{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:04.933859", "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": "2023-Feb-20_to_2023-Feb-24_149.0_-22.0"}, "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": 2023020000791}, "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": "February 20 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 24 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 80228.5403351247}, "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": ["Coral Sea"]}, "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": -22.0}, "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": 149.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "149.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 147.5}, "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": -24.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[151.15, -23.75], [151.18, -23.82], [151.53, -23.97], [151.75, -24.5], [151.53, -25.03], [151.0, -25.25], [150.75, -25.15], [150.5, -25.25], [149.97, -25.03], [149.82, -24.68], [149.47, -24.53], [149.25, -24.0], [149.35, -23.75], [149.25, -23.5], [149.35, -23.25], [149.25, -23.0], [149.35, -22.75], [149.32, -22.68], [149.25, -22.65], [149.0, -22.75], [148.75, -22.65], [148.5, -22.75], [148.25, -22.65], [148.0, -22.75], [147.47, -22.53], [147.32, -22.18], [146.97, -22.03], [146.75, -21.5], [146.97, -20.97], [147.5, -20.75], [147.75, -20.85], [147.82, -20.82], [147.85, -20.75], [147.75, -20.5], [147.85, -20.25], [147.75, -20.0], [147.97, -19.47], [148.5, -19.25], [149.03, -19.47], [149.18, -19.82], [149.25, -19.85], [149.5, -19.75], [150.03, -19.97], [150.18, -20.32], [150.25, -20.35], [150.5, -20.25], [151.03, -20.47], [151.25, -21.0], [151.03, -21.53], [150.68, -21.68], [150.54, -22.0], [150.68, -22.32], [151.03, -22.47], [151.25, -23.0], [151.15, -23.25], [151.25, -23.5], [151.15, -23.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "E.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.97, -22.03], [146.75, -21.5], [146.97, -20.97], [147.5, -20.75], [147.75, -20.85], [147.82, -20.82], [147.85, -20.75], [147.75, -20.5], [147.97, -19.97], [148.5, -19.75], [149.03, -19.97], [149.25, -20.5], [149.15, -20.75], [149.18, -20.82], [149.53, -20.97], [149.75, -21.5], [149.65, -21.75], [149.75, -22.0], [149.53, -22.53], [149.0, -22.75], [148.75, -22.65], [148.5, -22.75], [148.25, -22.65], [148.0, -22.75], [147.47, -22.53], [147.32, -22.18], [146.97, -22.03]]]]}, "2023-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.97, -22.03], [146.75, -21.5], [146.97, -20.97], [147.5, -20.75], [147.75, -20.85], [147.82, -20.82], [147.85, -20.75], [147.75, -20.5], [147.85, -20.25], [147.75, -20.0], [147.97, -19.47], [148.5, 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-20.0], [147.97, -19.47], [148.5, -19.25], [149.03, -19.47], [149.18, -19.82], [149.25, -19.85], [149.5, -19.75], [150.03, -19.97], [150.18, -20.32], [150.25, -20.35], [150.5, -20.25], [151.03, -20.47], [151.25, -21.0], [151.03, -21.53], [150.68, -21.68], [150.54, -22.0], [150.68, -22.32], [151.03, -22.47], [151.25, -23.0], [151.15, -23.25], [151.25, -23.5], [151.15, -23.75], [151.18, -23.82], [151.53, -23.97], [151.75, -24.5], [151.53, -25.03], [151.0, -25.25], [150.75, -25.15], [150.5, -25.25], [149.97, -25.03], [149.82, -24.68], [149.47, -24.53], [149.25, -24.0], [149.35, -23.75], [149.25, -23.5], [149.35, -23.25], [149.25, -23.0], [149.35, -22.75], [149.32, -22.68], [149.25, -22.65], [149.0, -22.75], [148.47, -22.53], [148.25, -22.0], [148.46, -21.5], [148.25, -21.0], [148.35, -20.75], [148.32, -20.68], [147.97, -20.53]]]]}, "2023-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.97, -22.97], [150.5, -22.75], [151.03, -22.97], [151.25, -23.5], [151.03, -24.03], [150.5, -24.25], [149.97, -24.03], [149.75, -23.5], [149.97, -22.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.397420356056898}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1732213141320194}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.575425366914885, 23.79078039386019, 24.234156449688726, 24.47752486356478, 24.704806404450892]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.04929170368166, 20.51224204044553, 21.711856488968294, 20.98097966277652, 24.704806404450892]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4970999455592655, -2.5176285092231865, -2.0072880375599493, -1.8122436188282678, -1.480597818827107]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3565923004258593, -4.397420356056898, -2.709872781192473, -2.8729651416807656, -1.480597818827107]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4901511837968617, -1.8454143260112519, -1.6019763720138052, -1.5690132887535264, -1.2352759024811328]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.632012466133039, -2.6188083127000112, -2.218898930227318, -1.811016249129568, -1.2352759024811328]}}