{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:31.875144", "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": "2018-Nov-26_to_2018-Nov-28_138.0_-31.5"}, "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": 2018110000814}, "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": "November 26 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 28 2018"}, "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": 52708.93320781692}, "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": ["S.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": -31.5}, "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": 138.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "138.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 134.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 138.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.75, -31.5], [134.85, -31.25], [134.75, -31.0], [134.97, -30.47], [135.5, -30.25], [135.75, -30.35], [135.82, -30.32], [135.97, -29.97], [136.5, -29.75], [136.75, -29.85], [137.0, -29.75], [137.53, -29.97], [137.68, -30.32], [138.03, -30.47], [138.18, -30.82], [138.25, -30.85], [138.5, -30.75], [139.03, -30.97], [139.25, -31.5], [139.03, -32.03], [138.5, -32.25], [138.25, -32.15], [138.18, -32.18], [138.03, -32.53], [137.5, -32.75], [137.25, -32.65], [137.0, -32.75], [136.75, -32.65], [136.68, -32.68], [136.53, -33.03], [136.0, -33.25], [135.5, -33.04], [135.0, -33.25], [134.47, -33.03], [134.25, -32.5], [134.47, -31.97], [134.82, -31.82], [134.85, -31.75], [134.75, -31.5]]]]}, "2018-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.75, -31.5], [134.85, -31.25], [134.75, -31.0], [134.97, -30.47], [135.5, -30.25], [135.75, -30.35], [135.82, -30.32], [135.97, -29.97], [136.5, -29.75], [136.75, -29.85], [137.0, -29.75], [137.53, -29.97], [137.68, -30.32], [138.03, -30.47], [138.18, -30.82], [138.25, -30.85], [138.5, -30.75], [139.03, -30.97], [139.25, -31.5], [139.03, -32.03], [138.5, -32.25], [138.25, -32.15], [138.18, -32.18], [138.03, -32.53], [137.5, -32.75], [137.25, -32.65], [137.0, -32.75], [136.75, -32.65], [136.68, -32.68], [136.53, -33.03], [136.0, -33.25], [135.5, -33.04], [135.0, -33.25], [134.47, -33.03], [134.25, -32.5], [134.47, -31.97], [134.82, -31.82], [134.85, -31.75], [134.75, -31.5]]]]}, "2018-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.75, -31.5], [134.85, -31.25], [134.75, -31.0], [134.97, -30.47], [135.5, -30.25], [135.75, -30.35], [135.82, -30.32], [135.97, -29.97], [136.5, -29.75], [136.75, -29.85], [137.0, -29.75], [137.53, -29.97], [137.68, -30.32], [138.03, -30.47], [138.18, -30.82], [138.25, -30.85], [138.5, -30.75], [139.03, -30.97], [139.25, -31.5], [139.03, -32.03], [138.5, -32.25], [138.25, -32.15], [138.18, -32.18], [138.03, -32.53], [137.5, -32.75], [137.25, -32.65], [137.0, -32.75], [136.75, -32.65], [136.68, -32.68], [136.53, -33.03], [136.0, -33.25], [135.5, -33.04], [135.0, -33.25], [134.47, -33.03], [134.25, -32.5], [134.47, -31.97], [134.82, -31.82], [134.85, -31.75], [134.75, -31.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.883366443283023}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.6668227418387}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.77686437459903, 16.825245977073507, 18.11665163294259]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.866128457167008, 14.958467056365464, 16.150429389207886]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.306524082908362, -7.4759974580709265, -6.21794668453681]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.844810997987963, -8.883366443283023, -6.902865905270346]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4247334912870784, -1.644804151688049, -1.3610646662717094]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6073948128087845, -1.9149155905629036, -1.5244632718180673]}}