{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:01:55.690802", "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-30_to_2015-Jan-02_289.5_-37.0"}, "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": 2014120001278}, "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 30 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 02 2015"}, "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": 64901.35541076027}, "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.E.South-America", "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": -37.0}, "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": 289.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "289.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -37.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, -35.47], [-72.68, -35.32], [-72.53, -34.97], [-72.0, -34.75], [-71.75, -34.85], [-71.5, -34.75], [-71.25, -34.85], [-71.18, -34.82], [-71.15, -34.75], [-71.25, -34.5], [-71.03, -33.97], [-70.5, -33.75], [-70.25, -33.85], [-70.0, -33.75], [-69.47, -33.97], [-69.25, -34.5], [-69.47, -35.03], [-69.82, -35.18], [-69.85, -35.25], [-69.75, -35.5], [-69.85, -35.75], [-69.82, -35.82], [-69.47, -35.97], [-69.25, -36.5], [-69.35, -36.75], [-69.25, -37.0], [-69.35, -37.25], [-69.25, -37.5], [-69.47, -38.03], [-70.0, -38.25], [-70.25, -38.15], [-70.5, -38.25], [-71.03, -38.03], [-71.18, -37.68], [-71.25, -37.65], [-71.5, -37.75], [-72.03, -37.53], [-72.18, -37.18], [-72.25, -37.15], [-72.5, -37.25], [-73.03, -37.03], [-73.25, -36.5], [-73.15, -36.25], [-73.25, -36.0], [-73.03, -35.47]]]]}, "2014-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, -35.47], [-72.68, -35.32], [-72.53, -34.97], [-72.0, -34.75], [-71.75, -34.85], [-71.5, -34.75], [-71.25, -34.85], [-71.18, -34.82], [-71.15, -34.75], [-71.25, -34.5], [-71.03, -33.97], [-70.5, -33.75], [-70.25, -33.85], [-70.0, -33.75], [-69.47, -33.97], [-69.25, -34.5], [-69.35, -34.75], [-69.25, -35.0], [-69.47, -35.53], [-69.82, -35.68], [-69.85, -35.75], [-69.82, -35.82], [-69.75, -35.85], [-69.5, -35.75], [-68.97, -35.97], [-68.75, -36.5], [-68.97, -37.03], [-69.32, -37.18], [-69.35, -37.25], [-69.25, -37.5], [-69.47, -38.03], [-70.0, -38.25], [-70.25, -38.15], [-70.5, -38.25], [-71.03, -38.03], [-71.18, -37.68], [-71.25, -37.65], [-71.5, -37.75], [-72.03, -37.53], [-72.18, -37.18], [-72.25, -37.15], [-72.5, -37.25], [-73.03, -37.03], [-73.25, -36.5], [-73.15, -36.25], [-73.25, -36.0], [-73.03, -35.47]]]]}, "2015-01-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, -35.47], [-72.68, -35.32], [-72.53, -34.97], [-72.0, -34.75], [-71.75, -34.85], [-71.5, -34.75], [-71.25, -34.85], [-71.18, -34.82], [-71.15, -34.75], [-71.25, -34.5], [-71.03, -33.97], [-70.5, -33.75], [-70.25, -33.85], [-70.0, -33.75], [-69.47, -33.97], [-69.25, -34.5], [-69.35, -34.75], [-69.25, -35.0], [-69.47, -35.53], [-69.82, -35.68], [-69.85, -35.75], [-69.82, -35.82], [-69.75, -35.85], [-69.5, -35.75], [-68.97, -35.97], [-68.75, -36.5], [-68.97, -37.03], [-69.32, -37.18], [-69.35, -37.25], [-69.25, -37.5], [-69.47, -38.03], [-70.0, -38.25], [-70.25, -38.15], [-70.5, -38.25], [-71.03, -38.03], [-71.18, -37.68], [-71.25, -37.65], [-71.5, -37.75], [-72.03, -37.53], [-72.18, -37.18], [-72.25, -37.15], [-72.5, -37.25], [-73.03, -37.03], [-73.25, -36.5], [-73.15, -36.25], [-73.25, -36.0], [-73.03, -35.47]]]]}, "2015-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.03, -37.03], [-70.25, -36.5], [-70.03, -35.97], [-69.5, -35.75], [-68.97, -35.97], [-68.75, -36.5], [-68.97, -37.03], [-69.5, -37.25], [-70.03, -37.03]]], [[[-69.47, -33.97], [-69.25, -34.5], [-69.35, -34.75], [-69.25, -35.0], [-69.47, -35.53], [-70.0, -35.75], [-70.25, -35.65], [-70.5, -35.75], [-71.03, -35.53], [-71.25, -35.0], [-71.03, -34.47], [-70.68, -34.32], [-70.53, -33.97], [-70.0, -33.75], [-69.47, -33.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.1736496194697}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.220237775239266}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.36482986448135, 9.918550270779065, 10.140168744152902, 6.442390310321741]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.6342038431901074, -0.3570699709264318, -0.5341250416914818, 0.3052425906299163]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.304693596985947, -4.708261013228987, -4.640774051906657, -3.8078659994879445]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.309146815185954, -6.881812581800432, -8.1736496194697, -4.935694175706146]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5727482965381876, -2.310735509323249, -2.3107197329902, -1.5393407601281628]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9430822937267231, -2.9478106028265287, -3.0520262933661706, -1.6927917589620411]}}