{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:23.202740", "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": "2020-Dec-04_to_2020-Dec-06_294.0_-27.5"}, "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": 2020120000208}, "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 04 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 06 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 54919.71303095724}, "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": -27.5}, "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": 294.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "294.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 295.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -28.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -27.0], [-68.53, -26.47], [-68.0, -26.25], [-67.75, -26.35], [-67.68, -26.32], [-67.53, -25.97], [-67.0, -25.75], [-66.75, -25.85], [-66.5, -25.75], [-66.25, -25.85], [-66.0, -25.75], [-65.75, -25.85], [-65.5, -25.75], [-65.0, -25.96], [-64.5, -25.75], [-63.97, -25.97], [-63.75, -26.5], [-63.97, -27.03], [-64.32, -27.18], [-64.35, -27.25], [-64.25, -27.5], [-64.35, -27.75], [-64.25, -28.0], [-64.35, -28.25], [-64.25, -28.5], [-64.47, -29.03], [-65.0, -29.25], [-65.25, -29.15], [-65.5, -29.25], [-66.03, -29.03], [-66.18, -28.68], [-66.53, -28.53], [-66.75, -28.0], [-66.65, -27.75], [-66.75, -27.5], [-66.65, -27.25], [-66.68, -27.18], [-66.75, -27.15], [-66.82, -27.18], [-66.97, -27.53], [-67.32, -27.68], [-67.47, -28.03], [-67.82, -28.18], [-67.97, -28.53], [-68.5, -28.75], [-69.03, -28.53], [-69.25, -28.0], [-69.03, -27.47], [-68.68, -27.32], [-68.65, -27.25], [-68.75, -27.0]]]]}, "2020-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -27.0], [-68.53, -26.47], [-68.0, -26.25], [-67.75, -26.35], [-67.68, -26.32], [-67.53, -25.97], [-67.0, -25.75], [-66.75, -25.85], [-66.5, -25.75], [-66.25, -25.85], [-66.0, -25.75], [-65.75, -25.85], [-65.5, -25.75], [-65.0, -25.96], [-64.5, -25.75], [-63.97, -25.97], [-63.75, -26.5], [-63.97, -27.03], [-64.32, -27.18], [-64.35, -27.25], [-64.25, -27.5], [-64.35, -27.75], [-64.25, -28.0], [-64.35, -28.25], [-64.25, -28.5], [-64.47, -29.03], [-65.0, -29.25], [-65.25, -29.15], [-65.5, -29.25], [-66.03, -29.03], [-66.18, -28.68], [-66.53, -28.53], [-66.75, -28.0], [-66.65, -27.75], [-66.75, -27.5], [-66.65, -27.25], [-66.68, -27.18], [-66.75, -27.15], [-66.82, -27.18], [-66.97, -27.53], [-67.32, -27.68], [-67.47, -28.03], [-67.82, -28.18], [-67.97, -28.53], [-68.5, -28.75], [-69.03, -28.53], [-69.25, -28.0], [-69.03, -27.47], [-68.68, -27.32], [-68.65, -27.25], [-68.75, -27.0]]]]}, "2020-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -27.0], [-68.53, -26.47], [-68.0, -26.25], [-67.75, -26.35], [-67.68, -26.32], [-67.53, -25.97], [-67.0, -25.75], [-66.75, -25.85], [-66.5, -25.75], [-66.25, -25.85], [-66.0, -25.75], [-65.75, -25.85], [-65.5, -25.75], [-65.0, -25.96], [-64.5, -25.75], [-63.97, -25.97], [-63.75, -26.5], [-63.97, -27.03], [-64.32, -27.18], [-64.35, -27.25], [-64.25, -27.5], [-64.35, -27.75], [-64.25, -28.0], [-64.35, -28.25], [-64.25, -28.5], [-64.47, -29.03], [-65.0, -29.25], [-65.25, -29.15], [-65.5, -29.25], [-66.03, -29.03], [-66.18, -28.68], [-66.53, -28.53], [-66.75, -28.0], [-66.65, -27.75], [-66.75, -27.5], [-66.65, -27.25], [-66.68, -27.18], [-66.75, -27.15], [-66.82, -27.18], [-66.97, -27.53], [-67.32, -27.68], [-67.47, -28.03], [-67.82, -28.18], [-67.97, -28.53], [-68.5, -28.75], [-69.03, -28.53], [-69.25, -28.0], [-69.03, -27.47], [-68.68, -27.32], [-68.65, -27.25], [-68.75, -27.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.759613333129437}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.916713740981113}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.408130109715898, 11.058472308276578, 13.209018312990679]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.4019556803459068, -0.8442211993116189, -1.2012515415913754]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.713384091282791, -6.094796596680766, -3.941960534979782]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.262347465131654, -7.759613333129437, -4.556839695405472]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.830098000493427, -2.357358268260446, -1.549748229891471]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1084685643017456, -2.932086268434549, -1.8907989352020016]}}