{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:37.316859", "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": "2016-Jan-30_to_2016-Feb-04_301.0_-20.0"}, "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": 2016010000821}, "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": "January 30 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 04 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 305539.38231523044}, "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": ["Bolivia", "Brazil", "Paraguay"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": -20.0}, "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": 301.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 304.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -21.53], [-57.25, -21.0], [-57.03, -20.47], [-56.5, -20.25], [-55.97, -20.47], [-55.75, -21.0], [-55.97, -21.53], [-56.5, -21.75], [-57.03, -21.53]]], [[[-57.75, -18.5], [-57.65, -18.25], [-57.75, -18.0], [-57.53, -17.47], [-57.0, -17.25], [-56.47, -17.47], [-56.25, -18.0], [-56.35, -18.25], [-56.25, -18.5], [-56.35, -18.75], [-56.25, -19.0], [-56.35, -19.25], [-56.25, -19.5], [-56.47, -20.03], [-57.0, -20.25], [-57.53, -20.03], [-57.75, -19.5], [-57.65, -19.25], [-57.75, -19.0], [-57.65, -18.75], [-57.75, -18.5]]]]}, "2016-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -18.0], [-62.03, -17.47], [-61.5, -17.25], [-61.25, -17.35], [-61.0, -17.25], [-60.75, -17.35], [-60.5, -17.25], [-60.25, -17.35], [-60.0, -17.25], [-59.47, -17.47], [-59.32, -17.82], [-59.25, -17.85], [-59.0, -17.75], [-58.75, -17.85], [-58.5, -17.75], [-58.25, -17.85], [-58.0, -17.75], [-57.7, -17.88], [-57.53, -17.47], [-57.0, -17.25], [-56.47, -17.47], [-56.25, -18.0], [-56.35, -18.25], [-56.25, -18.5], [-56.35, -18.75], [-56.25, -19.0], [-56.35, -19.25], [-56.25, -19.5], [-56.46, -20.0], [-56.32, -20.32], [-55.97, -20.47], [-55.75, -21.0], [-55.85, -21.25], [-55.82, -21.32], [-55.75, -21.35], [-55.5, -21.25], [-54.97, -21.47], [-54.75, -22.0], [-54.85, -22.25], [-54.75, -22.5], [-54.85, -22.75], [-54.75, -23.0], [-54.97, -23.53], [-55.5, -23.75], [-55.75, -23.65], [-55.82, -23.68], [-55.97, -24.03], [-56.5, -24.25], [-57.03, -24.03], [-57.18, -23.68], [-57.25, -23.65], [-57.5, -23.75], [-58.03, -23.53], [-58.25, -23.0], [-58.15, -22.75], [-58.18, -22.68], [-58.25, -22.65], [-58.5, -22.75], [-58.75, -22.65], [-59.0, -22.75], [-59.53, -22.53], [-59.68, -22.18], [-60.03, -22.03], [-60.25, -21.5], [-60.15, -21.25], [-60.25, -21.0], [-60.15, -20.75], [-60.18, -20.68], [-60.53, -20.53], [-60.7, -20.12], [-61.0, -20.25], [-61.53, -20.03], [-61.75, -19.5], [-61.65, -19.25], [-61.75, -19.0], [-61.65, -18.75], [-61.68, -18.68], [-62.03, -18.53], [-62.25, -18.0]]]]}, "2016-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -18.0], [-62.03, -17.47], [-61.5, -17.25], [-61.25, -17.35], [-61.0, -17.25], [-60.75, -17.35], [-60.5, -17.25], [-60.25, -17.35], [-60.0, -17.25], [-59.47, -17.47], [-59.32, -17.82], [-59.25, -17.85], [-59.0, -17.75], [-58.75, -17.85], [-58.5, -17.75], [-58.25, -17.85], [-58.0, -17.75], [-57.7, -17.88], [-57.53, -17.47], [-57.0, -17.25], [-56.47, -17.47], [-56.25, -18.0], [-56.35, -18.25], [-56.25, -18.5], [-56.35, -18.75], [-56.25, -19.0], [-56.35, -19.25], [-56.25, -19.5], [-56.46, -20.0], [-56.32, -20.32], [-55.97, -20.47], [-55.75, -21.0], [-55.85, -21.25], [-55.82, -21.32], [-55.75, -21.35], [-55.5, -21.25], [-54.97, -21.47], [-54.75, -22.0], [-54.85, -22.25], [-54.75, -22.5], [-54.85, -22.75], [-54.75, -23.0], [-54.96, -23.5], [-54.75, -24.0], [-54.97, -24.53], [-55.32, -24.68], [-55.47, -25.03], [-56.0, -25.25], [-56.25, -25.15], [-56.5, -25.25], [-57.03, -25.03], [-57.18, -24.68], [-57.25, -24.65], [-57.5, -24.75], [-57.75, -24.65], [-58.0, -24.75], [-58.53, -24.53], [-58.68, -24.18], [-58.75, -24.15], [-59.0, -24.25], [-59.53, -24.03], [-59.68, -23.68], [-60.03, -23.53], [-60.25, -23.0], [-60.15, -22.75], [-60.18, -22.68], [-60.53, -22.53], [-60.68, -22.18], [-61.03, -22.03], [-61.25, -21.5], [-61.15, -21.25], [-61.18, -21.18], [-61.53, -21.03], [-61.75, -20.5], [-61.65, -20.25], [-61.75, -20.0], [-61.65, -19.75], [-61.75, -19.5], [-61.65, -19.25], [-61.75, -19.0], [-61.65, -18.75], [-61.68, -18.68], [-62.03, -18.53], [-62.25, -18.0]]]]}, "2016-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -18.0], [-62.03, -17.47], [-61.5, -17.25], [-61.25, -17.35], [-61.0, -17.25], [-60.75, -17.35], [-60.5, -17.25], [-60.25, -17.35], [-60.0, -17.25], [-59.47, -17.47], [-59.32, -17.82], [-59.25, -17.85], [-59.0, -17.75], [-58.75, -17.85], [-58.5, -17.75], [-58.25, -17.85], [-58.0, -17.75], [-57.47, -17.97], [-57.25, -18.5], [-57.35, -18.75], [-57.32, -18.82], [-56.97, -18.97], [-56.75, -19.5], [-56.85, -19.75], [-56.82, -19.82], [-56.47, -19.97], [-56.32, -20.32], [-55.97, -20.47], [-55.75, -21.0], [-55.85, -21.25], [-55.82, -21.32], [-55.75, -21.35], [-55.5, -21.25], [-54.97, -21.47], [-54.75, -22.0], [-54.85, -22.25], [-54.75, -22.5], [-54.85, -22.75], [-54.75, -23.0], [-54.96, -23.5], [-54.75, -24.0], [-54.97, -24.53], [-55.32, -24.68], [-55.47, -25.03], [-56.0, -25.25], [-56.25, -25.15], [-56.5, -25.25], [-57.03, -25.03], [-57.18, -24.68], [-57.25, -24.65], [-57.5, -24.75], [-57.75, -24.65], [-58.0, -24.75], [-58.53, -24.53], [-58.68, -24.18], [-58.75, -24.15], [-59.0, -24.25], [-59.53, -24.03], [-59.68, -23.68], [-60.03, -23.53], [-60.25, -23.0], [-60.15, -22.75], [-60.18, -22.68], [-60.53, -22.53], [-60.68, -22.18], [-61.03, -22.03], [-61.25, -21.5], [-61.15, -21.25], [-61.18, -21.18], [-61.53, -21.03], [-61.75, -20.5], [-61.65, -20.25], [-61.75, -20.0], [-61.65, -19.75], [-61.75, -19.5], [-61.65, -19.25], [-61.75, -19.0], [-61.65, -18.75], [-61.68, -18.68], [-62.03, -18.53], [-62.25, -18.0]]]]}, "2016-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.65, -19.75], [-61.75, -19.5], [-61.53, -18.97], [-61.0, -18.75], [-60.47, -18.97], [-60.32, -19.32], [-60.25, -19.35], [-60.0, -19.25], [-59.75, -19.35], [-59.5, -19.25], [-59.25, -19.35], [-59.0, -19.25], [-58.47, -19.47], [-58.25, -20.0], [-58.46, -20.5], [-58.25, -21.0], [-58.35, -21.25], [-58.32, -21.32], [-58.25, -21.35], [-58.0, -21.25], [-57.47, -21.47], [-57.25, -22.0], [-57.35, -22.25], [-57.32, -22.32], [-57.25, -22.35], [-57.0, -22.25], [-56.47, -22.47], [-56.32, -22.82], [-55.97, -22.97], [-55.82, -23.32], [-55.75, -23.35], [-55.5, -23.25], [-54.97, -23.47], [-54.75, -24.0], [-54.97, -24.53], [-55.32, -24.68], [-55.47, -25.03], [-56.0, -25.25], [-56.25, -25.15], [-56.5, -25.25], [-57.03, -25.03], [-57.18, -24.68], [-57.25, -24.65], [-57.5, -24.75], [-57.75, -24.65], [-58.0, -24.75], [-58.53, -24.53], [-58.68, -24.18], [-58.75, -24.15], [-59.0, -24.25], [-59.53, -24.03], [-59.68, -23.68], [-60.03, -23.53], [-60.25, -23.0], [-60.15, -22.75], [-60.18, -22.68], [-60.53, -22.53], [-60.68, -22.18], [-61.03, -22.03], [-61.25, -21.5], [-61.15, -21.25], [-61.18, -21.18], [-61.53, -21.03], [-61.75, -20.5], [-61.65, -20.25], [-61.75, -20.0], [-61.65, -19.75]]]]}, "2016-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.0, -19.25], [-58.47, -19.47], [-58.25, -20.0], [-58.47, -20.53], [-59.0, -20.75], [-59.53, -20.53], [-59.75, -20.0], [-59.53, -19.47], [-59.0, -19.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.58897194047745}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.2826972103232053}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.4776902736931, 24.69114409732265, 24.57679596173648, 24.45055169461051, 25.13574306864257, 26.550718146467943]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.720345070524388, 22.283358871413895, 22.477227378408486, 22.83587355614361, 23.16795088409856, 26.550718146467943]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9716013957768381, -2.964030235215253, -3.3285080022663136, -3.500541942930402, -3.367418001202076, -2.361548597833007]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.14837778000134, -4.07061680772307, -4.980397635250199, -5.58897194047745, -4.342352793494172, -2.361548597833007]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2676933457093653, -1.5909129404289555, -1.6207141234237732, -1.68314935819012, -1.4292716245373325, -1.092918502740865]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4315794881135337, -2.1249356921094638, -2.1656322572108118, -2.268423103468655, -1.7213432621355242, -1.092918502740865]}}