{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:51:31.130262", "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-Apr-01_to_2024-Apr-05_123.5_-29.5"}, "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": 2024040000028}, "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": "April 01 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 05 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 62423.287479532955}, "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": -29.5}, "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": 122.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 125.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.97, -28.97], [123.5, -28.75], [124.0, -28.96], [124.5, -28.75], [124.75, -28.85], [125.0, -28.75], [125.53, -28.97], [125.75, -29.5], [125.53, -30.03], [125.0, -30.25], [124.75, -30.15], [124.5, -30.25], [124.2, -30.12], [124.03, -30.53], [123.5, -30.75], [122.97, -30.53], [122.75, -30.0], [122.85, -29.75], [122.75, -29.5], [122.97, -28.97]]]]}, "2024-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.75, -28.0], [121.97, -27.47], [122.32, -27.32], [122.47, -26.97], [123.0, -26.75], [123.25, -26.85], [123.5, -26.75], [123.75, -26.85], [124.0, -26.75], [124.53, -26.97], [124.68, -27.32], [125.03, -27.47], [125.18, -27.82], [125.53, -27.97], [125.68, -28.32], [126.03, -28.47], [126.25, -29.0], [126.03, -29.53], [125.68, -29.68], [125.53, -30.03], [125.0, -30.25], [124.75, -30.15], [124.5, -30.25], [124.2, -30.12], [124.03, -30.53], [123.5, -30.75], [122.97, -30.53], [122.75, -30.0], [122.85, -29.75], [122.82, -29.68], [122.47, -29.53], [122.25, -29.0], [122.35, -28.75], [122.32, -28.68], [121.97, -28.53], [121.75, -28.0]]]]}, "2024-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.75, -28.0], [121.97, -27.47], [122.32, -27.32], [122.47, -26.97], [123.0, -26.75], [123.25, -26.85], [123.5, -26.75], [123.75, -26.85], [124.0, -26.75], [124.53, -26.97], [124.68, -27.32], [125.03, -27.47], [125.18, -27.82], [125.53, -27.97], [125.68, -28.32], [126.03, -28.47], [126.25, -29.0], [126.03, -29.53], [125.68, -29.68], [125.53, -30.03], [125.0, -30.25], [124.75, -30.15], [124.5, -30.25], [124.2, -30.12], [124.03, -30.53], [123.5, -30.75], [122.97, -30.53], [122.75, -30.0], [122.85, -29.75], [122.82, -29.68], [122.47, -29.53], [122.25, -29.0], [122.35, -28.75], [122.32, -28.68], [121.97, -28.53], [121.75, -28.0]]]]}, "2024-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.75, -28.0], [121.97, -27.47], [122.32, -27.32], [122.47, -26.97], [123.0, -26.75], [123.25, -26.85], [123.5, -26.75], [123.75, -26.85], [124.0, -26.75], [124.53, -26.97], [124.68, -27.32], [125.03, -27.47], [125.18, -27.82], [125.53, -27.97], [125.68, -28.32], [126.03, -28.47], [126.25, -29.0], [126.03, -29.53], [125.68, -29.68], [125.53, -30.03], [125.0, -30.25], [124.75, -30.15], [124.5, -30.25], [124.2, -30.12], [124.03, -30.53], [123.5, -30.75], [122.97, -30.53], [122.75, -30.0], [122.85, -29.75], [122.82, -29.68], [122.47, -29.53], [122.25, -29.0], [122.35, -28.75], [122.32, -28.68], [121.97, -28.53], [121.75, -28.0]]]]}, "2024-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.47, -29.53], [124.25, -29.0], [124.47, -28.47], [125.0, -28.25], [125.53, -28.47], [125.75, -29.0], [125.53, -29.53], [125.0, -29.75], [124.47, -29.53]]], [[[122.97, -28.53], [122.75, -28.0], [122.97, -27.47], [123.5, -27.25], [124.03, -27.47], [124.25, -28.0], [124.03, -28.53], [123.5, -28.75], [122.97, -28.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.755517452062179}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.8875037215512585}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.286633025655988, 15.977068699485642, 16.18857392084277, 16.677138191186884, 17.064662230646206]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.810111885722279, 14.189441780226673, 15.445138844348946, 15.699631422277264, 16.60316706641356]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.245095399889124, -5.307855196324239, -5.03679794244946, -4.480519454542806, -4.301713935254156]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.301964633771718, -5.755517452062179, -5.578938274954851, -4.799864310393161, -4.422283706831138]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2323314617739998, -1.5032298120123997, -1.449987153094192, -1.3013218574108933, -1.2472104171389802]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.253898607535098, -1.704955901619707, -1.5640741588661204, -1.370717753089277, -1.267028424294125]}}