{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:29.947377", "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-Oct-07_to_2023-Oct-10_127.0_-18.5"}, "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": 2023100000202}, "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": "October 07 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 10 2023"}, "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": 64493.06459922536}, "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": -18.5}, "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": 127.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "127.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 126.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 128.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[125.82, -17.82], [125.97, -17.47], [126.5, -17.25], [126.75, -17.35], [126.82, -17.32], [126.97, -16.97], [127.32, -16.82], [127.47, -16.47], [128.0, -16.25], [128.53, -16.47], [128.68, -16.82], [129.03, -16.97], [129.25, -17.5], [129.04, -18.0], [129.25, -18.5], [129.04, -19.0], [129.25, -19.5], [129.03, -20.03], [128.5, -20.25], [128.0, -20.04], [127.5, -20.25], [127.25, -20.15], [127.0, -20.25], [126.75, -20.15], [126.5, -20.25], [125.97, -20.03], [125.75, -19.5], [125.85, -19.25], [125.82, -19.18], [125.47, -19.03], [125.25, -18.5], [125.47, -17.97], [125.82, -17.82]]]]}}, "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": {"2023-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.47, -19.03], [125.25, -18.5], [125.47, -17.97], [125.82, -17.82], [125.97, -17.47], [126.5, -17.25], [126.75, -17.35], [126.82, -17.32], [126.97, -16.97], [127.32, -16.82], [127.47, -16.47], [128.0, -16.25], [128.53, -16.47], [128.68, -16.82], [129.03, -16.97], [129.25, -17.5], [129.04, -18.0], [129.25, -18.5], [129.04, -19.0], [129.25, -19.5], [129.03, -20.03], [128.5, -20.25], [128.0, -20.04], [127.5, -20.25], [127.25, -20.15], [127.0, -20.25], [126.75, -20.15], [126.5, -20.25], [125.97, -20.03], [125.75, -19.5], [125.85, -19.25], [125.82, -19.18], [125.47, -19.03]]]]}, "2023-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.47, -19.03], [125.25, -18.5], [125.47, -17.97], [125.82, -17.82], [125.97, -17.47], [126.5, -17.25], [126.75, -17.35], [126.82, -17.32], [126.97, -16.97], [127.32, -16.82], [127.47, -16.47], [128.0, -16.25], [128.53, -16.47], [128.68, -16.82], [129.03, -16.97], [129.25, -17.5], [129.04, -18.0], [129.25, -18.5], [129.04, -19.0], [129.25, -19.5], [129.03, -20.03], [128.5, -20.25], [128.0, -20.04], [127.5, -20.25], [127.25, -20.15], [127.0, -20.25], [126.75, -20.15], [126.5, -20.25], [125.97, -20.03], [125.75, -19.5], [125.85, -19.25], [125.82, -19.18], [125.47, -19.03]]]]}, "2023-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.47, -19.03], [125.25, -18.5], [125.47, -17.97], [125.82, -17.82], [125.97, -17.47], [126.5, -17.25], [126.75, -17.35], [126.82, -17.32], [126.97, -16.97], [127.32, -16.82], [127.47, -16.47], [128.0, -16.25], [128.53, -16.47], [128.68, -16.82], [129.03, -16.97], [129.25, -17.5], [129.04, -18.0], [129.25, -18.5], [129.04, -19.0], [129.25, -19.5], [129.03, -20.03], [128.5, -20.25], [128.0, -20.04], [127.5, -20.25], [127.25, -20.15], [127.0, -20.25], [126.75, -20.15], [126.5, -20.25], [125.97, -20.03], [125.75, -19.5], [125.85, -19.25], [125.82, -19.18], [125.47, -19.03]]]]}, "2023-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.5, -19.25], [125.97, -19.03], [125.75, -18.5], [125.97, -17.97], [126.5, -17.75], [126.75, -17.85], [127.0, -17.75], [127.53, -17.97], [127.75, -18.5], [127.53, -19.03], [127.0, -19.25], [126.75, -19.15], [126.5, -19.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.886318878085149}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.6312557349970254}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.524067656337365, 26.22232308196169, 26.81947870915519, 28.135185943853458]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.718428736419582, 25.18633593138111, 25.767675173605994, 27.992092949096218]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.5697706576033, -3.9754148011493244, -3.4525168388623695, -2.4879697161339323]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.886318878085149, -4.5117891546193505, -3.9498015646611293, -2.5146946408042368]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6056745478592327, -1.842185623980772, -1.5883962002926983, -1.28767821397286]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8689646344504363, -2.080512028077139, -1.8999106133734667, -1.292479098453778]}}