.47, -35.03], [-56.82, -35.18], [-56.85, -35.25], [-56.75, -35.5], [-56.97, -36.03], [-57.5, -36.25], [-58.03, -36.03], [-58.25, -35.5], [-58.15, -35.25], [-58.18, -35.18], [-58.25, -35.15], [-58.5, -35.25], [-59.03, -35.03], [-59.18, -34.68], [-59.53, -34.53], [-59.68, -34.18], [-59.75, -34.15], [-60.0, -34.25], [-60.25, -34.15], [-60.32, -34.18], [-60.47, -34.53], [-61.0, -34.75], [-61.53, -34.53], [-61.75, -34.0], [-61.53, -33.47], [-61.18, -33.32], [-61.03, -32.97], [-60.68, -32.82]]]]}, "2011-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.68, -32.82], [-60.53, -32.47], [-60.0, -32.25], [-59.75, -32.35], [-59.68, -32.32], [-59.53, -31.97], [-59.0, -31.75], [-58.75, -31.85], [-58.5, -31.75], [-58.25, -31.85], [-58.0, -31.75], [-57.75, -31.85], [-57.68, -31.82], [-57.65, -31.75], [-57.75, -31.5], [-57.53, -30.97], [-57.0, -30.75], [-56.47, -30.97], [-56.25, -31.5], [-56.35, -31.75], [-56.25, -32.0], [-56.35, -32.25], [-56.25, -32.5], [-56.35, -32.75], [-56.25, -33.0], [-56.35, -33.25], [-56.25, -33.5], [-56.35, -33.75], [-56.25, -34.0], [-56.35, -34.25], [-56.25, -34.5], [-56.47, -35.03], [-56.82, -35.18], [-56.85, -35.25], [-56.75, -35.5], [-56.97, -36.03], [-57.5, -36.25], [-58.03, -36.03], [-58.25, -35.5], [-58.15, -35.25], [-58.18, -35.18], [-58.25, -35.15], [-58.5, -35.25], [-59.03, -35.03], [-59.18, -34.68], [-59.53, -34.53], [-59.68, -34.18], [-59.75, -34.15], [-60.0, -34.25], [-60.25, -34.15], [-60.32, -34.18], [-60.47, -34.53], [-61.0, -34.75], [-61.53, -34.53], [-61.75, -34.0], [-61.53, -33.47], [-61.18, -33.32], [-61.03, -32.97], [-60.68, -32.82]]]]}, "2011-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.68, -32.82], [-60.53, -32.47], [-60.0, -32.25], [-59.75, -32.35], [-59.68, -32.32], [-59.53, -31.97], [-59.0, -31.75], [-58.75, -31.85], [-58.5, -31.75], [-58.25, -31.85], [-58.0, -31.75], [-57.75, -31.85], [-57.68, -31.82], [-57.65, -31.75], [-57.75, -31.5], [-57.53, -30.97], [-57.0, -30.75], [-56.47, -30.97], [-56.25, -31.5], [-56.35, -31.75], [-56.25, -32.0], [-56.35, -32.25], [-56.25, -32.5], [-56.35, -32.75], [-56.25, -33.0], [-56.35, -33.25], [-56.25, -33.5], [-56.35, -33.75], [-56.25, -34.0], [-56.35, -34.25], [-56.25, -34.5], [-56.47, -35.03], [-56.82, -35.18], [-56.85, -35.25], [-56.75, -35.5], [-56.97, -36.03], [-57.5, -36.25], [-58.03, -36.03], [-58.25, -35.5], [-58.15, -35.25], [-58.18, -35.18], [-58.25, -35.15], [-58.5, -35.25], [-59.03, -35.03], [-59.18, -34.68], [-59.53, -34.53], [-59.68, -34.18], [-59.75, -34.15], [-60.0, -34.25], [-60.25, -34.15], [-60.32, -34.18], [-60.47, -34.53], [-61.0, -34.75], [-61.53, -34.53], [-61.75, -34.0], [-61.53, -33.47], [-61.18, -33.32], [-61.03, -32.97], [-60.68, -32.82]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.98418397015206}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.0217973593075635}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.627463361447894, 15.826837571333328, 17.466301155168082]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.044605542387217, 14.35543468523207, 15.698995458132742]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.146672166978001, -5.786175497767372, -4.132544413177318]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.98418397015206, -6.846124599602831, -5.011489173858479]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8412298113370014, -2.0783562155139377, -1.510353332724582]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.377579984689172, -2.34707336710308, -1.8231468596693725]}}