{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:29.019330", "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": "2019-Sep-14_to_2019-Sep-16_295.0_-63.0"}, "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": 2019090000461}, "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": "September 14 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 16 2019"}, "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": 70501.80311832922}, "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": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean", "W.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": ["Southern 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": -63.0}, "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": 295.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "295.0\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": -65.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -61.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-09-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, -63.47], [-68.68, -63.32], [-68.53, -62.97], 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-64.5], [-69.15, -64.25], [-69.25, -64.0], [-69.03, -63.47]]]]}, "2019-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, -63.47], [-68.68, -63.32], [-68.53, -62.97], [-68.18, -62.82], [-68.03, -62.47], [-67.68, -62.32], [-67.53, -61.97], [-67.0, -61.75], [-66.75, -61.85], [-66.5, -61.75], [-66.25, -61.85], [-66.0, -61.75], [-65.75, -61.85], [-65.5, -61.75], [-65.25, -61.85], [-65.0, -61.75], [-64.75, -61.85], [-64.68, -61.82], [-64.53, -61.47], [-64.0, -61.25], [-63.75, -61.35], [-63.5, -61.25], [-63.25, -61.35], [-63.0, -61.25], [-62.47, -61.47], [-62.32, -61.82], [-61.97, -61.97], [-61.75, -62.5], [-61.85, -62.75], [-61.75, -63.0], [-61.97, -63.53], [-62.5, -63.75], [-62.75, -63.65], [-63.0, -63.75], [-63.25, -63.65], [-63.32, -63.68], [-63.47, -64.03], [-64.0, -64.25], [-64.25, -64.15], [-64.32, -64.18], [-64.47, -64.53], [-65.0, -64.75], [-65.25, -64.65], [-65.32, -64.68], [-65.47, -65.03], [-66.0, -65.25], [-66.25, -65.15], [-66.32, -65.18], [-66.47, -65.53], [-67.0, -65.75], [-67.25, -65.65], [-67.5, -65.75], [-67.75, -65.65], [-67.82, -65.68], [-67.97, -66.03], [-68.5, -66.25], [-69.03, -66.03], [-69.25, -65.5], [-69.04, -65.0], [-69.25, -64.5], [-69.15, -64.25], [-69.25, -64.0], [-69.03, -63.47]]]]}, "2019-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, -63.47], [-68.68, -63.32], [-68.53, -62.97], [-68.18, -62.82], [-68.03, -62.47], [-67.68, -62.32], [-67.53, -61.97], [-67.0, -61.75], [-66.75, -61.85], [-66.5, -61.75], [-66.25, -61.85], [-66.0, -61.75], [-65.75, -61.85], [-65.5, -61.75], [-65.25, -61.85], [-65.0, -61.75], [-64.75, -61.85], [-64.68, -61.82], [-64.53, -61.47], [-64.0, -61.25], [-63.75, -61.35], [-63.5, -61.25], [-63.25, -61.35], [-63.0, -61.25], [-62.47, -61.47], [-62.32, -61.82], [-61.97, -61.97], [-61.75, -62.5], [-61.85, -62.75], [-61.75, -63.0], [-61.97, -63.53], [-62.5, -63.75], [-62.75, -63.65], [-63.0, -63.75], [-63.25, -63.65], [-63.32, -63.68], [-63.47, -64.03], [-64.0, 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of maximum t2m.", "value": [-15.67091187138368, -16.46772159331573, -16.26851916283266]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.804303265288041, -9.009682299407928, -8.792693789721744]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.516189700825294, -10.567558123078925, -10.722150469194162]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1737224429757127, -2.293142844645519, -2.271627556821154]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5663245325910156, -2.630903288968773, -2.703911028779957]}}