{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:19.584571", "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": "2025-Jan-31_to_2025-Feb-11_147.0_-20.0"}, "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": 2025010000810}, "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": "January 31 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 11 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 12}, "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": 377494.0995390233}, "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": ["Australia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia", "E.Australia", "N.Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Australia"]}, "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": ["Coral Sea"]}, "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": -20.0}, "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": 147.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "147.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 142.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 150.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.25, -18.5], [144.47, -17.97], [145.0, -17.75], [145.53, -17.97], [145.68, -18.32], [146.03, -18.47], [146.18, -18.82], [146.25, -18.85], [146.5, -18.75], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.68, -19.32], [148.03, -19.47], [148.18, -19.82], [148.53, -19.97], [148.75, -20.5], [148.65, -20.75], [148.75, -21.0], [148.53, -21.53], [148.0, -21.75], [147.75, -21.65], [147.5, -21.75], [146.97, -21.53], [146.82, -21.18], [146.75, -21.15], [146.5, -21.25], [145.97, -21.03], [145.82, -20.68], [145.47, -20.53], [145.32, -20.18], [144.97, -20.03], [144.75, -19.5], [144.85, -19.25], [144.82, -19.18], [144.47, -19.03], [144.25, -18.5]]]]}, "2025-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.25, -19.5], [143.47, -18.97], [143.82, -18.82], [143.97, -18.47], [144.32, -18.32], [144.47, -17.97], [145.0, -17.75], [145.53, -17.97], [145.68, -18.32], [145.75, -18.35], [146.0, -18.25], [146.53, -18.47], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.68, -19.32], [148.03, -19.47], [148.18, -19.82], [148.53, -19.97], [148.75, -20.5], [148.65, -20.75], [148.75, -21.0], [148.65, -21.25], [148.68, -21.32], [149.03, -21.47], [149.18, -21.82], [149.53, -21.97], [149.75, -22.5], [149.53, -23.03], [149.0, -23.25], [148.75, -23.15], [148.5, -23.25], [148.25, -23.15], [148.0, -23.25], [147.75, -23.15], [147.5, -23.25], [147.25, -23.15], [147.0, -23.25], [146.47, -23.03], [146.32, -22.68], [145.97, -22.53], [145.82, -22.18], [145.75, -22.15], [145.5, -22.25], [144.97, -22.03], [144.82, -21.68], [144.47, -21.53], [144.32, -21.18], [143.97, -21.03], [143.75, -20.5], [143.85, -20.25], [143.82, -20.18], [143.47, -20.03], [143.25, -19.5]]]]}, "2025-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.25, -19.5], [143.47, -18.97], [143.82, -18.82], [143.97, -18.47], [144.32, -18.32], [144.47, -17.97], [145.0, -17.75], [145.53, -17.97], [145.68, -18.32], [145.75, -18.35], [146.0, -18.25], [146.53, -18.47], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.68, -19.32], [148.03, -19.47], [148.18, -19.82], [148.53, -19.97], [148.75, -20.5], [148.65, -20.75], [148.75, -21.0], [148.65, -21.25], [148.68, -21.32], [149.03, -21.47], [149.18, -21.82], [149.53, -21.97], [149.75, -22.5], [149.53, -23.03], [149.18, -23.18], [149.03, -23.53], [148.68, -23.68], [148.53, -24.03], [148.0, -24.25], [147.75, -24.15], [147.5, -24.25], [147.25, -24.15], [147.0, -24.25], [146.75, -24.15], [146.5, -24.25], [146.25, -24.15], [146.0, -24.25], [145.75, -24.15], [145.5, -24.25], [144.97, -24.03], [144.82, -23.68], [144.75, -23.65], [144.5, -23.75], [143.97, -23.53], [143.75, -23.0], [143.96, -22.5], [143.75, -22.0], [143.97, -21.47], [144.38, -21.3], [144.32, -21.18], [143.97, -21.03], [143.75, -20.5], [143.85, -20.25], [143.82, -20.18], [143.47, -20.03], [143.25, -19.5]]]]}, "2025-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -24.97], [142.32, -24.82], [142.35, -24.75], [142.25, -24.5], [142.47, -23.97], [142.82, -23.82], [142.97, -23.47], [143.32, -23.32], [143.47, -22.97], [143.82, -22.82], [143.96, -22.5], [143.75, -22.0], [143.97, -21.47], [144.38, -21.3], [144.32, -21.18], [143.97, -21.03], [143.75, -20.5], [143.85, -20.25], [143.82, -20.18], [143.47, -20.03], [143.25, -19.5], [143.47, -18.97], [143.82, -18.82], [143.97, -18.47], [144.5, -18.25], [144.75, -18.35], [145.0, -18.25], [145.25, -18.35], [145.5, -18.25], [145.75, -18.35], [146.0, -18.25], [146.53, -18.47], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.68, -19.32], [148.03, -19.47], [148.18, -19.82], [148.53, -19.97], [148.75, -20.5], [148.65, -20.75], [148.75, -21.0], [148.65, -21.25], [148.68, -21.32], [149.03, -21.47], [149.18, -21.82], [149.53, -21.97], [149.75, -22.5], [149.53, -23.03], [149.18, -23.18], [149.15, -23.25], [149.25, -23.5], [149.03, -24.03], [148.5, -24.25], [148.25, -24.15], [148.0, -24.25], [147.75, -24.15], [147.5, -24.25], [147.25, -24.15], [147.18, -24.18], [147.03, -24.53], [146.5, -24.75], [146.25, -24.65], [146.0, -24.75], [145.75, -24.65], [145.68, -24.68], [145.53, -25.03], [145.0, -25.25], [144.75, -25.15], [144.5, -25.25], [144.25, -25.15], [144.18, -25.18], [144.15, -25.25], [144.25, -25.5], [144.03, -26.03], [143.68, -26.18], [143.53, -26.53], [143.0, -26.75], [142.75, -26.65], [142.5, -26.75], [141.97, -26.53], [141.75, -26.0], [141.85, -25.75], [141.75, -25.5], [141.97, -24.97]]]]}, "2025-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -24.97], [142.32, -24.82], [142.35, -24.75], [142.25, -24.5], [142.47, -23.97], [142.82, -23.82], [142.97, -23.47], [143.32, -23.32], [143.47, -22.97], [143.82, -22.82], [143.96, -22.5], [143.75, -22.0], [143.97, -21.47], [144.38, -21.3], [144.25, -21.0], [144.35, -20.75], [144.25, -20.5], [144.47, -19.97], [144.82, -19.82], [144.85, -19.75], [144.75, -19.5], [144.97, -18.97], [145.5, -18.75], [145.75, -18.85], [146.0, -18.75], [146.25, -18.85], [146.5, -18.75], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.68, -19.32], [148.03, -19.47], [148.18, -19.82], [148.53, -19.97], [148.75, -20.5], [148.65, -20.75], [148.75, -21.0], [148.65, -21.25], [148.68, -21.32], [149.03, -21.47], [149.18, -21.82], [149.53, -21.97], [149.75, -22.5], [149.65, -22.75], [149.75, -23.0], [149.65, -23.25], [149.75, -23.5], [149.65, -23.75], [149.75, -24.0], [149.65, -24.25], [149.75, -24.5], [149.53, -25.03], [149.18, -25.18], [149.03, -25.53], [148.5, -25.75], [147.97, -25.53], [147.82, -25.18], [147.75, -25.15], [147.5, -25.25], [147.25, -25.15], [147.0, -25.25], [146.47, -25.03], [146.32, -24.68], [146.25, -24.65], [146.0, -24.75], [145.75, -24.65], [145.68, -24.68], [145.53, -25.03], [145.0, -25.25], [144.75, -25.15], [144.5, -25.25], [144.25, -25.15], [144.18, -25.18], [144.15, -25.25], [144.25, -25.5], [144.03, -26.03], [143.68, -26.18], [143.53, -26.53], [143.0, -26.75], [142.75, -26.65], [142.5, -26.75], [141.97, -26.53], [141.75, -26.0], [141.85, -25.75], [141.75, -25.5], [141.97, -24.97]]]]}, "2025-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -24.97], [142.32, -24.82], [142.35, -24.75], [142.25, -24.5], [142.47, -23.97], [142.82, -23.82], [142.97, -23.47], [143.32, -23.32], [143.47, -22.97], [143.82, -22.82], [143.85, -22.75], [143.75, -22.5], [143.97, -21.97], [144.32, -21.82], [144.47, -21.47], [145.0, -21.25], [145.25, -21.35], [145.5, -21.25], [145.75, -21.35], [145.82, -21.32], [145.85, -21.25], [145.75, -21.0], [145.97, -20.47], [146.32, -20.32], [146.47, -19.97], [147.0, -19.75], [147.25, -19.85], [147.5, -19.75], [147.75, -19.85], [148.0, -19.75], [148.25, -19.85], [148.5, -19.75], [149.03, -19.97], [149.18, -20.32], [149.53, -20.47], [149.68, -20.82], [150.03, -20.97], [150.25, -21.5], [150.15, -21.75], [150.18, -21.82], [150.53, -21.97], [150.75, -22.5], [150.65, -22.75], [150.75, -23.0], [150.65, -23.25], [150.75, -23.5], [150.53, -24.03], [150.0, -24.25], [149.75, -24.15], [149.68, -24.18], [149.65, -24.25], [149.75, -24.5], [149.53, -25.03], [149.18, -25.18], [149.03, -25.53], [148.5, -25.75], [147.97, -25.53], [147.82, -25.18], [147.75, -25.15], [147.5, -25.25], [147.25, -25.15], [147.0, -25.25], [146.47, -25.03], [146.32, -24.68], [146.25, -24.65], [146.0, -24.75], [145.75, -24.65], [145.68, -24.68], [145.53, -25.03], [145.0, -25.25], [144.75, -25.15], [144.5, -25.25], [144.25, -25.15], [144.18, -25.18], [144.15, -25.25], [144.25, -25.5], [144.03, -26.03], [143.68, -26.18], [143.53, -26.53], [143.0, -26.75], [142.75, -26.65], [142.5, -26.75], [141.97, -26.53], [141.75, -26.0], [141.85, -25.75], [141.75, -25.5], [141.97, -24.97]]]]}, "2025-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.97, -20.47], [143.5, -20.25], [143.75, -20.35], [144.0, -20.25], [144.53, -20.47], [144.68, -20.82], [144.75, -20.85], [145.0, -20.75], [145.25, -20.85], [145.32, -20.82], [145.47, -20.47], [145.82, -20.32], [145.97, -19.97], [146.32, -19.82], [146.47, -19.47], [147.0, -19.25], [147.25, -19.35], [147.5, -19.25], [147.75, -19.35], [148.0, -19.25], [148.53, -19.47], [148.68, -19.82], [149.03, -19.97], [149.18, -20.32], [149.53, -20.47], [149.68, -20.82], [150.03, -20.97], [150.25, -21.5], [150.15, -21.75], [150.18, -21.82], [150.53, -21.97], [150.75, -22.5], [150.65, -22.75], [150.75, -23.0], [150.65, -23.25], [150.75, -23.5], [150.53, -24.03], [150.0, -24.25], [149.75, -24.15], [149.68, -24.18], [149.65, -24.25], [149.75, -24.5], [149.53, -25.03], [149.18, -25.18], [149.03, -25.53], [148.5, -25.75], [147.97, -25.53], [147.82, -25.18], [147.75, -25.15], [147.5, -25.25], [147.25, -25.15], [147.0, -25.25], [146.47, -25.03], [146.32, -24.68], [145.97, -24.53], [145.82, -24.18], [145.75, -24.15], [145.5, -24.25], [145.25, -24.15], [145.0, -24.25], [144.47, -24.03], [144.32, -23.68], [143.97, -23.53], [143.75, -23.0], [143.85, -22.75], [143.75, -22.5], [143.85, -22.25], [143.82, -22.18], [143.75, -22.15], [143.5, -22.25], [142.97, -22.03], [142.75, -21.5], [142.85, -21.25], [142.75, -21.0], [142.97, -20.47]]]]}, "2025-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.97, -20.47], [143.5, -20.25], [143.75, -20.35], [144.0, -20.25], [144.53, -20.47], [144.68, -20.82], [144.75, -20.85], [145.0, -20.75], [145.25, -20.85], [145.32, -20.82], [145.46, -20.5], [145.25, -20.0], [145.47, -19.47], [145.82, -19.32], [145.97, -18.97], [146.5, -18.75], [146.75, -18.85], [147.0, -18.75], [147.25, -18.85], [147.5, -18.75], [148.03, -18.97], [148.18, -19.32], [148.53, -19.47], [148.68, -19.82], [149.03, -19.97], [149.18, -20.32], [149.53, -20.47], [149.68, -20.82], [150.03, -20.97], [150.25, -21.5], [150.15, -21.75], [150.18, -21.82], [150.53, -21.97], [150.75, -22.5], [150.65, -22.75], [150.75, -23.0], [150.65, -23.25], [150.75, -23.5], [150.53, -24.03], [150.0, -24.25], [149.75, -24.15], [149.5, -24.25], [149.25, -24.15], [149.18, -24.18], [149.03, -24.53], [148.5, -24.75], [148.25, -24.65], [148.0, -24.75], [147.75, -24.65], [147.5, -24.75], [147.25, -24.65], [147.0, -24.75], [146.75, -24.65], [146.5, -24.75], [145.97, -24.53], [145.82, -24.18], [145.75, -24.15], [145.5, -24.25], [145.25, -24.15], [145.0, -24.25], [144.47, -24.03], [144.32, -23.68], [143.97, -23.53], [143.75, -23.0], [143.85, -22.75], [143.75, -22.5], [143.85, -22.25], [143.82, -22.18], [143.75, -22.15], [143.5, -22.25], [142.97, -22.03], [142.75, -21.5], [142.85, -21.25], [142.75, -21.0], [142.97, -20.47]]]]}, "2025-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.97, -20.47], [143.5, -20.25], [143.75, -20.35], [144.0, -20.25], [144.53, -20.47], [144.68, -20.82], [144.75, -20.85], [145.0, -20.75], [145.25, -20.85], [145.32, -20.82], [145.46, -20.5], [145.25, -20.0], [145.35, -19.75], [145.25, -19.5], [145.47, -18.97], [146.0, -18.75], [146.25, -18.85], [146.5, -18.75], [146.75, -18.85], [147.0, -18.75], [147.25, -18.85], [147.5, -18.75], [148.03, -18.97], [148.18, -19.32], [148.53, -19.47], [148.68, -19.82], [149.03, -19.97], [149.25, -20.5], [149.15, -20.75], [149.18, -20.82], [149.53, -20.97], [149.75, -21.5], [149.53, -22.03], [149.0, -22.25], [148.75, -22.15], [148.68, -22.18], [148.53, -22.53], [148.0, -22.75], [147.75, -22.65], [147.68, -22.68], [147.53, -23.03], [147.0, -23.25], [146.75, -23.15], [146.5, -23.25], [145.97, -23.03], [145.82, -22.68], [145.75, -22.65], [145.68, -22.68], [145.53, -23.03], [145.0, -23.25], [144.47, -23.03], [144.32, -22.68], [143.97, -22.53], [143.82, -22.18], [143.75, -22.15], [143.5, -22.25], [142.97, -22.03], [142.75, -21.5], [142.85, -21.25], [142.75, -21.0], [142.97, -20.47]]]]}, "2025-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.47, -18.97], [146.0, -18.75], [146.25, -18.85], [146.5, -18.75], [146.75, -18.85], [147.0, -18.75], [147.25, -18.85], [147.5, -18.75], [148.03, -18.97], [148.25, -19.5], [148.15, -19.75], [148.25, -20.0], [148.15, -20.25], [148.25, -20.5], [148.03, -21.03], [147.68, -21.18], [147.53, -21.53], [147.0, -21.75], [146.47, -21.53], [146.32, -21.18], [145.97, -21.03], [145.82, -20.68], [145.47, -20.53], [145.25, -20.0], [145.35, -19.75], [145.25, -19.5], [145.47, -18.97]]]]}, "2025-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.47, -18.97], [146.0, -18.75], [146.25, -18.85], [146.5, -18.75], [146.75, -18.85], [147.0, -18.75], [147.25, -18.85], [147.5, -18.75], [148.03, -18.97], [148.25, -19.5], [148.15, -19.75], [148.25, -20.0], [148.03, -20.53], [147.68, -20.68], [147.53, -21.03], [147.0, -21.25], [146.75, -21.15], [146.5, -21.25], [145.97, -21.03], [145.82, -20.68], [145.47, -20.53], [145.25, -20.0], [145.35, -19.75], [145.25, -19.5], [145.47, -18.97]]]]}, "2025-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.0, -18.75], [147.53, -18.97], [147.68, -19.32], [148.03, -19.47], [148.25, -20.0], [148.03, -20.53], [147.5, -20.75], [147.25, -20.65], [147.0, -20.75], [146.75, -20.65], [146.5, -20.75], [145.97, -20.53], [145.75, -20.0], [145.97, -19.47], [146.32, -19.32], [146.47, -18.97], [147.0, -18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.672975547370584}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.912016061866059}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.834958648681663, 23.035464680989605, 22.608731580760377, 23.619580278898525, 23.920889607327922, 23.265685504886278, 23.10313464078041, 23.192889356982846, 23.735709013762403, 24.728073798285607, 24.632828776041663, 24.944104766845726]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.03787511189779, 20.762618001302087, 19.066873168945335, 21.17611211140951, 20.892063395182333, 19.780758158365927, 21.21902745564779, 20.64465738932296, 21.407558695475302, 23.65423482259115, 23.66681315104171, 24.35519688924154]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.861531596743525, -3.6848251424221745, -4.4045867259657046, -3.981897351800536, -3.753595292799268, -4.344206074279846, -4.073915707033425, -4.010053094057797, -3.5100983948019917, -2.2360129734137835, -2.2332611213481472, -2.066865503107053]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3140652847469596, -4.604597939937776, -5.990668445251458, -6.212973398383667, -6.672975547370584, -5.995537116729338, -5.432689530318385, -5.330005861885809, -5.14074032216763, -2.675702096338796, -2.565646651897339, -2.282529116271064]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7496379565276259, -1.8817088541033573, -2.1358330770280483, -1.7517073087466004, -1.5941847937054898, -1.8779830066684065, -1.8940860146815197, -1.9287186128581517, -1.8339778784357308, -1.4365518468731693, -1.4553847616536661, -1.4198009194776557]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0299287978088727, -2.296202815234626, -2.8379056232307716, -2.53276963343994, -2.2810825414342366, -2.638452924621925, -2.5854219521361963, -2.7300132599949816, -2.503852508846402, -1.7891236054236472, -1.6928106979346664, -1.489748394443327]}}