{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:33.964683", "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-Nov-26_to_2021-Nov-28_149.5_-36.0"}, "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": 2021110000854}, "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 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 28 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": 66338.11770453917}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": -36.0}, "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": 149.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 151.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -36.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -32.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[149.0, -33.75], [149.25, -33.85], [149.32, -33.82], [149.35, -33.75], [149.25, -33.5], [149.47, -32.97], [149.82, -32.82], [149.85, -32.75], [149.75, -32.5], [149.85, -32.25], [149.75, -32.0], [149.97, -31.47], [150.5, -31.25], [150.75, -31.35], [151.0, -31.25], [151.53, -31.47], [151.75, -32.0], [151.65, -32.25], [151.75, -32.5], [151.65, -32.75], [151.75, -33.0], [151.65, -33.25], [151.75, -33.5], [151.53, -34.03], [151.18, -34.18], [151.15, -34.25], [151.25, -34.5], [151.15, -34.75], [151.25, -35.0], [151.15, -35.25], [151.25, -35.5], [151.03, -36.03], [150.68, -36.18], [150.65, -36.25], [150.75, -36.5], [150.53, -37.03], [150.0, -37.25], [149.75, -37.15], [149.5, -37.25], [148.97, -37.03], [148.75, -36.5], [148.85, -36.25], [148.75, -36.0], [148.85, -35.75], [148.82, -35.68], [148.47, -35.53], [148.25, -35.0], [148.35, -34.75], [148.25, -34.5], [148.47, -33.97], [149.0, -33.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Australia", "S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.25, -34.5], [148.47, -33.97], [149.0, -33.75], [149.25, -33.85], [149.32, -33.82], [149.35, -33.75], [149.25, -33.5], [149.47, -32.97], [149.82, -32.82], [149.85, -32.75], [149.75, -32.5], [149.85, -32.25], [149.75, -32.0], [149.97, -31.47], [150.5, -31.25], [150.75, -31.35], [151.0, -31.25], [151.53, -31.47], [151.75, -32.0], [151.65, -32.25], [151.75, -32.5], [151.65, -32.75], [151.75, -33.0], [151.65, -33.25], [151.75, -33.5], [151.53, -34.03], [151.18, -34.18], [151.15, -34.25], [151.25, -34.5], [151.15, -34.75], [151.25, -35.0], [151.15, -35.25], [151.25, -35.5], [151.03, -36.03], [150.68, -36.18], [150.65, -36.25], [150.75, -36.5], [150.53, -37.03], [150.0, -37.25], [149.75, -37.15], [149.5, -37.25], [148.97, -37.03], [148.75, -36.5], [148.85, -36.25], [148.75, -36.0], [148.85, -35.75], [148.82, -35.68], [148.47, -35.53], [148.25, -35.0], [148.35, -34.75], [148.25, -34.5]]]]}, "2021-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.25, -34.5], [148.47, -33.97], [149.0, -33.75], [149.25, -33.85], [149.32, -33.82], [149.35, -33.75], [149.25, -33.5], [149.47, -32.97], [149.82, -32.82], [149.85, -32.75], [149.75, -32.5], [149.85, -32.25], [149.75, -32.0], [149.97, -31.47], [150.5, -31.25], [150.75, -31.35], [151.0, -31.25], [151.53, -31.47], [151.75, -32.0], [151.65, -32.25], [151.75, -32.5], [151.65, -32.75], [151.75, -33.0], [151.65, -33.25], [151.75, -33.5], [151.53, -34.03], [151.18, -34.18], [151.15, -34.25], [151.25, -34.5], [151.15, -34.75], [151.25, -35.0], [151.15, -35.25], [151.25, -35.5], [151.03, -36.03], [150.68, -36.18], [150.65, -36.25], [150.75, -36.5], [150.53, -37.03], [150.0, -37.25], [149.75, -37.15], [149.5, -37.25], [148.97, -37.03], [148.75, -36.5], [148.85, -36.25], [148.75, -36.0], [148.85, -35.75], [148.82, -35.68], [148.47, -35.53], [148.25, -35.0], [148.35, -34.75], [148.25, -34.5]]]]}, "2021-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.25, -34.5], [148.47, -33.97], [149.0, -33.75], [149.25, -33.85], [149.32, -33.82], [149.35, -33.75], [149.25, -33.5], [149.47, -32.97], [149.82, -32.82], [149.85, -32.75], [149.75, -32.5], [149.85, -32.25], [149.75, -32.0], [149.97, -31.47], [150.5, -31.25], [150.75, -31.35], [151.0, -31.25], [151.53, -31.47], [151.75, -32.0], [151.65, -32.25], [151.75, -32.5], [151.65, -32.75], [151.75, -33.0], [151.65, -33.25], [151.75, -33.5], [151.53, -34.03], [151.18, -34.18], [151.15, -34.25], [151.25, -34.5], [151.15, -34.75], [151.25, -35.0], [151.15, -35.25], [151.25, -35.5], [151.03, -36.03], [150.68, -36.18], [150.65, -36.25], [150.75, -36.5], [150.53, -37.03], [150.0, -37.25], [149.75, -37.15], [149.5, -37.25], [148.97, -37.03], [148.75, -36.5], [148.85, -36.25], [148.75, -36.0], [148.85, -35.75], [148.82, -35.68], [148.47, -35.53], [148.25, -35.0], [148.35, -34.75], [148.25, -34.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.249965381926472}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.586018031314147}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.692838267148545, 12.203124747299682, 13.21253450123021]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.8106128459184, 8.846379166771271, 10.86824346366592]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.377833311662927, -6.089844760293645, -5.2903760219858675]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.706088283579788, -7.249965381926472, -6.500558437893062]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5121411117711057, -1.7447968011307866, -1.4765932828206019]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8961561627453802, -1.9842420609391263, -1.6422140078696574]}}