{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:54.634683", "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-May-10_to_2022-May-14_312.5_-12.5"}, "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": 2022050000416}, "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": "May 10 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 14 2022"}, "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": 51203.340089959274}, "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.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": -12.5}, "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": 312.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "312.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 310.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 315.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, -11.97], [-48.0, -11.75], [-47.75, -11.85], [-47.5, -11.75], [-46.97, -11.97], [-46.82, -12.32], [-46.75, -12.35], [-46.5, -12.25], [-45.97, -12.47], [-45.82, -12.82], [-45.75, -12.85], [-45.5, -12.75], [-44.97, -12.97], [-44.82, -13.32], [-44.47, -13.47], [-44.25, -14.0], [-44.47, -14.53], [-45.0, -14.75], [-45.25, -14.65], [-45.32, -14.68], [-45.47, -15.03], [-46.0, -15.25], [-46.53, -15.03], [-46.75, -14.5], [-46.54, -14.0], [-46.68, -13.68], [-46.75, -13.65], [-47.0, -13.75], [-47.25, -13.65], [-47.32, -13.68], [-47.47, -14.03], [-48.0, -14.25], [-48.53, -14.03], [-48.75, -13.5], [-48.54, -13.0], [-48.75, -12.5], [-48.53, -11.97]]]]}, "2022-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.5, -11.25], [-48.25, -11.35], [-48.0, -11.25], [-47.47, -11.47], [-47.32, -11.82], [-47.0, -11.96], [-46.5, -11.75], [-45.97, -11.97], [-45.75, -12.5], [-45.85, -12.75], [-45.82, -12.82], [-45.75, -12.85], [-45.5, -12.75], [-44.97, -12.97], [-44.82, -13.32], [-44.47, -13.47], [-44.25, -14.0], [-44.47, -14.53], [-45.0, -14.75], [-45.25, -14.65], [-45.32, -14.68], [-45.47, -15.03], [-46.0, -15.25], [-46.53, -15.03], [-46.75, -14.5], [-46.54, -14.0], [-46.68, -13.68], [-46.75, -13.65], [-47.0, -13.75], [-47.25, -13.65], [-47.32, -13.68], [-47.47, -14.03], [-48.0, -14.25], [-48.53, -14.03], [-48.75, -13.5], [-48.62, -13.2], [-48.75, -13.15], [-49.0, -13.25], [-49.53, -13.03], [-49.75, -12.5], [-49.53, -11.97], [-49.18, -11.82], [-49.03, -11.47], [-48.5, -11.25]]]]}, "2022-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.5, -11.25], [-48.25, -11.35], [-48.0, -11.25], [-47.75, -11.35], [-47.5, -11.25], [-46.97, -11.47], [-46.8, -11.88], [-46.5, -11.75], [-45.97, -11.97], [-45.75, -12.5], [-45.85, -12.75], [-45.82, -12.82], [-45.75, -12.85], [-45.5, -12.75], [-44.97, -12.97], [-44.82, -13.32], [-44.47, -13.47], [-44.25, -14.0], [-44.47, -14.53], [-45.0, -14.75], [-45.25, -14.65], [-45.32, -14.68], [-45.47, -15.03], [-46.0, -15.25], [-46.53, -15.03], [-46.75, -14.5], [-46.54, -14.0], [-46.68, -13.68], [-46.75, -13.65], [-47.0, -13.75], [-47.25, -13.65], [-47.32, -13.68], [-47.47, -14.03], [-48.0, -14.25], [-48.53, -14.03], [-48.75, -13.5], [-48.62, -13.2], [-48.75, -13.15], [-49.0, -13.25], [-49.53, -13.03], [-49.75, -12.5], [-49.53, -11.97], [-49.18, -11.82], [-49.03, -11.47], [-48.5, -11.25]]]]}, "2022-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.5, -11.25], [-48.25, -11.35], [-48.0, -11.25], [-47.75, -11.35], [-47.5, -11.25], [-46.97, -11.47], [-46.8, -11.88], [-46.5, -11.75], [-45.97, -11.97], [-45.75, -12.5], [-45.97, -13.03], [-46.5, -13.25], [-46.8, -13.12], [-46.97, -13.53], [-47.5, -13.75], [-48.03, -13.53], [-48.18, -13.18], [-48.25, -13.15], [-48.5, -13.25], [-48.75, -13.15], [-49.0, -13.25], [-49.53, -13.03], [-49.75, -12.5], [-49.53, -11.97], [-49.18, -11.82], [-49.03, -11.47], [-48.5, -11.25]]]]}, "2022-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.75, -12.5], [-48.53, -11.97], [-48.18, -11.82], [-48.03, -11.47], [-47.5, -11.25], [-46.97, -11.47], [-46.75, -12.0], [-46.85, -12.25], [-46.75, -12.5], [-46.85, -12.75], [-46.75, -13.0], [-46.97, -13.53], [-47.5, -13.75], [-48.03, -13.53], [-48.18, -13.18], [-48.53, -13.03], [-48.75, -12.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.063502389744201}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.954104268287695}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.787934241618473, 23.076486921814933, 23.36421278026819, 24.713513840098926, 24.97717113847824]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.79650330476892, 19.654207021941204, 20.759230064597887, 24.10145082010638, 24.83221518613209]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7811931377033674, -2.137042545796902, -1.9240318657889106, -1.995305378962232, -1.7329619789598922]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9405969927487376, -3.063502389744201, -2.5245632871921657, -2.543502548778008, -1.7967010922854456]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.46307368178679, -1.7911825338592327, -1.6241189676952346, -1.7153708351490753, -1.4421662865265577]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5947978886277479, -2.3856681199426184, -1.9897685555646067, -2.234454853182412, -1.5830344952346438]}}