{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:01:52.144465", "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": "2014-Dec-10_to_2014-Dec-14_298.0_4.5"}, "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": 2014120000499}, "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": "December 10 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 14 2014"}, "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": 86362.64857315052}, "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", "Venezuela"]}, "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": 4.5}, "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": 298.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.0\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": 298.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.25}, "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": {"2014-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.03, 4.53], [-63.68, 4.68], [-63.65, 4.75], [-63.75, 5.0], 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[-61.35, 2.75], [-61.25, 2.5], [-61.47, 1.97], [-62.0, 1.75], [-62.25, 1.85], [-62.5, 1.75], [-62.75, 1.85], [-63.0, 1.75], [-63.5, 1.96], [-64.0, 1.75], [-64.25, 1.85], [-64.5, 1.75], [-65.03, 1.97], [-65.25, 2.5], [-65.15, 2.75], [-65.25, 3.0], [-65.03, 3.53]]]]}, "2014-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.03, 3.53], [-64.5, 3.75], [-64.25, 3.65], [-64.18, 3.68], [-64.15, 3.75], [-64.25, 4.0], [-64.03, 4.53], [-63.68, 4.68], [-63.65, 4.75], [-63.75, 5.0], [-63.53, 5.53], [-63.0, 5.75], [-62.75, 5.65], [-62.5, 5.75], [-62.25, 5.65], [-62.0, 5.75], [-61.75, 5.65], [-61.5, 5.75], [-60.97, 5.53], [-60.75, 5.0], [-60.85, 4.75], [-60.75, 4.5], [-60.85, 4.25], [-60.75, 4.0], [-60.85, 3.75], [-60.75, 3.5], [-60.97, 2.97], [-61.32, 2.82], [-61.35, 2.75], [-61.25, 2.5], [-61.47, 1.97], [-62.0, 1.75], [-62.25, 1.85], [-62.5, 1.75], [-62.75, 1.85], [-63.0, 1.75], [-63.5, 1.96], [-64.0, 1.75], [-64.25, 1.85], [-64.5, 1.75], [-65.03, 1.97], [-65.25, 2.5], [-65.15, 2.75], [-65.25, 3.0], [-65.03, 3.53]]]]}, "2014-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.03, 3.53], [-64.5, 3.75], [-64.2, 3.62], [-64.15, 3.75], [-64.25, 4.0], [-64.03, 4.53], [-63.5, 4.75], [-63.2, 4.62], [-63.03, 5.03], [-62.5, 5.25], [-62.25, 5.15], [-62.0, 5.25], [-61.75, 5.15], [-61.5, 5.25], [-60.97, 5.03], [-60.75, 4.5], [-60.85, 4.25], [-60.75, 4.0], [-60.85, 3.75], [-60.75, 3.5], [-60.97, 2.97], [-61.32, 2.82], [-61.35, 2.75], [-61.25, 2.5], [-61.47, 1.97], [-62.0, 1.75], [-62.25, 1.85], [-62.5, 1.75], [-62.75, 1.85], [-63.0, 1.75], [-63.5, 1.96], [-64.0, 1.75], [-64.25, 1.85], [-64.5, 1.75], [-65.03, 1.97], [-65.25, 2.5], [-65.15, 2.75], [-65.25, 3.0], [-65.03, 3.53]]]]}, "2014-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.03, 2.97], [-64.25, 3.5], [-64.03, 4.03], [-63.5, 4.25], [-62.97, 4.03], [-62.75, 3.5], [-62.97, 2.97], [-63.5, 2.75], [-64.03, 2.97]]], [[[-62.0, 5.25], [-61.75, 5.15], [-61.5, 5.25], [-60.97, 5.03], [-60.75, 4.5], [-60.97, 3.97], [-61.32, 3.82], [-61.47, 3.47], [-62.0, 3.25], [-62.53, 3.47], [-62.75, 4.0], [-62.65, 4.25], [-62.75, 4.5], [-62.53, 5.03], [-62.0, 5.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3356144335557474}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3822233944503584}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.209456110596136, 22.605540105155967, 22.80486891282402, 23.264053580282166, 22.376389231924975]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.861802056426825, 19.877910668219158, 20.264714599542287, 21.158315182682486, 21.41342299392403]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily 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