{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:53.673842", "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-Mar-18_to_2016-Mar-21_297.0_-26.5"}, "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": 2016030000409}, "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": "March 18 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 21 2016"}, "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": 472873.86187765986}, "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"]}, "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": -26.5}, "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": 297.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "297.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 300.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.0, -32.25], [-65.47, -32.47], [-65.25, -33.0], [-65.47, -33.53], [-66.0, -33.75], [-66.53, -33.53], [-66.75, -33.0], [-66.53, -32.47], [-66.0, -32.25]]]]}, "2016-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.25, -30.5], [-68.03, -29.97], [-67.68, -29.82], [-67.53, -29.47], [-67.0, -29.25], [-66.75, -29.35], [-66.68, -29.32], [-66.65, -29.25], [-66.75, -29.0], [-66.53, -28.47], [-66.12, -28.3], [-66.25, -28.0], [-66.15, -27.75], [-66.25, -27.5], [-66.15, -27.25], [-66.25, -27.0], [-66.03, -26.47], [-65.68, -26.32], [-65.53, -25.97], [-65.18, -25.82], [-65.15, -25.75], [-65.25, -25.5], [-65.15, -25.25], [-65.25, -25.0], [-65.04, -24.5], [-65.25, -24.0], [-65.15, -23.75], [-65.25, -23.5], [-65.15, -23.25], [-65.25, -23.0], [-65.03, -22.47], [-64.68, -22.32], [-64.53, -21.97], [-64.18, -21.82], [-64.03, -21.47], [-63.5, -21.25], [-62.97, -21.47], [-62.75, -22.0], [-62.85, -22.25], [-62.82, -22.32], [-62.75, -22.35], [-62.5, -22.25], [-61.97, -22.47], [-61.82, -22.82], [-61.75, -22.85], [-61.5, -22.75], [-60.97, -22.97], [-60.82, -23.32], [-60.47, -23.47], [-60.25, -24.0], [-60.35, -24.25], [-60.25, -24.5], [-60.35, -24.75], [-60.25, -25.0], [-60.35, -25.25], [-60.25, -25.5], [-60.35, -25.75], [-60.25, -26.0], [-60.35, -26.25], [-60.25, -26.5], [-60.35, -26.75], [-60.25, -27.0], [-60.35, -27.25], [-60.25, -27.5], [-60.35, -27.75], [-60.32, -27.82], [-59.97, -27.97], [-59.75, -28.5], [-59.85, -28.75], [-59.82, -28.82], [-59.47, -28.97], [-59.25, -29.5], [-59.35, -29.75], [-59.25, -30.0], [-59.47, -30.53], [-60.0, -30.75], [-60.25, -30.65], [-60.5, -30.75], [-61.03, -30.53], [-61.18, -30.18], [-61.25, -30.15], [-61.5, -30.25], [-61.75, -30.15], [-61.82, -30.18], [-61.85, -30.25], [-61.75, -30.5], [-61.85, -30.75], [-61.75, -31.0], [-61.85, -31.25], [-61.82, -31.32], [-61.47, -31.47], [-61.25, -32.0], [-61.35, -32.25], [-61.25, -32.5], [-61.47, -33.03], [-62.0, -33.25], [-62.25, -33.15], [-62.5, -33.25], [-63.03, -33.03], [-63.18, -32.68], [-63.53, -32.53], [-63.68, -32.18], [-64.03, -32.03], [-64.18, -31.68], [-64.53, -31.53], [-64.68, -31.18], [-64.75, -31.15], [-65.0, -31.25], [-65.25, -31.15], [-65.32, -31.18], [-65.35, -31.25], [-65.25, -31.5], [-65.35, -31.75], [-65.25, -32.0], [-65.46, -32.5], [-65.25, -33.0], [-65.47, -33.53], [-66.0, -33.75], [-66.53, -33.53], [-66.68, -33.18], [-66.75, -33.15], [-67.0, -33.25], [-67.53, -33.03], [-67.75, -32.5], [-67.65, -32.25], [-67.75, -32.0], [-67.54, -31.5], [-67.68, -31.18], [-68.03, -31.03], [-68.25, -30.5]]]]}, "2016-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.25, -30.5], [-68.03, -29.97], [-67.68, -29.82], [-67.53, -29.47], [-67.0, -29.25], [-66.75, -29.35], [-66.68, -29.32], [-66.65, -29.25], [-66.75, -29.0], [-66.53, -28.47], [-66.12, -28.3], [-66.25, -28.0], [-66.15, -27.75], [-66.25, -27.5], [-66.15, -27.25], [-66.25, -27.0], [-66.03, -26.47], [-65.68, -26.32], [-65.53, -25.97], [-65.18, -25.82], [-65.15, -25.75], [-65.25, -25.5], [-65.15, -25.25], [-65.25, -25.0], [-65.04, -24.5], [-65.25, -24.0], [-65.15, -23.75], [-65.25, -23.5], [-65.15, -23.25], [-65.25, -23.0], [-65.03, -22.47], [-64.68, -22.32], [-64.53, -21.97], [-64.18, -21.82], [-64.03, -21.47], [-63.5, -21.25], [-62.97, -21.47], [-62.75, -22.0], [-62.85, -22.25], [-62.82, -22.32], [-62.75, -22.35], [-62.5, -22.25], [-61.97, -22.47], [-61.82, -22.82], [-61.75, -22.85], [-61.5, -22.75], [-60.97, -22.97], [-60.82, -23.32], [-60.47, -23.47], [-60.25, -24.0], [-60.35, -24.25], [-60.25, -24.5], [-60.35, -24.75], [-60.25, -25.0], [-60.35, -25.25], [-60.25, -25.5], [-60.35, -25.75], [-60.25, -26.0], [-60.35, -26.25], [-60.25, -26.5], [-60.35, -26.75], [-60.25, -27.0], [-60.35, -27.25], [-60.25, -27.5], [-60.35, -27.75], [-60.32, -27.82], [-59.97, -27.97], [-59.75, -28.5], [-59.85, -28.75], [-59.82, -28.82], [-59.47, -28.97], [-59.25, -29.5], [-59.35, -29.75], [-59.25, -30.0], [-59.47, -30.53], [-60.0, -30.75], [-60.25, -30.65], [-60.5, -30.75], [-61.03, -30.53], [-61.18, -30.18], [-61.25, -30.15], [-61.5, -30.25], [-61.75, -30.15], [-61.82, -30.18], [-61.85, -30.25], [-61.75, -30.5], [-61.85, -30.75], [-61.75, -31.0], [-61.85, -31.25], [-61.82, -31.32], [-61.47, -31.47], [-61.25, -32.0], [-61.35, -32.25], [-61.25, -32.5], [-61.47, -33.03], [-62.0, -33.25], [-62.25, -33.15], [-62.5, -33.25], [-63.03, -33.03], [-63.18, -32.68], [-63.53, -32.53], [-63.68, -32.18], [-64.03, -32.03], [-64.18, -31.68], [-64.53, -31.53], [-64.68, -31.18], [-64.75, -31.15], [-65.0, -31.25], [-65.25, -31.15], [-65.32, -31.18], [-65.35, -31.25], [-65.25, -31.5], [-65.35, -31.75], [-65.25, -32.0], [-65.46, -32.5], [-65.25, -33.0], [-65.47, -33.53], [-66.0, -33.75], [-66.53, -33.53], [-66.68, -33.18], [-66.75, -33.15], [-67.0, -33.25], [-67.53, -33.03], [-67.75, -32.5], [-67.65, -32.25], [-67.75, -32.0], [-67.54, -31.5], [-67.68, -31.18], [-68.03, -31.03], [-68.25, -30.5]]]]}, "2016-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.25, -30.5], [-68.03, -29.97], [-67.68, -29.82], [-67.53, -29.47], [-67.0, -29.25], [-66.75, -29.35], [-66.68, -29.32], [-66.65, -29.25], [-66.75, -29.0], [-66.53, -28.47], [-66.12, -28.3], [-66.25, -28.0], [-66.15, -27.75], [-66.25, -27.5], [-66.15, -27.25], [-66.25, -27.0], [-66.03, -26.47], [-65.68, -26.32], [-65.53, -25.97], [-65.18, -25.82], [-65.15, -25.75], [-65.25, -25.5], [-65.15, -25.25], [-65.25, -25.0], [-65.04, -24.5], [-65.25, -24.0], [-65.15, -23.75], [-65.25, -23.5], [-65.15, -23.25], [-65.25, -23.0], [-65.03, -22.47], [-64.68, -22.32], [-64.53, -21.97], [-64.18, -21.82], [-64.03, -21.47], [-63.5, -21.25], [-62.97, -21.47], [-62.75, -22.0], [-62.85, -22.25], [-62.82, -22.32], [-62.75, -22.35], [-62.5, -22.25], [-61.97, -22.47], [-61.82, -22.82], [-61.75, -22.85], [-61.5, -22.75], [-60.97, -22.97], [-60.82, -23.32], [-60.47, -23.47], [-60.25, -24.0], [-60.35, -24.25], [-60.25, -24.5], [-60.35, -24.75], [-60.25, -25.0], [-60.35, -25.25], [-60.25, -25.5], [-60.35, -25.75], [-60.25, -26.0], [-60.35, -26.25], [-60.25, -26.5], [-60.35, -26.75], [-60.25, -27.0], [-60.35, -27.25], [-60.25, -27.5], [-60.35, -27.75], [-60.32, -27.82], [-59.97, -27.97], [-59.75, -28.5], [-59.85, -28.75], [-59.82, -28.82], [-59.47, -28.97], [-59.25, -29.5], [-59.35, -29.75], [-59.25, -30.0], [-59.47, -30.53], [-60.0, -30.75], [-60.25, -30.65], [-60.5, -30.75], [-61.03, -30.53], [-61.18, -30.18], [-61.25, -30.15], [-61.5, -30.25], [-61.75, -30.15], [-61.82, -30.18], [-61.85, -30.25], [-61.75, -30.5], [-61.85, -30.75], [-61.75, -31.0], [-61.85, -31.25], [-61.82, -31.32], [-61.47, -31.47], [-61.25, -32.0], [-61.35, -32.25], [-61.25, -32.5], [-61.47, -33.03], [-62.0, -33.25], [-62.25, -33.15], [-62.5, -33.25], [-63.03, -33.03], [-63.18, -32.68], [-63.53, -32.53], [-63.68, -32.18], [-64.03, -32.03], [-64.18, -31.68], [-64.53, -31.53], [-64.68, -31.18], [-64.75, -31.15], [-65.0, -31.25], [-65.25, -31.15], [-65.32, -31.18], [-65.35, -31.25], [-65.25, -31.5], [-65.35, -31.75], [-65.25, -32.0], [-65.47, -32.53], [-65.82, -32.68], [-65.97, -33.03], [-66.5, -33.25], [-66.75, -33.15], [-67.0, -33.25], [-67.53, -33.03], [-67.75, -32.5], [-67.65, -32.25], [-67.75, -32.0], [-67.54, -31.5], [-67.68, -31.18], [-68.03, -31.03], [-68.25, -30.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.79316728645665}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.052909188712958}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.98228616601017, 16.878818120137396, 16.589784668514596, 18.4411560209075]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.98228616601017, 10.746451991945833, 11.941027107892921, 14.548525208838726]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.0647596446657985, -6.640835864370115, -6.770640859087817, -4.75121881476241]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.0647596446657985, -9.79316728645665, -8.10901475985446, -5.925610125491289]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4325118206094007, -2.2830185694509866, -2.331462446410048, -1.6282339012232432]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4325118206094007, -3.06208832598903, -2.739171936388521, -2.217498098360621]}}