{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:21.810018", "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-Sep-06_to_2013-Sep-10_301.5_2.0"}, "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": 2013090000413}, "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": "September 06 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 10 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": 219416.74897096335}, "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": 2.0}, "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": 295.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -1.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, 1.0], [-65.03, 1.53], [-64.5, 1.75], [-64.25, 1.65], [-64.0, 1.75], [-63.47, 1.53], [-63.32, 1.18], [-63.0, 1.04], [-62.68, 1.18], [-62.65, 1.25], [-62.75, 1.5], [-62.53, 2.03], [-62.0, 2.25], [-61.47, 2.03], [-61.32, 1.68], [-61.25, 1.65], [-61.0, 1.75], [-60.75, 1.65], [-60.68, 1.68], [-60.53, 2.03], [-60.0, 2.25], [-59.47, 2.03], [-59.32, 1.68], [-58.97, 1.53], [-58.75, 1.0], [-58.97, 0.47], [-59.32, 0.32], [-59.35, 0.25], [-59.25, 0.0], [-59.35, -0.25], [-59.25, -0.5], [-59.35, -0.75], [-59.25, -1.0], [-59.35, -1.25], [-59.25, -1.5], [-59.47, -2.03], [-60.0, -2.25], [-60.53, -2.03], [-60.68, -1.68], [-61.03, -1.53], [-61.18, -1.18], [-61.25, -1.15], [-61.5, -1.25], [-62.03, -1.03], [-62.18, -0.68], [-62.25, -0.65], [-62.5, -0.75], [-62.75, -0.65], [-63.0, -0.75], [-63.25, -0.65], [-63.5, -0.75], [-63.75, -0.65], [-64.0, -0.75], [-64.53, -0.53], [-64.75, 0.0], [-64.65, 0.25], [-64.68, 0.32], [-65.03, 0.47], [-65.25, 1.0]]]]}, "2013-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, 1.0], [-65.03, 1.53], [-64.5, 1.75], [-64.25, 1.65], [-64.0, 1.75], [-63.47, 1.53], [-63.32, 1.18], [-63.0, 1.04], [-62.68, 1.18], [-62.65, 1.25], [-62.75, 1.5], [-62.53, 2.03], [-62.0, 2.25], [-61.47, 2.03], [-61.32, 1.68], [-61.25, 1.65], [-61.0, 1.75], [-60.75, 1.65], [-60.68, 1.68], [-60.65, 1.75], [-60.75, 2.0], [-60.65, 2.25], [-60.75, 2.5], [-60.53, 3.03], [-60.0, 3.25], [-59.75, 3.15], [-59.68, 3.18], [-59.53, 3.53], [-59.0, 3.75], [-58.47, 3.53], [-58.32, 3.18], [-57.97, 3.03], [-57.75, 2.5], [-57.85, 2.25], [-57.82, 2.18], [-57.75, 2.15], [-57.5, 2.25], [-56.97, 2.03], [-56.75, 1.5], [-56.97, 0.97], [-57.37, 0.8], [-57.32, 0.68], [-56.97, 0.53], [-56.75, 0.0], [-56.85, -0.25], [-56.75, -0.5], [-56.97, -1.03], [-57.32, -1.18], [-57.35, -1.25], [-57.25, -1.5], [-57.47, -2.03], [-58.0, -2.25], [-58.53, -2.03], [-58.68, -1.68], [-58.75, -1.65], [-58.82, -1.68], [-58.97, -2.03], [-59.5, -2.25], [-59.75, -2.15], [-60.0, -2.25], [-60.53, -2.03], [-60.68, -1.68], [-61.03, -1.53], [-61.18, -1.18], [-61.25, -1.15], [-61.5, -1.25], [-62.03, -1.03], [-62.18, -0.68], [-62.25, -0.65], [-62.5, -0.75], [-62.75, -0.65], [-63.0, -0.75], [-63.25, -0.65], [-63.5, -0.75], [-63.75, -0.65], [-64.0, -0.75], [-64.53, -0.53], [-64.75, 0.0], [-64.65, 0.25], [-64.68, 0.32], [-65.03, 0.47], [-65.25, 1.0]]]]}, "2013-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.25, 1.0], [-65.03, 1.53], [-64.5, 1.75], [-64.25, 1.65], [-64.0, 1.75], [-63.47, 1.53], [-63.32, 1.18], [-63.0, 1.04], [-62.68, 1.18], [-62.65, 1.25], [-62.75, 1.5], [-62.53, 2.03], [-62.0, 2.25], [-61.47, 2.03], [-61.32, 1.68], [-61.25, 1.65], [-61.0, 1.75], [-60.75, 1.65], [-60.68, 1.68], [-60.65, 1.75], [-60.75, 2.0], [-60.65, 2.25], [-60.75, 2.5], [-60.65, 2.75], [-60.75, 3.0], [-60.53, 3.53], [-60.0, 3.75], [-59.75, 3.65], [-59.5, 3.75], [-59.25, 3.65], [-59.0, 3.75], [-58.47, 3.53], [-58.32, 3.18], [-57.97, 3.03], [-57.75, 2.5], [-57.85, 2.25], [-57.82, 2.18], [-57.75, 2.15], [-57.5, 2.25], [-56.97, 2.03], [-56.75, 1.5], [-56.85, 1.25], [-56.75, 1.0], [-56.96, 0.5], [-56.82, 0.18], [-56.47, 0.03], [-56.25, -0.5], [-56.47, -1.03], [-57.0, -1.25], [-57.25, -1.15], [-57.32, -1.18], [-57.35, -1.25], [-57.25, -1.5], [-57.47, -2.03], [-58.0, -2.25], [-58.53, -2.03], [-58.68, -1.68], [-58.75, -1.65], [-58.82, -1.68], [-58.97, -2.03], [-59.5, -2.25], [-59.75, -2.15], [-60.0, -2.25], [-60.53, -2.03], [-60.68, -1.68], [-61.03, -1.53], [-61.18, -1.18], [-61.25, -1.15], [-61.5, -1.25], [-62.03, -1.03], [-62.18, -0.68], [-62.25, -0.65], [-62.5, -0.75], [-62.75, -0.65], [-63.0, -0.75], [-63.25, -0.65], [-63.5, -0.75], [-63.75, -0.65], [-64.0, -0.75], [-64.53, -0.53], [-64.75, 0.0], [-64.65, 0.25], [-64.68, 0.32], [-65.03, 0.47], [-65.25, 1.0]]]]}, "2013-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.25, -1.0], [-61.03, -0.47], [-60.62, -0.3], [-60.75, 0.0], [-60.53, 0.53], [-60.18, 0.68], [-60.15, 0.75], [-60.25, 1.0], [-60.15, 1.25], [-60.18, 1.32], [-60.53, 1.47], [-60.75, 2.0], [-60.65, 2.25], [-60.75, 2.5], [-60.65, 2.75], [-60.75, 3.0], [-60.53, 3.53], [-60.0, 3.75], [-59.75, 3.65], [-59.5, 3.75], [-59.25, 3.65], [-59.0, 3.75], [-58.47, 3.53], [-58.32, 3.18], [-57.97, 3.03], [-57.75, 2.5], [-57.85, 2.25], [-57.82, 2.18], [-57.75, 2.15], [-57.5, 2.25], [-56.97, 2.03], [-56.75, 1.5], [-56.85, 1.25], [-56.75, 1.0], [-56.96, 0.5], [-56.82, 0.18], [-56.47, 0.03], [-56.25, -0.5], [-56.47, -1.03], [-57.0, -1.25], [-57.25, -1.15], [-57.32, -1.18], [-57.35, -1.25], [-57.25, -1.5], [-57.47, -2.03], [-58.0, -2.25], [-58.53, -2.03], [-58.68, -1.68], [-58.75, -1.65], [-58.82, -1.68], [-58.97, -2.03], [-59.5, -2.25], [-59.75, -2.15], [-60.0, -2.25], [-60.53, -2.03], [-60.68, -1.68], [-61.03, -1.53], [-61.25, -1.0]]]]}, "2013-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.65, 2.75], [-60.75, 3.0], [-60.53, 3.53], [-60.0, 3.75], [-59.75, 3.65], [-59.5, 3.75], [-59.25, 3.65], [-59.0, 3.75], [-58.47, 3.53], [-58.32, 3.18], [-57.97, 3.03], [-57.75, 2.5], [-57.85, 2.25], [-57.82, 2.18], [-57.75, 2.15], [-57.5, 2.25], [-56.97, 2.03], [-56.75, 1.5], [-56.85, 1.25], [-56.75, 1.0], [-56.96, 0.5], [-56.82, 0.18], [-56.47, 0.03], [-56.25, -0.5], [-56.47, -1.03], [-57.0, -1.25], [-57.25, -1.15], [-57.5, -1.25], [-58.0, -1.04], [-58.32, -1.18], [-58.47, -1.53], [-59.0, -1.75], [-59.3, -1.62], [-59.47, -2.03], [-60.0, -2.25], [-60.53, -2.03], [-60.75, -1.5], [-60.53, -0.97], [-60.12, -0.8], [-60.18, -0.68], [-60.53, -0.53], [-60.75, 0.0], [-60.53, 0.53], [-60.18, 0.68], [-60.15, 0.75], [-60.25, 1.0], [-60.15, 1.25], [-60.18, 1.32], [-60.53, 1.47], [-60.75, 2.0], [-60.65, 2.25], [-60.75, 2.5], [-60.65, 2.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.848317130160865}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7159962507415576}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.892348488259984, 24.597197174746725, 24.579150920161908, 24.380546460282403, 24.118315071709787]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.59277696453347, 23.181034166478184, 23.26926476606144, 23.60510272468747, 22.781149061735448]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3352617923463383, -1.6330125584263409, -1.701961729397607, -1.914049047315788, -2.044911325149199]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4990969232120506, -2.848317130160865, -2.526124432021902, -2.782714446826901, -2.7085629080555123]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3430922548236628, -1.4970741009814048, -1.568462944338321, -1.5603920139933758, -1.656871767931902]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7030045727497645, -1.9768269295928236, -2.322119596127032, -1.8680128996420262, -2.2885888932448584]}}