{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:59.141109", "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": "2015-May-21_to_2015-May-23_134.5_-24.5"}, "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": 2015050000727}, "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": "May 21 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 23 2015"}, "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": 112539.95495567675}, "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": -24.5}, "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": 134.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "134.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 133.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 138.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -27.25}, "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": {"2015-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -22.47], [134.0, -22.25], [134.25, -22.35], [134.5, -22.25], [134.75, -22.35], [135.0, -22.25], [135.25, -22.35], [135.5, -22.25], [135.75, -22.35], [136.0, -22.25], [136.25, -22.35], [136.5, -22.25], [136.75, -22.35], [137.0, -22.25], [137.25, -22.35], [137.5, -22.25], [137.75, -22.35], [138.0, -22.25], [138.53, -22.47], [138.75, -23.0], [138.53, -23.53], [138.18, -23.68], [138.03, -24.03], [137.5, -24.25], [137.25, -24.15], [137.18, -24.18], [137.15, -24.25], [137.25, -24.5], [137.03, -25.03], [136.68, -25.18], [136.57, -25.43], [137.0, -25.25], [137.53, -25.47], [137.75, -26.0], [137.65, -26.25], [137.75, -26.5], [137.53, -27.03], [137.18, -27.18], [137.03, -27.53], [136.5, -27.75], [135.97, -27.53], [135.82, -27.18], [135.75, -27.15], [135.5, -27.25], [134.97, -27.03], [134.82, -26.68], [134.47, -26.53], [134.25, -26.0], [134.35, -25.75], [134.25, -25.5], [134.35, -25.25], [134.32, -25.18], [133.97, -25.03], [133.82, -24.68], [133.47, -24.53], [133.25, -24.0], [133.46, -23.5], [133.25, -23.0], [133.47, -22.47]]]]}, "2015-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -22.47], [134.0, -22.25], [134.25, -22.35], [134.5, -22.25], [134.75, -22.35], [135.0, -22.25], [135.25, -22.35], [135.5, -22.25], [135.75, -22.35], [136.0, -22.25], [136.25, -22.35], [136.5, -22.25], [136.75, -22.35], [137.0, -22.25], [137.25, -22.35], [137.5, -22.25], [137.75, -22.35], [138.0, -22.25], [138.53, -22.47], [138.75, -23.0], [138.53, -23.53], [138.18, -23.68], [138.03, -24.03], [137.5, -24.25], [137.25, -24.15], [137.18, -24.18], [137.15, -24.25], [137.25, -24.5], [137.03, -25.03], [136.68, -25.18], [136.57, -25.43], [137.0, -25.25], [137.53, -25.47], [137.75, -26.0], [137.65, -26.25], [137.75, -26.5], [137.53, -27.03], [137.18, -27.18], [137.03, -27.53], [136.5, -27.75], [135.97, -27.53], [135.82, -27.18], [135.75, -27.15], [135.5, -27.25], [134.97, -27.03], [134.82, -26.68], [134.47, -26.53], [134.25, -26.0], [134.35, -25.75], [134.25, -25.5], [134.35, -25.25], [134.32, -25.18], [133.97, -25.03], [133.82, -24.68], [133.47, -24.53], [133.25, -24.0], [133.46, -23.5], [133.25, -23.0], [133.47, -22.47]]]]}, "2015-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -22.47], [134.0, -22.25], [134.25, -22.35], [134.5, -22.25], [134.75, -22.35], [135.0, -22.25], [135.25, -22.35], [135.5, -22.25], [135.75, -22.35], [136.0, -22.25], [136.25, -22.35], [136.5, -22.25], [136.75, -22.35], [137.0, -22.25], [137.25, -22.35], [137.5, -22.25], [137.75, -22.35], [138.0, -22.25], [138.53, -22.47], [138.75, -23.0], [138.53, -23.53], [138.18, -23.68], [138.03, -24.03], [137.5, -24.25], [137.25, -24.15], [137.18, -24.18], [137.15, -24.25], [137.25, -24.5], [137.03, -25.03], [136.68, -25.18], [136.57, -25.43], [137.0, -25.25], [137.53, -25.47], [137.75, -26.0], [137.65, -26.25], [137.75, -26.5], [137.53, -27.03], [137.18, -27.18], [137.03, -27.53], [136.5, -27.75], [135.97, -27.53], [135.82, -27.18], [135.75, -27.15], [135.5, -27.25], [134.97, -27.03], [134.82, -26.68], [134.47, -26.53], [134.25, -26.0], [134.35, -25.75], [134.25, -25.5], [134.35, -25.25], [134.32, -25.18], [133.97, -25.03], [133.82, -24.68], [133.47, -24.53], [133.25, -24.0], [133.46, -23.5], [133.25, -23.0], [133.47, -22.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.321229185161201}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.780075859592673}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.401196734789437, 11.578200321226063, 12.948260795649617]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.82152540043063, 9.736703388993703, 11.460388076381946]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.817957403748666, -5.492621084951834, -4.0296490900775215]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.798464091191249, -6.321229185161201, -4.657476784862013]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.530352489043685, -1.787614824315579, -1.2785802077777906]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8721966906159255, -1.9861279818880448, -1.4379390381789308]}}