{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:21.481538", "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-May-02_to_2011-May-09_289.0_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": 2011050000243}, "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": "May 02 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 09 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 383092.31477902003}, "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", "Colombia", "Peru", "Venezuela"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.W.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": 289.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "289.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 284.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 293.25}, "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": 4.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.5, 2.25], [-68.25, 2.15], [-68.0, 2.25], [-67.47, 2.03], [-67.25, 1.5], [-67.47, 0.97], [-68.0, 0.75], [-68.25, 0.85], [-68.32, 0.82], [-68.47, 0.47], [-69.0, 0.25], [-69.53, 0.47], [-69.75, 1.0], [-69.53, 1.53], [-69.18, 1.68], [-69.03, 2.03], [-68.5, 2.25]]]]}, "2011-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.18, 2.68], [-75.03, 3.03], [-74.5, 3.25], [-73.97, 3.03], [-73.82, 2.68], [-73.75, 2.65], [-73.5, 2.75], [-73.25, 2.65], [-73.12, 2.7], [-73.25, 3.0], [-73.03, 3.53], [-72.5, 3.75], [-72.25, 3.65], [-72.0, 3.75], [-71.75, 3.65], [-71.5, 3.75], [-71.25, 3.65], [-71.0, 3.75], [-70.75, 3.65], [-70.5, 3.75], [-70.25, 3.65], [-70.0, 3.75], [-69.47, 3.53], [-69.25, 3.0], [-69.35, 2.75], [-69.32, 2.68], [-69.25, 2.65], [-69.0, 2.75], [-68.47, 2.53], [-68.32, 2.18], [-68.25, 2.15], [-68.0, 2.25], [-67.47, 2.03], [-67.32, 1.68], [-66.97, 1.53], [-66.75, 1.0], [-66.85, 0.75], [-66.75, 0.5], [-66.85, 0.25], [-66.75, 0.0], [-66.85, -0.25], [-66.75, -0.5], [-66.97, -1.03], [-67.5, -1.25], [-67.75, -1.15], [-68.0, -1.25], [-68.5, -1.04], [-69.0, -1.25], [-69.25, -1.15], [-69.32, -1.18], [-69.47, -1.53], [-70.0, -1.75], [-70.25, -1.65], [-70.32, -1.68], [-70.47, -2.03], [-71.0, -2.25], [-71.25, -2.15], [-71.5, -2.25], [-72.03, -2.03], [-72.18, -1.68], [-72.25, -1.65], [-72.32, -1.68], [-72.35, -1.75], [-72.25, -2.0], [-72.47, -2.53], [-73.0, -2.75], [-73.25, -2.65], [-73.5, -2.75], [-74.03, -2.53], [-74.25, -2.0], [-74.15, -1.75], [-74.25, -1.5], [-74.15, -1.25], [-74.25, -1.0], [-74.04, -0.5], [-74.25, 0.0], [-74.15, 0.25], [-74.25, 0.5], [-74.12, 0.8], [-74.53, 0.97], [-74.7, 1.38], [-74.82, 1.32], [-74.97, 0.97], [-75.5, 0.75], [-76.03, 0.97], [-76.25, 1.5], [-76.03, 2.03], [-75.68, 2.18], [-75.53, 2.53], [-75.18, 2.68]]]]}, "2011-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.18, 2.68], [-75.03, 3.03], [-74.5, 3.25], [-73.97, 3.03], [-73.82, 2.68], [-73.75, 2.65], [-73.5, 2.75], [-73.25, 2.65], [-73.12, 2.7], [-73.25, 3.0], [-73.03, 3.53], [-72.5, 3.75], [-72.25, 3.65], [-72.0, 3.75], [-71.75, 3.65], [-71.5, 3.75], [-71.25, 3.65], [-71.0, 3.75], [-70.75, 3.65], [-70.68, 3.68], [-70.53, 4.03], [-70.18, 4.18], [-70.03, 4.53], [-69.5, 4.75], [-69.25, 4.65], [-69.0, 4.75], [-68.75, 4.65], [-68.5, 4.75], [-67.97, 4.53], [-67.82, 4.18], [-67.75, 4.15], [-67.5, 4.25], [-66.97, 4.03], [-66.75, 3.5], [-66.85, 3.25], [-66.75, 3.0], [-66.85, 2.75], [-66.82, 2.68], [-66.47, 2.53], [-66.25, 2.0], [-66.47, 1.47], [-66.87, 1.3], [-66.75, 1.0], [-66.85, 0.75], [-66.75, 0.5], [-66.85, 0.25], [-66.75, 0.0], [-66.85, -0.25], [-66.75, -0.5], [-66.97, -1.03], [-67.5, -1.25], [-67.75, -1.15], [-68.0, -1.25], [-68.5, -1.04], [-69.0, -1.25], [-69.25, -1.15], [-69.32, -1.18], [-69.47, -1.53], [-70.0, -1.75], [-70.25, -1.65], [-70.32, -1.68], [-70.47, -2.03], [-71.0, -2.25], [-71.25, -2.15], [-71.5, -2.25], [-72.03, -2.03], [-72.18, -1.68], [-72.25, -1.65], [-72.32, -1.68], [-72.35, -1.75], [-72.25, -2.0], [-72.47, -2.53], [-73.0, -2.75], [-73.25, -2.65], [-73.5, -2.75], [-74.03, -2.53], [-74.25, -2.0], [-74.15, -1.75], [-74.25, -1.5], [-74.15, -1.25], [-74.25, -1.0], [-74.04, -0.5], [-74.25, 0.0], [-74.15, 0.25], [-74.25, 0.5], [-74.12, 0.8], [-74.53, 0.97], [-74.7, 1.38], [-74.82, 1.32], [-74.97, 0.97], [-75.5, 0.75], [-76.03, 0.97], [-76.25, 1.5], [-76.03, 2.03], [-75.68, 2.18], [-75.53, 2.53], [-75.18, 2.68]]]]}, "2011-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.18, 2.68], [-75.03, 3.03], [-74.5, 3.25], [-73.97, 3.03], [-73.82, 2.68], [-73.75, 2.65], [-73.5, 2.75], [-73.25, 2.65], [-73.12, 2.7], [-73.25, 3.0], [-73.03, 3.53], [-72.5, 3.75], [-72.25, 3.65], [-72.0, 3.75], [-71.75, 3.65], [-71.5, 3.75], [-71.25, 3.65], [-71.0, 3.75], [-70.75, 3.65], [-70.68, 3.68], [-70.53, 4.03], [-70.18, 4.18], [-70.03, 4.53], [-69.5, 4.75], [-69.25, 4.65], [-69.0, 4.75], [-68.75, 4.65], [-68.5, 4.75], [-67.97, 4.53], [-67.82, 4.18], [-67.75, 4.15], [-67.5, 4.25], [-66.97, 4.03], [-66.75, 3.5], [-66.85, 3.25], [-66.75, 3.0], [-66.85, 2.75], [-66.82, 2.68], [-66.47, 2.53], [-66.25, 2.0], [-66.47, 1.47], [-66.87, 1.3], [-66.75, 1.0], [-66.85, 0.75], [-66.75, 0.5], [-66.85, 0.25], [-66.75, 0.0], [-66.85, -0.25], [-66.75, -0.5], [-66.97, -1.03], [-67.5, -1.25], [-67.75, -1.15], [-68.0, -1.25], [-68.5, -1.04], [-69.0, -1.25], [-69.25, -1.15], [-69.32, -1.18], [-69.47, -1.53], [-70.0, -1.75], [-70.25, -1.65], [-70.32, -1.68], [-70.47, -2.03], [-71.0, -2.25], [-71.25, -2.15], [-71.5, -2.25], [-72.03, -2.03], [-72.18, -1.68], [-72.25, -1.65], [-72.32, -1.68], [-72.35, -1.75], [-72.25, -2.0], [-72.47, -2.53], [-73.0, -2.75], [-73.25, -2.65], [-73.5, -2.75], [-74.03, -2.53], [-74.25, -2.0], [-74.15, -1.75], [-74.25, -1.5], [-74.15, -1.25], [-74.25, -1.0], [-74.04, -0.5], [-74.25, 0.0], [-74.15, 0.25], [-74.25, 0.5], [-74.12, 0.8], [-74.53, 0.97], [-74.7, 1.38], [-74.82, 1.32], [-74.97, 0.97], [-75.5, 0.75], [-76.03, 0.97], [-76.25, 1.5], [-76.03, 2.03], [-75.68, 2.18], [-75.53, 2.53], [-75.18, 2.68]]]]}, "2011-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.18, 0.18], [-73.03, 0.53], [-72.68, 0.68], [-72.65, 0.75], [-72.68, 0.82], [-73.03, 0.97], [-73.18, 1.32], [-73.53, 1.47], [-73.75, 2.0], [-73.53, 2.53], [-73.0, 2.75], [-72.75, 2.65], [-72.5, 2.75], [-72.25, 2.65], [-72.18, 2.68], [-72.03, 3.03], [-71.68, 3.18], [-71.53, 3.53], [-71.0, 3.75], [-70.75, 3.65], [-70.68, 3.68], [-70.53, 4.03], [-70.18, 4.18], [-70.03, 4.53], [-69.5, 4.75], [-69.25, 4.65], [-69.0, 4.75], [-68.75, 4.65], [-68.5, 4.75], [-67.97, 4.53], [-67.82, 4.18], [-67.75, 4.15], [-67.5, 4.25], [-66.97, 4.03], [-66.75, 3.5], [-66.85, 3.25], [-66.75, 3.0], [-66.85, 2.75], [-66.82, 2.68], [-66.47, 2.53], [-66.25, 2.0], [-66.47, 1.47], [-66.87, 1.3], [-66.75, 1.0], [-66.97, 0.47], [-67.5, 0.25], [-67.75, 0.35], [-68.0, 0.25], [-68.25, 0.35], [-68.32, 0.32], [-68.35, 0.25], [-68.25, 0.0], [-68.47, -0.53], [-69.0, -0.75], [-69.25, -0.65], [-69.32, -0.68], [-69.47, -1.03], [-70.0, -1.25], [-70.25, -1.15], [-70.32, -1.18], [-70.47, -1.53], [-71.0, -1.75], [-71.53, -1.53], [-71.68, -1.18], [-71.75, -1.15], [-72.0, -1.25], [-72.25, -1.15], [-72.32, -1.18], [-72.47, -1.53], [-73.0, -1.75], [-73.25, -1.65], [-73.5, -1.75], [-74.03, -1.53], [-74.25, -1.0], [-74.03, -0.47], [-73.68, -0.32], [-73.53, 0.03], [-73.18, 0.18]]]]}, "2011-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.25, 0.0], [-73.03, 0.53], [-72.68, 0.68], [-72.65, 0.75], [-72.68, 0.82], [-73.03, 0.97], [-73.25, 1.5], [-73.03, 2.03], [-72.68, 2.18], [-72.53, 2.53], [-72.0, 2.75], [-71.47, 2.53], [-71.32, 2.18], [-71.25, 2.15], [-71.0, 2.25], [-70.75, 2.15], [-70.5, 2.25], [-69.97, 2.03], [-69.75, 1.5], [-69.65, 1.75], [-69.75, 2.0], [-69.65, 2.25], [-69.75, 2.5], [-69.65, 2.75], [-69.75, 3.0], [-69.65, 3.25], [-69.75, 3.5], [-69.53, 4.03], [-69.0, 4.25], [-68.75, 4.15], [-68.5, 4.25], [-67.97, 4.03], [-67.75, 3.5], [-67.85, 3.25], [-67.75, 3.0], [-67.96, 2.5], [-67.82, 2.18], [-67.47, 2.03], [-67.32, 1.68], [-66.97, 1.53], [-66.75, 1.0], [-66.97, 0.47], [-67.5, 0.25], [-68.03, 0.47], [-68.18, 0.82], [-68.25, 0.85], [-68.5, 0.75], [-68.75, 0.85], [-69.0, 0.75], [-69.43, 0.93], [-69.25, 0.5], [-69.35, 0.25], [-69.25, 0.0], [-69.35, -0.25], [-69.25, -0.5], [-69.47, -1.03], [-70.0, -1.25], [-70.25, -1.15], [-70.32, -1.18], [-70.47, -1.53], [-71.0, -1.75], [-71.53, -1.53], [-71.68, -1.18], [-71.75, -1.15], [-72.0, -1.25], [-72.53, -1.03], [-72.68, -0.68], [-73.03, -0.53], [-73.25, 0.0]], [[-69.85, 1.25], [-69.82, 1.18], [-69.57, 1.07], [-69.75, 1.5], [-69.85, 1.25]]]]}, "2011-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.0, 2.75], [-71.47, 2.53], [-71.32, 2.18], [-71.25, 2.15], [-71.0, 2.25], [-70.75, 2.15], [-70.5, 2.25], [-69.97, 2.03], [-69.75, 1.5], [-69.85, 1.25], [-69.82, 1.18], [-69.47, 1.03], [-69.25, 0.5], [-69.47, -0.03], [-69.82, -0.18], [-69.97, -0.53], [-70.5, -0.75], [-71.03, -0.53], [-71.18, -0.18], [-71.25, -0.15], [-71.5, -0.25], [-71.8, -0.12], [-71.97, -0.53], [-72.5, -0.75], [-73.03, -0.53], [-73.25, 0.0], [-73.03, 0.53], [-72.5, 0.75], [-72.2, 0.62], [-72.15, 0.75], [-72.18, 0.82], [-72.53, 0.97], [-72.75, 1.5], [-72.65, 1.75], [-72.75, 2.0], [-72.53, 2.53], [-72.0, 2.75]]], [[[-69.75, 3.5], [-69.53, 4.03], [-69.0, 4.25], [-68.75, 4.15], [-68.5, 4.25], [-67.97, 4.03], [-67.75, 3.5], [-67.97, 2.97], [-68.5, 2.75], [-68.75, 2.85], [-69.0, 2.75], [-69.53, 2.97], [-69.75, 3.5]]]]}, "2011-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.53, 0.47], [-71.75, 1.0], [-71.53, 1.53], [-71.0, 1.75], [-70.75, 1.65], [-70.5, 1.75], [-69.97, 1.53], [-69.75, 1.0], [-69.97, 0.47], [-70.5, 0.25], [-70.75, 0.35], [-71.0, 0.25], [-71.53, 0.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.563542839517197}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5799544693510124}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.922142418079204, 23.266699473469203, 22.890848244006975, 23.201657439771623, 23.351493142209904, 23.41973462181096, 23.129619012198077, 23.2082999197159]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.891326566688633, 21.225621439445888, 20.774798931798898, 21.189044363665005, 22.69730611267977, 22.87392113573617, 22.60558206110602, 23.142340599543957]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.16324779399442, -1.5021076876541197, -1.922607249844321, -1.579010383816107, -1.4071584640439543, -1.2083503223636174, -1.3059737558221904, -1.0884904475580015]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.187216148410755, -2.098223143707969, -2.4252777202332254, -2.563542839517197, -1.9503817848297444, -1.5050044921011931, -1.621262812322243, -1.1156672084820798]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.389998911175779, -1.7765683493621345, -2.2907608844285954, -1.9232260682363895, -1.7541661096978816, -1.514542672081268, -1.728228210221775, -1.456599775484999]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4202992586053749, -2.536412964041918, -3.047150684727886, -3.3105162764466805, -2.494388611360218, -1.8072427108417064, -2.310881263497783, -1.5226952151956055]}}