{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:26.919548", "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": "2020-Dec-20_to_2020-Dec-22_303.0_-31.0"}, "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": 2020120000726}, "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": "December 20 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 22 2020"}, "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": 80297.1753093207}, "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", "Brazil", "Uruguay"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.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": -31.0}, "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": 303.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 300.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -28.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.03, -30.03], [-60.25, -29.5], [-60.03, -28.97], [-59.5, -28.75], [-59.25, -28.85], [-59.0, -28.75], [-58.75, -28.85], [-58.5, -28.75], [-58.25, -28.85], [-58.18, -28.82], [-58.03, -28.47], [-57.5, -28.25], [-57.25, -28.35], [-57.18, -28.32], [-57.03, -27.97], [-56.5, -27.75], [-55.97, -27.97], [-55.82, -28.32], [-55.75, -28.35], [-55.5, -28.25], [-54.97, -28.47], [-54.82, -28.82], [-54.47, -28.97], [-54.25, -29.5], [-54.35, -29.75], [-54.25, -30.0], [-54.47, -30.53], [-55.0, -30.75], [-55.25, -30.65], [-55.32, -30.68], [-55.47, -31.03], [-55.82, -31.18], [-55.85, -31.25], [-55.75, -31.5], [-55.85, -31.75], [-55.82, -31.82], [-55.47, -31.97], [-55.25, -32.5], [-55.47, -33.03], [-56.0, -33.25], [-56.53, -33.03], [-56.68, -32.68], [-57.03, -32.53], [-57.18, -32.18], [-57.53, -32.03], [-57.68, -31.68], [-58.03, -31.53], [-58.25, -31.0], [-58.03, -30.47], [-57.62, -30.3], [-57.68, -30.18], [-57.75, -30.15], [-58.0, -30.25], [-58.25, -30.15], [-58.5, -30.25], [-58.75, -30.15], [-59.0, -30.25], [-59.25, -30.15], [-59.5, -30.25], [-60.03, -30.03]]]]}, "2020-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.03, -30.03], [-60.25, -29.5], [-60.03, -28.97], [-59.5, -28.75], [-59.25, -28.85], [-59.0, -28.75], [-58.75, -28.85], [-58.5, -28.75], [-58.25, -28.85], [-58.18, -28.82], [-58.03, -28.47], [-57.5, -28.25], [-57.25, -28.35], [-57.18, -28.32], [-57.03, -27.97], [-56.5, -27.75], [-55.97, -27.97], [-55.82, -28.32], [-55.75, -28.35], [-55.5, -28.25], [-54.97, -28.47], [-54.82, -28.82], [-54.47, -28.97], [-54.25, -29.5], [-54.35, -29.75], [-54.25, -30.0], [-54.47, -30.53], [-55.0, -30.75], [-55.25, -30.65], [-55.32, -30.68], [-55.47, -31.03], [-55.82, -31.18], [-55.85, -31.25], [-55.75, -31.5], [-55.85, -31.75], [-55.82, -31.82], [-55.47, -31.97], [-55.25, -32.5], [-55.47, -33.03], [-56.0, -33.25], [-56.53, -33.03], [-56.68, -32.68], [-57.03, -32.53], [-57.18, -32.18], [-57.53, -32.03], [-57.68, -31.68], [-58.03, -31.53], [-58.25, -31.0], [-58.03, -30.47], [-57.62, -30.3], [-57.68, -30.18], [-57.75, -30.15], [-58.0, -30.25], [-58.25, -30.15], [-58.5, -30.25], [-58.75, -30.15], [-59.0, -30.25], [-59.25, -30.15], [-59.5, -30.25], [-60.03, -30.03]]]]}, "2020-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.03, -30.03], [-60.25, -29.5], [-60.03, -28.97], [-59.5, -28.75], [-59.25, -28.85], [-59.0, -28.75], [-58.75, -28.85], [-58.5, -28.75], [-58.25, -28.85], [-58.18, -28.82], [-58.03, -28.47], [-57.5, -28.25], [-57.25, -28.35], [-57.18, -28.32], [-57.03, -27.97], [-56.5, -27.75], [-55.97, -27.97], [-55.82, -28.32], [-55.75, -28.35], [-55.5, -28.25], [-54.97, -28.47], [-54.82, -28.82], [-54.47, -28.97], [-54.25, -29.5], [-54.35, -29.75], [-54.25, -30.0], [-54.47, -30.53], [-55.0, -30.75], [-55.25, -30.65], [-55.32, -30.68], [-55.47, -31.03], [-55.82, -31.18], [-55.85, -31.25], [-55.75, -31.5], [-55.85, -31.75], [-55.82, -31.82], [-55.47, -31.97], [-55.25, -32.5], [-55.47, -33.03], [-56.0, -33.25], [-56.53, -33.03], [-56.68, -32.68], [-57.03, -32.53], [-57.18, -32.18], [-57.53, -32.03], [-57.68, -31.68], [-58.03, -31.53], [-58.25, -31.0], [-58.03, -30.47], [-57.62, -30.3], [-57.68, -30.18], [-57.75, -30.15], [-58.0, -30.25], [-58.25, -30.15], [-58.5, -30.25], [-58.75, -30.15], [-59.0, -30.25], [-59.25, -30.15], [-59.5, -30.25], [-60.03, -30.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.003061441640398}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.083685728139327}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.140337664676508, 20.549759392352428, 21.043052990964213]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.158653049780355, 18.508153074200152, 19.294750090869172]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.761702545485211, -4.436032867615306, -4.0533217713174645]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.144088553417362, -5.003061441640398, -4.51705633037642]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4286077774784383, -1.659123268737516, -1.5080425434852198]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5582383206748034, -1.8524686014077318, -1.6609158088368763]}}