{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:03.745179", "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-May-13_to_2022-May-16_113.5_-25.5"}, "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": 2022050000523}, "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": "May 13 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 16 2022"}, "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": 301889.72675145796}, "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": -25.5}, "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": 113.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "113.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 113.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 121.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -27.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[112.85, -25.25], [112.75, -25.0], [112.85, -24.75], [112.75, -24.5], [112.85, -24.25], [112.75, -24.0], [112.85, -23.75], [112.75, -23.5], [112.97, -22.97], [113.5, -22.75], [113.75, -22.85], [114.0, -22.75], [114.25, -22.85], [114.5, -22.75], [114.75, -22.85], [114.82, -22.82], [114.85, -22.75], [114.75, -22.5], [114.97, -21.97], [115.5, -21.75], [116.03, -21.97], [116.18, -22.32], [116.25, -22.35], [116.5, -22.25], [116.75, -22.35], [117.0, -22.25], [117.53, -22.47], [117.68, -22.82], [117.75, -22.85], [118.0, -22.75], [118.25, -22.85], [118.5, -22.75], [119.03, -22.97], [119.25, -23.5], [119.15, -23.75], [119.18, -23.82], [119.25, -23.85], [119.5, -23.75], [120.03, -23.97], [120.18, -24.32], [120.53, -24.47], [120.68, -24.82], [121.03, -24.97], [121.18, -25.32], [121.53, -25.47], [121.68, -25.82], [122.03, -25.97], [122.25, -26.5], [122.03, -27.03], [121.68, -27.18], [121.53, -27.53], [121.0, -27.75], [120.47, -27.53], [120.32, -27.18], [119.97, -27.03], [119.82, -26.68], [119.5, -26.54], [119.0, -26.75], [118.47, -26.53], [118.32, -26.18], [118.25, -26.15], [118.18, -26.18], [118.03, -26.53], [117.68, -26.68], [117.65, -26.75], [117.68, -26.82], [118.03, -26.97], [118.25, -27.5], [118.03, -28.03], [117.5, -28.25], [117.25, -28.15], [117.0, -28.25], [116.75, -28.15], [116.5, -28.25], [116.25, -28.15], [116.0, -28.25], [115.75, -28.15], [115.5, -28.25], [115.25, -28.15], [115.0, -28.25], [114.75, -28.15], [114.5, -28.25], [113.97, -28.03], [113.82, -27.68], [113.47, -27.53], [113.32, -27.18], [112.97, -27.03], [112.75, -26.5], [112.85, -26.25], [112.75, -26.0], [112.85, -25.75], [112.75, -25.5], [112.85, -25.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.75, -26.0], [112.85, -25.75], [112.75, -25.5], [112.85, -25.25], [112.75, -25.0], [112.85, -24.75], [112.75, -24.5], [112.85, -24.25], [112.75, -24.0], [112.85, -23.75], [112.75, -23.5], [112.97, -22.97], [113.5, -22.75], [113.75, -22.85], [114.0, -22.75], [114.25, -22.85], [114.5, -22.75], [114.75, -22.85], [114.82, -22.82], [114.85, -22.75], [114.75, -22.5], [114.97, -21.97], [115.5, -21.75], [116.03, -21.97], [116.18, -22.32], [116.25, -22.35], [116.5, -22.25], [116.75, -22.35], [117.0, -22.25], [117.53, -22.47], [117.68, -22.82], [117.75, -22.85], [118.0, -22.75], [118.25, -22.85], [118.5, -22.75], [119.03, -22.97], [119.25, -23.5], [119.15, -23.75], [119.18, -23.82], [119.25, -23.85], [119.5, -23.75], [120.03, -23.97], [120.18, -24.32], [120.53, -24.47], [120.68, -24.82], [121.03, -24.97], [121.18, -25.32], [121.53, -25.47], [121.68, -25.82], [122.03, -25.97], [122.25, -26.5], [122.03, -27.03], [121.68, -27.18], [121.53, -27.53], [121.0, -27.75], [120.47, -27.53], [120.32, -27.18], [119.97, -27.03], [119.82, -26.68], [119.5, -26.54], [119.0, -26.75], [118.47, -26.53], [118.32, -26.18], [118.25, -26.15], [118.18, -26.18], [118.03, -26.53], [117.68, -26.68], [117.65, -26.75], [117.68, -26.82], [118.03, -26.97], [118.25, -27.5], [118.03, -28.03], [117.5, -28.25], [117.25, -28.15], [117.0, -28.25], [116.75, -28.15], [116.5, -28.25], [116.25, -28.15], [116.0, -28.25], [115.75, -28.15], [115.5, -28.25], [115.25, -28.15], [115.0, -28.25], [114.75, -28.15], [114.5, -28.25], [113.97, -28.03], [113.82, -27.68], [113.47, -27.53], [113.32, -27.18], [112.97, -27.03], [112.75, -26.5], [112.85, -26.25], [112.75, -26.0]]]]}, "2022-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.75, -26.0], [112.85, -25.75], [112.75, -25.5], [112.85, -25.25], [112.75, -25.0], [112.85, -24.75], [112.75, -24.5], [112.85, -24.25], [112.75, -24.0], [112.85, -23.75], [112.75, -23.5], [112.97, -22.97], [113.5, -22.75], [113.75, -22.85], [114.0, -22.75], [114.25, -22.85], [114.5, -22.75], [114.75, -22.85], [114.82, -22.82], [114.85, -22.75], [114.75, -22.5], [114.97, -21.97], [115.5, -21.75], [116.03, -21.97], [116.18, -22.32], [116.25, -22.35], [116.5, -22.25], [116.75, -22.35], [117.0, -22.25], [117.53, -22.47], [117.68, -22.82], [117.75, -22.85], [118.0, -22.75], [118.25, -22.85], [118.5, -22.75], [119.03, -22.97], [119.25, -23.5], [119.15, -23.75], [119.18, -23.82], [119.25, -23.85], [119.5, -23.75], [120.03, -23.97], [120.18, -24.32], [120.53, -24.47], [120.68, -24.82], [121.03, -24.97], [121.18, -25.32], [121.53, -25.47], [121.68, -25.82], [122.03, -25.97], [122.25, -26.5], [122.03, -27.03], [121.68, -27.18], [121.53, -27.53], [121.0, -27.75], [120.47, -27.53], [120.32, -27.18], [119.97, -27.03], [119.82, -26.68], [119.5, -26.54], [119.0, -26.75], [118.47, -26.53], [118.32, -26.18], [118.25, -26.15], [118.18, -26.18], [118.03, -26.53], [117.68, -26.68], [117.65, -26.75], [117.68, -26.82], [118.03, -26.97], [118.25, -27.5], [118.03, -28.03], [117.5, -28.25], [117.25, -28.15], [117.0, -28.25], [116.75, -28.15], [116.5, -28.25], [116.25, -28.15], [116.0, -28.25], [115.75, -28.15], [115.5, -28.25], [115.25, -28.15], [115.0, -28.25], [114.75, -28.15], [114.5, -28.25], [113.97, -28.03], [113.82, -27.68], [113.47, -27.53], [113.32, -27.18], [112.97, -27.03], [112.75, -26.5], [112.85, -26.25], [112.75, -26.0]]]]}, "2022-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.75, -26.0], [112.85, -25.75], [112.75, -25.5], [112.85, -25.25], [112.75, -25.0], [112.85, -24.75], [112.75, -24.5], [112.85, -24.25], [112.75, -24.0], [112.85, -23.75], [112.75, -23.5], [112.97, -22.97], [113.5, -22.75], [113.75, -22.85], [114.0, -22.75], [114.25, -22.85], [114.5, -22.75], [114.75, -22.85], [114.82, -22.82], [114.85, -22.75], [114.75, -22.5], [114.97, -21.97], [115.5, -21.75], [116.03, -21.97], [116.18, -22.32], [116.25, -22.35], [116.5, -22.25], [116.75, -22.35], [117.0, -22.25], [117.53, -22.47], [117.68, -22.82], [117.75, -22.85], [118.0, -22.75], [118.25, -22.85], [118.5, -22.75], [119.03, -22.97], [119.25, -23.5], [119.15, -23.75], [119.18, -23.82], [119.25, -23.85], [119.5, -23.75], [120.03, -23.97], [120.18, -24.32], [120.53, -24.47], [120.68, -24.82], [121.03, -24.97], [121.18, -25.32], [121.53, -25.47], [121.68, -25.82], [122.03, -25.97], [122.25, -26.5], [122.03, -27.03], [121.68, -27.18], [121.53, -27.53], [121.0, -27.75], [120.47, -27.53], [120.32, -27.18], [119.97, -27.03], [119.82, -26.68], [119.5, -26.54], [119.0, -26.75], [118.47, -26.53], [118.32, -26.18], [118.25, -26.15], [118.18, -26.18], [118.03, -26.53], [117.68, -26.68], [117.65, -26.75], [117.68, -26.82], [118.03, -26.97], [118.25, -27.5], [118.03, -28.03], [117.5, -28.25], [117.25, -28.15], [117.0, -28.25], [116.75, -28.15], [116.5, -28.25], [116.25, -28.15], [116.0, -28.25], [115.75, -28.15], [115.5, -28.25], [115.25, -28.15], [115.0, -28.25], [114.75, -28.15], [114.5, -28.25], [113.97, -28.03], [113.82, -27.68], [113.47, -27.53], [113.32, -27.18], [112.97, -27.03], [112.75, -26.5], [112.85, -26.25], [112.75, -26.0]]]]}, "2022-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.97, -24.97], [113.5, -24.75], [114.03, -24.97], [114.25, -25.5], [114.03, -26.03], [113.5, -26.25], [112.97, -26.03], [112.75, -25.5], [112.97, -24.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.643694818994618}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.299592233163062}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.42870687654272, 15.643590164726561, 16.244852483878333, 20.23105861174332]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.225697716063848, 12.037291864576389, 13.175250313418701, 20.23105861174332]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.132168083214242, -4.752271535990301, -4.04024266216905, -1.5017893896472287]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.018899608647416, -5.643694818994618, -4.97488929729559, -1.5017893896472287]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.647197599878658, -1.9076908527612835, -1.598696465768169, -1.2849651713556978]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8919595598892036, -2.4086974886225923, -1.9670973859987313, -1.2849651713556978]}}