{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:02.549358", "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": "2012-Dec-27_to_2013-Jan-01_292.0_-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": 2012120001078}, "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 27 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 01 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 83045.78728384465}, "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", "Colombia"]}, "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": -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": 292.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "292.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 288.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 292.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.5, -3.25], [-67.97, -3.47], [-67.75, -4.0], [-67.97, -4.53], [-68.5, -4.75], [-69.03, -4.53], [-69.25, -4.0], [-69.03, -3.47], [-68.5, -3.25]]]]}, "2012-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.5, -3.25], [-67.97, -3.47], [-67.75, -4.0], [-67.97, -4.53], [-68.5, -4.75], [-69.03, -4.53], [-69.25, -4.0], [-69.03, -3.47], [-68.5, -3.25]]]]}, "2012-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.5, -5.75], [-70.25, -5.85], [-70.0, -5.75], [-69.75, -5.85], [-69.68, -5.82], [-69.65, -5.75], [-69.75, -5.5], [-69.53, -4.97], [-69.18, -4.82], [-69.04, -4.5], [-69.25, -4.0], [-69.03, -3.47], [-68.5, -3.25], [-67.97, -3.47], [-67.75, -4.0], [-67.96, -4.5], [-67.8, -4.88], [-67.5, -4.75], [-66.97, -4.97], [-66.75, -5.5], [-66.97, -6.03], [-67.32, -6.18], [-67.35, -6.25], [-67.25, -6.5], [-67.47, -7.03], [-67.82, -7.18], [-67.97, -7.53], [-68.32, -7.68], [-68.47, -8.03], [-69.0, -8.25], [-69.53, -8.03], [-69.68, -7.68], [-70.03, -7.53], [-70.18, -7.18], [-70.25, -7.15], [-70.32, -7.18], [-70.47, -7.53], [-71.0, -7.75], [-71.53, -7.53], [-71.75, -7.0], [-71.53, -6.47], [-71.18, -6.32], [-71.03, -5.97], [-70.5, -5.75]]]]}, "2012-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.5, -5.75], [-70.25, -5.85], [-70.0, -5.75], [-69.75, -5.85], [-69.68, -5.82], [-69.65, -5.75], [-69.75, -5.5], [-69.62, -5.2], [-69.75, -5.15], [-70.0, -5.25], [-70.53, -5.03], [-70.75, -4.5], [-70.65, -4.25], [-70.75, -4.0], [-70.53, -3.47], [-70.18, -3.32], [-70.03, -2.97], [-69.5, -2.75], [-69.25, -2.85], [-69.0, -2.75], [-68.47, -2.97], [-68.25, -3.5], [-68.35, -3.75], [-68.25, -4.0], [-68.35, -4.25], [-68.32, -4.32], [-67.97, -4.47], [-67.8, -4.88], [-67.5, -4.75], [-66.97, -4.97], [-66.75, -5.5], [-66.97, -6.03], [-67.32, -6.18], [-67.35, -6.25], [-67.25, -6.5], [-67.47, -7.03], [-67.82, -7.18], [-67.97, -7.53], [-68.32, -7.68], [-68.47, -8.03], [-69.0, -8.25], [-69.53, -8.03], [-69.68, -7.68], [-70.03, -7.53], [-70.18, -7.18], [-70.25, -7.15], [-70.32, -7.18], [-70.47, -7.53], [-71.0, -7.75], [-71.53, -7.53], [-71.75, -7.0], [-71.53, -6.47], [-71.18, -6.32], [-71.03, -5.97], [-70.5, -5.75]]]]}, "2012-12-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.5, -5.75], [-70.25, -5.85], [-70.0, -5.75], [-69.75, -5.85], [-69.68, -5.82], [-69.65, -5.75], [-69.75, -5.5], [-69.62, -5.2], [-69.75, -5.15], [-70.0, -5.25], [-70.53, -5.03], [-70.75, -4.5], [-70.65, -4.25], [-70.75, -4.0], [-70.53, -3.47], [-70.18, -3.32], [-70.03, -2.97], [-69.5, -2.75], [-69.25, -2.85], [-69.0, -2.75], [-68.47, -2.97], [-68.25, -3.5], [-68.35, -3.75], [-68.25, -4.0], [-68.35, -4.25], [-68.32, -4.32], [-67.97, -4.47], [-67.8, -4.88], [-67.5, -4.75], [-66.97, -4.97], [-66.75, -5.5], [-66.97, -6.03], [-67.32, -6.18], [-67.35, -6.25], [-67.25, -6.5], [-67.47, -7.03], [-67.82, -7.18], [-67.97, -7.53], [-68.32, -7.68], [-68.47, -8.03], [-69.0, -8.25], [-69.53, -8.03], [-69.68, -7.68], [-70.03, -7.53], [-70.18, -7.18], [-70.25, -7.15], [-70.32, -7.18], 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recorded over entire duration", "value": -2.165758042779828}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.381060132044619}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.49450517988481, 24.56931993731706, 23.890391363346964, 24.38505306510075, 24.159222438755364, 24.546005458934133]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.49450517988481, 24.56931993731706, 23.44807654651828, 23.970312892516176, 23.705562256971405, 24.241975473732282]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0443355092385218, -0.9688968672889473, -1.623490247055824, -1.2458271121793876, -1.4747427208284176, -1.16744681746509]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0443355092385218, -0.9688968672889473, -2.165758042779828, -1.4779073614309368, -1.6638687473903815, -1.3385472963297502]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3419513577213027, -1.2507041606310112, -2.0074548775130965, -1.556482705330951, -1.839497319734367, -1.5190764513000632]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3419513577213027, -1.2507041606310112, -2.7418010882542463, -1.792553744396828, -2.0978192291428703, -1.7340424892209652]}}