{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:30.256504", "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": "2023-Oct-08_to_2023-Oct-10_283.0_-50.5"}, "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": 2023100000222}, "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": "October 08 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 10 2023"}, "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": 98819.4640644652}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": ["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": -50.5}, "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": 283.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "283.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 281.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 286.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -53.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -49.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-79.0, -49.25], [-78.75, -49.35], [-78.5, -49.25], [-78.25, -49.35], [-78.0, -49.25], [-77.75, -49.35], [-77.5, -49.25], [-77.25, -49.35], [-77.0, -49.25], [-76.75, -49.35], [-76.5, -49.25], [-76.25, -49.35], [-76.0, -49.25], [-75.75, -49.35], [-75.68, -49.32], [-75.53, -48.97], [-75.0, -48.75], [-74.47, -48.97], [-74.25, -49.5], [-74.35, -49.75], [-74.25, -50.0], [-74.35, -50.25], [-74.25, -50.5], [-74.35, -50.75], [-74.32, -50.82], [-73.97, -50.97], [-73.82, -51.32], [-73.47, -51.47], [-73.25, -52.0], [-73.35, -52.25], [-73.25, -52.5], [-73.47, -53.03], [-73.82, -53.18], [-73.97, -53.53], [-74.5, -53.75], [-75.03, -53.53], [-75.18, -53.18], [-75.25, -53.15], [-75.5, -53.25], [-75.75, -53.15], [-76.0, -53.25], [-76.25, -53.15], [-76.5, -53.25], [-77.03, -53.03], [-77.18, -52.68], [-77.25, -52.65], [-77.5, -52.75], [-77.75, -52.65], [-78.0, -52.75], [-78.53, -52.53], [-78.75, -52.0], [-78.65, -51.75], [-78.68, -51.68], [-79.03, -51.53], [-79.18, -51.18], [-79.53, -51.03], [-79.75, -50.5], [-79.65, -50.25], [-79.75, -50.0], [-79.53, -49.47], [-79.0, -49.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.South-America", "S.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.75, -50.0], [-79.52999999999997, -49.47], [-79.0, -49.25], [-78.75, -49.35], [-78.5, -49.25], [-78.25, -49.35], [-78.0, -49.25], [-77.75, -49.35], [-77.5, -49.25], [-77.25, -49.35], [-77.0, -49.25], [-76.75, -49.35], [-76.5, -49.25], [-76.25, -49.35], [-76.0, -49.25], [-75.75, -49.35], [-75.68, -49.32], [-75.52999999999997, -48.97], [-75.0, -48.75], [-74.47000000000003, -48.97], [-74.25, -49.5], [-74.35000000000002, -49.75], [-74.25, -50.0], [-74.35000000000002, -50.25], [-74.25, -50.5], [-74.35000000000002, -50.75], [-74.32, -50.82], [-73.97000000000003, -50.97], [-73.82, -51.32], [-73.47000000000003, -51.47], [-73.25, -52.0], [-73.35000000000002, -52.25], [-73.25, -52.5], [-73.47000000000003, -53.03], [-73.82, -53.18], [-73.97000000000003, -53.53], [-74.5, -53.75], [-75.02999999999997, -53.53], [-75.18, -53.18], [-75.25, -53.15], [-75.5, -53.25], [-75.75, -53.15], [-76.0, -53.25], [-76.25, -53.15], [-76.5, -53.25], [-77.02999999999997, -53.03], [-77.18, -52.68], [-77.25, -52.65], [-77.5, -52.75], [-77.75, -52.65], [-78.0, -52.75], [-78.52999999999997, -52.53], [-78.75, -52.0], [-78.64999999999998, -51.75], [-78.68, -51.68], [-79.02999999999997, -51.53], [-79.18, -51.18], [-79.52999999999997, -51.03], [-79.75, -50.5], [-79.64999999999998, -50.25], [-79.75, -50.0]]]]}, "2023-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.75, -50.0], [-79.52999999999997, -49.47], [-79.0, -49.25], [-78.75, -49.35], [-78.5, -49.25], [-78.25, -49.35], [-78.0, -49.25], [-77.75, -49.35], [-77.5, -49.25], [-77.25, -49.35], [-77.0, -49.25], [-76.75, -49.35], [-76.5, -49.25], [-76.25, -49.35], [-76.0, -49.25], [-75.75, -49.35], [-75.68, -49.32], 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[-76.5, -53.25], [-77.02999999999997, -53.03], [-77.18, -52.68], [-77.25, -52.65], [-77.5, -52.75], [-77.75, -52.65], [-78.0, -52.75], [-78.52999999999997, -52.53], [-78.75, -52.0], [-78.64999999999998, -51.75], [-78.68, -51.68], [-79.02999999999997, -51.53], [-79.18, -51.18], [-79.52999999999997, -51.03], [-79.75, -50.5], [-79.64999999999998, -50.25], [-79.75, -50.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.9820218299024646}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8413171582871901}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.4765926129652485, 4.606430829544649, 4.5181167372092546]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.083335089356524, 3.1236494521000964, 1.57737137538453]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9270006282960317, -1.7681472449302826, -1.828803601635256]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.385418183178899, -2.4074912435837064, -3.9820218299024646]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7498586922584367, -1.6372045326370035, -1.661803802366126]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.955786061323094, -1.880258185469113, -2.2913792402012194]}}