{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:01:54.399548", "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": "2014-Dec-22_to_2014-Dec-27_130.0_-28.5"}, "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": 2014120000943}, "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": "December 22 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 27 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 92207.47197919364}, "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": -28.5}, "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": 130.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "130.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 125.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 131.25}, "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": -26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.0, -27.75], [130.53, -27.97], [130.75, -28.5], [130.53, -29.03], [130.0, -29.25], [129.47, -29.03], [129.25, -28.5], [129.47, -27.97], [130.0, -27.75]]]]}, "2014-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.47, -27.97], [130.0, -27.75], [130.53, -27.97], [130.68, -28.32], [131.03, -28.47], [131.18, -28.82], [131.53, -28.97], [131.75, -29.5], [131.65, -29.75], [131.75, -30.0], [131.53, -30.53], [131.0, -30.75], [130.75, -30.65], [130.5, -30.75], [129.97, -30.53], [129.75, -30.0], [129.85, -29.75], [129.82, -29.68], [129.47, -29.53], [129.25, -29.0], [129.35, -28.75], [129.25, -28.5], [129.47, -27.97]]]]}, "2014-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.47, -27.97], [130.0, -27.75], [130.53, -27.97], [130.68, -28.32], [131.03, -28.47], [131.18, -28.82], [131.53, -28.97], [131.75, -29.5], [131.65, -29.75], [131.75, -30.0], [131.53, -30.53], [131.0, -30.75], [130.75, -30.65], [130.5, -30.75], [129.97, -30.53], [129.75, -30.0], [129.85, -29.75], [129.82, -29.68], [129.47, -29.53], [129.25, -29.0], [129.35, -28.75], [129.25, -28.5], [129.47, -27.97]]]]}, "2014-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.5, -26.75], [126.75, -26.85], [126.82, -26.82], [126.97, -26.47], [127.5, -26.25], [127.75, -26.35], [128.0, -26.25], [128.53, -26.47], [128.7, -26.87], [129.0, -26.75], [129.53, -26.97], [129.75, -27.5], [129.65, -27.75], [129.7, -27.87], [130.0, -27.75], [130.53, -27.97], [130.68, -28.32], [131.03, -28.47], [131.18, -28.82], [131.53, -28.97], [131.75, -29.5], [131.65, -29.75], [131.75, -30.0], [131.53, -30.53], [131.0, -30.75], [130.75, -30.65], [130.5, -30.75], [130.25, -30.65], [130.0, -30.75], [129.75, -30.65], [129.5, -30.75], [128.97, -30.53], [128.82, -30.18], [128.75, -30.15], [128.5, -30.25], [128.25, -30.15], [128.0, -30.25], [127.47, -30.03], [127.32, -29.68], [126.97, -29.53], [126.75, -29.0], [126.85, -28.75], [126.8, -28.62], [126.5, -28.75], [126.25, -28.65], [126.0, -28.75], [125.47, -28.53], [125.25, -28.0], [125.47, -27.47], [125.82, -27.32], [125.97, -26.97], [126.5, -26.75]]]]}, "2014-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.5, -26.75], [126.75, -26.85], [126.82, -26.82], [126.97, -26.47], [127.5, -26.25], [127.75, -26.35], [128.0, -26.25], [128.53, -26.47], [128.7, -26.87], [129.0, -26.75], [129.53, -26.97], [129.75, -27.5], [129.65, -27.75], [129.7, -27.87], [130.0, -27.75], [130.53, -27.97], [130.68, -28.32], [131.03, -28.47], [131.18, -28.82], [131.53, -28.97], [131.75, -29.5], [131.65, -29.75], [131.75, -30.0], [131.53, -30.53], [131.0, -30.75], [130.75, -30.65], [130.5, -30.75], [130.25, -30.65], [130.0, -30.75], [129.75, -30.65], [129.5, -30.75], [128.97, -30.53], [128.82, -30.18], [128.75, -30.15], [128.5, -30.25], [128.25, -30.15], [128.0, -30.25], [127.47, -30.03], [127.32, -29.68], [126.97, -29.53], [126.75, -29.0], [126.85, -28.75], [126.8, -28.62], [126.5, -28.75], [126.25, -28.65], [126.0, -28.75], [125.47, -28.53], [125.25, -28.0], [125.47, -27.47], [125.82, -27.32], [125.97, -26.97], [126.5, -26.75]]]]}, "2014-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.5, -26.75], [126.75, -26.85], [126.82, -26.82], [126.97, -26.47], [127.5, -26.25], [127.75, -26.35], [128.0, -26.25], [128.53, -26.47], [128.7, -26.87], [129.0, -26.75], [129.53, -26.97], [129.75, -27.5], [129.65, -27.75], [129.75, -28.0], [129.65, -28.25], [129.75, -28.5], [129.65, -28.75], [129.68, -28.82], [129.75, -28.85], [130.0, -28.75], [130.53, -28.97], [130.68, -29.32], [131.03, -29.47], [131.25, -30.0], [131.03, -30.53], [130.5, -30.75], [130.25, -30.65], [130.0, -30.75], [129.75, -30.65], [129.5, -30.75], [128.97, -30.53], [128.82, -30.18], [128.75, -30.15], [128.5, -30.25], [128.25, -30.15], [128.0, -30.25], [127.47, -30.03], [127.32, -29.68], [126.97, -29.53], [126.75, -29.0], [126.85, -28.75], [126.8, -28.62], [126.5, -28.75], [126.25, -28.65], [126.0, -28.75], [125.47, -28.53], [125.25, -28.0], [125.47, -27.47], [125.82, -27.32], [125.97, -26.97], [126.5, -26.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.67463995018386}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.18665649733419}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.745557053778555, 17.881231799202908, 18.857188247179806, 20.055300712435383, 19.124081782933104, 21.08623501539728]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.745557053778555, 17.34261242041663, 18.13850934182875, 18.120230998652175, 17.46122440275684, 19.279722300519268]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.7568205309804625, -7.073889009736498, -6.151993573779431, -5.835192923111011, -7.013789829534453, -5.411266392805625]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.7568205309804625, -7.544792241994685, -6.674341682504405, -6.96238438321916, -7.67463995018386, -5.6414108849662625]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.302902613067556, -1.5565283638995442, -1.3412960178612578, -1.3862195775324013, -1.7232852297038963, -1.368257574456561]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.302902613067556, -1.6539338535037658, -1.431768342160424, -1.5350450132581677, -1.8014498452326002, -1.456579085015241]}}