{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:30.180688", "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_290.0_-57.0"}, "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": 2023100000221}, "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": 59144.37445410248}, "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": ["Atlantic Ocean", "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": -57.0}, "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": 290.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 292.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -57.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -54.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-72.25, -53.85], [-72.0, -53.75], [-71.75, -53.85], [-71.5, -53.75], [-70.97, -53.97], [-70.82, -54.32], [-70.75, -54.35], [-70.5, -54.25], [-69.97, -54.47], [-69.82, -54.82], [-69.75, -54.85], [-69.5, -54.75], [-69.25, -54.85], [-69.0, -54.75], [-68.75, -54.85], [-68.5, -54.75], [-67.97, -54.97], [-67.82, -55.32], [-67.75, -55.35], [-67.5, -55.25], [-66.97, -55.47], [-66.75, -56.0], [-66.97, -56.53], [-67.5, -56.75], [-67.75, -56.65], [-67.82, -56.68], [-67.97, -57.03], [-68.5, -57.25], [-68.75, -57.15], [-68.82, -57.18], [-68.97, -57.53], [-69.5, -57.75], [-69.75, -57.65], [-70.0, -57.75], [-70.25, -57.65], [-70.5, -57.75], [-71.03, -57.53], [-71.18, -57.18], [-71.53, -57.03], [-71.75, -56.5], [-71.65, -56.25], [-71.68, -56.18], [-71.75, -56.15], [-72.0, -56.25], [-72.53, -56.03], [-72.68, -55.68], [-72.75, -55.65], [-73.0, -55.75], [-73.53, -55.53], [-73.75, -55.0], [-73.53, -54.47], [-73.18, -54.32], [-73.03, -53.97], [-72.5, -53.75], [-72.25, -53.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.South-America", "Southern-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": [[[[-73.02999999999997, -53.97], [-72.5, -53.75], [-72.25, -53.85], [-72.0, -53.75], [-71.75, -53.85], [-71.5, -53.75], [-70.97000000000003, -53.97], [-70.82, -54.32], [-70.75, -54.35], [-70.5, -54.25], [-69.97000000000003, -54.47], [-69.82, -54.82], [-69.75, -54.85], [-69.5, -54.75], [-69.25, -54.85], [-69.0, -54.75], [-68.75, -54.85], [-68.5, -54.75], [-67.97000000000003, -54.97], [-67.82, -55.32], [-67.75, -55.35], [-67.5, -55.25], [-66.97000000000003, -55.47], [-66.75, -56.0], [-66.97000000000003, -56.53], [-67.5, -56.75], [-67.75, -56.65], [-67.82, -56.68], [-67.97000000000003, -57.03], [-68.5, -57.25], [-68.75, -57.15], [-68.82, -57.18], [-68.97000000000003, -57.53], [-69.5, -57.75], [-69.75, -57.65], [-70.0, -57.75], [-70.25, -57.65], [-70.5, -57.75], [-71.02999999999997, -57.53], [-71.18, -57.18], [-71.52999999999997, -57.03], [-71.75, -56.5], [-71.64999999999998, -56.25], [-71.68, -56.18], [-71.75, -56.15], [-72.0, -56.25], [-72.52999999999997, -56.03], [-72.68, -55.68], [-72.75, -55.65], [-73.0, -55.75], [-73.52999999999997, -55.53], [-73.75, -55.0], [-73.52999999999997, -54.47], [-73.18, -54.32], [-73.02999999999997, -53.97]]]]}, "2023-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.02999999999997, -53.97], [-72.5, -53.75], [-72.25, -53.85], [-72.0, -53.75], [-71.75, -53.85], [-71.5, -53.75], [-70.97000000000003, -53.97], [-70.82, -54.32], [-70.75, -54.35], [-70.5, -54.25], [-69.97000000000003, -54.47], [-69.82, -54.82], [-69.75, -54.85], [-69.5, -54.75], [-69.25, -54.85], [-69.0, -54.75], [-68.75, -54.85], [-68.5, -54.75], [-67.97000000000003, -54.97], [-67.82, -55.32], [-67.75, -55.35], [-67.5, -55.25], [-66.97000000000003, -55.47], [-66.75, -56.0], [-66.97000000000003, -56.53], [-67.5, -56.75], [-67.75, -56.65], [-67.82, -56.68], [-67.97000000000003, -57.03], [-68.5, -57.25], [-68.75, -57.15], [-68.82, -57.18], [-68.97000000000003, -57.53], [-69.5, -57.75], [-69.75, -57.65], [-70.0, -57.75], [-70.25, -57.65], [-70.5, -57.75], [-71.02999999999997, -57.53], [-71.18, -57.18], [-71.52999999999997, -57.03], [-71.75, -56.5], [-71.64999999999998, -56.25], [-71.68, -56.18], [-71.75, -56.15], [-72.0, -56.25], [-72.52999999999997, -56.03], [-72.68, -55.68], [-72.75, -55.65], [-73.0, -55.75], [-73.52999999999997, -55.53], [-73.75, -55.0], [-73.52999999999997, -54.47], [-73.18, -54.32], [-73.02999999999997, -53.97]]]]}, "2023-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.02999999999997, -53.97], [-72.5, -53.75], [-72.25, -53.85], [-72.0, -53.75], [-71.75, -53.85], [-71.5, -53.75], [-70.97000000000003, -53.97], [-70.82, -54.32], [-70.75, -54.35], [-70.5, -54.25], [-69.97000000000003, -54.47], [-69.82, -54.82], [-69.75, -54.85], [-69.5, -54.75], [-69.25, 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-2.877871229987477}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.272288221372253}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.6708905750560916, 2.5627469137799608, 2.4214663070592906]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.9018023592129225, 1.6100980538855083, 1.5933131766215638]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.19472848815178, -2.265083397369282, -2.357052778595697]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.70927528146359, -2.613647485188835, -2.877871229987477]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6024156078580631, -1.654105860263043, -1.6661024453435387]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7848623114677824, -2.0286814470700154, -1.9732487819732176]}}