{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:49.581291", "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-21_to_2012-Nov-25_293.5_-43.5"}, "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": 2012110000778}, "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 21 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": 5}, "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": 165902.8814044582}, "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", "Chile"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": -43.5}, "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": 293.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "293.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 294.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.53, -44.53], [-72.75, -44.0], [-72.53, -43.47], [-72.0, -43.25], [-71.75, -43.35], [-71.5, -43.25], [-71.25, -43.35], [-71.0, -43.25], [-70.47, -43.47], [-70.25, -44.0], [-70.47, -44.53], [-71.0, -44.75], [-71.25, -44.65], [-71.5, -44.75], [-71.75, -44.65], [-72.0, -44.75], [-72.53, -44.53]]]]}, "2012-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.53, -44.53], [-72.75, -44.0], [-72.53, -43.47], [-72.0, -43.25], [-71.75, -43.35], [-71.5, -43.25], [-71.25, -43.35], [-71.18, -43.32], [-71.15, -43.25], [-71.25, -43.0], [-71.15, -42.75], [-71.25, -42.5], [-71.15, -42.25], [-71.25, -42.0], [-71.15, -41.75], [-71.25, -41.5], [-71.03, -40.97], [-70.5, -40.75], [-70.25, -40.85], [-70.0, -40.75], [-69.75, -40.85], [-69.68, -40.82], [-69.53, -40.47], [-69.0, -40.25], [-68.47, -40.47], [-68.32, -40.82], [-67.97, -40.97], [-67.82, -41.32], [-67.75, -41.35], [-67.5, -41.25], [-67.25, -41.35], [-67.0, -41.25], [-66.47, -41.47], [-66.32, -41.82], [-65.97, -41.97], [-65.75, -42.5], [-65.85, -42.75], [-65.75, -43.0], [-65.85, 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[-72.53, -44.53]]]]}, "2012-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-71.15, -43.25], [-71.25, -43.0], [-71.15, -42.75], [-71.25, -42.5], [-71.15, -42.25], [-71.25, -42.0], [-71.15, -41.75], [-71.25, -41.5], [-71.03, -40.97], [-70.5, -40.75], [-70.25, -40.85], [-70.0, -40.75], [-69.75, -40.85], [-69.68, -40.82], [-69.53, -40.47], [-69.0, -40.25], [-68.47, -40.47], [-68.32, -40.82], [-67.97, -40.97], [-67.82, -41.32], [-67.75, -41.35], [-67.5, -41.25], [-67.25, -41.35], [-67.0, -41.25], [-66.47, -41.47], [-66.32, -41.82], [-65.97, -41.97], [-65.75, -42.5], [-65.85, -42.75], [-65.75, -43.0], [-65.85, -43.25], [-65.75, -43.5], [-65.85, -43.75], [-65.82, -43.82], [-65.47, -43.97], [-65.25, -44.5], [-65.47, -45.03], [-66.0, -45.25], [-66.5, -45.04], [-66.82, -45.18], [-66.85, -45.25], [-66.75, -45.5], [-66.97, -46.03], [-67.32, -46.18], [-67.47, -46.53], [-68.0, -46.75], [-68.53, -46.53], [-68.68, -46.18], [-68.75, -46.15], [-69.0, -46.25], [-69.25, -46.15], [-69.5, -46.25], [-69.75, -46.15], [-70.0, -46.25], [-70.53, -46.03], [-70.75, -45.5], [-70.65, -45.25], [-70.75, -45.0], [-70.65, -44.75], [-70.68, -44.68], [-71.03, -44.53], [-71.25, -44.0], [-71.15, -43.75], [-71.25, -43.5], [-71.15, -43.25]]]]}, "2012-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.03, -41.97], [-66.5, -41.75], [-65.97, -41.97], [-65.75, -42.5], [-65.96, -43.0], [-65.75, -43.5], [-65.87, -43.8], [-65.47, -43.97], [-65.25, -44.5], [-65.47, -45.03], [-66.0, -45.25], [-66.53, -45.03], [-66.75, -44.5], [-66.62, -44.2], [-67.03, -44.03], [-67.25, -43.5], [-67.04, -43.0], [-67.25, -42.5], [-67.03, -41.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.520385896339121}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.683140300900632}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.7876314710990187, 9.59508678836238, 10.316930562422385, 10.497617217817492, 14.274262298200142]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.7690029093276394, 1.8658025916120664, 2.8447670437572015, 5.496380555487292, 12.720408777534601]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.5424876334976525, -5.100083777123838, -4.43446888778401, -4.5963235819513235, -3.8667255855494695]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.63159137857474, -6.28876802841836, -5.13493233341859, -6.520385896339121, -4.0725191392683655]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2573798823294797, -1.5914850521193709, -1.4155782159445984, -1.5312138052259763, -1.264904838443717]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3098258490403187, -1.839582960133511, -1.6817220805849868, -2.110332040338541, -1.3008303042612241]}}