{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-28 16:41:20.378146", "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": "2026-Jul-14_to_2026-Jul-20_313.0_-6.5"}, "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": 2026070000521}, "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": true}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "July 14 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 20 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 67574.11323333124}, "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": []}, "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": -6.5}, "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": 313.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "313.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 311.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.75, -6.0], [-48.53, -5.47], [-48.0, -5.25], [-47.75, -5.35], [-47.5, -5.25], [-47.25, -5.35], [-47.0, -5.25], [-46.47, -5.47], [-46.25, -6.0], [-46.35, -6.25], [-46.25, -6.5], [-46.47, -7.03], [-47.0, -7.25], [-47.25, -7.15], [-47.5, -7.25], [-48.03, -7.03], [-48.18, -6.68], [-48.53, -6.53], [-48.75, -6.0]]]]}, "2026-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.15, -6.25], [-49.25, -6.0], [-49.03, -5.47], [-48.5, -5.25], [-48.25, -5.35], [-48.0, -5.25], [-47.75, -5.35], [-47.68, -5.32], [-47.53, -4.97], [-47.0, -4.75], [-46.75, -4.85], [-46.5, -4.75], [-46.25, -4.85], [-46.0, -4.75], [-45.75, -4.85], [-45.5, -4.75], [-44.97, -4.97], [-44.75, -5.5], [-44.97, -6.03], [-45.32, -6.18], [-45.47, -6.53], [-45.82, -6.68], [-45.85, -6.75], [-45.75, -7.0], [-45.97, -7.53], [-46.32, -7.68], [-46.47, -8.03], [-47.0, -8.25], [-47.53, -8.03], [-47.68, -7.68], [-47.75, -7.65], [-48.0, -7.75], [-48.25, -7.65], [-48.5, -7.75], [-49.03, -7.53], [-49.25, -7.0], [-49.15, -6.75], [-49.25, -6.5], [-49.15, -6.25]]]]}, "2026-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.15, -6.25], [-49.25, -6.0], [-49.03, -5.47], [-48.5, -5.25], [-48.25, -5.35], [-48.0, -5.25], [-47.75, -5.35], [-47.68, -5.32], [-47.53, -4.97], [-47.0, -4.75], [-46.75, -4.85], [-46.5, -4.75], [-46.25, -4.85], [-46.0, -4.75], [-45.75, -4.85], [-45.5, -4.75], [-44.97, -4.97], [-44.75, -5.5], [-44.97, -6.03], [-45.32, -6.18], [-45.47, -6.53], [-45.82, -6.68], [-45.85, -6.75], [-45.75, -7.0], [-45.97, -7.53], [-46.32, -7.68], [-46.47, -8.03], [-47.0, -8.25], [-47.53, -8.03], [-47.68, -7.68], [-47.75, -7.65], [-48.0, -7.75], [-48.25, -7.65], [-48.5, -7.75], [-49.03, -7.53], [-49.25, -7.0], [-49.15, -6.75], [-49.25, -6.5], [-49.15, -6.25]]]]}, "2026-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.15, -6.25], [-49.25, -6.0], [-49.03, -5.47], [-48.5, -5.25], [-48.25, -5.35], [-48.0, -5.25], [-47.75, -5.35], [-47.68, -5.32], [-47.53, -4.97], [-47.0, -4.75], [-46.75, -4.85], [-46.5, -4.75], [-46.25, -4.85], [-46.0, -4.75], [-45.75, -4.85], [-45.5, -4.75], [-44.97, -4.97], [-44.75, -5.5], [-44.97, -6.03], [-45.32, -6.18], [-45.47, -6.53], [-45.82, -6.68], [-45.85, -6.75], [-45.75, -7.0], [-45.97, -7.53], [-46.32, -7.68], [-46.47, -8.03], [-47.0, -8.25], [-47.53, -8.03], [-47.68, -7.68], [-47.75, -7.65], [-48.0, -7.75], [-48.25, -7.65], [-48.5, -7.75], [-49.03, -7.53], [-49.25, -7.0], [-49.15, -6.75], [-49.25, -6.5], [-49.15, -6.25]]]]}, "2026-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, -5.47], [-48.0, -5.25], [-47.75, -5.35], [-47.68, -5.32], [-47.53, -4.97], [-47.0, -4.75], [-46.75, -4.85], [-46.5, -4.75], [-46.25, -4.85], [-46.0, -4.75], [-45.47, -4.97], [-45.25, -5.5], [-45.47, -6.03], [-45.82, -6.18], [-45.85, -6.25], [-45.75, -6.5], [-45.85, -6.75], [-45.75, -7.0], [-45.96, -7.5], [-45.75, -8.0], [-45.97, -8.53], [-46.5, -8.75], [-47.03, -8.53], [-47.18, -8.18], [-47.53, -8.03], [-47.75, -7.5], [-47.65, -7.25], [-47.68, -7.18], [-47.75, -7.15], [-48.0, -7.25], [-48.53, -7.03], [-48.75, -6.5], [-48.65, -6.25], [-48.75, -6.0], [-48.53, -5.47]]]]}, "2026-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, -7.03], [-48.75, -6.5], [-48.53, -5.97], [-48.0, -5.75], [-47.75, -5.85], [-47.5, -5.75], [-47.25, -5.85], [-47.0, -5.75], [-46.75, -5.85], [-46.5, -5.75], [-45.97, -5.97], [-45.75, -6.5], [-45.85, -6.75], [-45.75, -7.0], [-45.96, -7.5], [-45.75, -8.0], [-45.97, -8.53], [-46.5, -8.75], [-47.03, -8.53], [-47.25, -8.0], [-47.12, -7.7], [-47.53, -7.53], [-47.68, -7.18], [-47.75, -7.15], [-48.0, -7.25], [-48.53, -7.03]]]]}, "2026-07-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.53, -7.03], [-48.75, -6.5], [-48.53, -5.97], [-48.0, -5.75], [-47.75, -5.85], [-47.5, -5.75], [-47.25, -5.85], [-47.0, -5.75], [-46.75, -5.85], [-46.5, -5.75], [-45.97, -5.97], [-45.75, -6.5], [-45.85, -6.75], [-45.75, -7.0], [-45.96, -7.5], [-45.75, -8.0], [-45.97, -8.53], [-46.5, -8.75], [-47.03, -8.53], [-47.25, -8.0], [-47.12, -7.7], [-47.53, -7.53], [-47.68, -7.18], [-47.75, -7.15], [-48.0, -7.25], [-48.53, -7.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.3678718346588994}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5780490800593443}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.713551584879554, 24.880426933651904, 25.5270137605213, 25.777402133033434, 25.952414703369186, 26.028809937976746, 25.790960112072128]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.512835439046228, 23.813555653889978, 24.80124181111654, 24.903564707438193, 25.06107355753585, 25.59262364705404, 25.476820882161462]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0611804442135848, -2.29147429953941, -1.6293915383654665, -1.3713289789275196, -1.2410281441867368, -1.1686048081009435, -1.4047302245286428]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3166831049825305, -3.3678718346588994, -2.003421087235324, -1.849968198479985, -1.512985422603947, -1.3607458953856622, -1.4751800475852406]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.441232234742372, -2.962135741376528, -2.119358917084832, -1.7379375807848434, -1.5108308608459626, -1.3576474015979068, -1.5751127829270728]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6828614042665913, -4.580036332680239, -2.8005360451724965, -2.360909839984371, -1.8607530067386868, -1.5258864865893302, -1.6765366417916179]}}