{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:44.107123", "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-Jun-27_to_2011-Jun-30_307.5_-4.0"}, "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": 2011060001385}, "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": "June 27 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 30 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 55437.32768922378}, "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": -4.0}, "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": 307.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "307.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.75}, "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": -6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, -6.53], [-56.75, -6.0], [-56.53, -5.47], [-56.0, -5.25], [-55.75, -5.35], [-55.68, -5.32], [-55.65, -5.25], [-55.75, -5.0], [-55.53, -4.47], [-55.0, -4.25], [-54.75, -4.35], [-54.5, -4.25], [-53.97, -4.47], [-53.75, -5.0], [-53.85, -5.25], [-53.75, -5.5], [-53.97, -6.03], [-54.32, -6.18], [-54.47, -6.53], [-55.0, -6.75], [-55.25, -6.65], [-55.5, -6.75], [-55.75, -6.65], [-56.0, -6.75], [-56.53, -6.53]]]]}, "2011-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, -6.53], [-56.75, -6.0], [-56.53, -5.47], [-56.0, -5.25], [-55.75, -5.35], [-55.68, -5.32], [-55.65, -5.25], [-55.75, -5.0], [-55.53, -4.47], [-55.0, -4.25], [-54.75, -4.35], [-54.68, -4.32], [-54.65, -4.25], [-54.75, -4.0], [-54.53, -3.47], [-54.0, -3.25], [-53.75, -3.35], [-53.5, -3.25], [-53.25, -3.35], [-53.0, -3.25], [-52.75, -3.35], [-52.5, -3.25], [-52.25, -3.35], [-52.0, -3.25], [-51.47, -3.47], [-51.25, -4.0], [-51.47, -4.53], [-51.82, -4.68], [-51.97, -5.03], [-52.32, -5.18], [-52.47, -5.53], [-53.0, -5.75], [-53.25, -5.65], [-53.5, -5.75], [-53.8, -5.62], [-53.97, -6.03], [-54.32, -6.18], [-54.47, -6.53], [-55.0, -6.75], [-55.25, -6.65], [-55.5, -6.75], [-55.75, -6.65], [-56.0, -6.75], [-56.53, -6.53]]]]}, "2011-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.53, -6.53], [-56.75, -6.0], [-56.53, -5.47], [-56.0, -5.25], [-55.75, -5.35], [-55.68, -5.32], [-55.65, -5.25], [-55.75, -5.0], [-55.53, -4.47], [-55.0, -4.25], [-54.75, -4.35], [-54.68, -4.32], [-54.65, -4.25], [-54.75, -4.0], [-54.53, -3.47], [-54.0, -3.25], [-53.75, -3.35], [-53.5, -3.25], [-53.25, -3.35], [-53.0, -3.25], [-52.75, -3.35], [-52.5, -3.25], [-52.25, -3.35], [-52.0, -3.25], [-51.47, -3.47], [-51.25, -4.0], [-51.47, -4.53], [-51.82, -4.68], [-51.97, -5.03], [-52.32, -5.18], [-52.47, -5.53], [-53.0, -5.75], [-53.25, -5.65], [-53.5, -5.75], [-53.8, -5.62], [-53.97, -6.03], [-54.32, -6.18], [-54.47, -6.53], [-55.0, -6.75], [-55.25, -6.65], [-55.5, -6.75], [-55.75, -6.65], [-56.0, -6.75], [-56.53, -6.53]]]]}, "2011-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.53, -3.47], [-54.0, -3.25], [-53.75, -3.35], [-53.5, -3.25], [-53.25, -3.35], [-53.0, -3.25], [-52.75, -3.35], [-52.5, -3.25], [-52.25, -3.35], [-52.0, -3.25], [-51.47, -3.47], [-51.25, -4.0], [-51.47, -4.53], [-51.82, -4.68], [-51.97, -5.03], [-52.32, -5.18], [-52.47, -5.53], [-53.0, -5.75], [-53.25, -5.65], [-53.5, -5.75], [-54.03, -5.53], [-54.18, -5.18], [-54.53, -5.03], [-54.75, -4.5], [-54.65, -4.25], [-54.75, -4.0], [-54.53, -3.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.1694849153128644}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.634831873476207}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.185689639150326, 24.19557186739388, 23.98659521910747, 24.42787147441004]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.955268472213618, 23.59677270384765, 23.36302732230996, 23.748832437015324]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6455195442472035, -1.6040968162370777, -1.8372133552770056, -1.3471546609755685]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8655825613623733, -2.1391605707217423, -2.1694849153128644, -1.51576268909605]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4880765939007363, -1.61736567085602, -1.8778618151812312, -1.4027142041111191]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6304942128268947, -1.8746549171347107, -2.5156356237272552, -1.4911631982370663]}}