{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:18.739204", "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": "2014-Sep-24_to_2014-Sep-26_289.0_-40.5"}, "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": 2014090000885}, "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": "September 24 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 26 2014"}, "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": 53987.068151126645}, "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", "Chile"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.South-America", "S.W.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": -40.5}, "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": 289.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "289.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 291.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -41.75}, "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": {"2014-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.75, -39.5], [-72.53, -38.97], [-72.18, -38.82], [-72.03, -38.47], [-71.5, -38.25], [-70.97, -38.47], [-70.82, -38.82], [-70.47, -38.97], [-70.25, -39.5], [-70.35, -39.75], [-70.32, -39.82], [-70.25, -39.85], [-70.0, -39.75], [-69.75, -39.85], [-69.5, -39.75], [-69.25, -39.85], [-69.0, -39.75], [-68.47, -39.97], [-68.32, -40.32], [-67.97, -40.47], [-67.75, -41.0], [-67.85, -41.25], [-67.75, -41.5], [-67.97, -42.03], [-68.5, -42.25], [-68.75, -42.15], [-69.0, -42.25], [-69.25, -42.15], [-69.5, -42.25], [-69.75, -42.15], [-70.0, -42.25], [-70.53, -42.03], [-70.68, -41.68], [-70.75, -41.65], [-71.0, -41.75], [-71.53, -41.53], [-71.7, -41.12], [-72.0, -41.25], [-72.25, -41.15], [-72.5, -41.25], [-73.03, -41.03], [-73.25, -40.5], [-73.03, -39.97], [-72.68, -39.82], [-72.65, -39.75], [-72.75, -39.5]]]]}, "2014-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.75, -39.5], [-72.53, -38.97], [-72.18, -38.82], [-72.03, -38.47], [-71.5, -38.25], [-70.97, -38.47], [-70.82, -38.82], [-70.47, -38.97], [-70.25, -39.5], [-70.35, -39.75], [-70.32, -39.82], [-70.25, -39.85], [-70.0, -39.75], [-69.75, -39.85], [-69.5, -39.75], [-69.25, -39.85], [-69.0, -39.75], [-68.47, -39.97], [-68.32, -40.32], [-67.97, -40.47], [-67.75, -41.0], [-67.85, -41.25], [-67.75, -41.5], [-67.97, -42.03], [-68.5, -42.25], [-68.75, -42.15], [-69.0, -42.25], [-69.25, -42.15], [-69.5, -42.25], [-69.75, -42.15], [-70.0, -42.25], [-70.53, -42.03], [-70.68, -41.68], [-70.75, -41.65], [-71.0, -41.75], [-71.53, -41.53], [-71.7, -41.12], [-72.0, -41.25], [-72.25, -41.15], [-72.5, -41.25], [-73.03, -41.03], [-73.25, -40.5], [-73.03, -39.97], [-72.68, -39.82], [-72.65, -39.75], [-72.75, -39.5]]]]}, "2014-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.75, -39.5], [-72.53, -38.97], [-72.18, -38.82], [-72.03, -38.47], [-71.5, -38.25], [-70.97, -38.47], [-70.82, -38.82], [-70.47, -38.97], [-70.25, -39.5], [-70.35, -39.75], [-70.32, -39.82], [-70.25, -39.85], [-70.0, -39.75], [-69.75, -39.85], [-69.5, -39.75], [-69.25, -39.85], [-69.0, -39.75], [-68.47, -39.97], [-68.32, -40.32], [-67.97, -40.47], [-67.75, -41.0], [-67.85, -41.25], [-67.75, -41.5], [-67.97, -42.03], [-68.5, -42.25], [-68.75, -42.15], [-69.0, -42.25], [-69.25, -42.15], [-69.5, -42.25], [-69.75, -42.15], [-70.0, -42.25], [-70.53, -42.03], [-70.68, -41.68], [-70.75, -41.65], [-71.0, -41.75], [-71.53, -41.53], [-71.7, -41.12], [-72.0, -41.25], [-72.25, -41.15], [-72.5, -41.25], [-73.03, -41.03], [-73.25, -40.5], [-73.03, -39.97], [-72.68, -39.82], [-72.65, -39.75], [-72.75, -39.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.416655805346579}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.9981103065927788}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.2996216782088936, 1.6312676109164386, 2.469978107902193]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.16615224269571627, -0.531520800952137, -0.16737911461723343]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.6353379741629634, -4.4992491719165715, -3.859743773698802]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.2309719976428255, -5.178098100031093, -5.416655805346579]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5840569481939168, -2.040397304552719, -1.7326268927789357]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1009928924990118, -2.504540681341359, -2.6233438927671444]}}