{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:08.899879", "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-Apr-07_to_2011-Apr-09_301.5_1.0"}, "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": 2011040000438}, "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": "April 07 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 09 2011"}, "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": 55634.105601942036}, "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", "Guyana"]}, "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": 1.0}, "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": 301.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 302.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 1.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.25, 0.5], [-61.03, 1.03], [-60.68, 1.18], [-60.53, 1.53], [-60.0, 1.75], [-59.75, 1.65], [-59.68, 1.68], [-59.53, 2.03], [-59.0, 2.25], [-58.75, 2.15], [-58.5, 2.25], [-57.97, 2.03], [-57.82, 1.68], [-57.47, 1.53], [-57.25, 1.0], [-57.47, 0.47], [-57.82, 0.32], [-57.85, 0.25], [-57.75, 0.0], [-57.85, -0.25], [-57.75, -0.5], [-57.97, -1.03], [-58.5, -1.25], [-58.75, -1.15], [-59.0, -1.25], [-59.53, -1.03], [-59.68, -0.68], [-59.75, -0.65], [-60.0, -0.75], [-60.53, -0.53], [-60.68, -0.18], [-61.03, -0.03], [-61.25, 0.5]]]]}, "2011-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.25, 0.5], [-61.03, 1.03], [-60.68, 1.18], [-60.53, 1.53], [-60.0, 1.75], [-59.75, 1.65], [-59.68, 1.68], [-59.53, 2.03], [-59.0, 2.25], [-58.75, 2.15], [-58.5, 2.25], [-57.97, 2.03], [-57.82, 1.68], [-57.47, 1.53], [-57.25, 1.0], [-57.47, 0.47], [-57.82, 0.32], [-57.85, 0.25], [-57.75, 0.0], [-57.85, -0.25], [-57.75, -0.5], [-57.97, -1.03], [-58.5, -1.25], [-58.75, -1.15], [-59.0, -1.25], [-59.53, -1.03], [-59.68, -0.68], [-59.75, -0.65], [-60.0, -0.75], [-60.53, -0.53], [-60.68, -0.18], [-61.03, -0.03], [-61.25, 0.5]]]]}, "2011-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.25, 0.5], [-61.03, 1.03], [-60.68, 1.18], [-60.53, 1.53], [-60.0, 1.75], [-59.75, 1.65], [-59.68, 1.68], [-59.53, 2.03], [-59.0, 2.25], [-58.75, 2.15], [-58.5, 2.25], [-57.97, 2.03], [-57.82, 1.68], [-57.47, 1.53], [-57.25, 1.0], [-57.47, 0.47], [-57.82, 0.32], [-57.85, 0.25], [-57.75, 0.0], [-57.85, -0.25], [-57.75, -0.5], [-57.97, -1.03], [-58.5, -1.25], [-58.75, -1.15], [-59.0, -1.25], [-59.53, -1.03], [-59.68, -0.68], [-59.75, -0.65], [-60.0, -0.75], [-60.53, -0.53], [-60.68, -0.18], [-61.03, -0.03], [-61.25, 0.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.124643044192169}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1142424508498427}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.34714017611509, 22.770344326481165, 23.29398658250119]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.548574127331506, 21.725993561865096, 21.94299800440831]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9378770489129868, -2.475788677894024, -1.9290616257425168]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.244290387172555, -2.7888887112590623, -3.124643044192169]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.752382946314082, -2.27416850255888, -1.7706704167764904]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.058477781503017, -2.5969900491628075, -2.8568099380759304]}}