{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:50.838986", "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": "2013-Mar-26_to_2013-Mar-29_305.0_-21.5"}, "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": 2013030000818}, "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": "March 26 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 29 2013"}, "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": 88466.49104394417}, "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", "Paraguay"]}, "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": -21.5}, "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": 305.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.5, -20.25], [-53.97, -20.47], [-53.82, -20.82], [-53.5, 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[-56.65, -22.25]]]]}, "2013-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.75, -23.5], [-53.53, -22.97], [-53.0, -22.75], [-52.75, -22.85], [-52.68, -22.82], [-52.65, -22.75], [-52.75, -22.5], [-52.53, -21.97], [-52.0, -21.75], [-51.47, -21.97], [-51.25, -22.5], [-51.35, -22.75], [-51.25, -23.0], [-51.35, -23.25], [-51.32, -23.32], [-50.97, -23.47], [-50.75, -24.0], [-50.97, -24.53], [-51.5, -24.75], [-51.75, -24.65], [-52.0, -24.75], [-52.3, -24.62], [-52.47, -25.03], [-53.0, -25.25], [-53.53, -25.03], [-53.75, -24.5], [-53.65, -24.25], [-53.75, -24.0], [-53.65, -23.75], [-53.75, -23.5]]], [[[-56.75, -22.0], [-56.53, -21.47], [-56.18, -21.32], [-56.03, -20.97], [-55.5, -20.75], [-55.25, -20.85], [-55.18, -20.82], [-55.03, -20.47], [-54.5, -20.25], [-53.97, -20.47], [-53.75, -21.0], [-53.97, -21.53], [-54.32, -21.68], [-54.35, -21.75], [-54.25, -22.0], [-54.47, -22.53], [-54.82, -22.68], [-54.85, -22.75], [-54.82, -22.82], [-54.47, -22.97], [-54.25, -23.5], [-54.47, -24.03], [-55.0, -24.25], [-55.53, -24.03], [-55.68, -23.68], [-55.75, -23.65], [-56.0, -23.75], [-56.53, -23.53], [-56.75, -23.0], [-56.65, -22.75], [-56.75, -22.5], [-56.65, -22.25], [-56.75, -22.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.839080712135683}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7902308456980727}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.017874056352298, 22.099012826134242, 20.96998344208589, 21.66551591240534]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.00353854256423, 20.293511915294005, 19.186491446572006, 20.737517213507317]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.131338340017269, -2.47845065060621, -3.6078331691704304, -2.5333205512529475]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4864272715537368, -3.2305626765821103, -4.839080712135683, -3.259959345818345]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3620239153319582, -1.428251007586072, -1.9805392454726518, -1.327470517228322]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5870873554646212, -1.6877215358470508, -2.4087846502123926, -1.654851223936202]}}