{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:12:51.911595", "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-Aug-24_to_2021-Aug-26_135.0_-22.5"}, "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": 2021080001056}, "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": "August 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 26 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": 88890.00121537024}, "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": -22.5}, "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": 135.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "135.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 132.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 137.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[131.75, -20.5], [131.97, -19.97], [132.5, -19.75], [132.75, -19.85], [133.0, -19.75], [133.53, -19.97], [133.68, -20.32], [133.75, -20.35], [134.0, -20.25], [134.25, -20.35], [134.5, -20.25], [135.03, -20.47], [135.18, -20.82], [135.3, -20.87], [135.47, -20.47], [136.0, -20.25], [136.53, -20.47], [136.75, -21.0], [136.65, -21.25], [136.68, -21.32], [136.75, -21.35], [137.0, -21.25], [137.53, -21.47], [137.75, -22.0], [137.65, -22.25], [137.75, -22.5], [137.53, -23.03], [137.18, -23.18], [137.03, -23.53], [136.5, -23.75], [136.25, -23.65], [136.0, -23.75], [135.75, -23.65], [135.5, -23.75], [134.97, -23.53], [134.82, -23.18], [134.75, -23.15], [134.5, -23.25], [134.25, -23.15], [134.0, -23.25], [133.75, -23.15], [133.5, -23.25], [132.97, -23.03], [132.82, -22.68], [132.47, -22.53], [132.25, -22.0], [132.47, -21.47], [132.82, -21.32], [132.85, -21.25], [132.82, -21.18], [132.75, -21.15], [132.5, -21.25], [131.97, -21.03], [131.75, -20.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.5, -21.25], [131.97, -21.03], [131.75, -20.5], [131.97, -19.97], [132.5, -19.75], [132.75, -19.85], [133.0, -19.75], [133.53, -19.97], [133.68, -20.32], [133.75, -20.35], [134.0, -20.25], [134.25, -20.35], [134.5, -20.25], [135.03, -20.47], [135.18, -20.82], [135.3, -20.87], [135.47, -20.47], [136.0, -20.25], [136.53, -20.47], [136.75, -21.0], [136.65, -21.25], [136.68, -21.32], [136.75, -21.35], [137.0, -21.25], [137.53, -21.47], [137.75, -22.0], [137.65, -22.25], [137.75, -22.5], [137.53, -23.03], [137.18, -23.18], [137.03, -23.53], [136.5, -23.75], [136.25, -23.65], [136.0, -23.75], [135.75, -23.65], [135.5, -23.75], [134.97, -23.53], [134.82, -23.18], [134.75, -23.15], [134.5, -23.25], [134.25, -23.15], [134.0, -23.25], [133.75, -23.15], [133.5, -23.25], [132.97, -23.03], [132.82, -22.68], [132.47, -22.53], [132.25, -22.0], [132.47, -21.47], [132.82, -21.32], [132.85, -21.25], [132.82, -21.18], [132.75, -21.15], [132.5, -21.25]]]]}, "2021-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.5, -21.25], [131.97, -21.03], [131.75, -20.5], [131.97, -19.97], [132.5, -19.75], [132.75, -19.85], [133.0, -19.75], [133.53, -19.97], [133.68, -20.32], [133.75, -20.35], [134.0, -20.25], [134.25, -20.35], [134.5, -20.25], [135.03, -20.47], [135.18, -20.82], [135.3, -20.87], [135.47, -20.47], [136.0, -20.25], [136.53, -20.47], [136.75, -21.0], [136.65, -21.25], [136.68, -21.32], [136.75, -21.35], [137.0, -21.25], [137.53, -21.47], [137.75, -22.0], [137.65, -22.25], [137.75, -22.5], [137.53, -23.03], [137.18, -23.18], [137.03, -23.53], [136.5, -23.75], [136.25, -23.65], [136.0, -23.75], [135.75, -23.65], [135.5, -23.75], [134.97, -23.53], [134.82, -23.18], [134.75, -23.15], [134.5, -23.25], [134.25, -23.15], [134.0, -23.25], [133.75, -23.15], [133.5, -23.25], [132.97, -23.03], [132.82, -22.68], [132.47, -22.53], [132.25, -22.0], [132.47, -21.47], [132.82, -21.32], [132.85, -21.25], [132.82, -21.18], [132.75, -21.15], [132.5, -21.25]]]]}, "2021-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.5, -21.25], [131.97, -21.03], [131.75, -20.5], [131.97, -19.97], [132.5, -19.75], [132.75, -19.85], [133.0, -19.75], [133.53, -19.97], [133.68, -20.32], [133.75, -20.35], [134.0, -20.25], [134.25, -20.35], [134.5, -20.25], [135.03, -20.47], [135.18, -20.82], [135.3, -20.87], [135.47, -20.47], [136.0, -20.25], [136.53, -20.47], [136.75, -21.0], [136.65, -21.25], [136.68, -21.32], [136.75, -21.35], [137.0, -21.25], [137.53, -21.47], [137.75, -22.0], [137.65, -22.25], [137.75, -22.5], [137.53, -23.03], [137.18, -23.18], [137.03, -23.53], [136.5, -23.75], [136.25, -23.65], [136.0, -23.75], [135.75, -23.65], [135.5, -23.75], [134.97, -23.53], [134.82, -23.18], [134.75, -23.15], [134.5, -23.25], [134.25, -23.15], [134.0, -23.25], [133.75, -23.15], [133.5, -23.25], [132.97, -23.03], [132.82, -22.68], [132.47, -22.53], [132.25, -22.0], [132.47, -21.47], [132.82, -21.32], [132.85, -21.25], [132.82, -21.18], [132.75, -21.15], [132.5, -21.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.183691162718048}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.276737838547449}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.129747364670209, 12.741857983477587, 14.523935958957793]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.215616778944081, 10.230089335633409, 12.792908691624689]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.456784040053631, -6.008396215705551, -4.365033259883165]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.091652053706525, -7.183691162718048, -4.774478798628877]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5599698139667835, -1.730580108766228, -1.2832152663367813]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6981761284486512, -1.9375152368743043, -1.3345093716454877]}}