{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:50.182415", "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": "2022-Jun-09_to_2022-Jun-11_132.5_-29.0"}, "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": 2022060000450}, "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": "June 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 11 2022"}, "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": 59654.89650927755}, "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": -29.0}, "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": 132.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "132.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 131.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 134.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[130.25, -28.0], [130.47, -27.47], [131.0, -27.25], [131.25, -27.35], [131.32, -27.32], [131.35, -27.25], [131.25, -27.0], [131.47, -26.47], [132.0, -26.25], [132.53, -26.47], [132.75, -27.0], [132.65, -27.25], [132.68, -27.32], [133.03, -27.47], [133.18, -27.82], [133.25, -27.85], [133.5, -27.75], [133.75, -27.85], [134.0, -27.75], [134.53, -27.97], [134.68, -28.32], [135.03, -28.47], [135.25, -29.0], [135.03, -29.53], [134.5, -29.75], [134.25, -29.65], [134.0, -29.75], [133.75, -29.65], [133.68, -29.68], [133.53, -30.03], [133.0, -30.25], [132.75, -30.15], [132.68, -30.18], [132.53, -30.53], [132.0, -30.75], [131.47, -30.53], [131.32, -30.18], [130.97, -30.03], [130.75, -29.5], [130.97, -28.97], [131.32, -28.82], [131.35, -28.75], [131.32, -28.68], [131.25, -28.65], [131.0, -28.75], [130.47, -28.53], [130.25, -28.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia", "S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.0, -28.75], [130.47, -28.53], [130.25, -28.0], [130.47, -27.47], [131.0, -27.25], [131.25, -27.35], [131.32, -27.32], [131.35, -27.25], [131.25, -27.0], [131.47, -26.47], [132.0, -26.25], [132.53, -26.47], [132.75, -27.0], [132.65, -27.25], [132.68, -27.32], [133.03, -27.47], [133.18, -27.82], [133.25, -27.85], [133.5, -27.75], [133.75, -27.85], [134.0, -27.75], [134.53, -27.97], [134.68, -28.32], [135.03, -28.47], [135.25, -29.0], [135.03, -29.53], [134.5, -29.75], [134.25, -29.65], [134.0, -29.75], [133.75, -29.65], [133.68, -29.68], [133.53, -30.03], [133.0, -30.25], [132.75, -30.15], [132.68, -30.18], [132.53, -30.53], [132.0, -30.75], [131.47, -30.53], [131.32, -30.18], [130.97, -30.03], [130.75, -29.5], [130.97, -28.97], [131.32, -28.82], [131.35, -28.75], [131.32, -28.68], [131.25, -28.65], [131.0, -28.75]]]]}, "2022-06-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.0, -28.75], [130.47, -28.53], [130.25, -28.0], [130.47, -27.47], [131.0, -27.25], [131.25, -27.35], [131.32, -27.32], [131.35, -27.25], [131.25, -27.0], [131.47, -26.47], [132.0, -26.25], [132.53, -26.47], [132.75, -27.0], [132.65, -27.25], [132.68, -27.32], [133.03, -27.47], [133.18, -27.82], [133.25, -27.85], [133.5, -27.75], [133.75, -27.85], [134.0, -27.75], [134.53, -27.97], [134.68, -28.32], [135.03, -28.47], [135.25, -29.0], [135.03, -29.53], [134.5, -29.75], [134.25, -29.65], [134.0, -29.75], [133.75, -29.65], [133.68, -29.68], [133.53, -30.03], [133.0, -30.25], [132.75, -30.15], [132.68, -30.18], [132.53, -30.53], [132.0, -30.75], [131.47, -30.53], [131.32, -30.18], [130.97, -30.03], [130.75, -29.5], [130.97, -28.97], [131.32, -28.82], [131.35, -28.75], [131.32, -28.68], [131.25, -28.65], [131.0, -28.75]]]]}, "2022-06-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.0, -28.75], [130.47, -28.53], [130.25, -28.0], [130.47, -27.47], [131.0, -27.25], [131.25, -27.35], [131.32, -27.32], [131.35, -27.25], [131.25, -27.0], [131.47, -26.47], [132.0, -26.25], [132.53, -26.47], [132.75, -27.0], [132.65, -27.25], [132.68, -27.32], [133.03, -27.47], [133.18, -27.82], [133.25, -27.85], [133.5, -27.75], [133.75, -27.85], [134.0, -27.75], [134.53, -27.97], [134.68, -28.32], [135.03, -28.47], [135.25, -29.0], [135.03, -29.53], [134.5, -29.75], [134.25, -29.65], [134.0, -29.75], [133.75, -29.65], [133.68, -29.68], [133.53, -30.03], [133.0, -30.25], [132.75, -30.15], [132.68, -30.18], [132.53, -30.53], [132.0, -30.75], [131.47, -30.53], [131.32, -30.18], [130.97, -30.03], [130.75, -29.5], [130.97, -28.97], [131.32, -28.82], [131.35, -28.75], [131.32, -28.68], [131.25, -28.65], [131.0, -28.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.082805370072322}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.335752604320269}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.268481954506342, 9.481514862981271, 9.29000050175091]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.999479888133294, 8.653575636679136, 8.306087270264129]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.4899441186762825, -3.2111765595717157, -3.306137134712809]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.082805370072322, -3.7174789705599096, -3.7800149031680803]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.293171886609238, -1.178195399704149, -1.2425590113888163]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.497367203241868, -1.3434341627317181, -1.4425238714348338]}}