{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:06.472969", "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": "2024-Jan-24_to_2024-Jan-27_119.0_-25.0"}, "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": 2024010000692}, "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": "January 24 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 27 2024"}, "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": 204389.05444462592}, "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": -25.0}, "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": 119.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "119.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -23.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[117.35, -26.25], [117.25, -26.0], [117.35, -25.75], [117.25, -25.5], [117.35, -25.25], [117.25, -25.0], [117.47, -24.47], [117.82, -24.32], [117.85, -24.25], [117.75, -24.0], [117.85, -23.75], [117.75, -23.5], [117.97, -22.97], [118.5, -22.75], [118.75, -22.85], [119.0, -22.75], [119.53, -22.97], [119.68, -23.32], [119.75, -23.35], [120.0, -23.25], [120.25, -23.35], [120.5, -23.25], [121.03, -23.47], [121.25, -24.0], [121.04, -24.5], [121.25, -25.0], [121.15, -25.25], [121.25, -25.5], [121.15, -25.75], [121.18, -25.82], [121.53, -25.97], [121.68, -26.32], [122.03, -26.47], [122.18, -26.82], [122.53, -26.97], [122.75, -27.5], [122.65, -27.75], [122.68, -27.82], [123.03, -27.97], [123.25, -28.5], [123.03, -29.03], [122.68, -29.18], [122.53, -29.53], [122.0, -29.75], [121.75, -29.65], [121.5, -29.75], [121.25, -29.65], [121.18, -29.68], [121.03, -30.03], [120.5, -30.25], [119.97, -30.03], [119.82, -29.68], [119.47, -29.53], [119.32, -29.18], [119.25, -29.15], [119.0, -29.25], [118.47, -29.03], [118.32, -28.68], [117.97, -28.53], [117.82, -28.18], [117.47, -28.03], [117.25, -27.5], [117.35, -27.25], [117.25, -27.0], [117.35, -26.75], [117.25, -26.5], [117.35, -26.25]]]]}}, "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": {"2024-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.75, -25.0], [117.85, -24.75], [117.75, -24.5], [117.85, -24.25], [117.75, -24.0], [117.85, -23.75], [117.75, -23.5], [117.97, -22.97], [118.5, -22.75], [118.75, -22.85], [119.0, -22.75], [119.53, -22.97], [119.68, -23.32], [119.75, -23.35], [120.0, -23.25], [120.25, -23.35], [120.5, -23.25], [121.03, -23.47], [121.25, -24.0], [121.03, -24.53], [120.68, -24.68], [120.65, -24.75], [120.75, -25.0], [120.65, -25.25], [120.75, -25.5], [120.53, -26.03], [120.0, -26.25], [119.75, -26.15], [119.5, -26.25], [119.25, -26.15], [119.0, -26.25], [118.75, -26.15], [118.5, -26.25], [117.97, -26.03], [117.75, -25.5], [117.85, -25.25], [117.75, -25.0]]]]}, "2024-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.25, -27.0], [117.35, -26.75], [117.25, -26.5], [117.35, -26.25], [117.25, -26.0], [117.35, -25.75], [117.25, -25.5], [117.35, -25.25], [117.25, -25.0], [117.47, -24.47], [117.82, -24.32], [117.85, -24.25], [117.75, -24.0], [117.85, -23.75], [117.75, -23.5], [117.97, -22.97], [118.5, -22.75], [118.75, -22.85], [119.0, -22.75], [119.53, -22.97], [119.68, -23.32], [119.75, -23.35], [120.0, -23.25], [120.25, -23.35], [120.5, -23.25], [121.03, -23.47], [121.25, -24.0], [121.04, -24.5], [121.25, -25.0], [121.15, -25.25], [121.25, -25.5], [121.15, -25.75], [121.18, -25.82], [121.53, -25.97], [121.68, -26.32], [122.03, -26.47], [122.18, -26.82], [122.53, -26.97], [122.75, -27.5], [122.65, -27.75], [122.68, -27.82], [123.03, -27.97], [123.25, -28.5], [123.03, -29.03], [122.68, -29.18], [122.53, -29.53], [122.0, -29.75], [121.75, -29.65], [121.5, -29.75], [121.25, -29.65], [121.18, -29.68], [121.03, -30.03], [120.5, -30.25], [119.97, -30.03], [119.82, -29.68], [119.47, -29.53], [119.32, -29.18], [119.25, -29.15], [119.0, -29.25], [118.47, -29.03], [118.32, -28.68], [117.97, -28.53], [117.82, -28.18], [117.47, -28.03], [117.25, -27.5], [117.35, -27.25], [117.25, -27.0]]]]}, "2024-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.25, -27.0], [117.35, -26.75], [117.25, -26.5], [117.35, -26.25], [117.25, -26.0], [117.35, -25.75], [117.25, -25.5], [117.35, -25.25], [117.25, -25.0], [117.47, -24.47], [117.82, -24.32], [117.85, -24.25], [117.75, -24.0], [117.85, -23.75], [117.75, -23.5], [117.97, -22.97], [118.5, -22.75], [118.75, -22.85], [119.0, -22.75], [119.53, -22.97], [119.68, -23.32], [119.75, -23.35], [120.0, -23.25], [120.25, -23.35], [120.5, -23.25], [121.03, -23.47], [121.25, -24.0], [121.04, -24.5], [121.25, -25.0], [121.15, -25.25], [121.25, -25.5], [121.15, -25.75], [121.18, -25.82], [121.53, -25.97], [121.68, -26.32], [122.03, -26.47], [122.18, -26.82], [122.53, -26.97], [122.75, -27.5], [122.65, -27.75], [122.68, -27.82], [123.03, -27.97], [123.25, -28.5], [123.03, -29.03], [122.68, -29.18], [122.53, -29.53], [122.0, -29.75], [121.75, -29.65], [121.5, -29.75], [121.25, -29.65], [121.18, -29.68], [121.03, -30.03], [120.5, -30.25], [119.97, -30.03], [119.82, -29.68], [119.47, -29.53], [119.32, -29.18], [119.25, -29.15], [119.0, -29.25], [118.47, -29.03], [118.32, -28.68], [117.97, -28.53], [117.82, -28.18], [117.47, -28.03], [117.25, -27.5], [117.35, -27.25], [117.25, -27.0]]]]}, "2024-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.25, -27.0], [117.35, -26.75], [117.25, -26.5], [117.35, -26.25], [117.25, -26.0], [117.35, -25.75], [117.25, -25.5], [117.35, -25.25], [117.25, -25.0], [117.47, -24.47], [117.82, -24.32], [117.85, -24.25], [117.75, -24.0], [117.85, -23.75], [117.75, -23.5], [117.97, -22.97], [118.5, -22.75], [118.75, -22.85], [119.0, -22.75], [119.53, -22.97], [119.68, -23.32], [119.75, -23.35], [120.0, -23.25], [120.25, -23.35], [120.5, -23.25], [121.03, -23.47], [121.25, -24.0], [121.04, -24.5], [121.25, -25.0], [121.15, -25.25], [121.25, -25.5], [121.15, -25.75], [121.18, -25.82], [121.53, -25.97], [121.68, -26.32], [122.03, -26.47], [122.18, -26.82], [122.53, -26.97], [122.75, -27.5], [122.65, -27.75], [122.68, -27.82], [123.03, -27.97], [123.25, -28.5], [123.03, -29.03], [122.68, -29.18], [122.53, -29.53], [122.0, -29.75], [121.75, -29.65], [121.5, -29.75], [121.25, -29.65], [121.18, -29.68], [121.03, -30.03], [120.5, -30.25], [119.97, -30.03], [119.82, -29.68], [119.47, -29.53], [119.32, -29.18], [119.25, -29.15], [119.0, -29.25], [118.47, -29.03], [118.32, -28.68], [117.97, -28.53], [117.82, -28.18], [117.47, -28.03], [117.25, -27.5], [117.35, -27.25], [117.25, -27.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -12.788994163647828}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.38590091031611}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.329375023754267, 22.933002747314333, 20.014336471598142, 23.46987438913584]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.731452205021696, 18.035977356889305, 16.097865990138757, 22.35079887175567]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.687156687487067, -7.910884671123279, -10.673863463120542, -7.00911865391738]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.845353494720712, -10.61756356541514, -12.788994163647828, -8.573133148265526]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9490351401247097, -2.1659707294852883, -2.8756439911179053, -1.7940008295084318]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.285403617107487, -2.77884776830364, -3.2476820344798503, -2.3076972162812996]}}