{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:25.051112", "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": "2017-Nov-16_to_2017-Nov-19_303.0_-31.5"}, "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": 2017110000551}, "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 16 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 19 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 95943.11982817217}, "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", "Uruguay"]}, "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": -31.5}, "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": 303.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.0\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": 303.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -29.5], [-62.03, -28.97], [-61.5, -28.75], [-61.25, -28.85], [-61.0, -28.75], [-60.75, -28.85], [-60.5, -28.75], [-60.25, -28.85], [-60.0, -28.75], [-59.75, -28.85], [-59.5, -28.75], [-58.97, -28.97], [-58.82, -29.32], [-58.47, -29.47], [-58.32, -29.82], [-58.25, -29.85], [-58.0, -29.75], [-57.47, -29.97], [-57.32, -30.32], [-57.25, -30.35], [-57.0, -30.25], [-56.47, -30.47], [-56.25, -31.0], [-56.35, -31.25], [-56.25, -31.5], [-56.47, -32.03], [-57.0, -32.25], [-57.25, -32.15], [-57.5, -32.25], [-57.75, -32.15], [-58.0, -32.25], [-58.25, -32.15], [-58.5, -32.25], [-59.03, -32.03], [-59.18, -31.68], [-59.25, -31.65], [-59.5, -31.75], [-59.75, -31.65], [-60.0, -31.75], [-60.25, -31.65], [-60.5, -31.75], [-61.03, -31.53], [-61.18, -31.18], [-61.53, -31.03], [-61.75, -30.5], [-61.65, -30.25], [-61.68, -30.18], [-62.03, -30.03], [-62.25, -29.5]]]]}, "2017-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -29.5], [-62.03, -28.97], [-61.5, -28.75], [-61.25, -28.85], [-61.0, -28.75], [-60.75, -28.85], [-60.5, -28.75], [-60.25, -28.85], [-60.0, -28.75], [-59.75, -28.85], [-59.5, -28.75], [-59.0, -28.96], [-58.5, -28.75], [-58.25, -28.85], [-58.0, -28.75], [-57.75, -28.85], [-57.5, -28.75], [-56.97, -28.97], [-56.82, -29.32], [-56.47, -29.47], [-56.32, -29.82], [-55.97, -29.97], [-55.75, -30.5], [-55.85, -30.75], [-55.75, -31.0], [-55.97, -31.53], [-56.32, -31.68], [-56.47, -32.03], [-57.0, -32.25], [-57.25, -32.15], [-57.5, -32.25], [-57.75, -32.15], [-58.0, -32.25], [-58.25, -32.15], [-58.5, -32.25], [-59.03, -32.03], [-59.18, -31.68], [-59.25, -31.65], [-59.5, -31.75], [-59.75, -31.65], [-60.0, -31.75], [-60.25, -31.65], [-60.5, -31.75], [-61.03, -31.53], [-61.18, -31.18], [-61.53, -31.03], [-61.75, -30.5], [-61.65, -30.25], [-61.68, -30.18], [-62.03, -30.03], [-62.25, -29.5]]]]}, "2017-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -29.5], [-62.03, -28.97], [-61.5, -28.75], [-61.25, -28.85], [-61.0, -28.75], [-60.75, -28.85], [-60.5, -28.75], [-60.25, -28.85], [-60.0, -28.75], [-59.75, -28.85], [-59.5, -28.75], [-59.0, -28.96], [-58.5, -28.75], [-58.25, -28.85], [-58.0, -28.75], [-57.75, -28.85], [-57.5, -28.75], [-56.97, -28.97], [-56.82, -29.32], [-56.47, -29.47], [-56.32, -29.82], [-55.97, -29.97], [-55.75, -30.5], [-55.85, -30.75], [-55.75, -31.0], [-55.97, -31.53], [-56.32, -31.68], [-56.47, -32.03], [-57.0, -32.25], [-57.25, -32.15], [-57.5, -32.25], [-57.75, -32.15], [-58.0, -32.25], [-58.25, -32.15], [-58.5, -32.25], [-59.03, -32.03], [-59.18, -31.68], [-59.25, -31.65], [-59.5, -31.75], [-59.75, -31.65], [-60.0, -31.75], [-60.25, -31.65], [-60.5, -31.75], [-61.03, -31.53], [-61.18, -31.18], [-61.53, -31.03], [-61.75, -30.5], [-61.65, -30.25], [-61.68, -30.18], [-62.03, -30.03], [-62.25, -29.5]]]]}, "2017-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.03, -30.03], [-59.25, -29.5], [-59.03, -28.97], [-58.5, -28.75], [-58.25, -28.85], [-58.0, -28.75], [-57.75, -28.85], [-57.5, -28.75], [-56.97, -28.97], [-56.82, -29.32], [-56.47, -29.47], [-56.32, -29.82], [-55.97, -29.97], [-55.75, -30.5], [-55.85, -30.75], [-55.75, -31.0], [-55.97, -31.53], [-56.32, -31.68], [-56.47, -32.03], [-57.0, -32.25], [-57.53, -32.03], [-57.75, -31.5], [-57.54, -31.0], [-57.75, -30.5], [-57.65, -30.25], [-57.68, -30.18], [-57.75, -30.15], [-58.0, -30.25], [-58.25, -30.15], [-58.5, -30.25], [-59.03, -30.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.984779201325921}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.006858644854241}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.065722796632087, 17.762168713051494, 18.246453427941333, 18.34698301350096]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.165157108162305, 16.290136155569087, 16.584323113780044, 17.445109213556634]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.9702979505762332, -4.28844279759419, -3.855352348539041, -3.554040807700659]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.371334079282917, -4.984779201325921, -4.280208387473749, -3.73152477633937]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3986319804487266, -1.543854763895684, -1.425757443353114, -1.3829783536038276]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5587393623800105, -1.7967922930384275, -1.6061599784113851, -1.4705458068824127]}}