{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:17.045394", "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": "2022-Mar-19_to_2022-Mar-21_306.0_-32.0"}, "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": 2022030000594}, "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": "March 19 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 21 2022"}, "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": 87075.35127101719}, "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", "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": -32.0}, "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": 304.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.03, -30.97], [-55.68, -30.82], [-55.53, -30.47], [-55.18, -30.32], [-55.15, -30.25], [-55.25, -30.0], [-55.03, -29.47], [-54.68, -29.32], [-54.53, -28.97], [-54.0, -28.75], [-53.47, -28.97], [-53.32, -29.32], [-52.97, -29.47], [-52.82, -29.82], [-52.47, -29.97], [-52.32, -30.32], [-52.25, -30.35], [-52.0, -30.25], [-51.47, -30.47], [-51.25, -31.0], [-51.47, -31.53], [-51.82, -31.68], [-51.97, -32.03], [-52.32, -32.18], [-52.47, -32.53], [-53.0, -32.75], [-53.25, -32.65], [-53.32, -32.68], [-53.47, -33.03], [-53.82, -33.18], [-53.97, -33.53], [-54.32, -33.68], [-54.47, -34.03], [-55.0, -34.25], [-55.53, -34.03], [-55.75, -33.5], [-55.65, -33.25], [-55.75, -33.0], [-55.62, -32.7], [-56.03, -32.53], [-56.25, -32.0], [-56.15, -31.75], [-56.25, -31.5], [-56.03, -30.97]]]]}, "2022-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.03, -30.97], [-55.68, -30.82], [-55.53, -30.47], [-55.18, -30.32], [-55.15, -30.25], [-55.25, -30.0], [-55.03, -29.47], [-54.68, -29.32], [-54.53, -28.97], [-54.0, -28.75], [-53.47, -28.97], [-53.32, -29.32], [-52.97, -29.47], [-52.82, -29.82], [-52.47, -29.97], [-52.32, -30.32], [-52.25, -30.35], [-52.0, -30.25], [-51.47, -30.47], [-51.25, -31.0], [-51.47, -31.53], [-51.82, -31.68], [-51.97, -32.03], [-52.32, -32.18], [-52.47, -32.53], [-53.0, -32.75], [-53.25, -32.65], [-53.32, -32.68], [-53.47, -33.03], [-53.82, -33.18], [-53.97, -33.53], [-54.32, -33.68], [-54.47, -34.03], [-55.0, -34.25], [-55.53, -34.03], [-55.75, -33.5], [-55.65, -33.25], [-55.75, -33.0], [-55.62, -32.7], [-56.03, -32.53], [-56.25, -32.0], [-56.15, -31.75], [-56.25, -31.5], [-56.03, -30.97]]]]}, "2022-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.03, -30.97], [-55.68, -30.82], [-55.53, -30.47], [-55.18, -30.32], [-55.15, -30.25], [-55.25, -30.0], [-55.03, -29.47], [-54.68, -29.32], [-54.53, -28.97], [-54.0, -28.75], [-53.47, -28.97], [-53.32, -29.32], [-52.97, -29.47], [-52.82, -29.82], [-52.47, -29.97], [-52.32, -30.32], [-52.25, -30.35], [-52.0, -30.25], [-51.47, -30.47], [-51.25, -31.0], [-51.47, -31.53], [-51.82, -31.68], [-51.97, -32.03], [-52.32, -32.18], [-52.47, -32.53], [-53.0, -32.75], [-53.25, -32.65], [-53.32, -32.68], [-53.47, -33.03], [-53.82, -33.18], [-53.97, -33.53], [-54.32, -33.68], [-54.47, -34.03], [-55.0, -34.25], [-55.53, -34.03], [-55.75, -33.5], [-55.65, -33.25], [-55.75, -33.0], [-55.62, -32.7], [-56.03, -32.53], [-56.25, -32.0], [-56.15, -31.75], [-56.25, -31.5], [-56.03, -30.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.830418389383169}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.014105474710744}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.135376519346664, 15.55015632236018, 17.358491540638056]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.764999051652069, 12.921897200808985, 16.00628712953386]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.307303537427365, -5.796047366879517, -3.9389655198253517]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.662055881139395, -6.830418389383169, -4.535231415018984]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.102059924257563, -2.291979527200391, -1.580487353760831]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4698546801075487, -2.6922503635450403, -1.974448139471312]}}