{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:38.005252", "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": "2017-Apr-10_to_2017-Apr-12_135.0_-24.0"}, "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": 2017040000324}, "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": "April 10 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 12 2017"}, "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": 50109.80167569169}, "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": -24.0}, "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": 135.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "135.0\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": 137.75}, "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": -23.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -24.47], [134.0, -24.25], [134.25, -24.35], [134.32, -24.32], [134.35, -24.25], [134.25, -24.0], [134.47, -23.47], [135.0, -23.25], [135.53, -23.47], [135.75, -24.0], [135.65, -24.25], [135.75, -24.5], [135.63, -24.8], [135.75, -24.85], [136.0, -24.75], [136.5, -24.96], [137.0, -24.75], [137.53, -24.97], [137.68, -25.32], [138.03, -25.47], [138.25, -26.0], [138.03, -26.53], [137.63, -26.7], [137.75, -27.0], [137.53, -27.53], [137.0, -27.75], [136.75, -27.65], [136.5, -27.75], [135.97, -27.53], [135.8, -27.12], [135.5, -27.25], [134.97, -27.03], [134.82, -26.68], [134.75, -26.65], [134.5, -26.75], [133.97, -26.53], [133.82, -26.18], [133.47, -26.03], [133.25, -25.5], [133.35, -25.25], [133.25, -25.0], [133.47, -24.47]]]]}, "2017-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -24.47], [134.0, -24.25], [134.25, -24.35], [134.32, -24.32], [134.35, -24.25], [134.25, -24.0], [134.47, -23.47], [135.0, -23.25], [135.53, -23.47], [135.75, -24.0], [135.65, -24.25], [135.75, -24.5], [135.63, -24.8], [135.75, -24.85], [136.0, -24.75], [136.5, -24.96], [137.0, -24.75], [137.53, -24.97], [137.68, -25.32], [138.03, -25.47], [138.25, -26.0], [138.03, -26.53], [137.63, -26.7], [137.75, -27.0], [137.53, -27.53], [137.0, -27.75], [136.75, -27.65], [136.5, -27.75], [135.97, -27.53], [135.8, -27.12], [135.5, -27.25], [134.97, -27.03], [134.82, -26.68], [134.75, -26.65], [134.5, -26.75], [133.97, -26.53], [133.82, -26.18], [133.47, -26.03], [133.25, -25.5], [133.35, -25.25], [133.25, -25.0], [133.47, -24.47]]]]}, "2017-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -24.47], [134.0, -24.25], [134.25, -24.35], [134.32, -24.32], [134.35, -24.25], [134.25, -24.0], [134.47, -23.47], [135.0, -23.25], [135.53, -23.47], [135.75, -24.0], [135.65, -24.25], [135.75, -24.5], [135.63, -24.8], [135.75, -24.85], [136.0, -24.75], [136.5, -24.96], [137.0, -24.75], [137.53, -24.97], [137.68, -25.32], [138.03, -25.47], [138.25, -26.0], [138.03, -26.53], [137.63, -26.7], [137.75, -27.0], [137.53, -27.53], [137.0, -27.75], [136.75, -27.65], [136.5, -27.75], [135.97, -27.53], [135.8, -27.12], [135.5, -27.25], [134.97, -27.03], [134.82, -26.68], [134.75, -26.65], [134.5, -26.75], [133.97, -26.53], [133.82, -26.18], [133.47, -26.03], [133.25, -25.5], [133.35, -25.25], [133.25, -25.0], [133.47, -24.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.209197231295718}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.742437156250637}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.121463336114914, 17.613337912204543, 18.689841485567683]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.362142594990587, 16.721164733077728, 17.975446880844117]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.633095568398791, -5.9105065412509346, -4.683709359102185]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.209197231295718, -6.463457194621583, -5.025861829773305]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7644778244924026, -1.6175854873477258, -1.3245728771367433]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9108158613895838, -1.7784661960119819, -1.4043908091137762]}}