{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:18:50.690386", "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-Feb-22_to_2020-Feb-24_317.5_-22.5"}, "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": 2020020000651}, "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": "February 22 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 24 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": 133386.56561499755}, "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": ["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": ["South Atlantic 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": -22.5}, "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": 317.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "317.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 310.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 318.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.65, -24.75], [-49.75, -24.5], [-49.65, -24.25], 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-24.75], [-46.75, -24.65], [-46.82, -24.68], [-46.97, -25.03], [-47.32, -25.18], [-47.47, -25.53], [-48.0, -25.75], [-48.25, -25.65], [-48.32, -25.68], [-48.47, -26.03], [-49.0, -26.25], [-49.53, -26.03], [-49.75, -25.5], [-49.65, -25.25], [-49.75, -25.0], [-49.65, -24.75]]]]}, "2020-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.65, -24.75], [-49.75, -24.5], [-49.65, -24.25], [-49.75, -24.0], [-49.65, -23.75], [-49.75, -23.5], [-49.53, -22.97], [-49.18, -22.82], [-49.03, -22.47], [-48.68, -22.32], [-48.53, -21.97], [-48.0, -21.75], [-47.75, -21.85], [-47.5, -21.75], [-47.25, -21.85], [-47.0, -21.75], [-46.47, -21.97], [-46.32, -22.32], [-46.25, -22.35], [-46.0, -22.25], [-45.75, -22.35], [-45.5, -22.25], [-45.25, -22.35], [-45.0, -22.25], [-44.75, -22.35], [-44.68, -22.32], [-44.65, -22.25], [-44.75, -22.0], [-44.53, -21.47], [-44.0, -21.25], [-43.75, -21.35], [-43.5, -21.25], [-43.25, -21.35], [-43.0, -21.25], [-42.5, -21.46], [-42.0, -21.25], [-41.75, 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[-49.53, -26.03], [-49.75, -25.5], [-49.65, -25.25], [-49.75, -25.0], [-49.65, -24.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.972988490894352}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.2206562971555033}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.973965779430046, 20.14582854448588, 21.00921600921174]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.117876649582115, 17.299035966725455, 18.854026455370104]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.975873365468739, -3.7863628783667793, -2.8997326476309913]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.972988490894352, -4.805237365608548, -4.15848133242946]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.877763190545977, -2.364832587456066, -1.7842304553781771]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.563543781395915, -3.0687518362518387, -3.019238459094382]}}