{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:49.690844", "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-Nov-22_to_2012-Nov-25_291.0_-38.0"}, "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": 2012110000808}, "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": "November 22 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 25 2012"}, "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": 136250.23267078053}, "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", "S.W.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": -38.0}, "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": 291.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 289.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 294.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -40.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.75, -39.0], [-70.65, -38.75], [-70.68, -38.68], 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-39.47], [-70.68, -39.32], [-70.65, -39.25], [-70.75, -39.0]]]]}, "2012-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.75, -39.0], [-70.65, -38.75], [-70.68, -38.68], [-71.03, -38.53], [-71.25, -38.0], [-71.03, -37.47], [-70.5, -37.25], [-70.25, -37.35], [-70.18, -37.32], [-70.15, -37.25], [-70.25, -37.0], [-70.03, -36.47], [-69.68, -36.32], [-69.65, -36.25], [-69.75, -36.0], [-69.53, -35.47], [-69.0, -35.25], [-68.75, -35.35], [-68.5, -35.25], [-67.97, -35.47], [-67.82, -35.82], [-67.47, -35.97], [-67.32, -36.32], [-67.25, -36.35], [-67.0, -36.25], [-66.5, -36.46], [-66.0, -36.25], [-65.75, -36.35], [-65.5, -36.25], [-64.97, -36.47], [-64.75, -37.0], [-64.85, -37.25], [-64.75, -37.5], [-64.85, -37.75], [-64.75, -38.0], [-64.97, -38.53], [-65.5, -38.75], [-65.75, -38.65], [-65.82, -38.68], [-65.97, -39.03], [-66.32, -39.18], [-66.47, -39.53], [-67.0, -39.75], [-67.25, -39.65], [-67.5, -39.75], [-67.75, -39.65], [-67.82, -39.68], [-67.97, -40.03], [-68.32, -40.18], [-68.47, -40.53], [-69.0, -40.75], [-69.25, -40.65], [-69.5, -40.75], [-69.75, -40.65], [-70.0, -40.75], [-70.25, -40.65], [-70.5, -40.75], [-71.03, -40.53], [-71.25, -40.0], [-71.03, -39.47], [-70.68, -39.32], [-70.65, -39.25], [-70.75, -39.0]]]]}, "2012-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.75, -39.0], [-70.65, -38.75], [-70.68, -38.68], [-71.03, -38.53], [-71.25, -38.0], [-71.03, -37.47], [-70.5, -37.25], [-70.25, -37.35], [-70.18, -37.32], [-70.15, -37.25], [-70.25, -37.0], [-70.03, -36.47], [-69.68, -36.32], [-69.65, -36.25], [-69.75, -36.0], [-69.53, -35.47], [-69.0, -35.25], [-68.75, -35.35], [-68.5, -35.25], [-67.97, -35.47], [-67.82, -35.82], [-67.47, -35.97], [-67.32, -36.32], [-67.25, -36.35], [-67.0, -36.25], [-66.5, -36.46], [-66.0, -36.25], [-65.75, -36.35], [-65.5, -36.25], [-64.97, -36.47], [-64.75, -37.0], [-64.85, -37.25], [-64.75, -37.5], [-64.85, -37.75], [-64.75, -38.0], [-64.97, -38.53], [-65.5, -38.75], [-65.75, 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"Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.333149457680861, 14.233426038854361, 14.279438576957773, 16.86185347642089]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.24643366583166, 8.128052684648992, 9.163889435106114, 16.86185347642089]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.725543385351831, -4.716334401389636, -4.6508896963677895, -3.80637315916465]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.431256101657993, -6.026198960010618, -6.1749645315503585, -3.80637315916465]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8772241564017385, 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