{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:31.327545", "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": "2019-Apr-23_to_2019-Apr-25_296.5_-24.5"}, "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": 2019040000628}, "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": "April 23 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 25 2019"}, "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": 76198.40022134504}, "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": -24.5}, "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": 296.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 295.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 298.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.75}, "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": {"2019-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.75, -24.5], [-64.53, -23.97], [-64.18, -23.82], [-64.15, -23.75], [-64.25, -23.5], [-64.15, -23.25], [-64.25, -23.0], [-64.15, -22.75], [-64.25, -22.5], [-64.03, -21.97], [-63.68, -21.82], [-63.53, -21.47], [-63.0, -21.25], [-62.47, -21.47], [-62.32, -21.82], [-61.97, -21.97], [-61.75, -22.5], [-61.85, -22.75], [-61.75, -23.0], [-61.85, -23.25], [-61.82, -23.32], [-61.47, -23.47], [-61.25, -24.0], [-61.35, -24.25], [-61.25, -24.5], [-61.35, -24.75], [-61.25, -25.0], [-61.35, -25.25], [-61.25, -25.5], [-61.47, -26.03], [-62.0, -26.25], [-62.25, -26.15], [-62.5, -26.25], [-62.75, -26.15], [-63.0, -26.25], [-63.25, -26.15], [-63.5, -26.25], [-64.03, -26.03], [-64.25, -25.5], [-64.15, -25.25], [-64.18, -25.18], [-64.53, -25.03], [-64.75, -24.5]]]]}, "2019-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.75, -24.5], [-64.53, -23.97], [-64.18, -23.82], [-64.15, -23.75], [-64.25, -23.5], [-64.15, -23.25], [-64.25, -23.0], [-64.15, -22.75], [-64.25, -22.5], [-64.03, -21.97], [-63.68, -21.82], [-63.53, -21.47], [-63.0, -21.25], [-62.47, -21.47], [-62.32, -21.82], [-61.97, -21.97], [-61.75, -22.5], [-61.85, -22.75], [-61.75, -23.0], [-61.85, -23.25], [-61.82, -23.32], [-61.47, -23.47], [-61.25, -24.0], [-61.35, -24.25], [-61.25, -24.5], [-61.35, -24.75], [-61.25, -25.0], [-61.35, -25.25], [-61.25, -25.5], [-61.47, -26.03], [-62.0, -26.25], [-62.25, -26.15], [-62.5, -26.25], [-62.75, -26.15], [-63.0, -26.25], [-63.25, -26.15], [-63.5, -26.25], [-64.03, -26.03], [-64.25, -25.5], [-64.15, -25.25], [-64.18, -25.18], [-64.53, -25.03], [-64.75, -24.5]]]]}, "2019-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.75, -24.5], [-64.53, -23.97], [-64.18, -23.82], [-64.15, -23.75], [-64.25, -23.5], [-64.15, -23.25], [-64.25, -23.0], [-64.15, -22.75], [-64.25, -22.5], [-64.03, -21.97], [-63.68, -21.82], [-63.53, -21.47], [-63.0, -21.25], [-62.47, -21.47], [-62.32, -21.82], [-61.97, -21.97], [-61.75, -22.5], [-61.85, -22.75], [-61.75, -23.0], [-61.85, -23.25], [-61.82, -23.32], [-61.47, -23.47], [-61.25, -24.0], [-61.35, -24.25], [-61.25, -24.5], [-61.35, -24.75], [-61.25, -25.0], [-61.35, -25.25], [-61.25, -25.5], [-61.47, -26.03], [-62.0, -26.25], [-62.25, -26.15], [-62.5, -26.25], [-62.75, -26.15], [-63.0, -26.25], [-63.25, -26.15], [-63.5, -26.25], [-64.03, -26.03], [-64.25, -25.5], [-64.15, -25.25], [-64.18, -25.18], [-64.53, -25.03], [-64.75, -24.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.451491673846931}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.076389551159064}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.435764508892987, 16.082567389643316, 16.8131959471321]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.069437117011546, 14.303141601740151, 16.29721056858756]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.050347667668884, -6.427127203265389, -5.751693782542919]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.451491673846931, -7.398162514411183, -6.200292915145553]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6959783098537795, -1.7540929859099976, -1.4923657341938321]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0724735577477396, -2.003830436026406, -1.6363214238798902]}}