{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:48.933667", "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-Nov-13_to_2011-Nov-15_303.0_-2.5"}, "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": 2011110000721}, "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": "November 13 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 15 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": 71011.597967966}, "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"]}, "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": -2.5}, "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": 303.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "303.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 300.75}, "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": -4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.65, -2.75], [-59.75, -2.5], [-59.53, -1.97], [-59.18, -1.82], [-59.15, -1.75], [-59.25, -1.5], [-59.03, -0.97], [-58.5, -0.75], [-58.25, -0.85], [-58.0, -0.75], [-57.75, -0.85], [-57.5, -0.75], [-57.25, -0.85], [-57.0, -0.75], [-56.47, -0.97], [-56.25, -1.5], [-56.37, -1.8], [-55.97, -1.97], [-55.75, -2.5], [-55.97, -3.03], [-56.32, -3.18], [-56.35, -3.25], [-56.25, -3.5], [-56.47, -4.03], [-57.0, -4.25], [-57.25, -4.15], [-57.5, -4.25], [-57.75, -4.15], [-57.82, -4.18], [-57.97, -4.53], [-58.5, -4.75], [-59.03, -4.53], [-59.18, -4.18], [-59.53, -4.03], [-59.75, -3.5], [-59.65, -3.25], [-59.75, -3.0], [-59.65, -2.75]]]]}, "2011-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.65, -2.75], [-59.75, -2.5], [-59.53, -1.97], [-59.18, -1.82], [-59.15, -1.75], [-59.25, -1.5], [-59.03, -0.97], [-58.5, -0.75], [-58.25, -0.85], [-58.0, -0.75], [-57.75, -0.85], [-57.5, -0.75], [-57.25, -0.85], [-57.0, -0.75], [-56.47, -0.97], [-56.25, -1.5], [-56.37, -1.8], [-55.97, -1.97], [-55.75, -2.5], [-55.97, -3.03], [-56.32, -3.18], [-56.35, -3.25], [-56.25, -3.5], [-56.47, -4.03], [-57.0, -4.25], [-57.25, -4.15], [-57.5, -4.25], [-57.75, -4.15], [-57.82, -4.18], [-57.97, -4.53], [-58.5, -4.75], [-59.03, -4.53], [-59.18, -4.18], [-59.53, -4.03], [-59.75, -3.5], [-59.65, -3.25], [-59.75, -3.0], [-59.65, -2.75]]]]}, "2011-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.65, -2.75], [-59.75, -2.5], [-59.53, -1.97], [-59.18, -1.82], [-59.15, -1.75], [-59.25, -1.5], [-59.03, -0.97], [-58.5, -0.75], [-58.25, -0.85], [-58.0, -0.75], [-57.75, -0.85], [-57.5, -0.75], [-57.25, -0.85], [-57.0, -0.75], [-56.47, -0.97], [-56.25, -1.5], [-56.37, -1.8], [-55.97, -1.97], [-55.75, -2.5], [-55.97, -3.03], [-56.32, -3.18], [-56.35, -3.25], [-56.25, -3.5], [-56.47, -4.03], [-57.0, -4.25], [-57.25, -4.15], [-57.5, -4.25], [-57.75, -4.15], [-57.82, -4.18], [-57.97, -4.53], [-58.5, -4.75], [-59.03, -4.53], [-59.18, -4.18], [-59.53, -4.03], [-59.75, -3.5], [-59.65, -3.25], [-59.75, -3.0], [-59.65, -2.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.8102339478532485}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1638039552987895}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.107899190710214, 24.899551328522477, 25.379392682331343]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.41377496300686, 24.113263606830685, 24.718348183292676]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.228782516103684, -2.401555567787682, -1.8610737820050027]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6901595866753496, -2.8102339478532485, -2.1133732349124443]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.647569418443932, -1.7774635583649814, -1.3527817596637777]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.019696801188022, -2.2175480500047486, -1.5956007517041375]}}