{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:51.019339", "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": "2021-Jan-03_to_2021-Jan-06_291.0_-35.5"}, "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": 2021010000231}, "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 03 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 06 2021"}, "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": 193616.260710724}, "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": ["South Atlantic Ocean"]}, "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": -35.5}, "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": 291.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -39.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.25, -34.5], [-69.03, -33.97], [-68.5, -33.75], [-67.97, -33.97], [-67.82, -34.32], [-67.47, -34.47], [-67.32, -34.82], [-67.25, -34.85], [-67.0, -34.75], [-66.47, -34.97], [-66.25, -35.5], [-66.47, -36.03], [-66.82, -36.18], [-66.85, -36.25], [-66.75, -36.5], [-66.85, -36.75], [-66.75, -37.0], [-66.97, -37.53], [-67.5, -37.75], [-68.03, -37.53], [-68.18, -37.18], [-68.53, -37.03], [-68.75, -36.5], [-68.65, -36.25], [-68.7, -36.12], [-69.0, -36.25], [-69.53, -36.03], [-69.75, -35.5], [-69.53, -34.97], [-69.18, -34.82], [-69.15, -34.75], [-69.25, -34.5]]]]}, "2021-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.25, -37.0], [-70.03, -36.47], [-69.68, -36.32], [-69.65, -36.25], [-69.75, -36.0], [-69.65, -35.75], [-69.75, -35.5], [-69.65, -35.25], [-69.75, -35.0], [-69.65, -34.75], [-69.75, -34.5], [-69.53, -33.97], [-69.0, -33.75], [-68.75, -33.85], [-68.5, -33.75], [-67.97, -33.97], [-67.82, -34.32], [-67.47, -34.47], [-67.32, -34.82], [-67.25, -34.85], [-67.0, -34.75], [-66.47, -34.97], [-66.25, -35.5], [-66.35, -35.75], [-66.25, -36.0], [-66.35, -36.25], [-66.32, -36.32], [-66.25, -36.35], [-66.18, -36.32], [-66.03, -35.97], [-65.5, -35.75], [-64.97, -35.97], [-64.75, -36.5], [-64.85, -36.75], [-64.82, -36.82], [-64.75, -36.85], [-64.5, -36.75], [-64.25, -36.85], [-64.0, -36.75], [-63.47, -36.97], [-63.32, -37.32], [-63.25, -37.35], [-63.0, -37.25], [-62.75, -37.35], [-62.5, -37.25], [-61.97, -37.47], [-61.82, -37.82], [-61.75, -37.85], [-61.5, -37.75], [-61.25, -37.85], [-61.0, -37.75], [-60.47, -37.97], [-60.25, -38.5], [-60.35, -38.75], [-60.25, -39.0], [-60.47, -39.53], [-61.0, -39.75], [-61.25, -39.65], [-61.5, -39.75], [-61.75, -39.65], [-61.82, -39.68], [-61.97, -40.03], [-62.5, -40.25], [-62.75, -40.15], [-63.0, -40.25], [-63.25, -40.15], [-63.5, -40.25], [-63.75, -40.15], [-64.0, -40.25], [-64.25, -40.15], [-64.5, -40.25], [-64.75, -40.15], [-65.0, -40.25], [-65.53, -40.03], [-65.68, -39.68], [-66.03, -39.53], [-66.18, -39.18], [-66.53, -39.03], [-66.68, -38.68], [-66.75, -38.65], [-67.0, -38.75], [-67.25, -38.65], [-67.5, -38.75], [-68.03, -38.53], [-68.18, -38.18], [-68.25, -38.15], [-68.5, -38.25], [-68.75, -38.15], [-69.0, -38.25], [-69.53, -38.03], [-69.68, -37.68], [-70.03, -37.53], [-70.25, -37.0]]]]}, "2021-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.25, -37.0], [-70.03, -36.47], [-69.68, -36.32], [-69.65, -36.25], [-69.75, -36.0], [-69.65, -35.75], [-69.75, -35.5], [-69.65, -35.25], [-69.75, -35.0], [-69.65, -34.75], [-69.75, -34.5], [-69.53, -33.97], [-69.0, -33.75], [-68.75, -33.85], [-68.5, -33.75], [-67.97, -33.97], [-67.82, -34.32], [-67.47, -34.47], [-67.32, -34.82], [-67.25, -34.85], [-67.0, -34.75], [-66.47, -34.97], [-66.25, -35.5], [-66.35, -35.75], [-66.25, -36.0], [-66.35, -36.25], [-66.32, -36.32], [-66.25, -36.35], [-66.18, -36.32], [-66.03, -35.97], [-65.5, -35.75], [-64.97, -35.97], [-64.75, -36.5], [-64.85, -36.75], [-64.82, -36.82], [-64.75, -36.85], [-64.5, -36.75], [-64.25, -36.85], [-64.0, -36.75], [-63.47, -36.97], [-63.32, -37.32], [-63.25, -37.35], [-63.0, -37.25], [-62.75, -37.35], [-62.5, -37.25], [-61.97, -37.47], [-61.82, -37.82], [-61.75, -37.85], [-61.5, -37.75], [-61.25, -37.85], [-61.0, -37.75], [-60.47, -37.97], [-60.25, -38.5], [-60.35, -38.75], [-60.25, -39.0], [-60.47, -39.53], [-61.0, -39.75], [-61.25, -39.65], [-61.5, -39.75], [-61.75, -39.65], [-61.82, -39.68], [-61.97, -40.03], [-62.5, -40.25], [-62.75, -40.15], [-63.0, -40.25], [-63.25, -40.15], [-63.5, -40.25], [-63.75, -40.15], [-64.0, -40.25], [-64.25, -40.15], [-64.5, -40.25], [-64.75, -40.15], [-65.0, -40.25], [-65.53, -40.03], [-65.68, -39.68], [-66.03, -39.53], [-66.18, -39.18], [-66.53, -39.03], [-66.68, -38.68], [-66.75, -38.65], [-67.0, -38.75], [-67.25, -38.65], [-67.5, -38.75], [-68.03, -38.53], [-68.18, -38.18], [-68.25, -38.15], [-68.5, -38.25], [-68.75, -38.15], [-69.0, -38.25], [-69.53, -38.03], [-69.68, -37.68], [-70.03, -37.53], [-70.25, -37.0]]]]}, "2021-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.25, -37.0], [-70.03, -36.47], [-69.68, -36.32], [-69.65, -36.25], [-69.75, -36.0], [-69.65, -35.75], [-69.75, -35.5], [-69.65, -35.25], [-69.75, -35.0], [-69.65, -34.75], [-69.75, -34.5], [-69.53, -33.97], [-69.0, -33.75], [-68.75, -33.85], [-68.5, -33.75], [-67.97, -33.97], [-67.82, -34.32], [-67.47, -34.47], [-67.32, -34.82], [-67.25, -34.85], [-67.0, -34.75], [-66.47, -34.97], [-66.25, -35.5], [-66.35, -35.75], [-66.25, -36.0], [-66.35, -36.25], [-66.32, -36.32], [-66.25, -36.35], [-66.18, -36.32], [-66.03, -35.97], [-65.5, -35.75], [-64.97, -35.97], [-64.75, -36.5], [-64.85, -36.75], [-64.82, -36.82], [-64.75, -36.85], [-64.5, -36.75], [-64.25, -36.85], [-64.0, -36.75], [-63.47, -36.97], [-63.32, -37.32], [-63.25, -37.35], [-63.0, -37.25], [-62.75, -37.35], [-62.5, -37.25], [-61.97, -37.47], [-61.82, -37.82], [-61.75, -37.85], [-61.5, -37.75], [-61.25, -37.85], [-61.0, -37.75], [-60.47, -37.97], [-60.25, -38.5], [-60.35, -38.75], [-60.25, -39.0], [-60.47, -39.53], [-61.0, -39.75], [-61.25, -39.65], [-61.5, -39.75], [-61.75, -39.65], [-61.82, -39.68], [-61.97, -40.03], [-62.5, -40.25], [-62.75, -40.15], [-63.0, -40.25], [-63.25, -40.15], [-63.5, -40.25], [-63.75, -40.15], [-64.0, -40.25], [-64.25, -40.15], [-64.5, -40.25], [-64.75, -40.15], [-65.0, -40.25], [-65.53, -40.03], [-65.68, -39.68], [-66.03, -39.53], [-66.18, -39.18], [-66.53, -39.03], [-66.68, -38.68], [-66.75, -38.65], [-67.0, -38.75], [-67.25, -38.65], [-67.5, -38.75], [-68.03, -38.53], [-68.18, -38.18], [-68.25, -38.15], [-68.5, -38.25], [-68.75, -38.15], [-69.0, -38.25], [-69.53, -38.03], [-69.68, -37.68], [-70.03, -37.53], [-70.25, -37.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.599341848735548}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.258186249107079}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.617074069139846, 18.46942294863061, 17.299926015760605, 18.28036969979121]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.48240043166652, 12.810181073350918, 10.300005032414617, 12.147336529259064]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.092891089030084, -4.834283094393552, -6.0202496185857, -5.0822823224539775]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.781547260113371, -6.152539348275127, -7.599341848735548, -6.7293334362489645]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.34208615837816, -1.557127676199003, -1.9638212308115948, -1.658067154692092]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5165135068330302, -1.9264555227830893, -2.724137384845862, -2.134043492609422]}}