{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:37.712252", "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-07_to_2017-Apr-10_124.5_-32.0"}, "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": 2017040000244}, "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 07 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 10 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 84429.17910275549}, "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", "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": -32.0}, "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": 124.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "124.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 125.25}, "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": -29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.75, -31.5], [120.85, -31.25], [120.75, -31.0], [120.85, -30.75], [120.75, -30.5], [120.97, -29.97], [121.5, -29.75], [121.75, -29.85], [122.0, -29.75], [122.5, -29.96], [123.0, -29.75], [123.25, -29.85], [123.5, -29.75], [124.03, -29.97], [124.18, -30.32], [124.53, -30.47], [124.68, -30.82], [124.75, -30.85], [125.0, -30.75], [125.53, -30.97], [125.75, -31.5], [125.65, -31.75], [125.75, -32.0], [125.53, -32.53], [125.0, -32.75], [124.75, -32.65], [124.68, -32.68], [124.53, -33.03], [124.0, -33.25], [123.47, -33.03], [123.32, -32.68], [123.25, -32.65], [123.0, -32.75], [122.75, -32.65], [122.68, -32.68], [122.53, -33.03], [122.0, -33.25], [121.75, -33.15], [121.5, -33.25], [121.25, -33.15], [121.0, -33.25], [120.47, -33.03], [120.25, -32.5], [120.47, -31.97], [120.82, -31.82], [120.85, -31.75], [120.75, -31.5]]]]}, "2017-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.75, -31.5], [120.85, -31.25], [120.75, -31.0], [120.85, -30.75], [120.75, -30.5], [120.97, -29.97], [121.5, -29.75], [121.75, -29.85], [122.0, -29.75], [122.3, -29.87], [122.35, -29.75], [122.25, -29.5], [122.47, -28.97], [123.0, -28.75], [123.53, -28.97], [123.68, -29.32], [124.03, -29.47], [124.25, -30.0], [124.15, -30.25], [124.18, -30.32], [124.53, -30.47], [124.68, -30.82], [124.75, -30.85], [125.0, -30.75], [125.53, -30.97], [125.75, -31.5], [125.65, -31.75], [125.75, -32.0], [125.53, -32.53], [125.0, -32.75], [124.75, -32.65], [124.68, -32.68], [124.53, -33.03], [124.0, -33.25], [123.47, -33.03], [123.32, -32.68], [123.25, -32.65], [123.0, -32.75], [122.75, -32.65], [122.68, -32.68], [122.53, -33.03], [122.0, -33.25], [121.75, -33.15], [121.5, -33.25], [121.25, -33.15], [121.0, -33.25], [120.47, -33.03], [120.25, -32.5], [120.47, -31.97], [120.82, -31.82], [120.85, -31.75], [120.75, -31.5]]]]}, "2017-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.75, -31.5], [120.85, -31.25], [120.75, -31.0], [120.85, -30.75], [120.75, -30.5], [120.97, -29.97], [121.5, -29.75], [121.75, -29.85], [122.0, -29.75], [122.3, -29.87], [122.35, -29.75], [122.25, -29.5], [122.47, -28.97], [123.0, -28.75], [123.53, -28.97], [123.68, -29.32], [124.03, -29.47], [124.25, -30.0], [124.15, -30.25], [124.18, -30.32], [124.53, -30.47], [124.68, -30.82], [124.75, -30.85], [125.0, -30.75], [125.53, -30.97], [125.75, -31.5], [125.65, -31.75], [125.75, -32.0], [125.53, -32.53], [125.0, -32.75], [124.75, -32.65], [124.68, -32.68], [124.53, -33.03], [124.0, -33.25], [123.47, -33.03], [123.32, -32.68], [123.25, -32.65], [123.0, -32.75], [122.75, -32.65], [122.68, -32.68], [122.53, -33.03], [122.0, -33.25], [121.75, -33.15], [121.5, -33.25], [121.25, -33.15], [121.0, -33.25], [120.47, -33.03], [120.25, -32.5], [120.47, -31.97], [120.82, -31.82], [120.85, -31.75], [120.75, -31.5]]]]}, "2017-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.35, -31.25], [122.25, -31.0], [122.46, -30.5], [122.25, -30.0], [122.35, -29.75], [122.25, -29.5], [122.47, -28.97], [123.0, -28.75], [123.53, -28.97], [123.68, -29.32], [124.03, -29.47], [124.25, -30.0], [124.15, -30.25], [124.18, -30.32], [124.53, -30.47], [124.68, -30.82], [125.03, -30.97], [125.18, -31.32], [125.53, -31.47], [125.75, -32.0], [125.53, -32.53], [125.0, -32.75], [124.75, -32.65], [124.68, -32.68], [124.53, -33.03], [124.0, -33.25], [123.47, -33.03], [123.32, -32.68], [123.25, -32.65], [123.0, -32.75], [122.47, -32.53], [122.25, -32.0], [122.35, -31.75], [122.25, -31.5], [122.35, -31.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.499759447955171}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.560108122659728}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.791868344935608, 14.998688550654606, 15.105599739592265, 15.188816419538057]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.052056499413368, 14.211175746521121, 14.135113075731397, 14.60035384461952]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.714106802077575, -4.639226386255542, -4.431255916746432, -4.391021325662193]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.499759447955171, -5.698239866044162, -4.871572524107194, -4.681416718574269]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4559388092986847, -1.4043996278164141, -1.3805292887466325, -1.353590338853786]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9536344489895756, -1.5956534200031955, -1.5816102893794346, -1.4852390653513752]}}