{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:33.434168", "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-Jan-22_to_2011-Jan-27_321.5_-13.5"}, "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": 2011010001112}, "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": "January 22 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 27 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 77771.75666166276}, "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.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": ["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": -13.5}, "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": 321.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "321.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 320.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 324.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.5, -12.75], [-37.97, -12.97], [-37.75, -13.5], [-37.97, -14.03], [-38.5, -14.25], [-39.03, -14.03], [-39.25, -13.5], [-39.03, -12.97], [-38.5, -12.75]]]]}, "2011-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.03, -12.47], [-38.5, -12.25], [-38.25, -12.35], [-38.0, -12.25], [-37.47, -12.47], [-37.25, -13.0], [-37.47, -13.53], [-37.82, -13.68], [-37.97, -14.03], [-38.5, -14.25], [-39.03, -14.03], [-39.25, -13.5], [-39.15, -13.25], [-39.25, -13.0], [-39.03, -12.47]]]]}, "2011-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.65, -15.25], [-39.75, -15.0], [-39.65, -14.75], [-39.75, -14.5], [-39.65, -14.25], [-39.75, -14.0], [-39.53, -13.47], [-39.18, -13.32], [-39.15, -13.25], [-39.25, -13.0], [-39.03, -12.47], [-38.5, -12.25], [-38.25, -12.35], [-38.0, -12.25], [-37.47, -12.47], [-37.32, -12.82], [-36.97, -12.97], [-36.82, -13.32], [-36.47, -13.47], [-36.32, -13.82], [-35.97, -13.97], [-35.82, -14.32], [-35.47, -14.47], [-35.25, -15.0], [-35.35, -15.25], [-35.25, -15.5], [-35.47, -16.03], [-36.0, -16.25], [-36.53, -16.03], [-36.68, -15.68], [-37.03, -15.53], [-37.18, -15.18], [-37.25, -15.15], [-37.37, -15.2], [-37.25, -15.5], [-37.35, -15.75], [-37.25, -16.0], [-37.47, -16.53], [-38.0, -16.75], [-38.25, -16.65], [-38.5, -16.75], [-38.75, -16.65], [-39.0, -16.75], [-39.53, -16.53], [-39.75, -16.0], [-39.65, -15.75], [-39.75, -15.5], [-39.65, -15.25]]]]}, "2011-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.65, -15.25], [-39.75, -15.0], [-39.65, -14.75], [-39.75, -14.5], [-39.65, -14.25], [-39.75, -14.0], [-39.53, -13.47], [-39.18, -13.32], [-39.15, -13.25], [-39.25, -13.0], [-39.03, -12.47], [-38.5, -12.25], [-38.25, -12.35], [-38.0, -12.25], [-37.47, -12.47], [-37.32, -12.82], [-36.97, -12.97], [-36.82, -13.32], [-36.47, -13.47], [-36.32, -13.82], [-35.97, -13.97], [-35.82, -14.32], [-35.47, -14.47], [-35.25, -15.0], [-35.35, -15.25], [-35.25, -15.5], [-35.47, -16.03], [-36.0, -16.25], [-36.53, -16.03], [-36.68, -15.68], [-37.03, -15.53], [-37.18, -15.18], [-37.25, -15.15], [-37.37, -15.2], [-37.25, -15.5], [-37.35, -15.75], [-37.25, -16.0], [-37.47, -16.53], [-38.0, -16.75], [-38.25, -16.65], [-38.5, -16.75], [-38.75, -16.65], [-39.0, -16.75], [-39.53, -16.53], [-39.75, -16.0], [-39.65, -15.75], [-39.75, -15.5], [-39.65, -15.25]]]]}, "2011-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-39.65, -15.25], [-39.75, -15.0], [-39.65, -14.75], [-39.75, -14.5], [-39.65, -14.25], [-39.75, -14.0], [-39.53, -13.47], [-39.18, -13.32], [-39.15, -13.25], [-39.25, -13.0], [-39.03, -12.47], [-38.5, -12.25], [-38.25, -12.35], [-38.0, -12.25], [-37.47, -12.47], [-37.32, -12.82], [-36.97, -12.97], [-36.82, -13.32], [-36.47, -13.47], [-36.32, -13.82], [-35.97, -13.97], [-35.82, -14.32], [-35.47, -14.47], [-35.25, -15.0], [-35.35, -15.25], [-35.25, -15.5], [-35.47, -16.03], [-36.0, -16.25], [-36.53, -16.03], [-36.68, -15.68], [-37.03, -15.53], [-37.18, -15.18], [-37.25, -15.15], [-37.37, -15.2], [-37.25, -15.5], [-37.35, -15.75], [-37.25, -16.0], [-37.47, -16.53], [-38.0, -16.75], [-38.25, -16.65], [-38.5, -16.75], [-38.75, -16.65], [-39.0, -16.75], [-39.53, -16.53], [-39.75, -16.0], [-39.65, -15.75], [-39.75, -15.5], [-39.65, -15.25]]]]}, "2011-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-38.5, -14.75], [-37.97, -14.97], [-37.75, -15.5], [-37.85, -15.75], [-37.75, -16.0], [-37.97, -16.53], [-38.5, -16.75], [-39.03, -16.53], [-39.25, -16.0], [-39.15, -15.75], [-39.25, -15.5], [-39.03, -14.97], [-38.5, -14.75]]], [[[-39.15, -13.75], [-39.25, -13.5], [-39.03, -12.97], [-38.5, -12.75], [-37.97, -12.97], [-37.75, -13.5], [-37.85, -13.75], [-37.75, -14.0], [-37.97, -14.53], [-38.5, -14.75], [-39.03, -14.53], [-39.25, -14.0], [-39.15, -13.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.5625137295897957}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1158267943107443}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.46891285783363, 25.454999677944045, 25.3414875129767, 25.391415992650593, 25.24616166251417, 25.392826571556327]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.46891285783363, 25.261914652147368, 24.621273899967548, 24.84594682929196, 25.001620356721162, 25.253757087391193]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8522921888069277, -1.017337538657955, -1.0961494204161681, -1.0666533722237677, -1.2224862111951411, -1.0098213515578038]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8522921888069277, -1.2512497400446705, -1.5625137295897957, -1.383909843285835, -1.4664714380977557, -1.0587808386845836]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4240381190450768, -1.662316699656932, -1.846914534777266, -1.7715708279777027, -2.023582682475957, -1.6055336212111029]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4240381190450768, -1.9731453258784135, -2.3138070549169014, -2.232568446384543, -2.3667695834156537, -1.6975269113648914]}}