{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:36.740259", "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-Feb-22_to_2026-Feb-25_124.5_-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": 2026020000507}, "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": "February 22 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 25 2026"}, "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": 83838.44187330888}, "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": -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": 124.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "124.5\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": -27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -23.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.75, -25.0], [121.97, -24.47], [122.32, -24.32], 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[122.82, -23.82], [122.97, -23.47], [123.5, -23.25], [123.75, -23.35], [124.0, -23.25], [124.25, -23.35], [124.5, -23.25], [125.03, -23.47], [125.18, -23.82], [125.53, -23.97], [125.68, -24.32], [126.03, -24.47], [126.25, -25.0], [126.03, -25.53], [125.68, -25.68], [125.65, -25.75], [125.68, -25.82], [126.03, -25.97], [126.18, -26.32], [126.25, -26.35], [126.5, -26.25], [127.03, -26.47], [127.25, -27.0], [127.03, -27.53], [126.68, -27.68], [126.53, -28.03], [126.0, -28.25], [125.47, -28.03], [125.25, -27.5], [125.35, -27.25], [125.32, -27.18], [125.25, -27.15], [125.0, -27.25], [124.47, -27.03], [124.32, -26.68], [124.25, -26.65], [124.0, -26.75], [123.47, -26.53], [123.32, -26.18], [123.25, -26.15], [123.0, -26.25], [122.47, -26.03], [122.32, -25.68], [121.97, -25.53], [121.82, -25.18], [121.47, -25.03], [121.25, -24.5]]]]}, "2026-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.25, -24.5], [121.47, -23.97], [122.0, -23.75], [122.25, -23.85], [122.5, -23.75], [122.75, -23.85], [122.82, -23.82], [122.97, -23.47], [123.5, -23.25], [123.75, -23.35], [124.0, -23.25], [124.25, -23.35], [124.5, -23.25], [125.03, -23.47], [125.18, -23.82], [125.53, -23.97], [125.68, -24.32], [126.03, -24.47], [126.25, -25.0], [126.03, -25.53], [125.68, -25.68], [125.65, -25.75], [125.68, -25.82], [126.03, -25.97], [126.18, -26.32], [126.25, -26.35], [126.5, -26.25], [127.03, -26.47], [127.25, -27.0], [127.03, -27.53], [126.68, -27.68], [126.53, -28.03], [126.0, -28.25], [125.47, -28.03], [125.25, -27.5], [125.35, -27.25], [125.32, -27.18], [125.25, -27.15], [125.0, -27.25], [124.47, -27.03], [124.32, -26.68], [124.25, -26.65], [124.0, -26.75], [123.47, -26.53], [123.32, -26.18], [123.25, -26.15], [123.0, -26.25], [122.47, -26.03], [122.32, -25.68], [121.97, -25.53], [121.82, -25.18], [121.47, -25.03], [121.25, -24.5]]]]}, "2026-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.97, -26.03], [123.75, -25.5], [123.97, -24.97], [124.5, -24.75], [125.03, -24.97], [125.25, -25.5], [125.03, -26.03], [124.5, -26.25], [123.97, -26.03]]], [[[121.25, -24.5], [121.47, -23.97], [122.0, -23.75], [122.25, -23.85], [122.5, -23.75], [123.03, -23.97], [123.25, -24.5], [123.03, -25.03], [122.5, -25.25], [122.25, -25.15], [122.0, -25.25], [121.47, -25.03], [121.25, -24.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.522729642850493}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.734187167970234}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.955857849121116, 23.06948928833009, 23.361726803249894, 23.591143968370204]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.417283630371116, 20.5032783508301, 21.40841191609701, 23.30848337809249]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.1303779806227805, -6.835770206968582, -6.335186323454152, -6.010584305057137]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.522729642850493, -7.654950161211673, -6.762189639972746, -6.125887266609936]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6384309103199384, -1.5637681863421762, -1.4451484490120272, -1.3703150573425023]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9066816743681794, -1.721922978130829, -1.509165657536076, -1.406523311521962]}}