{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:20.967385", "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": "2010-Dec-25_to_2010-Dec-29_149.5_-26.0"}, "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": 2010120001127}, "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": "December 25 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 29 2010"}, "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": 89884.08307953874}, "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": ["E.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": -26.0}, "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": 149.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "149.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 147.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 151.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.0, -25.25], [149.53, -25.47], [149.75, -26.0], [149.53, -26.53], [149.0, -26.75], [148.47, -26.53], [148.25, -26.0], [148.47, -25.47], [149.0, -25.25]]]]}, "2010-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.47, -26.53], [148.25, -26.0], [148.47, -25.47], [149.0, -25.25], [149.25, -25.35], [149.5, -25.25], [150.03, -25.47], [150.25, -26.0], [150.03, -26.53], [149.5, -26.75], [149.25, -26.65], [149.0, -26.75], [148.47, -26.53]]]]}, "2010-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.97, -22.47], [147.5, -22.25], [148.03, -22.47], [148.18, -22.82], [148.25, -22.85], [148.32, -22.82], [148.47, -22.47], [149.0, -22.25], [149.53, -22.47], [149.68, -22.82], [150.03, -22.97], [150.18, -23.32], [150.53, -23.47], [150.68, -23.82], [151.03, -23.97], [151.18, -24.32], [151.53, -24.47], [151.68, -24.82], [152.03, -24.97], [152.25, -25.5], [152.03, -26.03], [151.68, -26.18], [151.53, -26.53], [151.0, -26.75], [150.75, -26.65], [150.5, -26.75], [150.25, -26.65], [150.0, -26.75], [149.75, -26.65], [149.5, -26.75], [149.25, -26.65], [149.0, -26.75], [148.47, -26.53], [148.25, -26.0], [148.35, -25.75], [148.25, -25.5], [148.38, -25.2], [147.97, -25.03], [147.82, -24.68], [147.47, -24.53], [147.32, -24.18], [146.97, -24.03], [146.75, -23.5], [146.85, -23.25], [146.75, -23.0], [146.97, -22.47]]]]}, "2010-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.97, -22.47], [147.5, -22.25], [148.03, -22.47], [148.18, -22.82], [148.25, -22.85], [148.32, -22.82], [148.47, -22.47], [149.0, -22.25], [149.53, -22.47], [149.68, -22.82], [150.03, -22.97], [150.18, -23.32], [150.53, -23.47], [150.68, -23.82], [151.03, -23.97], [151.18, -24.32], [151.53, -24.47], [151.68, -24.82], [152.03, -24.97], [152.25, -25.5], [152.03, -26.03], [151.68, -26.18], [151.53, -26.53], [151.0, -26.75], [150.75, -26.65], [150.5, -26.75], [150.25, -26.65], [150.0, -26.75], [149.75, -26.65], [149.5, -26.75], [148.97, -26.53], [148.82, -26.18], [148.47, -26.03], [148.25, -25.5], [148.38, -25.2], [147.97, -25.03], [147.82, -24.68], [147.47, -24.53], [147.32, -24.18], [146.97, -24.03], [146.75, -23.5], [146.85, -23.25], [146.75, -23.0], [146.97, -22.47]]]]}, "2010-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.97, -22.47], [147.5, -22.25], [148.03, -22.47], [148.18, -22.82], [148.25, -22.85], [148.32, -22.82], [148.47, -22.47], [149.0, -22.25], [149.53, -22.47], [149.68, -22.82], [150.03, -22.97], [150.18, -23.32], [150.53, -23.47], [150.68, -23.82], [151.03, -23.97], [151.18, -24.32], [151.53, -24.47], [151.68, -24.82], [152.03, -24.97], [152.25, -25.5], [152.03, -26.03], [151.68, -26.18], [151.53, -26.53], [151.0, -26.75], [150.75, -26.65], [150.5, -26.75], [150.25, -26.65], [150.0, -26.75], [149.75, -26.65], [149.5, -26.75], [148.97, -26.53], [148.82, -26.18], [148.47, -26.03], [148.25, -25.5], [148.38, -25.2], [147.97, -25.03], [147.82, -24.68], [147.47, -24.53], [147.32, -24.18], [146.97, -24.03], [146.75, -23.5], [146.85, -23.25], [146.75, -23.0], [146.97, -22.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.811744836476521}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.299629959368717}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.245801804098562, 22.14743969801907, 22.437585655183284, 21.56638285164837, 22.82007274014552]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.245801804098562, 21.7728036983612, 21.083731457957754, 19.75275241326227, 21.53045935640182]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.759903875514226, -4.0619206768829486, -4.156661437151094, -5.02240547649426, -3.7571814538493045]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.759903875514226, -4.142214848469109, -4.96329878762748, -5.811744836476521, -4.266678636977133]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3145007845982195, -1.3971477489428812, -1.5922653243403213, -1.9476351191765195, -1.453212198328474]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3145007845982195, -1.4110873268260082, -1.8385377734408774, -2.229283159432438, -1.707225024238766]}}