{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:07.450576", "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": "2025-Apr-27_to_2025-May-01_289.0_-27.5"}, "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": 2025040000548}, "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": "April 27 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 01 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 54915.95632436343}, "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": -27.5}, "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": 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": 286.75}, "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": -29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.03, -29.53], [-72.25, -29.0], [-72.03, -28.47], [-71.5, -28.25], [-70.97, -28.47], [-70.75, -29.0], [-70.97, -29.53], [-71.5, -29.75], [-72.03, -29.53]]], [[[-71.53, -28.03], [-71.75, -27.5], [-71.53, -26.97], [-71.0, -26.75], [-70.47, -26.97], [-70.25, -27.5], [-70.47, -28.03], [-71.0, -28.25], [-71.53, -28.03]]]]}, "2025-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.53, -25.97], [-72.0, -25.75], [-71.5, -25.96], [-71.0, -25.75], [-70.47, -25.97], [-70.25, -26.5], [-70.46, -27.0], [-70.25, -27.5], [-70.35, -27.75], [-70.25, -28.0], [-70.35, -28.25], [-70.25, -28.5], [-70.47, -29.03], [-70.82, -29.18], [-70.97, -29.53], [-71.5, -29.75], [-72.03, -29.53], [-72.25, -29.0], [-72.15, -28.75], [-72.25, -28.5], [-72.03, -27.97], [-71.68, -27.82], [-71.65, -27.75], [-71.7, -27.62], [-72.0, -27.75], [-72.53, -27.53], [-72.75, -27.0], [-72.65, -26.75], [-72.75, -26.5], [-72.53, -25.97]]]]}, "2025-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, -26.5], [-73.53, -25.97], [-73.18, -25.82], [-73.03, -25.47], [-72.5, -25.25], [-72.25, -25.35], [-72.0, -25.25], [-71.47, -25.47], [-71.32, -25.82], [-71.25, -25.85], [-71.0, -25.75], [-70.47, -25.97], [-70.25, -26.5], [-70.35, -26.75], [-70.25, -27.0], [-70.35, -27.25], [-70.25, -27.5], [-70.35, -27.75], [-70.25, -28.0], [-70.35, -28.25], [-70.25, -28.5], [-70.47, -29.03], [-70.82, -29.18], [-70.97, -29.53], [-71.5, -29.75], [-71.75, -29.65], [-72.0, -29.75], [-72.53, -29.53], [-72.75, -29.0], [-72.65, -28.75], [-72.75, -28.5], [-72.62, -28.2], [-73.03, -28.03], [-73.25, -27.5], [-73.15, -27.25], [-73.18, -27.18], [-73.53, -27.03], [-73.75, -26.5]]]]}, "2025-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, -26.5], [-73.53, -25.97], [-73.18, -25.82], [-73.03, -25.47], [-72.5, -25.25], [-72.25, -25.35], [-72.0, -25.25], [-71.47, -25.47], [-71.32, -25.82], [-71.25, -25.85], [-71.0, -25.75], [-70.47, -25.97], [-70.25, -26.5], [-70.35, -26.75], [-70.25, -27.0], [-70.35, -27.25], [-70.25, -27.5], [-70.35, -27.75], [-70.25, -28.0], [-70.35, -28.25], [-70.25, -28.5], [-70.47, -29.03], [-70.82, -29.18], [-70.97, -29.53], [-71.5, -29.75], [-71.75, -29.65], [-72.0, -29.75], [-72.53, -29.53], [-72.75, -29.0], [-72.65, -28.75], [-72.75, -28.5], [-72.62, -28.2], [-73.03, -28.03], [-73.25, -27.5], [-73.15, -27.25], [-73.18, -27.18], [-73.53, -27.03], [-73.75, -26.5]]]]}, "2025-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, -26.5], [-73.53, -25.97], [-73.18, -25.82], [-73.03, -25.47], [-72.5, -25.25], [-72.25, -25.35], [-72.0, -25.25], [-71.47, -25.47], [-71.32, -25.82], [-71.25, -25.85], [-71.0, -25.75], [-70.47, -25.97], [-70.25, -26.5], [-70.35, -26.75], [-70.25, -27.0], [-70.35, -27.25], [-70.25, -27.5], [-70.35, -27.75], [-70.25, -28.0], [-70.35, -28.25], [-70.25, -28.5], [-70.47, -29.03], [-70.82, -29.18], [-70.97, -29.53], [-71.5, -29.75], [-71.75, -29.65], [-72.0, -29.75], [-72.53, -29.53], [-72.75, -29.0], [-72.65, -28.75], [-72.75, -28.5], [-72.62, -28.2], [-73.03, -28.03], [-73.25, -27.5], [-73.15, -27.25], [-73.18, -27.18], [-73.53, -27.03], [-73.75, -26.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4431815348655164}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3219731162597945}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.982513682047568, 14.311767832438136, 14.767908986409566, 14.683406829833984, 14.881903330485045]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.427337900797568, 12.718892669677757, 12.63072230021163, 12.942728932698571, 12.707143402099632]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0082214492032904, -1.4008818546430177, -1.3714854690720528, -1.420199874919544, -1.1740456761401474]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0661205697569471, -2.4431815348655164, -2.1341398494204213, -1.6412964788511886, -1.8148271081133203]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2722178022436856, -1.6476113470039122, -1.7708500046629354, -1.8541703145865498, -1.5233502475148482]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.290107113311581, -2.4007097377879143, -2.139579996481044, -2.184129962348783, -1.8835064249473192]}}