{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:55.528846", "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-Mar-19_to_2012-Mar-26_289.5_8.5"}, "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": 2012030001144}, "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 19 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 26 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 52058.42565258306}, "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": ["Colombia", "Venezuela"]}, "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": 8.5}, "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": 289.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "289.5\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": 290.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.53, 8.03], [-72.0, 8.25], [-71.47, 8.03], [-71.32, 7.68], 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6.47], [-70.82, 6.32], [-70.97, 5.97], [-71.5, 5.75], [-71.75, 5.85], [-72.0, 5.75], [-72.53, 5.97], [-72.75, 6.5], [-72.54, 7.0], [-72.75, 7.5], [-72.53, 8.03]]]]}, "2012-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.53, 8.03], [-72.0, 8.25], [-71.75, 8.15], [-71.68, 8.18], [-71.53, 8.53], [-71.18, 8.68], [-71.03, 9.03], [-70.68, 9.18], [-70.53, 9.53], [-70.0, 9.75], [-69.75, 9.65], [-69.5, 9.75], [-68.97, 9.53], [-68.75, 9.0], [-68.85, 8.75], [-68.75, 8.5], [-68.85, 8.25], [-68.75, 8.0], [-68.97, 7.47], [-69.5, 7.25], [-69.75, 7.35], [-69.82, 7.32], [-69.97, 6.97], [-70.32, 6.82], [-70.47, 6.47], [-70.82, 6.32], [-70.97, 5.97], [-71.5, 5.75], [-71.75, 5.85], [-72.0, 5.75], [-72.53, 5.97], [-72.75, 6.5], [-72.54, 7.0], [-72.75, 7.5], [-72.53, 8.03]]]]}, "2012-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-72.53, 8.03], [-72.0, 8.25], [-71.75, 8.15], [-71.68, 8.18], [-71.53, 8.53], [-71.18, 8.68], [-71.03, 9.03], [-70.68, 9.18], 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[-69.82, 8.32], [-69.97, 7.97], [-70.5, 7.75], [-71.03, 7.97], [-71.25, 8.5], [-71.03, 9.03], [-70.68, 9.18], [-70.53, 9.53], [-70.0, 9.75]]]]}, "2012-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.0, 9.75], [-69.47, 9.53], [-69.25, 9.0], [-69.47, 8.47], [-69.82, 8.32], [-69.97, 7.97], [-70.5, 7.75], [-71.03, 7.97], [-71.25, 8.5], [-71.03, 9.03], [-70.68, 9.18], [-70.53, 9.53], [-70.0, 9.75]]]]}, "2012-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.5, 9.25], [-69.97, 9.03], [-69.75, 8.5], [-69.97, 7.97], [-70.5, 7.75], [-71.03, 7.97], [-71.25, 8.5], [-71.03, 9.03], [-70.5, 9.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.911809817499716}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.713244654030081}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.443203019787575, 24.50331312752934, 24.599519882897084, 24.625469937179844, 26.21498592352208, 24.45636938484313, 24.013028040375048, 24.151681731604526]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.441034924394785, 15.385833280879297, 15.52193148016903, 15.171171957964816, 24.246453975530642, 23.9508200651631, 23.54310957973661, 24.151681731604526]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3405133980358084, -2.9054435973868737, -2.824544907314626, -2.8095245473081754, -2.623962921301029, -2.0214922272702154, -2.4733246114078895, -1.84918022994475]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.8212905522772758, -3.8255954434124533, -3.578410719587737, -3.911809817499716, 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