{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:17.774954", "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": "2018-Oct-31_to_2018-Nov-02_294.0_-41.0"}, "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": 2018100000916}, "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": "October 31 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 02 2018"}, "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": 100323.05114890482}, "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.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": ["South Atlantic Ocean"]}, "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": -41.0}, "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": 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": 297.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -39.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.12, -40.3], [-68.25, -40.0], [-68.03, -39.47], [-67.5, -39.25], [-67.25, -39.35], [-67.0, -39.25], [-66.75, -39.35], [-66.5, -39.25], [-65.97, -39.47], [-65.82, -39.82], [-65.75, -39.85], [-65.5, -39.75], [-65.25, -39.85], [-65.18, -39.82], [-65.03, -39.47], [-64.5, -39.25], [-64.25, -39.35], [-64.0, -39.25], [-63.75, -39.35], [-63.5, -39.25], [-63.0, -39.46], [-62.5, -39.25], [-61.97, -39.47], [-61.75, -40.0], [-61.85, -40.25], [-61.75, -40.5], [-61.85, -40.75], [-61.75, -41.0], [-61.97, -41.53], [-62.5, -41.75], [-62.75, -41.65], [-63.0, -41.75], [-63.25, -41.65], [-63.32, -41.68], [-63.47, -42.03], [-64.0, -42.25], [-64.25, -42.15], [-64.32, -42.18], [-64.35, -42.25], [-64.25, -42.5], [-64.35, -42.75], [-64.25, -43.0], [-64.47, -43.53], [-65.0, -43.75], [-65.53, -43.53], [-65.68, -43.18], [-66.03, -43.03], [-66.25, -42.5], [-66.15, -42.25], [-66.18, -42.18], [-66.5, -42.04], [-67.0, -42.25], [-67.25, -42.15], [-67.5, -42.25], [-67.75, -42.15], [-68.0, -42.25], [-68.25, -42.15], [-68.5, -42.25], [-69.03, -42.03], [-69.25, -41.5], [-69.03, -40.97], [-68.68, -40.82], [-68.53, -40.47], [-68.12, -40.3]]]]}, "2018-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.12, -40.3], [-68.25, -40.0], [-68.03, -39.47], [-67.5, -39.25], [-67.25, -39.35], [-67.0, -39.25], [-66.75, -39.35], [-66.5, -39.25], [-65.97, -39.47], [-65.82, -39.82], [-65.75, -39.85], [-65.5, -39.75], [-65.25, -39.85], [-65.18, -39.82], [-65.03, -39.47], [-64.5, -39.25], [-64.25, -39.35], [-64.0, -39.25], [-63.75, -39.35], [-63.5, -39.25], [-63.0, -39.46], [-62.5, -39.25], [-61.97, -39.47], [-61.75, -40.0], [-61.85, -40.25], [-61.75, -40.5], [-61.85, -40.75], [-61.75, -41.0], [-61.97, -41.53], [-62.5, -41.75], [-62.75, -41.65], [-63.0, -41.75], [-63.25, -41.65], [-63.32, -41.68], [-63.47, -42.03], [-64.0, -42.25], [-64.25, -42.15], [-64.32, -42.18], [-64.35, -42.25], [-64.25, -42.5], [-64.35, -42.75], [-64.25, -43.0], [-64.47, -43.53], [-65.0, -43.75], [-65.53, -43.53], [-65.68, -43.18], [-66.03, -43.03], [-66.25, -42.5], [-66.15, -42.25], [-66.18, -42.18], [-66.5, -42.04], [-67.0, -42.25], [-67.25, -42.15], [-67.5, -42.25], [-67.75, -42.15], [-68.0, -42.25], [-68.25, -42.15], [-68.5, -42.25], [-69.03, -42.03], [-69.25, -41.5], [-69.03, -40.97], [-68.68, -40.82], [-68.53, -40.47], [-68.12, -40.3]]]]}, "2018-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.12, -40.3], [-68.25, -40.0], [-68.03, -39.47], [-67.5, -39.25], [-67.25, -39.35], [-67.0, -39.25], [-66.75, -39.35], [-66.5, -39.25], [-65.97, -39.47], [-65.82, -39.82], [-65.75, -39.85], [-65.5, -39.75], [-65.25, -39.85], [-65.18, -39.82], [-65.03, -39.47], [-64.5, -39.25], [-64.25, -39.35], [-64.0, -39.25], [-63.75, -39.35], [-63.5, -39.25], [-63.0, -39.46], [-62.5, -39.25], [-61.97, -39.47], [-61.75, -40.0], [-61.85, -40.25], [-61.75, -40.5], [-61.85, -40.75], [-61.75, -41.0], [-61.97, -41.53], [-62.5, -41.75], [-62.75, -41.65], [-63.0, -41.75], [-63.25, -41.65], [-63.32, -41.68], [-63.47, -42.03], [-64.0, -42.25], [-64.25, -42.15], [-64.32, -42.18], [-64.35, -42.25], [-64.25, -42.5], [-64.35, -42.75], [-64.25, -43.0], [-64.47, -43.53], [-65.0, -43.75], [-65.53, -43.53], [-65.68, -43.18], [-66.03, -43.03], [-66.25, -42.5], [-66.15, -42.25], [-66.18, -42.18], [-66.5, -42.04], [-67.0, -42.25], [-67.25, -42.15], [-67.5, -42.25], [-67.75, -42.15], [-68.0, -42.25], [-68.25, -42.15], [-68.5, -42.25], [-69.03, -42.03], [-69.25, -41.5], [-69.03, -40.97], [-68.68, -40.82], [-68.53, -40.47], [-68.12, -40.3]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.67433358994873}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.4120305430884335}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.343811050722763, 8.602047486766253, 11.277575344854654]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.754385970870601, 2.3778897475057192, 5.775468631630929]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.961811527520709, -6.853747726575507, -4.420532375169092]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.076563214343139, -8.67433358994873, -5.210272468213645]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6149623471265804, -2.2086319997825443, -1.4369071882033764]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9176187209117013, -2.6320068911834014, -1.6186708183494583]}}