{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:07.370182", "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-Jan-26_to_2024-Jan-30_141.5_-21.5"}, "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": 2024010000746}, "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 26 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 30 2024"}, "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": 74517.63753126617}, "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": -21.5}, "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": 141.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "141.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 143.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[140.35, -21.75], [140.25, -21.5], [140.47, -20.97], [140.82, -20.82], [140.97, -20.47], [141.32, -20.32], [141.47, -19.97], [142.0, -19.75], [142.25, -19.85], [142.5, -19.75], [143.03, -19.97], [143.18, -20.32], [143.53, -20.47], [143.75, -21.0], [143.65, -21.25], [143.75, -21.5], [143.65, -21.75], [143.75, -22.0], [143.53, -22.53], [143.18, -22.68], [143.15, -22.75], [143.25, -23.0], [143.15, -23.25], [143.25, -23.5], [143.03, -24.03], [142.5, -24.25], [142.25, -24.15], [142.0, -24.25], [141.47, -24.03], [141.32, -23.68], [141.25, -23.65], [141.0, -23.75], [140.47, -23.53], [140.25, -23.0], [140.35, -22.75], [140.25, -22.5], [140.35, -22.25], [140.25, -22.0], [140.35, -21.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.75, -21.0], [140.97, -20.47], [141.32, -20.32], [141.47, -19.97], [142.0, -19.75], [142.25, -19.85], [142.5, -19.75], [143.03, -19.97], [143.18, -20.32], [143.53, -20.47], [143.75, -21.0], [143.65, -21.25], [143.75, -21.5], [143.65, -21.75], [143.75, -22.0], [143.53, -22.53], [143.0, -22.75], [142.75, -22.65], [142.5, -22.75], [142.25, -22.65], [142.0, -22.75], [141.47, -22.53], [141.32, -22.18], [140.97, -22.03], [140.75, -21.5], [140.85, -21.25], [140.75, -21.0]]]]}, "2024-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, -22.5], [140.35, -22.25], [140.25, -22.0], [140.35, -21.75], [140.25, -21.5], [140.47, -20.97], [140.82, -20.82], [140.97, -20.47], [141.32, -20.32], [141.47, -19.97], [142.0, -19.75], [142.25, -19.85], [142.5, -19.75], [143.03, -19.97], [143.18, -20.32], [143.53, -20.47], [143.75, -21.0], [143.65, -21.25], [143.75, -21.5], [143.65, -21.75], [143.75, -22.0], [143.53, -22.53], [143.18, -22.68], [143.15, -22.75], [143.25, -23.0], [143.15, -23.25], [143.25, -23.5], [143.03, -24.03], [142.5, -24.25], [142.25, -24.15], [142.0, -24.25], [141.47, -24.03], [141.32, -23.68], [141.25, -23.65], [141.0, -23.75], [140.47, -23.53], [140.25, -23.0], [140.35, -22.75], [140.25, -22.5]]]]}, "2024-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, -22.5], [140.35, -22.25], [140.25, -22.0], [140.35, -21.75], [140.25, -21.5], [140.47, -20.97], [140.82, -20.82], [140.97, -20.47], [141.32, -20.32], [141.47, -19.97], [142.0, -19.75], [142.25, -19.85], [142.5, -19.75], [143.03, -19.97], [143.18, -20.32], [143.53, -20.47], [143.75, -21.0], [143.65, -21.25], [143.75, -21.5], [143.65, -21.75], [143.75, -22.0], [143.53, -22.53], [143.18, -22.68], [143.15, -22.75], [143.25, -23.0], [143.15, -23.25], [143.25, -23.5], [143.03, -24.03], [142.5, -24.25], [142.25, -24.15], [142.0, -24.25], [141.47, -24.03], [141.32, -23.68], [141.25, -23.65], [141.0, -23.75], [140.47, -23.53], [140.25, -23.0], [140.35, -22.75], [140.25, -22.5]]]]}, "2024-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, -22.5], [140.35, -22.25], [140.25, -22.0], [140.35, -21.75], [140.25, -21.5], [140.47, -20.97], [141.0, -20.75], [141.25, -20.85], [141.5, -20.75], [142.03, -20.97], [142.18, -21.32], [142.25, -21.35], [142.5, -21.25], [143.03, -21.47], [143.25, -22.0], [143.15, -22.25], [143.25, -22.5], [143.15, -22.75], [143.25, -23.0], [143.15, -23.25], [143.25, -23.5], [143.03, -24.03], [142.5, -24.25], [142.25, -24.15], [142.0, -24.25], [141.47, -24.03], [141.32, -23.68], [141.25, -23.65], [141.0, -23.75], [140.47, -23.53], [140.25, -23.0], [140.35, -22.75], [140.25, -22.5]]]]}, "2024-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, -22.0], [140.35, -21.75], [140.25, -21.5], [140.47, -20.97], [141.0, -20.75], [141.25, -20.85], [141.5, -20.75], [142.03, -20.97], [142.25, -21.5], [142.15, -21.75], [142.25, -22.0], [142.15, -22.25], [142.25, -22.5], [142.03, -23.03], [141.5, -23.25], [141.25, -23.15], [141.0, -23.25], [140.47, -23.03], [140.25, -22.5], [140.35, -22.25], [140.25, -22.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.625140436691538}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.83214609119629}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.084375890582123, 25.84066119382993, 26.482141592468622, 25.62655171912172, 25.218640153343642]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.37194054720152, 24.460143544641824, 25.74988854580721, 25.03903966241279, 24.493182617576792]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.51487860134632, -5.098007734288971, -4.314806312131832, -5.3208487115159855, -5.306090587563072]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.1182108105195425, -6.625140436691538, -5.084686967151811, -5.7576107056113415, -6.049180780528559]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9268964373281912, -1.9088510183263454, -1.5462801291748778, -1.686436102863786, -1.6261710742218227]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2145960599774295, -2.3013615324983143, -1.7654099154748184, -1.7817705305638942, -1.8282330551644157]}}