{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:01:50.845024", "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": "2014-Dec-01_to_2014-Dec-03_300.5_-25.0"}, "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": 2014120000061}, "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 01 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 03 2014"}, "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": 194276.30650530854}, "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", "Paraguay"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America", "South-American-Monsoon"]}, "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": -25.0}, "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": 300.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 302.75}, "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": -19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, -24.47], [-60.68, -24.32], [-60.65, -24.25], [-60.75, -24.0], [-60.65, -23.75], [-60.75, -23.5], [-60.65, -23.25], [-60.68, -23.18], [-61.03, -23.03], [-61.25, -22.5], [-61.03, -21.97], [-60.68, -21.82], [-60.53, -21.47], [-60.0, -21.25], [-59.75, -21.35], [-59.68, -21.32], [-59.65, -21.25], [-59.75, -21.0], [-59.65, -20.75], [-59.75, -20.5], [-59.65, -20.25], [-59.75, -20.0], [-59.65, -19.75], [-59.75, -19.5], [-59.53, -18.97], [-59.0, -18.75], [-58.47, -18.97], [-58.25, -19.5], [-58.35, -19.75], [-58.32, -19.82], [-57.97, -19.97], [-57.75, -20.5], [-57.85, -20.75], [-57.82, -20.82], [-57.47, -20.97], [-57.25, -21.5], [-57.35, -21.75], [-57.25, -22.0], [-57.35, -22.25], [-57.32, -22.32], [-56.97, -22.47], [-56.75, -23.0], [-56.85, -23.25], [-56.75, -23.5], [-56.97, -24.03], [-57.5, -24.25], [-57.8, -24.12], [-57.85, -24.25], [-57.75, -24.5], [-57.85, -24.75], [-57.82, -24.82], [-57.47, -24.97], [-57.25, -25.5], [-57.35, -25.75], [-57.32, -25.82], [-56.97, -25.97], [-56.75, -26.5], [-56.85, -26.75], [-56.75, -27.0], [-56.85, -27.25], [-56.75, -27.5], [-56.85, -27.75], [-56.75, -28.0], [-56.97, -28.53], [-57.5, -28.75], [-57.75, -28.65], [-58.0, -28.75], [-58.53, -28.53], [-58.7, -28.12], [-59.0, -28.25], [-59.53, -28.03], [-59.68, -27.68], [-60.03, -27.53], [-60.18, -27.18], [-60.53, -27.03], [-60.75, -26.5], [-60.65, -26.25], [-60.68, -26.18], [-61.03, -26.03], [-61.25, -25.5], [-61.15, -25.25], [-61.25, -25.0], [-61.03, -24.47]]]]}, "2014-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, -24.47], [-60.68, -24.32], [-60.65, -24.25], [-60.75, -24.0], [-60.65, -23.75], [-60.75, -23.5], [-60.65, -23.25], [-60.68, -23.18], [-61.03, -23.03], [-61.25, -22.5], [-61.03, -21.97], [-60.68, -21.82], [-60.53, -21.47], [-60.0, -21.25], [-59.75, -21.35], [-59.68, -21.32], [-59.65, -21.25], [-59.75, -21.0], [-59.65, -20.75], [-59.75, -20.5], [-59.65, -20.25], [-59.75, -20.0], [-59.65, -19.75], [-59.75, -19.5], [-59.53, -18.97], [-59.0, -18.75], [-58.47, -18.97], [-58.25, -19.5], [-58.35, -19.75], [-58.32, -19.82], [-57.97, -19.97], [-57.75, -20.5], [-57.85, -20.75], [-57.82, -20.82], [-57.47, -20.97], [-57.25, -21.5], [-57.35, -21.75], [-57.25, -22.0], [-57.35, -22.25], [-57.32, -22.32], [-56.97, -22.47], [-56.75, -23.0], [-56.85, -23.25], [-56.75, -23.5], [-56.97, -24.03], [-57.5, -24.25], [-57.8, -24.12], [-57.85, -24.25], [-57.75, -24.5], [-57.85, -24.75], [-57.82, -24.82], [-57.47, -24.97], [-57.25, -25.5], [-57.35, -25.75], [-57.32, -25.82], [-56.97, -25.97], [-56.75, -26.5], [-56.85, -26.75], [-56.75, -27.0], [-56.85, -27.25], [-56.75, -27.5], [-56.85, -27.75], [-56.75, -28.0], [-56.97, -28.53], [-57.5, -28.75], [-57.75, -28.65], [-58.0, -28.75], [-58.53, -28.53], [-58.7, -28.12], [-59.0, -28.25], [-59.53, -28.03], [-59.68, -27.68], [-60.03, -27.53], [-60.18, -27.18], [-60.53, -27.03], [-60.75, -26.5], [-60.65, -26.25], [-60.68, -26.18], [-61.03, -26.03], [-61.25, -25.5], [-61.15, -25.25], [-61.25, -25.0], [-61.03, -24.47]]]]}, "2014-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, -24.47], [-60.68, -24.32], [-60.65, -24.25], [-60.75, -24.0], [-60.65, -23.75], [-60.75, -23.5], [-60.65, -23.25], [-60.68, -23.18], [-61.03, -23.03], [-61.25, -22.5], [-61.03, -21.97], [-60.68, -21.82], [-60.53, -21.47], [-60.0, -21.25], [-59.75, -21.35], [-59.68, -21.32], [-59.65, -21.25], [-59.75, -21.0], [-59.65, -20.75], [-59.75, -20.5], [-59.65, -20.25], [-59.75, -20.0], [-59.65, -19.75], [-59.75, -19.5], [-59.53, -18.97], [-59.0, -18.75], [-58.47, -18.97], [-58.25, -19.5], [-58.35, -19.75], [-58.32, -19.82], [-57.97, -19.97], [-57.75, -20.5], [-57.85, -20.75], [-57.82, -20.82], [-57.47, -20.97], [-57.25, -21.5], [-57.35, -21.75], [-57.25, -22.0], [-57.35, -22.25], [-57.32, -22.32], [-56.97, -22.47], [-56.75, -23.0], [-56.85, -23.25], [-56.75, -23.5], [-56.97, -24.03], [-57.5, -24.25], [-57.8, -24.12], [-57.85, -24.25], [-57.75, -24.5], [-57.85, -24.75], [-57.82, -24.82], [-57.47, -24.97], [-57.25, -25.5], [-57.35, -25.75], [-57.32, -25.82], [-56.97, -25.97], [-56.75, -26.5], [-56.85, -26.75], [-56.75, -27.0], [-56.85, -27.25], [-56.75, -27.5], [-56.85, -27.75], [-56.75, -28.0], [-56.97, -28.53], [-57.5, -28.75], [-57.75, -28.65], [-58.0, -28.75], [-58.53, -28.53], [-58.7, -28.12], [-59.0, -28.25], [-59.53, -28.03], [-59.68, -27.68], [-60.03, -27.53], [-60.18, -27.18], [-60.53, -27.03], [-60.75, -26.5], [-60.65, -26.25], [-60.68, -26.18], [-61.03, -26.03], [-61.25, -25.5], [-61.15, -25.25], [-61.25, -25.0], [-61.03, -24.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.831883129334415}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.730577607452757}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.768231080255873, 19.853286075143956, 22.5675819212517]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.179636398447485, 18.70434898707225, 21.15213473570907]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.7248599933576445, -6.651283980881468, -3.8155888481191598]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.831883129334415, -7.821883435069253, -4.551981300013267]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.5580958820577706, -2.466335523304231, -1.4434424607003686]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.4073643870349586, -2.7824689805249383, -1.9402981331693756]}}