{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:16.569651", "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-Sep-04_to_2022-Sep-06_310.5_-24.5"}, "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": 2022090000236}, "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": "September 04 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 06 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": 98604.23370272835}, "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": []}, "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": -24.5}, "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": 310.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "310.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 306.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 311.75}, "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": -22.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.5, -23.75], [-52.25, -23.85], [-52.0, -23.75], [-51.75, -23.85], [-51.68, -23.82], [-51.53, -23.47], [-51.18, -23.32], [-51.15, -23.25], [-51.25, -23.0], [-51.15, -22.75], [-51.25, -22.5], [-51.03, -21.97], [-50.5, -21.75], [-49.97, -21.97], [-49.82, -22.32], [-49.75, -22.35], [-49.5, -22.25], [-49.25, -22.35], [-49.0, -22.25], [-48.47, -22.47], [-48.25, -23.0], [-48.35, -23.25], [-48.32, -23.32], [-47.97, -23.47], [-47.75, -24.0], [-47.97, -24.53], [-48.32, -24.68], [-48.35, -24.75], [-48.25, -25.0], [-48.47, -25.53], [-49.0, -25.75], [-49.25, -25.65], [-49.32, -25.68], [-49.47, -26.03], [-50.0, -26.25], [-50.25, -26.15], [-50.5, -26.25], [-51.0, -26.04], [-51.5, -26.25], [-52.03, -26.03], [-52.18, -25.68], [-52.25, -25.65], [-52.5, -25.75], [-52.75, -25.65], [-53.0, -25.75], [-53.53, -25.53], [-53.75, -25.0], [-53.53, -24.47], [-53.18, -24.32], [-53.03, -23.97], [-52.5, -23.75]]]]}, "2022-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.5, -23.75], [-52.25, -23.85], [-52.0, -23.75], [-51.75, -23.85], [-51.68, -23.82], [-51.53, -23.47], [-51.18, -23.32], [-51.15, -23.25], [-51.25, -23.0], [-51.15, -22.75], [-51.25, -22.5], [-51.03, -21.97], [-50.5, -21.75], [-49.97, -21.97], [-49.82, -22.32], [-49.75, -22.35], [-49.5, -22.25], [-49.25, -22.35], [-49.0, -22.25], [-48.47, -22.47], [-48.25, -23.0], [-48.35, -23.25], [-48.32, -23.32], [-47.97, -23.47], [-47.75, -24.0], [-47.97, -24.53], [-48.32, -24.68], [-48.35, -24.75], [-48.25, -25.0], [-48.47, -25.53], [-49.0, -25.75], [-49.25, -25.65], [-49.32, -25.68], [-49.47, -26.03], [-50.0, -26.25], [-50.25, -26.15], [-50.5, -26.25], [-51.0, -26.04], [-51.5, -26.25], [-52.03, -26.03], [-52.18, -25.68], [-52.25, -25.65], [-52.5, -25.75], [-52.75, -25.65], [-53.0, -25.75], [-53.53, -25.53], [-53.75, -25.0], [-53.53, -24.47], [-53.18, -24.32], [-53.03, -23.97], [-52.5, -23.75]]]]}, "2022-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.5, -23.75], [-52.25, -23.85], [-52.0, -23.75], [-51.75, -23.85], [-51.68, -23.82], [-51.53, -23.47], [-51.18, -23.32], [-51.15, -23.25], [-51.25, -23.0], [-51.15, -22.75], [-51.25, -22.5], [-51.03, -21.97], [-50.5, -21.75], [-49.97, -21.97], [-49.82, -22.32], [-49.75, -22.35], [-49.5, -22.25], [-49.25, -22.35], [-49.0, -22.25], [-48.47, -22.47], [-48.25, -23.0], [-48.35, -23.25], [-48.32, -23.32], [-47.97, -23.47], [-47.75, -24.0], [-47.97, -24.53], [-48.32, -24.68], [-48.35, -24.75], [-48.25, -25.0], [-48.47, -25.53], [-49.0, -25.75], [-49.25, -25.65], [-49.32, -25.68], [-49.47, -26.03], [-50.0, -26.25], [-50.25, -26.15], [-50.5, -26.25], [-51.0, -26.04], [-51.5, -26.25], [-52.03, -26.03], [-52.18, -25.68], [-52.25, -25.65], [-52.5, -25.75], [-52.75, -25.65], [-53.0, -25.75], [-53.53, -25.53], [-53.75, -25.0], [-53.53, -24.47], [-53.18, -24.32], [-53.03, -23.97], [-52.5, -23.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.071489615476196}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.602131782395407}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.89293317479843, 12.525117108737163, 13.624638992952612]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.774383068637235, 9.359017310774846, 11.043016404573848]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.644863405700291, -6.1033608342156676, -5.058171107270261]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.071489615476196, -7.053286536105702, -5.903100097357594]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7408884510205287, -1.8525566743721258, -1.524780363565594]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.227134646910387, -2.04002074407703, -1.7893453210608359]}}