{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:28.685538", "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-31_to_2011-Jun-04_300.0_3.0"}, "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": 2011050001436}, "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 31 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 2011"}, "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": 101908.01579417313}, "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", "Suriname"]}, "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": 3.0}, "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": 300.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 3.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.0, 3.75], [-59.47, 3.53], [-59.25, 3.0], [-59.47, 2.47], [-60.0, 2.25], [-60.53, 2.47], [-60.75, 3.0], [-60.53, 3.53], [-60.0, 3.75]]]]}, "2011-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.5, 3.75], [-60.25, 3.65], [-60.0, 3.75], [-59.75, 3.65], [-59.5, 3.75], [-58.97, 3.53], [-58.75, 3.0], [-58.97, 2.47], [-59.5, 2.25], [-59.75, 2.35], [-59.82, 2.32], [-59.97, 1.97], [-60.5, 1.75], [-60.75, 1.85], [-61.0, 1.75], [-61.53, 1.97], [-61.75, 2.5], [-61.53, 3.03], [-61.18, 3.18], [-61.03, 3.53], [-60.5, 3.75]]]]}, "2011-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.15, 2.25], [-62.25, 2.5], [-62.03, 3.03], [-61.5, 3.25], [-61.25, 3.15], [-61.18, 3.18], [-61.03, 3.53], [-60.5, 3.75], [-60.25, 3.65], [-60.0, 3.75], [-59.75, 3.65], [-59.5, 3.75], [-59.25, 3.65], [-59.0, 3.75], [-58.75, 3.65], [-58.5, 3.75], [-58.25, 3.65], [-58.18, 3.68], [-58.03, 4.03], [-57.5, 4.25], [-57.25, 4.15], [-57.0, 4.25], [-56.47, 4.03], [-56.32, 3.68], [-55.97, 3.53], [-55.75, 3.0], [-55.85, 2.75], [-55.75, 2.5], [-55.97, 1.97], [-56.5, 1.75], [-56.75, 1.85], [-57.0, 1.75], [-57.25, 1.85], [-57.5, 1.75], [-57.75, 1.85], [-57.82, 1.82], [-57.97, 1.47], [-58.32, 1.32], [-58.47, 0.97], [-59.0, 0.75], [-59.5, 0.96], [-60.0, 0.75], [-60.25, 0.85], [-60.5, 0.75], [-60.75, 0.85], [-61.0, 0.75], [-61.25, 0.85], [-61.5, 0.75], [-62.03, 0.97], [-62.25, 1.5], [-62.15, 1.75], [-62.25, 2.0], [-62.15, 2.25]]]]}, "2011-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.15, 2.25], [-62.25, 2.5], [-62.03, 3.03], [-61.5, 3.25], [-61.25, 3.15], [-61.18, 3.18], [-61.03, 3.53], [-60.5, 3.75], [-60.25, 3.65], [-60.0, 3.75], [-59.75, 3.65], [-59.5, 3.75], [-59.25, 3.65], [-59.0, 3.75], [-58.75, 3.65], [-58.5, 3.75], [-58.25, 3.65], [-58.18, 3.68], [-58.03, 4.03], [-57.5, 4.25], [-57.25, 4.15], [-57.0, 4.25], [-56.47, 4.03], [-56.32, 3.68], [-55.97, 3.53], [-55.75, 3.0], [-55.85, 2.75], [-55.75, 2.5], [-55.97, 1.97], [-56.5, 1.75], [-56.75, 1.85], [-57.0, 1.75], [-57.25, 1.85], [-57.5, 1.75], [-57.75, 1.85], [-57.82, 1.82], [-57.97, 1.47], [-58.32, 1.32], [-58.47, 0.97], [-59.0, 0.75], [-59.5, 0.96], [-60.0, 0.75], [-60.25, 0.85], [-60.5, 0.75], [-60.75, 0.85], [-61.0, 0.75], [-61.25, 0.85], [-61.5, 0.75], [-62.03, 0.97], [-62.25, 1.5], [-62.15, 1.75], [-62.25, 2.0], [-62.15, 2.25]]]]}, "2011-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.15, 2.25], [-62.25, 2.5], [-62.03, 3.03], [-61.5, 3.25], [-61.25, 3.15], [-61.18, 3.18], [-61.03, 3.53], [-60.5, 3.75], [-60.25, 3.65], [-60.0, 3.75], [-59.75, 3.65], [-59.5, 3.75], [-59.25, 3.65], [-59.0, 3.75], [-58.75, 3.65], [-58.5, 3.75], [-58.25, 3.65], [-58.18, 3.68], [-58.03, 4.03], [-57.5, 4.25], [-57.25, 4.15], [-57.0, 4.25], [-56.47, 4.03], [-56.32, 3.68], [-55.97, 3.53], [-55.75, 3.0], [-55.85, 2.75], [-55.75, 2.5], [-55.97, 1.97], [-56.5, 1.75], [-56.75, 1.85], [-57.0, 1.75], [-57.25, 1.85], [-57.5, 1.75], [-57.75, 1.85], [-57.82, 1.82], [-57.97, 1.47], [-58.32, 1.32], [-58.47, 0.97], [-59.0, 0.75], [-59.5, 0.96], [-60.0, 0.75], [-60.25, 0.85], [-60.5, 0.75], [-60.75, 0.85], [-61.0, 0.75], [-61.25, 0.85], [-61.5, 0.75], [-62.03, 0.97], [-62.25, 1.5], [-62.15, 1.75], [-62.25, 2.0], [-62.15, 2.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.311168199893814}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.686179932329762}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.526240290903445, 24.2221567350187, 23.701005579260823, 23.20220724834968, 23.497500267351768]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.526240290903445, 23.844334352320345, 22.8955365592347, 22.27404693780801, 22.86224824357845]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily 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