{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-28 16:19:50.569142", "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": "2026-May-02_to_2026-May-04_123.5_-24.5"}, "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": 2026050000124}, "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 02 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 04 2026"}, "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": 84433.51746323437}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Australia"]}, "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": -24.5}, "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": 123.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "123.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 121.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 126.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.47, -23.47], [121.82, -23.32], [121.97, -22.97], [122.5, -22.75], [122.75, -22.85], [123.0, -22.75], [123.25, -22.85], [123.5, -22.75], [123.75, -22.85], [124.0, -22.75], [124.25, -22.85], [124.5, -22.75], [125.03, -22.97], [125.18, -23.32], [125.25, -23.35], [125.5, -23.25], [126.03, -23.47], [126.18, -23.82], [126.25, -23.85], [126.5, -23.75], [127.03, -23.97], [127.25, -24.5], [127.15, -24.75], [127.25, -25.0], [127.03, -25.53], [126.63, -25.7], [126.75, -26.0], [126.53, -26.53], [126.0, -26.75], [125.47, -26.53], [125.32, -26.18], [125.25, -26.15], [125.0, -26.25], [124.47, -26.03], [124.32, -25.68], [124.25, -25.65], [124.0, -25.75], [123.47, -25.53], [123.32, -25.18], [123.25, -25.15], [123.0, -25.25], [122.75, -25.15], [122.5, -25.25], [122.25, -25.15], [122.0, -25.25], [121.47, -25.03], [121.25, -24.5], [121.35, -24.25], [121.25, -24.0], [121.47, -23.47]]]]}, "2026-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.47, -23.47], [121.82, -23.32], [121.97, -22.97], [122.5, -22.75], [122.75, -22.85], [123.0, -22.75], [123.25, -22.85], [123.5, -22.75], [123.75, -22.85], [124.0, -22.75], [124.25, -22.85], [124.5, -22.75], [125.03, -22.97], [125.18, -23.32], [125.25, -23.35], [125.5, -23.25], [126.03, -23.47], [126.18, -23.82], [126.25, -23.85], [126.5, -23.75], [127.03, -23.97], [127.25, -24.5], [127.15, -24.75], [127.25, -25.0], [127.03, -25.53], [126.63, -25.7], [126.75, -26.0], [126.53, -26.53], [126.0, -26.75], [125.47, -26.53], [125.32, -26.18], [125.25, -26.15], [125.0, -26.25], [124.47, -26.03], [124.32, -25.68], [124.25, -25.65], [124.0, -25.75], [123.47, -25.53], [123.32, -25.18], [123.25, -25.15], [123.0, -25.25], [122.75, -25.15], [122.5, -25.25], [122.25, -25.15], [122.0, -25.25], [121.47, -25.03], [121.25, -24.5], [121.35, -24.25], [121.25, -24.0], [121.47, -23.47]]]]}, "2026-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.47, -23.47], [121.82, -23.32], [121.97, -22.97], [122.5, -22.75], [122.75, -22.85], [123.0, -22.75], [123.25, -22.85], [123.5, -22.75], [123.75, -22.85], [124.0, -22.75], [124.25, -22.85], [124.5, -22.75], [125.03, -22.97], [125.18, -23.32], [125.25, -23.35], [125.5, -23.25], [126.03, -23.47], [126.18, -23.82], [126.25, -23.85], [126.5, -23.75], [127.03, -23.97], [127.25, -24.5], [127.15, -24.75], [127.25, -25.0], [127.03, -25.53], [126.63, -25.7], [126.75, -26.0], [126.53, -26.53], [126.0, -26.75], [125.47, -26.53], [125.32, -26.18], [125.25, -26.15], [125.0, -26.25], [124.47, -26.03], [124.32, -25.68], [124.25, -25.65], [124.0, -25.75], [123.47, -25.53], [123.32, -25.18], [123.25, -25.15], [123.0, -25.25], [122.75, -25.15], [122.5, -25.25], [122.25, -25.15], [122.0, -25.25], [121.47, -25.03], [121.25, -24.5], [121.35, -24.25], [121.25, -24.0], [121.47, -23.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.157421707462959}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.893648354074066}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.70145882500543, 17.10156792534724, 17.020640987820116]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.586235300699911, 14.498315429687523, 14.879313405354821]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.288935498406122, -4.697560985411051, -4.694448578405025]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.157421707462959, -5.118220339626532, -4.853961334190785]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6090291358254676, -1.4275112566838806, -1.4285768317995526]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7469426148114269, -1.4822420086701869, -1.5336814790119346]}}