{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:40.173564", "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": "2024-Nov-20_to_2024-Nov-25_120.5_-23.0"}, "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": 2024110000388}, "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": "November 20 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 25 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 178851.3278203011}, "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"]}, "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": []}, "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": -23.0}, "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": 120.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "120.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 119.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 127.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.25, -22.35], [120.5, -22.25], [120.75, -22.35], [120.82, -22.32], [120.97, -21.97], [121.5, -21.75], [122.03, -21.97], [122.25, -22.5], [122.04, -23.0], [122.25, -23.5], [122.15, -23.75], [122.25, -24.0], [122.03, -24.53], [121.5, -24.75], [120.97, -24.53], [120.82, -24.18], [120.75, -24.15], [120.5, -24.25], [120.25, -24.15], [120.0, -24.25], [119.75, -24.15], [119.5, -24.25], [118.97, -24.03], [118.75, -23.5], [118.97, -22.97], [119.32, -22.82], [119.47, -22.47], [120.0, -22.25], [120.25, -22.35]]], [[[123.47, -22.53], [123.25, -22.0], [123.47, -21.47], [124.0, -21.25], [124.53, -21.47], [124.75, -22.0], [124.53, -22.53], [124.0, -22.75], [123.47, -22.53]]]]}, "2024-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.0, -22.25], [120.25, -22.35], [120.5, -22.25], [120.75, -22.35], [120.82, -22.32], [120.97, -21.97], [121.5, -21.75], [121.75, -21.85], [121.82, -21.82], [121.97, -21.47], [122.32, -21.32], [122.47, -20.97], [123.0, -20.75], [123.25, -20.85], [123.5, -20.75], [123.75, -20.85], [123.82, -20.82], [123.85, -20.75], [123.75, -20.5], [123.97, -19.97], [124.5, -19.75], [125.03, -19.97], [125.25, -20.5], [125.15, -20.75], [125.25, -21.0], [125.03, -21.53], [124.68, -21.68], [124.65, -21.75], [124.68, -21.82], [125.03, -21.97], [125.25, -22.5], [125.03, -23.03], [124.68, -23.18], [124.65, -23.25], [124.68, -23.32], [124.75, -23.35], [125.0, -23.25], [125.53, -23.47], [125.75, -24.0], [125.53, -24.53], [125.0, -24.75], [124.75, -24.65], [124.5, -24.75], [124.25, -24.65], [124.0, -24.75], [123.47, -24.53], [123.32, -24.18], [122.97, -24.03], [122.82, -23.68], [122.75, -23.65], [122.68, -23.68], [122.65, -23.75], [122.75, -24.0], [122.53, -24.53], [122.0, -24.75], [121.75, -24.65], [121.5, -24.75], [120.97, -24.53], [120.82, -24.18], [120.75, -24.15], [120.5, -24.25], [120.25, -24.15], [120.0, -24.25], [119.75, -24.15], [119.5, -24.25], [118.97, -24.03], [118.75, -23.5], [118.97, -22.97], [119.32, -22.82], [119.47, -22.47], [120.0, -22.25]]]]}, "2024-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.0, -22.25], [120.25, -22.35], [120.5, -22.25], [120.75, -22.35], [120.82, -22.32], [120.97, -21.97], [121.5, -21.75], [121.75, -21.85], [121.82, -21.82], [121.97, -21.47], [122.32, -21.32], [122.47, -20.97], [123.0, -20.75], [123.25, -20.85], [123.5, -20.75], [123.75, -20.85], [123.82, -20.82], [123.85, -20.75], [123.75, -20.5], [123.97, -19.97], [124.5, -19.75], [125.03, -19.97], [125.25, -20.5], [125.15, -20.75], [125.25, -21.0], [125.04, -21.5], [125.25, -22.0], [125.15, -22.25], [125.25, -22.5], [125.15, -22.75], [125.18, -22.82], [125.25, -22.85], [125.5, -22.75], [125.75, -22.85], [126.0, -22.75], [126.25, -22.85], [126.5, -22.75], [127.03, -22.97], [127.25, -23.5], [127.15, -23.75], [127.18, -23.82], [127.53, -23.97], [127.75, -24.5], [127.53, -25.03], [127.0, -25.25], [126.75, -25.15], [126.5, -25.25], [126.25, -25.15], [126.0, -25.25], [125.75, -25.15], [125.5, -25.25], [125.25, -25.15], [125.0, -25.25], [124.75, -25.15], [124.5, -25.25], [124.25, -25.15], [124.0, -25.25], [123.75, -25.15], [123.5, -25.25], [123.0, -25.04], [122.5, -25.25], [122.25, -25.15], [122.0, -25.25], [121.47, -25.03], [121.32, -24.68], [121.25, -24.65], [121.0, -24.75], [120.47, -24.53], [120.32, -24.18], [120.25, -24.15], [120.0, -24.25], [119.75, -24.15], [119.5, -24.25], [118.97, -24.03], [118.75, -23.5], [118.97, -22.97], [119.32, -22.82], [119.47, -22.47], [120.0, -22.25]]]]}, "2024-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.0, -22.25], [120.25, -22.35], [120.5, -22.25], [120.75, -22.35], [120.82, -22.32], [120.97, -21.97], [121.5, -21.75], [121.75, -21.85], [121.82, -21.82], [121.97, -21.47], [122.32, -21.32], [122.47, -20.97], [123.0, -20.75], [123.25, -20.85], [123.5, -20.75], [123.75, -20.85], [123.82, -20.82], [123.85, -20.75], [123.75, -20.5], [123.97, -19.97], [124.5, -19.75], [125.03, -19.97], [125.25, -20.5], [125.15, -20.75], [125.25, -21.0], [125.04, -21.5], [125.25, -22.0], [125.15, -22.25], [125.25, -22.5], [125.15, -22.75], [125.18, -22.82], [125.25, -22.85], [125.5, -22.75], [125.75, -22.85], [126.0, -22.75], [126.25, -22.85], [126.5, -22.75], [127.03, -22.97], [127.25, -23.5], [127.15, -23.75], [127.18, -23.82], [127.53, -23.97], [127.75, -24.5], [127.53, -25.03], [127.0, -25.25], [126.75, -25.15], [126.5, -25.25], [126.25, -25.15], [126.0, -25.25], [125.75, -25.15], [125.5, -25.25], [125.25, -25.15], [125.0, -25.25], [124.75, -25.15], [124.5, -25.25], [124.25, -25.15], [124.0, -25.25], [123.75, -25.15], [123.5, -25.25], [123.0, -25.04], [122.5, -25.25], [122.25, -25.15], [122.0, -25.25], [121.47, -25.03], [121.32, -24.68], [121.25, -24.65], [121.0, -24.75], [120.47, -24.53], [120.32, -24.18], [120.25, -24.15], [120.0, -24.25], [119.75, -24.15], [119.5, -24.25], [118.97, -24.03], [118.75, -23.5], [118.97, -22.97], [119.32, -22.82], [119.47, -22.47], [120.0, -22.25]]]]}, "2024-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.97, -24.03], [118.75, -23.5], [118.97, -22.97], [119.5, -22.75], [119.75, -22.85], [119.82, -22.82], [119.97, -22.47], [120.5, -22.25], [120.75, -22.35], [120.82, -22.32], [120.97, -21.97], [121.5, -21.75], [121.75, -21.85], [121.82, -21.82], [121.97, -21.47], [122.5, -21.25], [122.8, -21.37], [122.97, -20.97], [123.5, -20.75], [123.75, -20.85], [124.0, -20.75], [124.53, -20.97], [124.68, -21.32], [125.03, -21.47], [125.25, -22.0], [125.15, -22.25], [125.25, -22.5], [125.15, -22.75], [125.18, -22.82], [125.25, -22.85], [125.5, -22.75], [125.75, -22.85], [126.0, -22.75], [126.25, -22.85], [126.5, -22.75], [127.03, -22.97], [127.25, -23.5], [127.15, -23.75], [127.18, -23.82], [127.53, -23.97], [127.75, -24.5], [127.53, -25.03], [127.0, -25.25], [126.75, -25.15], [126.5, -25.25], [126.25, -25.15], [126.0, -25.25], [125.75, -25.15], [125.5, -25.25], [125.25, -25.15], [125.0, -25.25], [124.75, -25.15], [124.5, -25.25], [124.25, -25.15], [124.0, -25.25], [123.75, -25.15], [123.5, -25.25], [123.0, -25.04], [122.5, -25.25], [122.25, -25.15], [122.0, -25.25], [121.47, -25.03], [121.32, -24.68], [121.25, -24.65], [121.0, -24.75], [120.47, -24.53], [120.32, -24.18], [120.25, -24.15], [120.0, -24.25], [119.75, -24.15], [119.5, -24.25], [118.97, -24.03]]]]}, "2024-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.0, -22.75], [123.53, -22.97], [123.75, -23.5], [123.53, -24.03], [123.18, -24.18], [123.03, -24.53], [122.5, -24.75], [121.97, -24.53], [121.75, -24.0], [121.97, -23.47], [122.32, -23.32], [122.47, -22.97], [123.0, -22.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.453420732556992}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.747637352472242}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.10782163215407, 27.87610213668256, 26.864593376684468, 26.702271064879426, 27.029066055122485, 27.381794230143214]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.484700775146507, 25.55828755696615, 24.383905029296898, 24.30365142822268, 24.729311879475915, 26.5853261311849]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.884121718368926, -3.9721378002047536, -4.805124270020085, -5.097030191470479, -4.773019635829055, -4.403166732305891]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.171141244449927, -4.7805990470316715, -5.746042969411292, -6.453420732556992, -5.928867448210269, -4.761232721322642]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7496962204094162, -1.4958069855748262, -1.7399524759320646, -1.852978459876393, -1.705240904190028, -1.5409924582709817]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.165017867061052, -1.84134212113733, -2.270427432522444, -2.4381701275065364, -2.0174557344695705, -1.5961590363434175]}}