{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:05.840823", "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-Dec-14_to_2011-Dec-17_314.0_-14.5"}, "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": 2011120000792}, "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 14 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 17 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 54069.79749990426}, "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": -14.5}, "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": 314.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "314.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 310.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-46.0, -13.25], [-45.47, -13.47], [-45.25, -14.0], [-45.35, -14.25], [-45.25, -14.5], [-45.47, -15.03], [-46.0, -15.25], [-46.5, -15.04], [-47.0, -15.25], [-47.53, -15.03], [-47.75, -14.5], [-47.53, -13.97], [-47.0, -13.75], [-46.7, -13.88], [-46.53, -13.47], [-46.0, -13.25]]]]}, "2011-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.03, -12.97], [-48.68, -12.82], [-48.65, -12.75], [-48.68, -12.68], [-48.75, -12.65], [-49.0, -12.75], [-49.53, -12.53], [-49.75, -12.0], [-49.53, -11.47], [-49.0, -11.25], [-48.75, -11.35], [-48.5, -11.25], [-47.97, -11.47], [-47.82, -11.82], [-47.75, -11.85], [-47.5, -11.75], [-46.97, -11.97], [-46.75, -12.5], [-46.85, -12.75], [-46.82, -12.82], [-46.47, -12.97], [-46.32, -13.32], [-46.25, -13.35], [-46.0, -13.25], [-45.47, -13.47], [-45.25, -14.0], [-45.35, -14.25], [-45.25, -14.5], [-45.35, -14.75], [-45.25, -15.0], [-45.47, -15.53], [-46.0, -15.75], [-46.5, -15.54], [-47.0, -15.75], [-47.53, -15.53], [-47.75, -15.0], [-47.65, -14.75], [-47.75, -14.5], [-47.65, -14.25], [-47.68, -14.18], [-47.8, -14.12], [-47.97, -14.53], [-48.5, -14.75], [-49.03, -14.53], [-49.25, -14.0], [-49.15, -13.75], [-49.25, -13.5], [-49.03, -12.97]]]]}, "2011-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.03, -12.97], [-48.68, -12.82], [-48.65, -12.75], [-48.68, -12.68], [-48.75, -12.65], [-49.0, -12.75], [-49.53, -12.53], [-49.75, -12.0], [-49.53, -11.47], [-49.0, -11.25], [-48.75, -11.35], [-48.5, -11.25], [-47.97, -11.47], [-47.82, -11.82], [-47.75, -11.85], [-47.5, -11.75], [-46.97, -11.97], [-46.75, -12.5], [-46.85, -12.75], [-46.82, -12.82], [-46.47, -12.97], [-46.32, -13.32], [-46.25, -13.35], [-46.0, -13.25], [-45.47, -13.47], [-45.25, -14.0], [-45.35, -14.25], [-45.25, -14.5], [-45.35, -14.75], [-45.25, -15.0], [-45.47, -15.53], [-46.0, -15.75], [-46.5, -15.54], [-47.0, -15.75], [-47.53, -15.53], [-47.75, -15.0], [-47.65, -14.75], [-47.75, -14.5], [-47.65, -14.25], [-47.68, -14.18], [-47.8, -14.12], [-47.97, -14.53], [-48.5, -14.75], [-49.03, -14.53], [-49.25, -14.0], [-49.15, -13.75], [-49.25, -13.5], [-49.03, -12.97]]]]}, "2011-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.03, -12.97], [-48.68, -12.82], [-48.65, -12.75], [-48.68, -12.68], [-48.75, -12.65], [-49.0, -12.75], [-49.53, -12.53], [-49.75, -12.0], [-49.53, -11.47], [-49.0, -11.25], [-48.75, -11.35], [-48.5, -11.25], [-47.97, -11.47], [-47.82, -11.82], [-47.75, -11.85], [-47.5, -11.75], [-46.97, -11.97], [-46.75, -12.5], [-46.85, -12.75], [-46.82, -12.82], [-46.47, -12.97], [-46.32, -13.32], [-45.97, -13.47], [-45.82, -13.82], [-45.47, -13.97], [-45.25, -14.5], [-45.35, -14.75], [-45.25, -15.0], [-45.47, -15.53], [-46.0, -15.75], [-46.5, -15.54], [-47.0, -15.75], [-47.53, -15.53], [-47.75, -15.0], [-47.65, -14.75], [-47.75, -14.5], [-47.65, -14.25], [-47.68, -14.18], [-47.8, -14.12], [-47.97, -14.53], [-48.5, -14.75], [-49.03, -14.53], [-49.25, -14.0], [-49.15, -13.75], [-49.25, -13.5], [-49.03, -12.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.2257666706077543}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4241200894393344}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.15379059830468, 22.901791400116508, 22.688979122385888, 22.477778079487734]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.064327765912708, 20.97479808716315, 20.81898868499809, 20.641525593088886]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.06560110660223, -2.1672486760457192, -2.4059339330748943, -2.778625572036764]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.522044790081395, -2.5772177450581353, -2.8450887796553843, -3.2257666706077543]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3321907131616817, -1.3339290043861118, -1.4703112543500758, -1.6703244128361614]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3443094361366272, -1.4722267591471043, -1.6281441974263322, -1.9765073416598582]}}