{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:07.104048", "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": "2011-Dec-22_to_2011-Dec-24_292.0_-37.5"}, "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": 2011120001140}, "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 22 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 24 2011"}, "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": 73101.16347976241}, "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"]}, "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": -37.5}, "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": 292.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "292.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.25}, "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": -39.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -36.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.18, -36.82], [-69.03, -36.47], [-68.68, -36.32], [-68.53, -35.97], [-68.0, -35.75], [-67.75, -35.85], [-67.5, -35.75], [-66.97, -35.97], [-66.82, -36.32], [-66.47, -36.47], [-66.25, -37.0], [-66.35, -37.25], [-66.32, -37.32], [-65.97, -37.47], [-65.82, -37.82], [-65.75, -37.85], [-65.5, -37.75], [-64.97, -37.97], [-64.75, -38.5], [-64.97, -39.03], [-65.32, -39.18], [-65.47, -39.53], [-66.0, -39.75], [-66.25, -39.65], [-66.5, -39.75], [-66.75, -39.65], [-67.0, -39.75], [-67.25, -39.65], [-67.5, -39.75], [-67.75, -39.65], [-68.0, -39.75], [-68.53, -39.53], [-68.68, -39.18], [-69.03, -39.03], [-69.18, -38.68], [-69.25, -38.65], [-69.5, -38.75], [-70.03, -38.53], [-70.25, -38.0], [-70.03, -37.47], [-69.68, -37.32], [-69.53, -36.97], [-69.18, -36.82]]]]}, "2011-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.18, -36.82], [-69.03, -36.47], [-68.68, -36.32], [-68.53, -35.97], [-68.0, -35.75], [-67.75, -35.85], [-67.5, -35.75], [-66.97, -35.97], [-66.82, -36.32], [-66.47, -36.47], [-66.25, -37.0], [-66.35, -37.25], [-66.32, -37.32], [-65.97, -37.47], [-65.82, -37.82], [-65.75, -37.85], [-65.5, -37.75], [-64.97, -37.97], [-64.75, -38.5], [-64.97, -39.03], [-65.32, -39.18], [-65.47, -39.53], [-66.0, -39.75], [-66.25, -39.65], [-66.5, -39.75], [-66.75, -39.65], [-67.0, -39.75], [-67.25, -39.65], [-67.5, -39.75], [-67.75, -39.65], [-68.0, -39.75], [-68.53, -39.53], [-68.68, -39.18], [-69.03, -39.03], [-69.18, -38.68], [-69.25, -38.65], [-69.5, -38.75], [-70.03, -38.53], [-70.25, -38.0], [-70.03, -37.47], [-69.68, -37.32], [-69.53, -36.97], [-69.18, -36.82]]]]}, "2011-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.18, -36.82], [-69.03, -36.47], [-68.68, -36.32], [-68.53, -35.97], [-68.0, -35.75], [-67.75, -35.85], [-67.5, -35.75], [-66.97, -35.97], [-66.82, -36.32], [-66.47, -36.47], [-66.25, -37.0], [-66.35, -37.25], [-66.32, -37.32], [-65.97, -37.47], [-65.82, -37.82], [-65.75, -37.85], [-65.5, -37.75], [-64.97, -37.97], [-64.75, -38.5], [-64.97, -39.03], [-65.32, -39.18], [-65.47, -39.53], [-66.0, -39.75], [-66.25, -39.65], [-66.5, -39.75], [-66.75, -39.65], [-67.0, -39.75], [-67.25, -39.65], [-67.5, -39.75], [-67.75, -39.65], [-68.0, -39.75], [-68.53, -39.53], [-68.68, -39.18], [-69.03, -39.03], [-69.18, -38.68], [-69.25, -38.65], [-69.5, -38.75], [-70.03, -38.53], [-70.25, -38.0], [-70.03, -37.47], [-69.68, -37.32], [-69.53, -36.97], [-69.18, -36.82]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.806313215048874}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.256387325289211}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.21928972408972, 16.06284826984256, 18.335909649303403]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.867234018774013, 12.292431931148883, 15.371767060174136]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.348223047868726, -7.7330033945130845, -5.687935533485823]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.444064699343471, -8.806313215048874, -6.800061712887668]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6922985271853064, -2.401961310306332, -1.7647835110929961]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9605239257425515, -2.680984950850898, -2.1688703321712546]}}