{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:54.722891", "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-Aug-11_to_2021-Aug-14_297.5_-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": 2021080000512}, "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": "August 11 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 14 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": 90536.57805968811}, "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", "Paraguay"]}, "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": 297.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "297.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -28.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.25, -26.5], [-63.03, -25.97], [-62.5, -25.75], [-62.25, 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[-60.75, -25.85], [-60.5, -25.75], [-60.25, -25.85], [-60.0, -25.75], [-59.47, -25.97], [-59.32, -26.32], [-59.25, -26.35], [-59.0, -26.25], [-58.75, -26.35], [-58.5, -26.25], [-57.97, -26.47], [-57.75, -27.0], [-57.85, -27.25], [-57.75, -27.5], [-57.85, -27.75], [-57.75, -28.0], [-57.97, -28.53], [-58.5, -28.75], [-58.75, -28.65], [-58.82, -28.68], [-58.97, -29.03], [-59.5, -29.25], [-60.0, -29.04], [-60.5, -29.25], [-60.75, -29.15], [-61.0, -29.25], [-61.25, -29.15], [-61.5, -29.25], [-62.03, -29.03], [-62.25, -28.5], [-62.15, -28.25], [-62.18, -28.18], [-62.53, -28.03], [-62.75, -27.5], [-62.65, -27.25], [-62.68, -27.18], [-63.03, -27.03], [-63.25, -26.5]]]]}, "2021-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.25, -26.5], [-63.03, -25.97], [-62.5, -25.75], [-62.25, -25.85], [-62.0, -25.75], [-61.75, -25.85], [-61.5, -25.75], [-61.25, -25.85], [-61.0, -25.75], [-60.75, -25.85], [-60.5, -25.75], [-60.25, -25.85], [-60.0, -25.75], [-59.47, -25.97], 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anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.652141311101891}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.846930078142236, 10.387971740179921, 9.993239061945758, 12.10746351472028]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.629037243501386, 9.036400320158407, 9.236081828276212, 12.10746351472028]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.8167101134720305, -6.363444740047972, -6.80181512687467, -5.809121757165258]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.21443296334553, -7.055868751468722, -7.465580366934375, -5.809121757165258]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3729394352749469, -1.3169099357639769, -1.4251799108172885, -1.2219654716863746]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.479010473024305, -1.4895778823148946, -1.5912260776144491, -1.2219654716863746]}}