{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:10.565535", "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": "2021-Nov-20_to_2021-Nov-23_306.0_-1.5"}, "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": 2021110000622}, "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": "November 20 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 23 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 228680.9206386799}, "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", "Guyana"]}, "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": []}, "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": -1.5}, "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": 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": 301.25}, "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": 2.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.25, 0.5], [-59.03, 1.03], [-58.68, 1.18], [-58.53, 1.53], 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{"type": "MultiPolygon", "coordinates": [[[[-59.25, 0.5], [-59.03, 1.03], [-58.68, 1.18], [-58.53, 1.53], [-58.18, 1.68], [-58.15, 1.75], [-58.25, 2.0], [-58.03, 2.53], [-57.5, 2.75], [-56.97, 2.53], [-56.82, 2.18], [-56.75, 2.15], [-56.5, 2.25], [-56.25, 2.15], [-56.0, 2.25], [-55.5, 2.04], [-55.0, 2.25], [-54.47, 2.03], [-54.32, 1.68], [-54.25, 1.65], [-54.0, 1.75], [-53.47, 1.53], [-53.32, 1.18], [-52.97, 1.03], [-52.82, 0.68], [-52.47, 0.53], [-52.25, 0.0], [-52.35, -0.25], [-52.32, -0.32], [-51.97, -0.47], [-51.75, -1.0], [-51.96, -1.5], [-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], [-53.75, -3.65], [-54.0, -3.75], [-54.53, -3.53], [-54.68, -3.18], [-54.75, -3.15], [-55.0, -3.25], [-55.53, -3.03], [-55.75, -2.5], [-55.65, -2.25], [-55.68, -2.18], [-56.03, -2.03], [-56.18, -1.68], [-56.25, -1.65], [-56.5, -1.75], [-57.03, -1.53], [-57.18, -1.18], [-57.25, -1.15], [-57.5, -1.25], [-58.03, -1.03], [-58.18, -0.68], [-58.53, -0.53], [-58.68, -0.18], [-59.03, -0.03], [-59.25, 0.5]]]]}, "2021-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.25, 0.5], [-59.03, 1.03], [-58.68, 1.18], [-58.53, 1.53], [-58.18, 1.68], [-58.15, 1.75], [-58.25, 2.0], [-58.03, 2.53], [-57.5, 2.75], [-56.97, 2.53], [-56.82, 2.18], [-56.75, 2.15], [-56.5, 2.25], [-56.25, 2.15], [-56.0, 2.25], [-55.5, 2.04], [-55.0, 2.25], [-54.47, 2.03], [-54.32, 1.68], [-54.25, 1.65], [-54.0, 1.75], [-53.47, 1.53], [-53.32, 1.18], [-52.97, 1.03], [-52.82, 0.68], [-52.47, 0.53], [-52.25, 0.0], [-52.35, -0.25], [-52.32, -0.32], [-51.97, -0.47], [-51.75, -1.0], [-51.96, -1.5], [-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], [-53.75, -3.65], [-54.0, -3.75], [-54.53, -3.53], [-54.68, -3.18], [-54.75, -3.15], [-55.0, -3.25], [-55.53, -3.03], [-55.75, -2.5], [-55.65, -2.25], [-55.68, -2.18], [-56.03, -2.03], [-56.18, -1.68], [-56.25, -1.65], [-56.5, 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"evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.792721900646768, 22.93281204706153, 22.283520735954255, 25.830142743711917]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.5772739830209552, -2.5922765904598535, -2.859929940849696, -1.9241062212063487]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.9436882119895813, -3.549600964706883, -4.182378498779542, -2.205518836187707]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0046689391151475, -1.972366926879038, -2.1198957194963426, -1.4989329499226924]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.445348730640133, -2.85535600826703, -2.6776071004290545, -1.6504062945010052]}}