{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:27.354055", "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": "2017-Jul-15_to_2017-Jul-18_289.0_-34.0"}, "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": 2017070000619}, "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": "July 15 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 18 2017"}, "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": 61287.92525831985}, "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": ["Chile"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["South Pacific Ocean"]}, "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": -34.0}, "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": 289.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "289.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 285.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 289.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -33.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.97, -36.47], [-72.75, -37.0], [-72.97, -37.53], [-73.32, -37.68], [-73.47, -38.03], [-74.0, -38.25], [-74.53, -38.03], [-74.75, -37.5], [-74.53, -36.97], [-74.18, -36.82], [-74.03, -36.47], [-73.5, -36.25], [-72.97, -36.47]]], [[[-72.15, -36.25], [-72.25, -36.0], [-72.15, -35.75], [-72.25, -35.5], [-72.03, -34.97], [-71.68, -34.82], [-71.65, -34.75], [-71.75, -34.5], [-71.65, -34.25], [-71.75, -34.0], [-71.65, -33.75], [-71.75, -33.5], [-71.53, -32.97], [-71.0, -32.75], [-70.47, -32.97], [-70.25, -33.5], [-70.35, -33.75], [-70.25, -34.0], [-70.35, -34.25], [-70.25, -34.5], [-70.35, -34.75], [-70.25, -35.0], [-70.35, -35.25], [-70.25, -35.5], [-70.47, -36.03], [-70.82, -36.18], [-70.85, -36.25], [-70.75, -36.5], [-70.97, -37.03], [-71.32, -37.18], [-71.35, -37.25], [-71.25, -37.5], [-71.35, -37.75], [-71.25, -38.0], [-71.35, -38.25], [-71.25, -38.5], [-71.35, -38.75], [-71.25, -39.0], [-71.47, -39.53], [-71.87, -39.7], [-71.75, -40.0], [-71.85, -40.25], [-71.75, -40.5], [-71.85, -40.75], [-71.75, -41.0], [-71.97, -41.53], [-72.5, -41.75], [-73.03, -41.53], [-73.25, -41.0], [-73.15, -40.75], [-73.25, -40.5], [-73.15, -40.25], [-73.25, -40.0], [-73.07, -39.57], [-73.5, -39.75], [-74.03, -39.53], [-74.25, -39.0], [-74.03, -38.47], [-73.5, -38.25], [-72.97, -38.47], [-72.75, -39.0], [-72.65, -38.75], [-72.75, -38.5], [-72.65, -38.25], [-72.75, -38.0], [-72.65, -37.75], [-72.75, -37.5], [-72.65, -37.25], [-72.75, -37.0], [-72.53, -36.47], [-72.18, -36.32], [-72.15, -36.25]], [[-72.93, -39.43], [-72.62, -39.3], [-72.75, -39.0], [-72.93, -39.43]]]]}, "2017-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -37.5], [-74.53, -36.97], [-74.18, -36.82], [-74.03, -36.47], [-73.5, -36.25], [-72.97, -36.47], [-72.75, -37.0], [-72.53, -36.47], [-72.18, -36.32], [-72.15, -36.25], [-72.25, -36.0], [-72.15, -35.75], [-72.25, -35.5], [-72.03, -34.97], [-71.68, -34.82], [-71.65, -34.75], [-71.75, -34.5], [-71.65, -34.25], [-71.75, -34.0], [-71.65, -33.75], [-71.75, -33.5], [-71.53, -32.97], [-71.0, -32.75], [-70.47, -32.97], [-70.25, -33.5], [-70.35, -33.75], [-70.25, -34.0], [-70.35, -34.25], [-70.25, -34.5], [-70.35, -34.75], [-70.25, -35.0], [-70.35, -35.25], [-70.25, -35.5], [-70.47, -36.03], [-70.82, -36.18], [-70.85, -36.25], [-70.75, -36.5], [-70.97, -37.03], [-71.32, -37.18], [-71.35, -37.25], [-71.25, -37.5], [-71.35, -37.75], [-71.25, -38.0], [-71.35, -38.25], [-71.25, -38.5], [-71.35, -38.75], [-71.25, -39.0], [-71.47, -39.53], [-71.82, -39.68], [-71.85, -39.75], [-71.75, -40.0], [-71.85, -40.25], [-71.75, -40.5], [-71.85, -40.75], [-71.75, -41.0], [-71.97, -41.53], [-72.5, -41.75], [-73.03, -41.53], [-73.25, -41.0], [-73.15, -40.75], [-73.25, -40.5], [-73.15, -40.25], [-73.25, -40.0], [-73.15, -39.75], [-73.2, -39.62], [-73.5, -39.75], [-74.03, -39.53], [-74.25, -39.0], [-74.04, -38.5], [-74.18, -38.18], [-74.53, -38.03], [-74.75, -37.5]], [[-72.87, -37.3], [-72.7, -37.38], [-72.65, -37.25], [-72.75, -37.0], [-72.87, -37.3]]]]}, "2017-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -37.5], [-74.53, -36.97], [-74.18, -36.82], [-74.03, -36.47], [-73.5, -36.25], [-72.97, -36.47], [-72.75, -37.0], [-72.53, -36.47], [-72.18, -36.32], [-72.15, -36.25], [-72.25, -36.0], [-72.15, -35.75], [-72.25, -35.5], [-72.03, -34.97], [-71.68, -34.82], [-71.65, -34.75], [-71.75, -34.5], [-71.65, -34.25], [-71.75, -34.0], [-71.65, -33.75], [-71.75, -33.5], [-71.53, -32.97], [-71.0, -32.75], [-70.47, -32.97], [-70.25, -33.5], [-70.35, -33.75], [-70.25, -34.0], [-70.35, -34.25], [-70.25, -34.5], [-70.35, -34.75], [-70.25, -35.0], [-70.35, -35.25], [-70.25, -35.5], [-70.47, -36.03], [-70.82, -36.18], [-70.85, -36.25], [-70.75, -36.5], [-70.97, -37.03], [-71.32, -37.18], [-71.35, -37.25], [-71.25, -37.5], [-71.35, -37.75], [-71.25, -38.0], [-71.35, -38.25], [-71.25, -38.5], [-71.35, -38.75], [-71.25, -39.0], [-71.47, -39.53], [-71.82, -39.68], [-71.85, -39.75], [-71.75, -40.0], [-71.85, -40.25], [-71.75, -40.5], [-71.85, -40.75], [-71.75, -41.0], [-71.97, -41.53], [-72.5, -41.75], [-73.03, -41.53], [-73.25, -41.0], [-73.15, -40.75], [-73.25, -40.5], [-73.15, -40.25], [-73.25, -40.0], [-73.15, -39.75], [-73.2, -39.62], [-73.5, -39.75], [-74.03, -39.53], [-74.25, -39.0], [-74.04, -38.5], [-74.18, -38.18], [-74.53, -38.03], [-74.75, -37.5]], [[-72.87, -37.3], [-72.7, -37.38], [-72.65, -37.25], [-72.75, -37.0], [-72.87, -37.3]]]]}, "2017-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.03, -37.47], [-73.5, -37.25], [-73.25, -37.35], [-73.0, -37.25], [-72.47, -37.47], [-72.32, -37.82], [-71.97, -37.97], [-71.82, -38.32], [-71.47, -38.47], [-71.25, -39.0], [-71.47, -39.53], [-71.82, -39.68], [-71.85, -39.75], [-71.75, -40.0], [-71.97, -40.53], [-72.5, -40.75], [-73.03, -40.53], [-73.25, -40.0], [-73.15, -39.75], [-73.25, -39.5], [-73.15, -39.25], [-73.18, -39.18], [-73.53, -39.03], [-73.68, -38.68], [-74.03, -38.53], [-74.25, -38.0], [-74.03, -37.47]]], [[[-71.75, -34.0], [-71.53, -33.47], [-71.0, -33.25], [-70.47, -33.47], [-70.25, -34.0], [-70.35, -34.25], [-70.25, -34.5], [-70.35, -34.75], [-70.25, -35.0], [-70.47, -35.53], [-71.0, -35.75], [-71.53, -35.53], [-71.75, -35.0], [-71.65, -34.75], [-71.75, -34.5], [-71.65, -34.25], [-71.75, -34.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.87298984439775}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.246489725671263}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.716339448289716, -0.057795093374068074, 1.9348910933977095, 2.55824878183347]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.380373508108619, -6.5375854970521345, -3.1728402036359284, 0.6881429908216319]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.062502344282866, -6.897115874711396, -4.904701672870117, -4.316926802071706]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.168652784510414, -10.87298984439775, -8.975669574512551, -5.6418999455386825]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6992068034628152, -2.685013072575398, -1.9330956901010417, -1.670032136515857]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1610811606298195, -3.8126576853498366, -4.0595734053954065, -2.3340238364028796]}}