{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:33:08.324700", "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-Nov-30_to_2022-Dec-04_309.5_-13.5"}, "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": 2022110001205}, "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 30 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 04 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": 54332.40658294679}, "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", "South-American-Monsoon"]}, "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": -13.5}, "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": 309.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "309.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 308.75}, "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": -13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.5, -12.75], [-49.97, -12.97], [-49.75, -13.5], [-49.97, -14.03], [-50.5, -14.25], [-51.03, -14.03], [-51.25, -13.5], [-51.03, -12.97], [-50.5, -12.75]]]]}, "2022-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.5, -12.75], [-49.97, -12.97], [-49.75, -13.5], [-49.97, -14.03], [-50.5, -14.25], [-51.03, -14.03], [-51.25, -13.5], [-51.03, -12.97], [-50.5, -12.75]]]]}, "2022-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.75, -13.0], [-51.53, -12.47], [-51.18, -12.32], [-51.03, -11.97], [-50.5, -11.75], [-50.2, -11.88], [-50.15, -11.75], [-50.25, -11.5], [-50.15, -11.25], [-50.25, -11.0], [-50.03, -10.47], [-49.5, -10.25], [-49.25, -10.35], [-49.0, -10.25], [-48.47, -10.47], [-48.32, -10.82], [-47.97, -10.97], [-47.75, -11.5], [-47.97, -12.03], [-48.32, -12.18], [-48.35, -12.25], [-48.25, -12.5], [-48.35, -12.75], [-48.25, -13.0], [-48.47, -13.53], [-48.82, -13.68], [-48.97, -14.03], [-49.5, -14.25], [-49.75, -14.15], [-50.0, -14.25], [-50.25, -14.15], [-50.5, -14.25], [-51.03, -14.03], [-51.18, -13.68], [-51.53, -13.53], [-51.75, -13.0]]]]}, "2022-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.75, -13.0], [-51.53, -12.47], [-51.18, -12.32], [-51.03, -11.97], [-50.5, -11.75], [-50.2, -11.88], [-50.15, -11.75], [-50.25, -11.5], [-50.15, -11.25], [-50.25, -11.0], [-50.03, -10.47], [-49.5, -10.25], [-49.25, -10.35], [-49.0, -10.25], [-48.47, -10.47], [-48.32, -10.82], [-47.97, -10.97], [-47.75, -11.5], [-47.97, -12.03], [-48.32, -12.18], [-48.35, -12.25], [-48.25, -12.5], [-48.35, -12.75], [-48.25, -13.0], [-48.47, -13.53], [-48.82, -13.68], [-48.97, -14.03], [-49.5, -14.25], [-49.75, -14.15], [-50.0, -14.25], [-50.25, -14.15], [-50.5, -14.25], [-51.03, -14.03], [-51.18, -13.68], [-51.53, -13.53], [-51.75, -13.0]]]]}, "2022-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.75, -13.0], [-51.53, -12.47], [-51.18, -12.32], [-51.03, -11.97], [-50.5, -11.75], [-50.2, -11.88], [-50.15, -11.75], [-50.25, -11.5], [-50.15, -11.25], [-50.25, -11.0], [-50.03, -10.47], [-49.5, -10.25], [-49.25, -10.35], [-49.0, -10.25], [-48.47, -10.47], [-48.32, -10.82], [-47.97, -10.97], [-47.75, -11.5], [-47.97, -12.03], [-48.32, -12.18], [-48.35, -12.25], [-48.25, -12.5], [-48.35, -12.75], [-48.25, -13.0], [-48.47, -13.53], [-48.82, -13.68], [-48.97, -14.03], [-49.5, -14.25], [-49.75, -14.15], [-50.0, -14.25], [-50.25, -14.15], [-50.5, -14.25], [-51.03, -14.03], [-51.18, -13.68], [-51.53, -13.53], [-51.75, -13.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1458748429361094}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2966091878835124}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.547927761845756, 24.786353002090777, 24.474794125489097, 24.131223570119175, 23.921352593223503]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.547927761845756, 24.786353002090777, 23.990871582198963, 23.78905312793586, 23.35852955388333]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.9867775609790783, -1.7520463902022243, -1.9927813537802654, -2.3433537842089405, -2.5456032270272053]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9867775609790783, -1.7520463902022243, -2.1903388015824703, -2.7130230974748315, -3.1458748429361094]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.120807554208797, -1.2514231553781179, -1.4084052772574567, -1.653192058003856, -1.7794960051833095]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.120807554208797, -1.2514231553781179, -1.5341394362647287, -2.069909367236263, -2.390548619247204]}}