{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:22.952700", "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-03_to_2020-Dec-07_307.0_-25.5"}, "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": 2020120000164}, "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 03 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 07 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 58939.48286580904}, "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", "Paraguay"]}, "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": -25.5}, "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": 307.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "307.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 305.25}, "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": -26.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.53, -26.53], [-54.75, -26.0], [-54.53, -25.47], [-54.0, -25.25], [-53.75, -25.35], [-53.68, -25.32], [-53.53, -24.97], [-53.0, -24.75], [-52.47, -24.97], [-52.25, -25.5], [-52.47, -26.03], [-52.82, -26.18], [-52.97, -26.53], [-53.5, -26.75], [-53.75, -26.65], [-54.0, -26.75], [-54.53, -26.53]]]]}, "2020-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.15, -24.75], [-55.25, -24.5], [-55.15, -24.25], [-55.25, -24.0], [-55.15, -23.75], [-55.25, -23.5], [-55.03, -22.97], [-54.5, -22.75], [-54.25, -22.85], [-54.0, -22.75], [-53.47, -22.97], [-53.32, -23.32], [-53.25, -23.35], [-53.0, -23.25], [-52.47, -23.47], [-52.25, -24.0], [-52.35, -24.25], [-52.32, -24.32], [-51.97, -24.47], [-51.75, -25.0], [-51.97, -25.53], [-52.32, -25.68], [-52.47, -26.03], [-52.82, -26.18], [-52.97, -26.53], [-53.5, -26.75], [-53.75, -26.65], [-54.0, -26.75], [-54.53, -26.53], [-54.68, -26.18], [-55.03, -26.03], [-55.25, -25.5], [-55.15, -25.25], [-55.25, -25.0], [-55.15, -24.75]]]]}, "2020-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.15, -24.75], [-55.25, -24.5], [-55.15, -24.25], [-55.25, -24.0], [-55.15, -23.75], [-55.25, -23.5], [-55.03, -22.97], [-54.5, -22.75], [-54.25, -22.85], [-54.0, -22.75], [-53.47, -22.97], [-53.32, -23.32], [-53.25, -23.35], [-53.0, -23.25], [-52.47, -23.47], [-52.25, -24.0], [-52.35, -24.25], [-52.32, -24.32], [-51.97, -24.47], [-51.75, -25.0], [-51.97, -25.53], [-52.32, -25.68], [-52.47, -26.03], [-52.82, -26.18], [-52.97, -26.53], [-53.5, -26.75], [-53.75, -26.65], [-54.0, -26.75], [-54.53, -26.53], [-54.68, -26.18], [-55.03, -26.03], [-55.25, -25.5], [-55.15, -25.25], [-55.25, -25.0], [-55.15, -24.75]]]]}, "2020-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-55.15, -24.75], [-55.25, -24.5], [-55.15, -24.25], [-55.25, -24.0], [-55.15, -23.75], [-55.25, -23.5], [-55.03, -22.97], [-54.5, -22.75], [-54.25, -22.85], [-54.0, -22.75], [-53.47, -22.97], [-53.32, -23.32], [-53.25, -23.35], [-53.0, -23.25], [-52.47, -23.47], [-52.25, -24.0], [-52.35, -24.25], [-52.32, -24.32], [-51.97, -24.47], [-51.75, -25.0], [-51.97, -25.53], [-52.32, -25.68], [-52.47, -26.03], [-52.82, -26.18], [-52.97, -26.53], [-53.5, -26.75], [-53.75, -26.65], [-54.0, -26.75], [-54.53, -26.53], [-54.68, -26.18], [-55.03, -26.03], [-55.25, -25.5], [-55.15, -25.25], [-55.25, -25.0], [-55.15, -24.75]]]]}, "2020-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.0, -23.25], [-52.47, -23.47], [-52.25, -24.0], [-52.47, -24.53], [-53.0, -24.75], [-53.53, -24.53], [-53.75, -24.0], [-53.53, -23.47], [-53.0, -23.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.8061977184693205}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.735885420091615}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.824129786113588, 21.78632608365706, 21.77734096251328, 21.61615650072548, 22.57484169913272]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.269835193266942, 19.996311389144182, 20.119643099559255, 19.509433698917803, 22.57484169913272]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.5531221680997382, -2.677941674381711, -2.6981382196759167, -2.8800543549282582, -2.266137413135368]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8339947855119476, -3.349693859256945, -3.2744657695039905, -3.8061977184693205, -2.266137413135368]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4969587760356784, -1.5851655272898935, -1.5582648858241133, -1.6350099734495591, -1.3101440737258891]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.591557839576479, -1.8492269357614284, -1.7146472206495864, -2.229762954766743, -1.3101440737258891]}}