{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:27.964537", "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": "2026-Apr-11_to_2026-Apr-13_136.0_-32.5"}, "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": 2026040000344}, "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 11 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 13 2026"}, "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": 52468.637561697826}, "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": -32.5}, "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": 136.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "136.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 134.25}, "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": -32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.97, -30.97], [134.5, -30.75], [134.75, -30.85], [134.82, -30.82], [134.97, -30.47], [135.5, -30.25], [135.75, -30.35], [136.0, -30.25], [136.53, -30.47], [136.68, -30.82], [136.75, -30.85], [137.0, -30.75], [137.25, -30.85], [137.5, -30.75], [138.03, -30.97], [138.25, -31.5], [138.15, -31.75], [138.25, -32.0], [138.15, -32.25], [138.25, -32.5], [138.03, -33.03], [137.5, -33.25], [137.25, -33.15], [137.0, -33.25], [136.75, -33.15], [136.5, -33.25], [136.25, -33.15], [136.0, -33.25], [135.75, -33.15], [135.5, -33.25], [135.25, -33.15], [135.0, -33.25], [134.47, -33.03], [134.32, -32.68], [133.97, -32.53], [133.75, -32.0], [133.85, -31.75], [133.75, -31.5], [133.97, -30.97]]]]}, "2026-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.97, -30.97], [134.5, -30.75], [134.75, -30.85], [134.82, -30.82], [134.97, -30.47], [135.5, -30.25], [135.75, -30.35], [136.0, -30.25], [136.53, -30.47], [136.68, -30.82], [136.75, -30.85], [137.0, -30.75], [137.25, -30.85], [137.5, -30.75], [138.03, -30.97], [138.25, -31.5], [138.15, -31.75], [138.25, -32.0], [138.15, -32.25], [138.25, -32.5], [138.03, -33.03], [137.5, -33.25], [137.25, -33.15], [137.0, -33.25], [136.75, -33.15], [136.5, -33.25], [136.25, -33.15], [136.0, -33.25], [135.75, -33.15], [135.5, -33.25], [135.25, -33.15], [135.0, -33.25], [134.47, -33.03], [134.32, -32.68], [133.97, -32.53], [133.75, -32.0], [133.85, -31.75], [133.75, -31.5], [133.97, -30.97]]]]}, "2026-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.97, -30.97], [134.5, -30.75], [134.75, -30.85], [134.82, -30.82], [134.97, -30.47], [135.5, -30.25], [135.75, -30.35], [136.0, -30.25], [136.53, -30.47], [136.68, -30.82], [136.75, -30.85], [137.0, -30.75], [137.25, -30.85], [137.5, -30.75], [138.03, -30.97], [138.25, -31.5], [138.15, -31.75], [138.25, -32.0], [138.15, -32.25], [138.25, -32.5], [138.03, -33.03], [137.5, -33.25], [137.25, -33.15], [137.0, -33.25], [136.75, -33.15], [136.5, -33.25], [136.25, -33.15], [136.0, -33.25], [135.75, -33.15], [135.5, -33.25], [135.25, -33.15], [135.0, -33.25], [134.47, -33.03], [134.32, -32.68], [133.97, -32.53], [133.75, -32.0], [133.85, -31.75], [133.75, -31.5], [133.97, -30.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.554483303189784}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.359555320385467}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.616476440429722, 14.93815892537441, 14.880451456705828]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.12311706542971, 13.990181223551474, 13.56166483561202]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.686289699596915, -4.239368346771937, -4.1530079147875485]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.554483303189784, -5.076100986636106, -4.769661017533906]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3690458211524685, -1.2906591711017636, -1.3354526194293803]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6349941516762991, -1.4665660096635156, -1.5682478004430873]}}