{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:37.610159", "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": "2011-Oct-25_to_2011-Oct-27_298.0_-41.0"}, "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": 2011100001104}, "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": "October 25 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 27 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 133997.84349907993}, "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", "S.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": -41.0}, "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": 298.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 295.25}, "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": -44.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.03, -40.97], [-64.5, -40.75], [-64.25, -40.85], [-64.18, -40.82], [-64.03, -40.47], [-63.5, -40.25], [-63.25, -40.35], [-63.12, -40.3], [-63.25, -40.0], [-63.03, -39.47], [-62.68, -39.32], [-62.65, -39.25], [-62.75, -39.0], [-62.53, -38.47], [-62.0, -38.25], [-61.47, -38.47], [-61.32, -38.82], [-60.97, -38.97], [-60.82, -39.32], [-60.75, -39.35], [-60.5, -39.25], [-59.97, -39.47], [-59.82, -39.82], [-59.47, -39.97], [-59.25, -40.5], [-59.35, -40.75], [-59.25, -41.0], [-59.35, -41.25], [-59.25, -41.5], [-59.35, -41.75], [-59.25, -42.0], [-59.47, -42.53], [-59.82, -42.68], [-59.97, -43.03], [-60.5, -43.25], [-60.75, -43.15], [-60.82, -43.18], [-60.85, -43.25], [-60.75, -43.5], [-60.97, -44.03], [-61.32, -44.18], [-61.47, -44.53], [-62.0, -44.75], [-62.53, -44.53], [-62.68, -44.18], [-62.75, -44.15], [-63.0, -44.25], [-63.53, -44.03], [-63.68, -43.68], [-64.03, -43.53], [-64.25, -43.0], [-64.15, -42.75], [-64.18, -42.68], [-64.25, -42.65], [-64.5, -42.75], [-65.03, -42.53], [-65.25, -42.0], [-65.15, -41.75], [-65.25, -41.5], [-65.03, -40.97]]]]}, "2011-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.03, -40.97], [-64.5, -40.75], [-64.25, -40.85], [-64.18, -40.82], [-64.03, -40.47], [-63.5, -40.25], [-63.25, -40.35], [-63.12, -40.3], [-63.25, -40.0], [-63.03, -39.47], [-62.68, -39.32], [-62.65, -39.25], [-62.75, -39.0], [-62.53, -38.47], [-62.0, -38.25], [-61.47, -38.47], [-61.32, -38.82], [-60.97, -38.97], [-60.82, -39.32], [-60.75, -39.35], [-60.5, -39.25], [-59.97, -39.47], [-59.82, -39.82], [-59.47, -39.97], [-59.25, -40.5], [-59.35, -40.75], [-59.25, -41.0], [-59.35, -41.25], [-59.25, -41.5], [-59.35, -41.75], [-59.25, -42.0], [-59.47, -42.53], [-59.82, -42.68], [-59.97, -43.03], [-60.5, -43.25], [-60.75, -43.15], [-60.82, -43.18], [-60.85, -43.25], [-60.75, -43.5], [-60.97, -44.03], [-61.32, -44.18], [-61.47, -44.53], [-62.0, -44.75], [-62.53, -44.53], [-62.68, -44.18], [-62.75, -44.15], [-63.0, -44.25], [-63.53, -44.03], [-63.68, -43.68], [-64.03, -43.53], [-64.25, -43.0], [-64.15, -42.75], [-64.18, -42.68], [-64.25, -42.65], [-64.5, -42.75], [-65.03, -42.53], [-65.25, -42.0], [-65.15, -41.75], [-65.25, -41.5], [-65.03, -40.97]]]]}, "2011-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.03, -40.97], [-64.5, -40.75], [-64.25, -40.85], [-64.18, -40.82], [-64.03, -40.47], [-63.5, -40.25], [-63.25, -40.35], [-63.12, -40.3], [-63.25, -40.0], [-63.03, -39.47], [-62.68, -39.32], [-62.65, -39.25], [-62.75, -39.0], [-62.53, -38.47], [-62.0, -38.25], [-61.47, -38.47], [-61.32, -38.82], [-60.97, -38.97], [-60.82, -39.32], [-60.75, -39.35], [-60.5, -39.25], [-59.97, -39.47], [-59.82, -39.82], [-59.47, -39.97], [-59.25, -40.5], [-59.35, -40.75], [-59.25, -41.0], [-59.35, -41.25], [-59.25, -41.5], [-59.35, -41.75], [-59.25, -42.0], [-59.47, -42.53], [-59.82, -42.68], [-59.97, -43.03], [-60.5, -43.25], [-60.75, -43.15], [-60.82, -43.18], [-60.85, -43.25], [-60.75, -43.5], [-60.97, -44.03], [-61.32, -44.18], [-61.47, -44.53], [-62.0, -44.75], [-62.53, -44.53], [-62.68, -44.18], [-62.75, -44.15], [-63.0, -44.25], [-63.53, -44.03], [-63.68, -43.68], [-64.03, -43.53], [-64.25, -43.0], [-64.15, -42.75], [-64.18, -42.68], [-64.25, -42.65], [-64.5, -42.75], [-65.03, -42.53], [-65.25, -42.0], [-65.15, -41.75], [-65.25, -41.5], [-65.03, -40.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.5854305827461985}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.394382891141189}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.300292911144652, 8.470076423626836, 9.488077483858092]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.48344860033734, 6.943765926471258, 8.407376568609436]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.1549104241774386, -3.9977025552293024, -3.030535694016822]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.155680920208113, -6.5854305827461985, -4.949510290929538]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7361037334766418, -2.1949246248270886, -1.7250240871271059]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9516377212997997, -2.527426813370531, -2.2265931823537817]}}