{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:32.437329", "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_123.0_-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": 2026050000100}, "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": 149265.6801974514}, "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": 123.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "123.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 127.25}, "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": -22.75}, "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": [[[[119.75, -24.5], [119.97, -23.97], [120.32, -23.82], [120.47, -23.47], [120.82, -23.32], [120.97, -22.97], [121.32, -22.82], [121.47, -22.47], [122.0, -22.25], [122.25, -22.35], [122.5, -22.25], [122.75, -22.35], [123.0, -22.25], [123.25, -22.35], [123.5, -22.25], [124.03, -22.47], [124.18, -22.82], [124.25, -22.85], [124.5, -22.75], [124.75, -22.85], [125.0, -22.75], [125.53, -22.97], [125.68, -23.32], [125.75, -23.35], [126.0, -23.25], [126.53, -23.47], [126.68, -23.82], [126.75, -23.85], [127.0, -23.75], [127.53, -23.97], [127.75, -24.5], [127.53, -25.03], [127.18, -25.18], [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], [124.5, -26.04], [124.0, -26.25], [123.47, -26.03], [123.32, -25.68], [123.25, -25.65], [123.0, -25.75], [122.75, -25.65], [122.5, -25.75], [122.25, -25.65], [122.0, -25.75], [121.75, -25.65], [121.5, -25.75], [121.25, -25.65], [121.0, -25.75], [120.47, -25.53], [120.32, -25.18], [119.97, -25.03], [119.75, -24.5]]]]}, "2026-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.75, -24.5], [119.97, -23.97], [120.32, -23.82], [120.47, -23.47], [120.82, -23.32], [120.97, -22.97], [121.32, -22.82], [121.47, -22.47], [122.0, -22.25], [122.25, -22.35], [122.5, -22.25], [122.75, -22.35], [123.0, -22.25], [123.25, -22.35], [123.5, -22.25], [124.03, -22.47], [124.18, -22.82], [124.25, -22.85], [124.5, -22.75], [124.75, -22.85], [125.0, -22.75], [125.53, -22.97], [125.68, -23.32], [125.75, -23.35], [126.0, -23.25], [126.53, -23.47], [126.68, -23.82], [126.75, -23.85], [127.0, -23.75], [127.53, -23.97], [127.75, -24.5], [127.53, -25.03], [127.18, -25.18], [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], [124.5, -26.04], [124.0, -26.25], [123.47, -26.03], [123.32, -25.68], [123.25, -25.65], [123.0, -25.75], [122.75, -25.65], [122.5, -25.75], [122.25, -25.65], [122.0, -25.75], [121.75, -25.65], [121.5, -25.75], [121.25, -25.65], [121.0, -25.75], [120.47, -25.53], [120.32, -25.18], [119.97, -25.03], [119.75, -24.5]]]]}, "2026-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.75, -24.5], [119.97, -23.97], [120.32, -23.82], [120.47, -23.47], [120.82, -23.32], [120.97, -22.97], [121.32, -22.82], [121.47, -22.47], [122.0, -22.25], [122.25, -22.35], [122.5, -22.25], [122.75, -22.35], [123.0, -22.25], [123.25, -22.35], [123.5, -22.25], [124.03, -22.47], [124.18, -22.82], [124.25, -22.85], [124.5, -22.75], [124.75, -22.85], [125.0, -22.75], [125.53, -22.97], [125.68, -23.32], [125.75, -23.35], [126.0, -23.25], [126.53, -23.47], [126.68, -23.82], [126.75, -23.85], [127.0, -23.75], [127.53, -23.97], [127.75, -24.5], [127.53, -25.03], [127.18, -25.18], [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], [124.5, -26.04], [124.0, -26.25], [123.47, -26.03], [123.32, -25.68], [123.25, -25.65], [123.0, -25.75], [122.75, -25.65], [122.5, -25.75], [122.25, -25.65], [122.0, -25.75], [121.75, -25.65], [121.5, -25.75], [121.25, -25.65], [121.0, -25.75], [120.47, -25.53], [120.32, -25.18], [119.97, -25.03], [119.75, -24.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.498770003848222}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.022332012519371}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.77530916321956, 17.190877892836113, 17.0163960630789]}, "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": [-5.487457946047428, -4.821244522484352, -4.758293569026329]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.498770003848222, -5.36156362419257, -4.983131214608591]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6845867528432839, -1.5060702284111185, -1.5002487279413133]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.88226733222754, -1.5791803394429589, -1.6876856360915327]}}