{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-28 16:19:51.126406", "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": "2026-May-06_to_2026-May-09_286.5_-46.5"}, "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": 2026050000200}, "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": "May 06 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 09 2026"}, "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": 68431.0222449574}, "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.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": ["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": -46.5}, "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": 286.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "286.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 284.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -48.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -44.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.03, -47.03], [-76.25, -46.5], [-76.03, -45.97], [-75.5, -45.75], [-75.25, -45.85], [-75.18, -45.82], [-75.03, -45.47], [-74.62, -45.3], [-74.75, -45.0], [-74.53, -44.47], [-74.0, -44.25], [-73.5, -44.46], [-73.0, -44.25], [-72.75, -44.35], [-72.5, -44.25], [-72.25, -44.35], [-72.0, -44.25], [-71.47, -44.47], [-71.32, -44.82], [-70.97, -44.97], [-70.75, -45.5], [-70.97, -46.03], [-71.5, -46.25], [-71.75, -46.15], [-71.82, -46.18], [-71.85, -46.25], [-71.75, -46.5], [-71.97, -47.03], [-72.5, -47.25], [-72.75, -47.15], [-73.0, -47.25], [-73.25, -47.15], [-73.5, -47.25], [-74.0, -47.04], [-74.5, -47.25], [-74.75, -47.15], [-75.0, -47.25], [-75.25, -47.15], [-75.5, -47.25], [-76.03, -47.03]]]]}, "2026-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.03, -47.03], [-76.25, -46.5], [-76.03, -45.97], [-75.5, -45.75], [-75.25, -45.85], [-75.18, -45.82], [-75.15, -45.75], [-75.25, -45.5], [-75.03, -44.97], [-74.68, -44.82], [-74.53, -44.47], [-74.0, -44.25], [-73.5, -44.46], [-73.0, -44.25], [-72.75, -44.35], [-72.5, -44.25], [-72.25, -44.35], [-72.0, -44.25], [-71.75, -44.35], [-71.5, -44.25], [-70.97, -44.47], [-70.75, -45.0], [-70.85, -45.25], [-70.75, -45.5], [-70.97, -46.03], [-71.5, -46.25], [-71.75, -46.15], [-71.82, -46.18], [-71.85, -46.25], [-71.75, -46.5], [-71.85, -46.75], [-71.75, -47.0], [-71.85, -47.25], [-71.75, -47.5], [-71.97, -48.03], [-72.32, -48.18], [-72.47, -48.53], [-73.0, -48.75], [-73.25, -48.65], [-73.5, -48.75], [-73.75, -48.65], [-74.0, -48.75], [-74.53, -48.53], [-74.75, -48.0], [-74.54, -47.5], [-74.68, -47.18], [-74.75, -47.15], [-75.0, -47.25], [-75.25, -47.15], [-75.5, -47.25], [-76.03, -47.03]]]]}, "2026-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.03, -47.03], [-76.25, -46.5], [-76.03, -45.97], [-75.5, -45.75], [-75.25, -45.85], [-75.18, -45.82], [-75.15, -45.75], [-75.25, -45.5], [-75.03, -44.97], [-74.68, -44.82], [-74.53, -44.47], [-74.0, -44.25], [-73.5, -44.46], [-73.0, -44.25], [-72.75, -44.35], [-72.5, -44.25], [-72.25, -44.35], [-72.0, -44.25], [-71.75, -44.35], [-71.5, -44.25], [-70.97, -44.47], [-70.75, -45.0], [-70.85, -45.25], [-70.75, -45.5], [-70.97, -46.03], [-71.5, -46.25], [-71.75, -46.15], [-71.82, -46.18], [-71.85, -46.25], [-71.75, -46.5], [-71.85, -46.75], [-71.75, -47.0], [-71.85, -47.25], [-71.75, -47.5], [-71.97, -48.03], [-72.32, -48.18], [-72.47, -48.53], [-73.0, -48.75], [-73.25, -48.65], [-73.5, -48.75], [-73.75, -48.65], [-74.0, -48.75], [-74.53, -48.53], [-74.75, -48.0], [-74.54, -47.5], [-74.68, -47.18], [-74.75, -47.15], [-75.0, -47.25], [-75.25, -47.15], [-75.5, -47.25], [-76.03, -47.03]]]]}, "2026-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -45.5], [-75.03, -44.97], [-74.5, -44.75], [-74.25, -44.85], [-74.0, -44.75], [-73.75, -44.85], [-73.68, -44.82], [-73.53, -44.47], [-73.0, -44.25], [-72.75, -44.35], [-72.5, -44.25], [-72.25, -44.35], [-72.0, -44.25], [-71.75, -44.35], [-71.5, -44.25], [-70.97, -44.47], [-70.75, -45.0], [-70.85, -45.25], 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0.9239473130967895]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.069347127278604, -3.247593943277991, -5.7217544555663835, -3.5725234985351335]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.03581368076262, -4.087503931928325, -4.997009234869719, -4.029724015164628]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.811253763142588, -5.431027848076496, -7.54424891892711, -5.584196373391421]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7412518564029162, -1.839251547212282, -2.232978167789395, -1.7510112179206294]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3517088695294404, -2.290134936422956, -3.5757143148449124, -2.254452264199866]}}