{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:17.017651", "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": "2013-Dec-17_to_2013-Dec-21_306.5_1.5"}, "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": 2013120000693}, "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": "December 17 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 21 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 52532.20107411349}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": 1.5}, "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": 306.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 305.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.53, 0.97], [-54.75, 1.5], [-54.53, 2.03], [-54.0, 2.25], [-53.75, 2.15], [-53.68, 2.18], [-53.53, 2.53], [-53.0, 2.75], [-52.7, 2.62], [-52.53, 3.03], [-52.0, 3.25], [-51.47, 3.03], [-51.25, 2.5], [-51.47, 1.97], [-52.0, 1.75], [-52.3, 1.88], [-52.35, 1.75], [-52.25, 1.5], [-52.47, 0.97], [-53.0, 0.75], [-53.25, 0.85], [-53.5, 0.75], [-53.75, 0.85], [-54.0, 0.75], [-54.53, 0.97]]]]}, "2013-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.65, 1.25], [-54.75, 1.5], [-54.53, 2.03], [-54.0, 2.25], [-53.75, 2.15], [-53.68, 2.18], [-53.53, 2.53], [-53.18, 2.68], [-53.03, 3.03], [-52.5, 3.25], [-52.25, 3.15], [-52.0, 3.25], [-51.47, 3.03], [-51.25, 2.5], [-51.47, 1.97], [-51.82, 1.82], [-51.85, 1.75], [-51.75, 1.5], [-51.85, 1.25], [-51.75, 1.0], [-51.97, 0.47], [-52.32, 0.32], [-52.35, 0.25], [-52.25, 0.0], [-52.47, -0.53], [-53.0, -0.75], [-53.25, -0.65], [-53.5, -0.75], [-54.03, -0.53], [-54.18, -0.18], [-54.53, -0.03], [-54.75, 0.5], [-54.65, 0.75], [-54.75, 1.0], [-54.65, 1.25]]]]}, "2013-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.65, 1.25], [-54.75, 1.5], [-54.53, 2.03], [-54.0, 2.25], [-53.75, 2.15], [-53.68, 2.18], [-53.53, 2.53], [-53.18, 2.68], [-53.03, 3.03], [-52.5, 3.25], [-52.25, 3.15], [-52.0, 3.25], [-51.47, 3.03], [-51.25, 2.5], [-51.47, 1.97], [-51.82, 1.82], [-51.85, 1.75], [-51.75, 1.5], [-51.85, 1.25], [-51.75, 1.0], [-51.97, 0.47], [-52.32, 0.32], [-52.35, 0.25], [-52.25, 0.0], [-52.47, -0.53], [-53.0, -0.75], [-53.25, -0.65], [-53.5, -0.75], [-54.03, -0.53], [-54.18, -0.18], [-54.53, -0.03], [-54.75, 0.5], [-54.65, 0.75], [-54.75, 1.0], [-54.65, 1.25]]]]}, "2013-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.65, 1.25], [-54.75, 1.5], [-54.53, 2.03], [-54.0, 2.25], [-53.75, 2.15], [-53.68, 2.18], [-53.53, 2.53], [-53.18, 2.68], [-53.03, 3.03], [-52.5, 3.25], [-51.97, 3.03], [-51.75, 2.5], [-51.85, 2.25], [-51.75, 2.0], [-51.85, 1.75], [-51.75, 1.5], [-51.85, 1.25], [-51.75, 1.0], [-51.97, 0.47], [-52.32, 0.32], [-52.35, 0.25], [-52.25, 0.0], [-52.47, -0.53], [-53.0, -0.75], [-53.25, -0.65], [-53.5, -0.75], [-54.03, -0.53], [-54.18, -0.18], [-54.53, -0.03], [-54.75, 0.5], [-54.65, 0.75], [-54.75, 1.0], [-54.65, 1.25]]]]}, "2013-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.65, 1.25], [-54.75, 1.5], [-54.53, 2.03], [-54.0, 2.25], [-53.75, 2.15], [-53.5, 2.25], [-53.25, 2.15], [-53.0, 2.25], [-52.47, 2.03], [-52.25, 1.5], [-52.47, 0.97], [-52.82, 0.82], [-52.85, 0.75], [-52.75, 0.5], [-52.97, -0.03], [-53.5, -0.25], [-53.75, -0.15], [-54.0, -0.25], [-54.53, -0.03], [-54.75, 0.5], [-54.65, 0.75], [-54.75, 1.0], [-54.65, 1.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.90807963576691}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2672665378488177}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.20000884381915, 23.86207048570793, 23.77610009150095, 23.821524126235033, 23.658257860313824]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.083083931738713, 23.189842820526735, 23.072025055531924, 22.932985858951042, 23.21805179665938]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.736430028844984, -2.3420767830006337, -2.3483971457674047, -2.3074548156822132, -2.1758630517756745]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8492744481580985, -2.7173105493997127, -2.90807963576691, -2.8344051079869246, -2.6124789261669434]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.315844118580635, -1.7654787560562162, -1.7900343795042521, -1.8394106718393881, -1.7740473926285898]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3561833461389294, -2.043439483167858, -2.1008396495720167, -2.3490682016408697, -2.1357771561711307]}}