{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:15.916289", "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": "2021-Sep-21_to_2021-Sep-25_128.5_-16.0"}, "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": 2021090000617}, "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 21 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 25 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 1165979.480180587}, "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", "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": ["Indian Ocean", "Timor 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": -16.0}, "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": 128.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "128.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 122.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 145.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.47, -23.53], [127.25, -23.0], [127.47, -22.47], [128.0, -22.25], [128.25, -22.35], [128.32, -22.32], [128.47, -21.97], [128.82, -21.82], [128.85, -21.75], [128.75, -21.5], [128.97, -20.97], [129.5, -20.75], [129.75, -20.85], [129.82, -20.82], [129.97, -20.47], [130.5, -20.25], [130.75, -20.35], [130.82, -20.32], [130.97, -19.97], [131.32, -19.82], [131.35, -19.75], [131.25, -19.5], [131.35, -19.25], [131.25, -19.0], [131.47, -18.47], [132.0, -18.25], [132.25, -18.35], [132.32, -18.32], [132.35, -18.25], [132.25, -18.0], [132.47, -17.47], [133.0, -17.25], [133.25, -17.35], [133.5, -17.25], [133.8, -17.37], [133.97, -16.97], [134.5, -16.75], [134.75, -16.85], [135.0, -16.75], [135.25, -16.85], [135.5, -16.75], [135.75, -16.85], [136.0, -16.75], [136.25, -16.85], [136.5, -16.75], [136.75, -16.85], [137.0, -16.75], [137.53, -16.97], [137.68, -17.32], [137.75, -17.35], [138.0, -17.25], [138.53, -17.47], [138.68, -17.82], [139.03, -17.97], [139.18, -18.32], [139.25, -18.35], [139.32, -18.32], [139.47, -17.97], [140.0, -17.75], [140.25, -17.85], [140.5, -17.75], [140.75, -17.85], [141.0, -17.75], [141.25, -17.85], [141.5, -17.75], [141.75, -17.85], [142.0, -17.75], [142.25, -17.85], [142.5, -17.75], [143.03, -17.97], [143.18, -18.32], [143.25, -18.35], [143.5, -18.25], [144.03, -18.47], [144.18, -18.82], [144.53, -18.97], [144.68, -19.32], [145.03, -19.47], [145.18, -19.82], [145.53, -19.97], [145.68, -20.32], [146.03, -20.47], [146.25, -21.0], [146.03, -21.53], [145.5, -21.75], [145.25, -21.65], [145.0, -21.75], [144.75, -21.65], [144.5, -21.75], [143.97, -21.53], [143.75, -21.0], [143.85, -20.75], [143.82, -20.68], [143.5, -20.54], [143.0, -20.75], [142.75, -20.65], [142.5, -20.75], [142.25, -20.65], [142.18, -20.68], [142.03, -21.03], [141.5, -21.25], [141.25, -21.15], [141.0, -21.25], [140.75, -21.15], [140.68, -21.18], [140.65, -21.25], [140.75, -21.5], [140.65, -21.75], [140.75, -22.0], [140.53, -22.53], [140.0, -22.75], [139.47, -22.53], [139.25, -22.0], [139.35, -21.75], [139.3, -21.62], [139.0, -21.75], [138.75, -21.65], [138.5, -21.75], [137.97, -21.53], [137.82, -21.18], [137.75, -21.15], [137.5, -21.25], [137.07, -21.07], [137.25, -21.5], [137.03, -22.03], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.75, -22.15], [135.68, -22.18], [135.53, -22.53], [135.0, -22.75], [134.75, -22.65], [134.68, -22.68], [134.53, -23.03], [134.18, -23.18], [134.03, -23.53], [133.5, -23.75], [133.25, -23.65], [133.0, -23.75], [132.75, -23.65], [132.5, -23.75], [132.25, -23.65], [132.18, -23.68], [132.03, -24.03], [131.5, -24.25], [131.25, -24.15], [131.0, -24.25], [130.5, -24.04], [130.0, -24.25], [129.75, -24.15], [129.68, -24.18], [129.53, -24.53], [129.0, -24.75], [128.47, -24.53], [128.25, -24.0], [128.35, -23.75], [128.32, -23.68], [128.25, -23.65], [128.0, -23.75], [127.47, -23.53]]]]}, "2021-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.35, -20.25], [123.25, -20.0], [123.47, -19.47], [123.82, -19.32], [123.85, -19.25], [123.75, -19.0], [123.97, -18.47], [124.32, -18.32], [124.47, -17.97], [124.82, -17.82], [124.97, -17.47], [125.32, -17.32], [125.46, -17.0], [125.25, -16.5], [125.47, -15.97], [125.82, -15.82], [125.97, -15.47], [126.32, -15.32], [126.47, -14.97], [126.82, -14.82], [126.97, -14.47], [127.5, -14.25], [128.03, -14.47], [128.18, -14.82], [128.25, -14.85], [128.5, -14.75], [128.75, -14.85], [129.0, -14.75], [129.25, -14.85], [129.5, -14.75], [129.75, -14.85], [130.0, -14.75], [130.25, -14.85], [130.5, -14.75], [130.75, -14.85], [131.0, -14.75], [131.53, -14.97], [131.68, -15.32], [132.03, -15.47], [132.25, -16.0], [132.15, -16.25], [132.25, -16.5], [132.15, -16.75], [132.18, -16.82], [132.53, -16.97], [132.7, -17.37], [133.0, -17.25], [133.25, -17.35], [133.5, -17.25], [133.8, -17.37], [133.97, -16.97], [134.5, -16.75], [134.75, -16.85], [135.0, -16.75], [135.25, -16.85], [135.5, -16.75], [135.75, -16.85], [136.0, -16.75], [136.25, -16.85], [136.5, -16.75], [136.75, -16.85], [137.0, -16.75], [137.53, -16.97], [137.68, -17.32], [137.75, -17.35], [138.0, -17.25], [138.53, -17.47], [138.68, -17.82], [139.03, -17.97], [139.18, -18.32], [139.25, -18.35], [139.32, -18.32], [139.47, -17.97], [140.0, -17.75], [140.25, -17.85], [140.5, -17.75], [140.75, -17.85], [141.0, -17.75], [141.25, -17.85], [141.5, -17.75], [141.75, -17.85], [142.0, -17.75], [142.25, -17.85], [142.5, -17.75], [143.03, -17.97], [143.18, -18.32], [143.25, -18.35], [143.5, -18.25], [144.03, -18.47], [144.18, -18.82], [144.53, -18.97], [144.68, -19.32], [145.03, -19.47], [145.18, -19.82], [145.53, -19.97], [145.68, -20.32], [146.03, -20.47], [146.25, -21.0], [146.03, -21.53], [145.5, -21.75], [145.25, -21.65], [145.0, -21.75], [144.75, -21.65], [144.5, -21.75], [143.97, -21.53], [143.75, -21.0], [143.85, -20.75], [143.82, -20.68], [143.5, -20.54], [143.0, -20.75], [142.75, -20.65], [142.5, -20.75], [142.25, -20.65], [142.18, -20.68], [142.03, -21.03], [141.5, -21.25], [141.25, -21.15], [141.0, -21.25], [140.75, -21.15], [140.68, -21.18], [140.65, -21.25], [140.75, -21.5], [140.65, -21.75], [140.75, -22.0], [140.53, -22.53], [140.0, -22.75], [139.47, -22.53], [139.25, -22.0], [139.35, -21.75], [139.3, -21.62], [139.0, -21.75], [138.75, -21.65], [138.5, -21.75], [137.97, -21.53], [137.82, -21.18], [137.75, -21.15], [137.5, -21.25], [137.07, -21.07], [137.25, -21.5], [137.03, -22.03], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.75, -22.15], [135.68, -22.18], [135.53, -22.53], [135.0, -22.75], [134.75, -22.65], [134.68, -22.68], [134.53, -23.03], [134.18, -23.18], [134.03, -23.53], [133.5, -23.75], [133.25, -23.65], [133.0, -23.75], [132.75, -23.65], [132.5, -23.75], [132.25, -23.65], [132.18, -23.68], [132.03, -24.03], [131.5, -24.25], [131.25, -24.15], [131.0, -24.25], [130.5, -24.04], [130.0, -24.25], [129.75, -24.15], [129.68, -24.18], [129.53, -24.53], [129.0, -24.75], [128.47, -24.53], [128.25, -24.0], [128.35, -23.75], [128.32, -23.68], [128.25, -23.65], [128.0, -23.75], [127.47, -23.53], [127.25, -23.0], [127.47, -22.47], [128.0, -22.25], [127.75, -22.15], [127.5, -22.25], [127.25, -22.15], [127.0, -22.25], [126.75, -22.15], [126.5, -22.25], [126.0, -22.04], [125.5, -22.25], [125.0, -22.04], [124.5, -22.25], [123.97, -22.03], [123.82, -21.68], [123.47, -21.53], [123.25, -21.0], [123.35, -20.75], [123.25, -20.5], [123.35, -20.25]], [[128.25, -22.35], [128.32, -22.32], [128.38, -22.2], [128.25, -22.15], [128.0, -22.25], [128.25, -22.35]]]]}, "2021-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.47, -16.47], [123.0, -16.25], [123.5, -16.46], [123.82, -16.32], [123.85, -16.25], [123.75, -16.0], [123.97, -15.47], [124.32, -15.32], [124.47, -14.97], [125.0, -14.75], [125.25, -14.85], [125.5, -14.75], [126.03, -14.97], [126.18, -15.32], [126.25, -15.35], [126.32, -15.32], [126.47, -14.97], [126.82, -14.82], [126.97, -14.47], [127.32, -14.32], [127.47, -13.97], [128.0, -13.75], [128.53, -13.97], [128.7, -14.37], [129.0, -14.25], [129.53, -14.47], [129.68, -14.82], [129.75, -14.85], [130.0, -14.75], [130.25, -14.85], [130.5, -14.75], [130.75, -14.85], [131.0, -14.75], [131.53, -14.97], [131.68, -15.32], [132.03, -15.47], [132.25, -16.0], [132.15, -16.25], [132.25, -16.5], [132.15, -16.75], [132.18, -16.82], [132.53, -16.97], [132.7, -17.37], [133.0, -17.25], [133.25, -17.35], [133.5, -17.25], [133.8, -17.37], [133.97, -16.97], [134.5, -16.75], [134.75, -16.85], [135.0, -16.75], [135.25, -16.85], [135.5, -16.75], [135.75, -16.85], [136.0, -16.75], [136.25, -16.85], [136.5, -16.75], [136.75, -16.85], [137.0, -16.75], [137.53, -16.97], [137.68, -17.32], [137.75, -17.35], [138.0, -17.25], [138.53, -17.47], [138.68, -17.82], [139.03, -17.97], [139.18, -18.32], [139.25, -18.35], [139.32, -18.32], [139.47, -17.97], [140.0, -17.75], [140.25, -17.85], [140.5, -17.75], [140.75, -17.85], [141.0, -17.75], [141.25, -17.85], [141.5, -17.75], [141.75, -17.85], [142.0, -17.75], [142.25, -17.85], [142.5, -17.75], [143.03, -17.97], [143.18, -18.32], [143.25, -18.35], [143.5, -18.25], [144.03, -18.47], [144.18, -18.82], [144.53, -18.97], [144.68, -19.32], [145.03, -19.47], [145.18, -19.82], [145.53, -19.97], [145.68, -20.32], [146.03, -20.47], [146.25, -21.0], [146.03, -21.53], [145.5, -21.75], [145.25, -21.65], [145.0, -21.75], [144.75, -21.65], [144.5, -21.75], [143.97, -21.53], [143.75, -21.0], [143.85, -20.75], [143.82, -20.68], [143.5, -20.54], [143.0, -20.75], [142.75, -20.65], [142.5, -20.75], [142.25, -20.65], [142.18, -20.68], [142.03, -21.03], [141.5, -21.25], [141.25, -21.15], [141.0, -21.25], [140.75, -21.15], [140.68, -21.18], [140.65, -21.25], [140.75, -21.5], [140.65, -21.75], [140.75, -22.0], [140.53, -22.53], [140.0, -22.75], [139.47, -22.53], [139.25, -22.0], [139.35, -21.75], [139.3, -21.62], [139.0, -21.75], [138.75, -21.65], [138.5, -21.75], [137.97, -21.53], [137.82, -21.18], [137.75, -21.15], [137.5, -21.25], [137.07, -21.07], [137.25, -21.5], [137.03, -22.03], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.75, -22.15], [135.68, -22.18], [135.53, -22.53], [135.0, -22.75], [134.75, -22.65], [134.68, -22.68], [134.53, -23.03], [134.18, -23.18], [134.03, -23.53], [133.5, -23.75], [133.25, -23.65], [133.0, -23.75], [132.75, -23.65], [132.5, -23.75], [132.25, -23.65], [132.18, -23.68], [132.03, -24.03], [131.5, -24.25], [131.25, -24.15], [131.0, -24.25], [130.5, -24.04], [130.0, -24.25], [129.75, -24.15], [129.68, -24.18], [129.53, -24.53], [129.0, -24.75], [128.47, -24.53], [128.25, -24.0], [128.35, -23.75], [128.32, -23.68], [128.25, -23.65], [128.0, -23.75], [127.47, -23.53], [127.25, -23.0], [127.47, -22.47], [128.0, -22.25], [127.75, -22.15], [127.5, -22.25], [127.25, -22.15], [127.0, -22.25], [126.75, -22.15], [126.5, -22.25], [126.0, -22.04], [125.5, -22.25], [125.0, -22.04], [124.5, -22.25], [123.97, -22.03], [123.82, -21.68], [123.47, -21.53], [123.25, -21.0], [123.35, -20.75], [123.25, -20.5], [123.35, -20.25], [123.25, -20.0], [123.47, -19.47], [123.82, -19.32], [123.85, -19.25], [123.75, -19.0], [123.85, -18.75], [123.82, -18.68], [123.75, -18.65], [123.5, -18.75], [122.97, -18.53], [122.82, -18.18], [122.47, -18.03], [122.25, -17.5], [122.35, -17.25], [122.25, -17.0], [122.47, -16.47]], [[128.25, -22.35], [128.32, -22.32], [128.38, -22.2], [128.25, -22.15], [128.0, -22.25], [128.25, -22.35]]]]}, "2021-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.47, -16.47], [123.0, -16.25], [123.5, -16.46], [123.82, -16.32], [123.85, -16.25], [123.75, -16.0], [123.97, -15.47], [124.32, -15.32], [124.47, -14.97], [125.0, -14.75], [125.25, -14.85], [125.5, -14.75], [126.03, -14.97], [126.18, -15.32], [126.25, -15.35], [126.32, -15.32], [126.47, -14.97], [126.82, -14.82], [126.97, -14.47], [127.32, -14.32], [127.47, -13.97], [128.0, -13.75], [128.53, -13.97], [128.7, -14.37], [129.0, -14.25], [129.53, -14.47], [129.68, -14.82], [129.75, -14.85], [130.0, -14.75], [130.25, -14.85], [130.5, -14.75], [130.75, -14.85], [131.0, -14.75], [131.53, -14.97], [131.68, -15.32], [132.03, -15.47], [132.25, -16.0], [132.15, -16.25], [132.25, -16.5], [132.15, -16.75], [132.18, -16.82], [132.53, -16.97], [132.75, -17.5], [132.65, -17.75], [132.68, -17.82], [133.03, -17.97], [133.25, -18.5], [133.15, -18.75], [133.25, -19.0], [133.03, -19.53], [132.68, -19.68], [132.53, -20.03], [132.0, -20.25], [131.75, -20.15], [131.68, -20.18], [131.65, -20.25], [131.75, -20.5], [131.65, -20.75], [131.75, -21.0], [131.65, -21.25], [131.75, -21.5], [131.53, -22.03], [131.0, -22.25], [130.47, -22.03], [130.32, -21.68], [130.25, -21.65], [130.0, -21.75], [129.75, -21.65], [129.68, -21.68], [129.53, -22.03], [129.0, -22.25], [128.75, -22.15], [128.5, -22.25], [128.25, -22.15], [128.0, -22.25], [127.75, -22.15], [127.5, -22.25], [127.25, -22.15], [127.0, -22.25], [126.75, -22.15], [126.5, -22.25], [126.0, -22.04], [125.5, -22.25], [125.0, -22.04], [124.5, -22.25], [123.97, -22.03], [123.82, -21.68], [123.47, -21.53], [123.25, -21.0], [123.35, -20.75], [123.25, -20.5], [123.35, -20.25], [123.25, -20.0], [123.47, -19.47], [123.82, -19.32], [123.85, -19.25], [123.75, -19.0], [123.85, -18.75], [123.82, -18.68], [123.75, -18.65], [123.5, -18.75], [122.97, -18.53], [122.82, -18.18], [122.47, -18.03], [122.25, -17.5], [122.35, -17.25], [122.25, -17.0], [122.47, -16.47]]]]}, "2021-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.47, -16.47], [123.0, -16.25], [123.5, -16.46], [123.82, -16.32], [123.85, -16.25], [123.75, -16.0], [123.97, -15.47], [124.32, -15.32], [124.47, -14.97], [125.0, -14.75], [125.25, -14.85], [125.5, -14.75], [126.03, -14.97], [126.18, -15.32], [126.5, -15.46], [126.82, -15.32], [126.85, -15.25], [126.75, -15.0], [126.97, -14.47], [127.32, -14.32], [127.47, -13.97], [128.0, -13.75], [128.53, -13.97], [128.7, -14.37], [129.0, -14.25], [129.53, -14.47], [129.68, -14.82], [129.75, -14.85], [130.0, -14.75], [130.53, -14.97], [130.75, -15.5], [130.53, -16.03], [130.18, -16.18], [130.03, -16.53], [129.68, -16.68], [129.53, -17.03], [129.18, -17.18], [129.15, -17.25], [129.25, -17.5], [129.15, -17.75], [129.25, -18.0], [129.03, -18.53], [128.68, -18.68], [128.53, -19.03], [128.0, -19.25], [127.75, -19.15], [127.5, -19.25], [127.2, -19.12], [127.03, -19.53], [126.5, -19.75], [126.25, -19.65], [126.0, -19.75], [125.47, -19.53], [125.32, -19.18], [125.25, -19.15], [125.0, -19.25], [124.75, -19.15], [124.5, -19.25], [123.97, -19.03], [123.82, -18.68], [123.75, -18.65], [123.5, -18.75], [122.97, -18.53], [122.82, -18.18], [122.47, -18.03], [122.25, -17.5], [122.35, -17.25], [122.25, -17.0], [122.47, -16.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.19556966191709}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.806721054324209}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.043130685410745, 19.832931498683536, 20.758267022573875, 23.644938439560804, 26.203379807280214]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.94791270377766, 14.089721084382234, 16.607718845834086, 21.26933711696546, 24.36871796913198]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.3962479935930165, -6.874245232256047, -6.176935009802949, -4.639296795781944, -2.57235929767785]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.851440386450065, -9.19556966191709, -9.030200945872593, -6.31387063475853, -3.5616579179469454]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8765133322171845, -2.701265565047239, -2.630747580454491, -2.2684536840841543, -1.6340383458061116]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3121969511183287, -4.539524036744557, -5.723774930902718, -3.423854060984717, -1.9988531798687073]}}