{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:48.134048", "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-Feb-27_to_2011-Mar-01_313.0_-6.5"}, "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": 2011020001357}, "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": "February 27 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 01 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": 55349.07179944627}, "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.E.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": -6.5}, "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": 313.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "313.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 311.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 313.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.25}, "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": {"2011-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.65, -6.25], [-48.75, -6.0], [-48.53, -5.47], [-48.18, -5.32], [-48.15, -5.25], [-48.25, -5.0], [-48.03, -4.47], [-47.68, -4.32], [-47.53, -3.97], [-47.0, -3.75], [-46.75, -3.85], [-46.5, -3.75], [-45.97, -3.97], [-45.75, -4.5], [-45.85, -4.75], [-45.75, -5.0], [-45.85, -5.25], [-45.75, -5.5], [-45.85, -5.75], [-45.75, -6.0], [-45.85, -6.25], [-45.75, -6.5], [-45.97, -7.03], [-46.5, -7.25], [-46.75, -7.15], [-46.82, -7.18], [-46.97, -7.53], [-47.5, -7.75], [-47.75, -7.65], [-48.0, -7.75], [-48.53, -7.53], [-48.75, -7.0], [-48.65, -6.75], [-48.75, -6.5], [-48.65, -6.25]]]]}, "2011-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.65, -6.25], [-48.75, -6.0], [-48.53, -5.47], [-48.18, -5.32], [-48.15, -5.25], [-48.25, -5.0], [-48.03, -4.47], [-47.68, -4.32], [-47.53, -3.97], [-47.0, -3.75], [-46.75, -3.85], [-46.5, -3.75], [-45.97, -3.97], [-45.75, -4.5], [-45.85, -4.75], [-45.75, -5.0], [-45.85, -5.25], [-45.75, -5.5], [-45.85, -5.75], [-45.75, -6.0], [-45.85, -6.25], [-45.75, -6.5], [-45.97, -7.03], [-46.5, -7.25], [-46.75, -7.15], [-46.82, -7.18], [-46.97, -7.53], [-47.5, -7.75], [-47.75, -7.65], [-48.0, -7.75], [-48.53, -7.53], [-48.75, -7.0], [-48.65, -6.75], [-48.75, -6.5], [-48.65, -6.25]]]]}, "2011-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.65, -6.25], [-48.75, -6.0], [-48.53, -5.47], [-48.18, -5.32], [-48.15, -5.25], [-48.25, -5.0], [-48.03, -4.47], [-47.68, -4.32], [-47.53, -3.97], [-47.0, -3.75], [-46.75, -3.85], [-46.5, -3.75], [-45.97, -3.97], [-45.75, -4.5], [-45.85, -4.75], [-45.75, -5.0], [-45.85, -5.25], [-45.75, -5.5], [-45.85, -5.75], [-45.75, -6.0], [-45.85, -6.25], [-45.75, -6.5], [-45.97, -7.03], [-46.5, -7.25], [-46.75, -7.15], [-46.82, -7.18], [-46.97, -7.53], [-47.5, -7.75], [-47.75, -7.65], [-48.0, -7.75], [-48.53, -7.53], [-48.75, -7.0], [-48.65, -6.75], [-48.75, -6.5], [-48.65, -6.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.5897547627444624}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6847997129930927}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.805492778143616, 24.258961218215575, 23.9567858438877]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.372949641211505, 23.3945807796934, 23.03470746553478]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9134728088571111, -1.4374766552499996, -1.703449674872167]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5897547627444624, -1.765563012114285, -2.1833714374685087]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0354743915236924, -1.5670351745653244, -1.8352721502473142]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.646540459426793, -1.863953580668931, -2.36543177259011]}}