{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:26:58.062819", "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-Aug-24_to_2021-Aug-26_140.0_-29.0"}, "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": 2021080000949}, "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": "August 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 26 2021"}, "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": 65031.43897657789}, "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": -29.0}, "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": 140.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "140.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 136.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 140.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.32, -28.82], [137.35, -28.75], [137.32, -28.68], [136.97, -28.53], [136.75, -28.0], [136.85, -27.75], [136.75, -27.5], [136.97, -26.97], [137.32, -26.82], [137.47, -26.47], [138.0, -26.25], [138.25, -26.35], [138.5, -26.25], [139.03, -26.47], [139.25, -27.0], [139.15, -27.25], [139.25, -27.5], [139.15, -27.75], [139.25, -28.0], [139.15, -28.25], [139.25, -28.5], [139.47, -27.97], [140.0, -27.75], [140.53, -27.97], [140.75, -28.5], [140.65, -28.75], [140.75, -29.0], [140.65, -29.25], [140.75, -29.5], [140.65, -29.75], [140.75, -30.0], [140.53, -30.53], [140.0, -30.75], [139.47, -30.53], [139.32, -30.18], [139.25, -30.15], [139.0, -30.25], [138.75, -30.15], [138.68, -30.18], [138.53, -30.53], [138.0, -30.75], [137.75, -30.65], [137.5, -30.75], [137.25, -30.65], [137.0, -30.75], [136.47, -30.53], [136.25, -30.0], [136.47, -29.47], [136.82, -29.32], [136.97, -28.97], [137.32, -28.82]], [[139.15, -28.75], [139.18, -28.82], [139.25, -28.85], [139.32, -28.82], [139.35, -28.75], [139.25, -28.5], [139.15, -28.75]]]]}, "2021-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.32, -28.82], [137.35, -28.75], [137.32, -28.68], [136.97, -28.53], [136.75, -28.0], [136.85, -27.75], [136.75, -27.5], [136.97, -26.97], [137.32, -26.82], [137.47, -26.47], [138.0, -26.25], [138.25, -26.35], [138.5, -26.25], [139.03, -26.47], [139.25, -27.0], [139.15, -27.25], [139.25, -27.5], [139.15, -27.75], [139.25, -28.0], [139.15, -28.25], [139.25, -28.5], [139.47, -27.97], [140.0, -27.75], [140.53, -27.97], [140.75, -28.5], [140.65, -28.75], [140.75, -29.0], [140.65, -29.25], [140.75, -29.5], [140.65, -29.75], [140.75, -30.0], [140.53, -30.53], [140.0, -30.75], [139.47, -30.53], [139.32, -30.18], [139.25, -30.15], [139.0, -30.25], [138.75, -30.15], [138.68, -30.18], [138.53, -30.53], [138.0, -30.75], [137.75, -30.65], [137.5, -30.75], [137.25, -30.65], [137.0, -30.75], [136.47, -30.53], [136.25, -30.0], [136.47, -29.47], [136.82, -29.32], [136.97, -28.97], [137.32, -28.82]], [[139.15, -28.75], [139.18, -28.82], [139.25, -28.85], [139.32, -28.82], [139.35, -28.75], [139.25, -28.5], [139.15, -28.75]]]]}, "2021-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.32, -28.82], [137.35, -28.75], [137.32, -28.68], [136.97, -28.53], [136.75, -28.0], [136.85, -27.75], [136.75, -27.5], [136.97, -26.97], [137.32, -26.82], [137.47, -26.47], [138.0, -26.25], [138.25, -26.35], [138.5, -26.25], [139.03, -26.47], [139.25, -27.0], [139.15, -27.25], [139.25, -27.5], [139.15, -27.75], [139.25, -28.0], [139.15, -28.25], [139.25, -28.5], [139.47, -27.97], [140.0, -27.75], [140.53, -27.97], [140.75, -28.5], [140.65, -28.75], [140.75, -29.0], [140.65, -29.25], [140.75, -29.5], [140.65, -29.75], [140.75, -30.0], [140.53, -30.53], [140.0, -30.75], [139.47, -30.53], [139.32, -30.18], [139.25, -30.15], [139.0, -30.25], [138.75, -30.15], [138.68, -30.18], [138.53, -30.53], [138.0, -30.75], [137.75, -30.65], [137.5, -30.75], [137.25, -30.65], [137.0, -30.75], [136.47, -30.53], [136.25, -30.0], [136.47, -29.47], [136.82, -29.32], [136.97, -28.97], [137.32, -28.82]], [[139.15, -28.75], [139.18, -28.82], [139.25, -28.85], [139.32, -28.82], [139.35, -28.75], [139.25, -28.5], [139.15, -28.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.444742638433752}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.304891722060542}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.185816553874417, 11.460985298785033, 11.984072582795932]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.286249759791644, 10.521131533763537, 11.073055702234967]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.46415103450077, -4.368383928247904, -4.0821402034329495]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.444742638433752, -4.915696035661654, -4.584825721883703]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.472290939069315, -1.4135476837213092, -1.2788302825647808]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6488623265886704, -1.5258769202169666, -1.4132799680803114]}}