{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:05.207995", "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-Aug-23_to_2020-Aug-25_306.0_-2.0"}, "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": 2020080000749}, "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": "August 23 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 25 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": 111226.3172005083}, "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": ["N.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": -2.0}, "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": 306.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 307.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -0.97], [-56.5, -0.75], [-56.25, -0.85], [-56.18, -0.82], [-56.15, -0.75], [-56.25, -0.5], [-56.15, -0.25], [-56.25, 0.0], [-56.03, 0.53], [-55.5, 0.75], [-55.25, 0.65], [-55.0, 0.75], [-54.47, 0.53], [-54.32, 0.18], [-53.97, 0.03], [-53.82, -0.32], [-53.75, -0.35], [-53.5, -0.25], [-53.25, -0.35], [-53.0, -0.25], [-52.75, -0.35], [-52.5, -0.25], [-51.97, -0.47], [-51.75, -1.0], [-51.85, -1.25], [-51.75, -1.5], [-51.85, -1.75], [-51.75, -2.0], [-51.97, -2.53], [-52.32, -2.68], [-52.47, -3.03], [-52.82, -3.18], [-52.97, -3.53], [-53.5, -3.75], [-54.0, -3.54], [-54.5, -3.75], [-55.03, -3.53], [-55.2, -3.12], [-55.5, -3.25], [-55.75, -3.15], [-56.0, -3.25], [-56.53, -3.03], [-56.68, -2.68], [-57.03, -2.53], [-57.25, -2.0], [-57.15, -1.75], [-57.25, -1.5], [-57.03, -0.97]]]]}, "2020-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -0.97], [-56.5, -0.75], [-56.25, -0.85], [-56.18, -0.82], [-56.15, -0.75], [-56.25, -0.5], [-56.15, -0.25], [-56.25, 0.0], [-56.03, 0.53], [-55.5, 0.75], [-55.25, 0.65], [-55.0, 0.75], [-54.47, 0.53], [-54.32, 0.18], [-53.97, 0.03], [-53.82, -0.32], [-53.75, -0.35], [-53.5, -0.25], [-53.25, -0.35], [-53.0, -0.25], [-52.75, -0.35], [-52.5, -0.25], [-51.97, -0.47], [-51.75, -1.0], [-51.85, -1.25], [-51.75, -1.5], [-51.85, -1.75], [-51.75, -2.0], [-51.97, -2.53], [-52.32, -2.68], [-52.47, -3.03], [-52.82, -3.18], [-52.97, -3.53], [-53.5, -3.75], [-54.0, -3.54], [-54.5, -3.75], [-55.03, -3.53], [-55.2, -3.12], [-55.5, -3.25], [-55.75, -3.15], [-56.0, -3.25], [-56.53, -3.03], [-56.68, -2.68], [-57.03, -2.53], [-57.25, -2.0], [-57.15, -1.75], [-57.25, -1.5], [-57.03, -0.97]]]]}, "2020-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -0.97], [-56.5, -0.75], [-56.25, -0.85], [-56.18, -0.82], [-56.15, -0.75], [-56.25, -0.5], [-56.15, -0.25], [-56.25, 0.0], [-56.03, 0.53], [-55.5, 0.75], [-55.25, 0.65], [-55.0, 0.75], [-54.47, 0.53], [-54.32, 0.18], [-53.97, 0.03], [-53.82, -0.32], [-53.75, -0.35], [-53.5, -0.25], [-53.25, -0.35], [-53.0, -0.25], [-52.75, -0.35], [-52.5, -0.25], [-51.97, -0.47], [-51.75, -1.0], [-51.85, -1.25], [-51.75, -1.5], [-51.85, -1.75], [-51.75, -2.0], [-51.97, -2.53], [-52.32, -2.68], [-52.47, -3.03], [-52.82, -3.18], [-52.97, -3.53], [-53.5, -3.75], [-54.0, -3.54], [-54.5, -3.75], [-55.03, -3.53], [-55.2, -3.12], [-55.5, -3.25], [-55.75, -3.15], [-56.0, -3.25], [-56.53, -3.03], [-56.68, -2.68], [-57.03, -2.53], [-57.25, -2.0], [-57.15, -1.75], [-57.25, -1.5], [-57.03, -0.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.927461456028027}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2847544269372815}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.27739996805434, 23.994115542168345, 25.322818798173216]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.9882449130115, 21.90655889017438, 23.44323391090137]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8211995321680234, -3.156028815995157, -1.8770349326486648]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.630700124649138, -3.927461456028027, -2.9040279908905973]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.22463778852173, -3.990104788980273, -2.4485620023687216]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.5597514244769766, -5.4802732052832175, -3.7955520301004086]}}