{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:25.359537", "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": "2015-Dec-18_to_2015-Dec-20_293.5_-29.0"}, "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": 2015120000469}, "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 18 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 20 2015"}, "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": 104962.36546477134}, "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": -29.0}, "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": 295.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -30.5], [-68.53, -29.97], [-68.18, -29.82], 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-31.75], [-67.25, -31.65], [-67.5, -31.75], [-68.03, -31.53], [-68.18, -31.18], [-68.53, -31.03], [-68.75, -30.5]]]]}, "2015-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -30.5], [-68.53, -29.97], [-68.18, -29.82], [-68.15, -29.75], [-68.25, -29.5], [-68.04, -29.0], [-68.25, -28.5], [-68.15, -28.25], [-68.25, -28.0], [-68.03, -27.47], [-67.5, -27.25], [-67.25, -27.35], [-67.18, -27.32], [-67.03, -26.97], [-66.5, -26.75], [-65.97, -26.97], [-65.8, -27.38], [-65.68, -27.32], [-65.65, -27.25], [-65.75, -27.0], [-65.53, -26.47], [-65.18, -26.32], [-65.03, -25.97], [-64.5, -25.75], [-63.97, -25.97], [-63.75, -26.5], [-63.97, -27.03], [-64.32, -27.18], [-64.35, -27.25], [-64.25, -27.5], [-64.35, -27.75], [-64.25, -28.0], [-64.35, -28.25], [-64.25, -28.5], [-64.35, -28.75], [-64.25, -29.0], [-64.47, -29.53], [-65.0, -29.75], [-65.25, -29.65], [-65.32, -29.68], [-65.35, -29.75], [-65.32, -29.82], [-64.97, -29.97], [-64.82, -30.32], [-64.75, -30.35], [-64.5, 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"value": [19.732283980041018, 18.120353327337853, 20.702427256316753]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.289227513187313, 12.789941446027058, 15.268870914872537]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.307950696697749, -7.019470924939239, -4.476515256177629]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.922443443771442, -8.443533675369736, -6.565772337563658]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9450967580399088, -2.4660452854876103, -1.5501100033971615]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6006478772700725, -3.0621567547626616, -2.0085995970826804]}}