{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:07.769542", "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-23_to_2011-Dec-25_299.5_-34.0"}, "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": 2011120001187}, "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 23 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 25 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": 94957.02340672995}, "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": ["Argentina"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": -34.0}, "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": 299.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.15, -32.25], [-64.25, -32.0], [-64.03, -31.47], [-63.5, -31.25], [-62.97, -31.47], [-62.82, -31.82], [-62.47, -31.97], [-62.32, -32.32], [-62.25, -32.35], [-62.0, -32.25], [-61.75, -32.35], [-61.5, -32.25], [-61.25, -32.35], [-61.0, -32.25], [-60.47, -32.47], [-60.32, -32.82], [-60.25, -32.85], [-60.0, -32.75], [-59.75, -32.85], [-59.5, -32.75], [-59.25, -32.85], [-59.0, -32.75], [-58.47, -32.97], [-58.25, -33.5], [-58.35, -33.75], [-58.25, -34.0], [-58.35, -34.25], [-58.32, -34.32], [-57.97, -34.47], [-57.75, -35.0], [-57.97, -35.53], [-58.32, -35.68], [-58.47, -36.03], [-59.0, -36.25], [-59.25, -36.15], [-59.5, -36.25], [-60.03, -36.03], [-60.18, -35.68], [-60.25, -35.65], [-60.5, -35.75], [-61.03, -35.53], [-61.18, -35.18], [-61.53, -35.03], [-61.68, -34.68], [-61.75, -34.65], [-62.0, -34.75], [-62.53, -34.53], [-62.68, -34.18], [-62.75, -34.15], [-63.0, -34.25], [-63.53, -34.03], [-63.68, -33.68], [-64.03, -33.53], [-64.25, -33.0], [-64.15, -32.75], [-64.25, -32.5], [-64.15, -32.25]]]]}, "2011-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.15, -32.25], [-64.25, -32.0], [-64.03, -31.47], [-63.5, -31.25], [-62.97, -31.47], [-62.82, -31.82], [-62.47, -31.97], [-62.32, -32.32], [-62.25, -32.35], [-62.0, -32.25], [-61.75, -32.35], [-61.5, -32.25], [-61.25, -32.35], [-61.0, -32.25], [-60.47, -32.47], [-60.32, -32.82], [-60.25, -32.85], [-60.0, -32.75], [-59.75, -32.85], [-59.5, -32.75], [-59.25, -32.85], [-59.0, -32.75], [-58.47, -32.97], [-58.25, -33.5], [-58.35, -33.75], [-58.25, -34.0], [-58.35, -34.25], [-58.32, -34.32], [-57.97, -34.47], [-57.75, -35.0], [-57.97, -35.53], [-58.32, -35.68], [-58.47, -36.03], [-59.0, -36.25], [-59.25, -36.15], [-59.5, -36.25], [-60.03, -36.03], [-60.18, -35.68], [-60.25, -35.65], [-60.5, -35.75], [-61.03, -35.53], [-61.18, -35.18], [-61.53, -35.03], [-61.68, -34.68], [-61.75, -34.65], [-62.0, -34.75], [-62.53, -34.53], [-62.68, -34.18], [-62.75, -34.15], [-63.0, -34.25], [-63.53, -34.03], [-63.68, -33.68], [-64.03, -33.53], [-64.25, -33.0], [-64.15, -32.75], [-64.25, -32.5], [-64.15, -32.25]]]]}, "2011-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.15, -32.25], [-64.25, -32.0], [-64.03, -31.47], [-63.5, -31.25], [-62.97, -31.47], [-62.82, -31.82], [-62.47, -31.97], [-62.32, -32.32], [-62.25, -32.35], [-62.0, -32.25], [-61.75, -32.35], [-61.5, -32.25], [-61.25, -32.35], [-61.0, -32.25], [-60.47, -32.47], [-60.32, -32.82], [-60.25, -32.85], [-60.0, -32.75], [-59.75, -32.85], [-59.5, -32.75], [-59.25, -32.85], [-59.0, -32.75], [-58.47, -32.97], [-58.25, -33.5], [-58.35, -33.75], [-58.25, -34.0], [-58.35, -34.25], [-58.32, -34.32], [-57.97, -34.47], [-57.75, -35.0], [-57.97, -35.53], [-58.32, -35.68], [-58.47, -36.03], [-59.0, -36.25], [-59.25, -36.15], [-59.5, -36.25], [-60.03, -36.03], [-60.18, -35.68], [-60.25, -35.65], [-60.5, -35.75], [-61.03, -35.53], [-61.18, -35.18], [-61.53, -35.03], [-61.68, -34.68], [-61.75, -34.65], [-62.0, -34.75], [-62.53, -34.53], [-62.68, -34.18], [-62.75, -34.15], [-63.0, -34.25], [-63.53, -34.03], [-63.68, -33.68], [-64.03, -33.53], [-64.25, -33.0], [-64.15, -32.75], [-64.25, -32.5], [-64.15, -32.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.661498471885011}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.501764598349669}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.711878715245348, 16.43600164333168, 18.860892265197776]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.5653135923921, 15.311317176305238, 17.946751665576585]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.586450154063289, -7.083699108526204, -4.835144532459514]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.38901365642306, -7.661498471885011, -5.410105692836851]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6151879451827245, -2.476398701493855, -1.7322703907408978]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8792303627863125, -2.6491957396143135, -1.8732207603816329]}}