{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:56.504921", "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-25_to_2024-Nov-27_121.0_-31.5"}, "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": 2024110000527}, "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 25 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 27 2024"}, "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": 52281.72178681934}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": -31.5}, "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": 121.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "121.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 119.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -31.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[118.97, -30.97], [119.5, -30.75], [120.03, -30.97], [120.18, -31.32], [120.3, -31.37], [120.47, -30.97], [121.0, -30.75], [121.25, -30.85], [121.5, -30.75], [121.75, -30.85], [122.0, -30.75], [122.25, -30.85], [122.5, -30.75], [123.03, -30.97], [123.25, -31.5], [123.15, -31.75], [123.25, -32.0], [123.15, -32.25], [123.25, -32.5], [123.15, -32.75], [123.25, -33.0], [123.03, -33.53], [122.5, -33.75], [122.0, -33.54], [121.5, -33.75], [121.25, -33.65], [121.0, -33.75], [120.75, -33.65], [120.5, -33.75], [120.25, -33.65], [120.0, -33.75], [119.47, -33.53], [119.25, -33.0], [119.46, -32.5], [119.32, -32.18], [118.97, -32.03], [118.75, -31.5], [118.97, -30.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.97, -32.03], [118.75, -31.5], [118.97, -30.97], [119.5, -30.75], [120.03, -30.97], [120.18, -31.32], [120.3, -31.37], [120.47, -30.97], [121.0, -30.75], [121.25, -30.85], [121.5, -30.75], [121.75, -30.85], [122.0, -30.75], [122.25, -30.85], [122.5, -30.75], [123.03, -30.97], [123.25, -31.5], [123.15, -31.75], [123.25, -32.0], [123.15, -32.25], [123.25, -32.5], [123.15, -32.75], [123.25, -33.0], [123.03, -33.53], [122.5, -33.75], [122.0, -33.54], [121.5, -33.75], [121.25, -33.65], [121.0, -33.75], [120.75, -33.65], [120.5, -33.75], [120.25, -33.65], [120.0, -33.75], [119.47, -33.53], [119.25, -33.0], [119.46, -32.5], [119.32, -32.18], [118.97, -32.03]]]]}, "2024-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.97, -32.03], [118.75, -31.5], [118.97, -30.97], [119.5, -30.75], [120.03, -30.97], [120.18, -31.32], [120.3, -31.37], [120.47, -30.97], [121.0, -30.75], [121.25, -30.85], [121.5, -30.75], [121.75, -30.85], [122.0, -30.75], [122.25, -30.85], [122.5, -30.75], [123.03, -30.97], [123.25, -31.5], [123.15, -31.75], [123.25, -32.0], [123.15, -32.25], [123.25, -32.5], [123.15, -32.75], [123.25, -33.0], [123.03, -33.53], [122.5, -33.75], [122.0, -33.54], [121.5, -33.75], [121.25, -33.65], [121.0, -33.75], [120.75, -33.65], [120.5, -33.75], [120.25, -33.65], [120.0, -33.75], [119.47, -33.53], [119.25, -33.0], [119.46, -32.5], [119.32, -32.18], [118.97, -32.03]]]]}, "2024-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.97, -32.03], [118.75, -31.5], [118.97, -30.97], [119.5, -30.75], [120.03, -30.97], [120.18, -31.32], [120.3, -31.37], [120.47, -30.97], [121.0, -30.75], [121.25, -30.85], [121.5, -30.75], [121.75, -30.85], [122.0, -30.75], [122.25, -30.85], [122.5, -30.75], [123.03, -30.97], [123.25, -31.5], [123.15, -31.75], [123.25, -32.0], [123.15, -32.25], [123.25, -32.5], [123.15, -32.75], [123.25, -33.0], [123.03, -33.53], [122.5, -33.75], [122.0, -33.54], [121.5, -33.75], [121.25, -33.65], [121.0, -33.75], [120.75, -33.65], [120.5, -33.75], [120.25, -33.65], [120.0, -33.75], [119.47, -33.53], [119.25, -33.0], [119.46, -32.5], [119.32, -32.18], [118.97, -32.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.659831986491383}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.524267549532357}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.783800252278695, 14.112994639078806, 15.349630991617914]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.43184305826827, 12.692840830485068, 14.185145314534509]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.9900755760418125, -6.60402246474612, -4.97870460780914]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.614041350080356, -7.659831986491383, -6.03038486562059]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3534849899620844, -1.7789960156720248, -1.360559423751719]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5015196210033728, -1.9891537370746466, -1.5578304482635033]}}