{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:54.247137", "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-Sep-24_to_2025-Sep-26_287.5_-7.0"}, "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": 2025090000543}, "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": "September 24 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 26 2025"}, "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": 76722.0950696215}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.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": -7.0}, "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": 287.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "287.5\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": 292.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.65, -6.25], [-73.75, -6.0], [-73.53, -5.47], [-73.0, -5.25], [-72.75, -5.35], [-72.5, -5.25], [-72.0, -5.46], [-71.5, -5.25], [-71.25, -5.35], [-71.0, -5.25], [-70.5, -5.46], [-70.0, -5.25], [-69.75, -5.35], [-69.5, -5.25], [-68.97, -5.47], [-68.82, -5.82], [-68.47, -5.97], [-68.25, -6.5], [-68.35, -6.75], [-68.32, -6.82], [-68.25, -6.85], [-68.0, -6.75], [-67.75, -6.85], [-67.5, -6.75], [-66.97, -6.97], [-66.75, -7.5], [-66.85, -7.75], [-66.75, -8.0], [-66.97, -8.53], [-67.5, -8.75], [-68.03, -8.53], [-68.18, -8.18], [-68.25, -8.15], [-68.5, -8.25], [-69.0, -8.04], [-69.5, -8.25], [-70.03, -8.03], [-70.25, -7.5], [-70.15, -7.25], [-70.18, -7.18], [-70.25, -7.15], [-70.5, -7.25], [-71.03, -7.03], [-71.18, -6.68], [-71.25, -6.65], [-71.32, -6.68], [-71.35, -6.75], [-71.25, -7.0], [-71.35, -7.25], [-71.32, -7.32], [-70.97, -7.47], [-70.75, -8.0], [-70.97, -8.53], [-71.5, -8.75], [-72.03, -8.53], [-72.18, -8.18], [-72.25, -8.15], [-72.5, -8.25], [-73.03, -8.03], [-73.18, -7.68], [-73.53, -7.53], [-73.75, -7.0], [-73.65, -6.75], [-73.75, -6.5], [-73.65, -6.25]]]]}, "2025-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.65, -6.25], [-73.75, -6.0], [-73.53, -5.47], [-73.0, -5.25], [-72.75, -5.35], [-72.5, -5.25], [-72.0, -5.46], [-71.5, -5.25], [-71.25, -5.35], [-71.0, -5.25], [-70.5, -5.46], [-70.0, -5.25], [-69.75, -5.35], [-69.5, -5.25], [-68.97, -5.47], [-68.82, -5.82], [-68.47, -5.97], [-68.25, -6.5], [-68.35, -6.75], [-68.32, -6.82], [-68.25, -6.85], [-68.0, -6.75], [-67.75, -6.85], [-67.5, -6.75], [-66.97, -6.97], [-66.75, -7.5], [-66.85, -7.75], [-66.75, -8.0], [-66.97, -8.53], [-67.5, -8.75], [-68.03, -8.53], [-68.18, -8.18], [-68.25, -8.15], [-68.5, -8.25], [-69.0, -8.04], [-69.5, -8.25], [-70.03, -8.03], [-70.25, -7.5], [-70.15, -7.25], [-70.18, -7.18], [-70.25, -7.15], [-70.5, -7.25], [-71.03, -7.03], [-71.18, -6.68], [-71.25, -6.65], [-71.32, -6.68], [-71.35, -6.75], [-71.25, -7.0], [-71.35, -7.25], [-71.32, -7.32], [-70.97, -7.47], [-70.75, -8.0], [-70.97, -8.53], [-71.5, -8.75], [-72.03, -8.53], [-72.18, -8.18], [-72.25, -8.15], [-72.5, -8.25], [-73.03, -8.03], [-73.18, -7.68], [-73.53, -7.53], [-73.75, -7.0], [-73.65, -6.75], [-73.75, -6.5], [-73.65, -6.25]]]]}, "2025-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.65, -6.25], [-73.75, -6.0], [-73.53, -5.47], [-73.0, -5.25], [-72.75, -5.35], [-72.5, -5.25], [-72.0, -5.46], [-71.5, -5.25], [-71.25, -5.35], [-71.0, -5.25], [-70.5, -5.46], [-70.0, -5.25], [-69.75, -5.35], [-69.5, -5.25], [-68.97, -5.47], [-68.82, -5.82], [-68.47, -5.97], [-68.25, -6.5], [-68.35, -6.75], [-68.32, -6.82], [-68.25, -6.85], [-68.0, -6.75], [-67.75, -6.85], [-67.5, -6.75], [-66.97, -6.97], [-66.75, -7.5], [-66.85, -7.75], [-66.75, -8.0], [-66.97, -8.53], [-67.5, -8.75], [-68.03, -8.53], [-68.18, -8.18], [-68.25, -8.15], [-68.5, -8.25], [-69.0, -8.04], [-69.5, -8.25], [-70.03, -8.03], [-70.25, -7.5], [-70.15, -7.25], [-70.18, -7.18], [-70.25, -7.15], [-70.5, -7.25], [-71.03, -7.03], [-71.18, -6.68], [-71.25, 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{"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8157621128546817, -2.5839261170328474, -1.8364436983221617]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4463894175569294, -2.887680628518126, -2.509884078970231]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.425769637806944, -2.062511009662811, -1.4843364019067942]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0944185666338337, -2.2110111169858113, -2.0105915797424414]}}