{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:49.708174", "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": "2015-Sep-20_to_2015-Sep-22_292.5_-39.5"}, "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": 2015090000701}, "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 20 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 2015"}, "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": 73796.81636751676}, "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": []}, "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": -39.5}, "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": 292.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "292.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 294.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -41.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -38.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.53, -38.47], [-69.18, -38.32], [-69.03, -37.97], [-68.5, -37.75], [-68.25, -37.85], [-68.0, -37.75], [-67.75, -37.85], [-67.5, -37.75], [-67.25, -37.85], [-67.0, -37.75], [-66.47, -37.97], [-66.32, -38.32], [-65.97, -38.47], [-65.82, -38.82], [-65.47, -38.97], [-65.32, -39.32], [-64.97, -39.47], [-64.75, -40.0], [-64.85, -40.25], [-64.75, -40.5], [-64.85, -40.75], [-64.75, -41.0], [-64.97, -41.53], [-65.5, -41.75], [-66.03, -41.53], [-66.18, -41.18], [-66.25, -41.15], [-66.5, -41.25], [-66.75, -41.15], [-67.0, -41.25], [-67.25, -41.15], [-67.5, -41.25], [-67.75, -41.15], [-68.0, -41.25], [-68.53, -41.03], [-68.68, -40.68], [-69.03, -40.53], [-69.18, -40.18], [-69.53, -40.03], [-69.75, -39.5], [-69.65, -39.25], [-69.75, -39.0], [-69.53, -38.47]]]]}, "2015-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.53, -38.47], [-69.18, -38.32], [-69.03, -37.97], [-68.5, -37.75], [-68.25, -37.85], [-68.0, -37.75], [-67.75, -37.85], [-67.5, -37.75], [-67.25, -37.85], [-67.0, -37.75], [-66.47, -37.97], [-66.32, -38.32], [-65.97, -38.47], [-65.82, -38.82], [-65.47, -38.97], [-65.32, -39.32], [-64.97, -39.47], [-64.75, -40.0], [-64.85, -40.25], [-64.75, -40.5], [-64.85, -40.75], [-64.75, -41.0], [-64.97, -41.53], [-65.5, -41.75], [-66.03, -41.53], [-66.18, -41.18], [-66.25, -41.15], [-66.5, -41.25], [-66.75, -41.15], [-67.0, -41.25], [-67.25, -41.15], [-67.5, -41.25], [-67.75, -41.15], [-68.0, -41.25], [-68.53, -41.03], [-68.68, -40.68], [-69.03, -40.53], [-69.18, -40.18], [-69.53, -40.03], [-69.75, -39.5], [-69.65, -39.25], [-69.75, -39.0], [-69.53, -38.47]]]]}, "2015-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.53, -38.47], [-69.18, -38.32], [-69.03, -37.97], [-68.5, -37.75], [-68.25, -37.85], [-68.0, -37.75], [-67.75, -37.85], [-67.5, -37.75], [-67.25, -37.85], [-67.0, -37.75], [-66.47, -37.97], [-66.32, -38.32], [-65.97, -38.47], [-65.82, -38.82], [-65.47, -38.97], [-65.32, -39.32], [-64.97, -39.47], [-64.75, -40.0], [-64.85, -40.25], [-64.75, -40.5], [-64.85, -40.75], [-64.75, -41.0], [-64.97, -41.53], [-65.5, -41.75], [-66.03, -41.53], [-66.18, -41.18], [-66.25, -41.15], [-66.5, -41.25], [-66.75, -41.15], [-67.0, -41.25], [-67.25, -41.15], [-67.5, -41.25], [-67.75, -41.15], [-68.0, -41.25], [-68.53, -41.03], [-68.68, -40.68], [-69.03, -40.53], [-69.18, -40.18], [-69.53, -40.03], [-69.75, -39.5], [-69.65, -39.25], [-69.75, -39.0], [-69.53, -38.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.837297818507352}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.717130711651563}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.284243157816093, 6.674531439226712, 7.772430548578313]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.174146578315856, 2.733172066665361, 4.0646242930366725]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.593548757802234, -5.315701818471687, -4.242141558680768]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.6731870878038535, -5.837297818507352, -4.94308580949297]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.620975012323129, -1.9256042978415182, -1.600023903814926]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0093931053700884, -2.0937860653797444, -1.8705367221104552]}}