{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:26.574509", "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": "2017-Mar-07_to_2017-Mar-09_129.0_-22.0"}, "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": 2017030000186}, "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": "March 07 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 09 2017"}, "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": 66318.76965224677}, "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", "N.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": -22.0}, "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": 129.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "129.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 126.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 129.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, -20.47], [126.5, -20.25], [126.75, -20.35], [126.82, -20.32], [126.97, -19.97], [127.32, -19.82], [127.47, -19.47], [128.0, -19.25], [128.3, -19.37], [128.47, -18.97], [129.0, -18.75], [129.53, -18.97], [129.68, -19.32], [130.03, -19.47], [130.25, -20.0], [130.15, -20.25], [130.25, -20.5], [130.03, -21.03], [129.68, -21.18], [129.54, -21.5], [129.75, -22.0], [129.53, -22.53], [129.18, -22.68], [129.03, -23.03], [128.5, -23.25], [127.97, -23.03], [127.82, -22.68], [127.75, -22.65], [127.5, -22.75], [126.97, -22.53], [126.82, -22.18], [126.75, -22.15], [126.5, -22.25], [125.97, -22.03], [125.75, -21.5], [125.85, -21.25], [125.75, -21.0], [125.97, -20.47]]]]}, "2017-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, -20.47], [126.5, -20.25], [126.75, -20.35], [126.82, -20.32], [126.97, -19.97], [127.32, -19.82], [127.47, -19.47], [128.0, -19.25], [128.3, -19.37], [128.47, -18.97], [129.0, -18.75], [129.53, -18.97], [129.68, -19.32], [130.03, -19.47], [130.25, -20.0], [130.15, -20.25], [130.25, -20.5], [130.03, -21.03], [129.68, -21.18], [129.54, -21.5], [129.75, -22.0], [129.53, -22.53], [129.18, -22.68], [129.03, -23.03], [128.5, -23.25], [127.97, -23.03], [127.82, -22.68], [127.75, -22.65], [127.5, -22.75], [126.97, -22.53], [126.82, -22.18], [126.75, -22.15], [126.5, -22.25], [125.97, -22.03], [125.75, -21.5], [125.85, -21.25], [125.75, -21.0], [125.97, -20.47]]]]}, "2017-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, -20.47], [126.5, -20.25], [126.75, -20.35], [126.82, -20.32], [126.97, -19.97], [127.32, -19.82], [127.47, -19.47], [128.0, -19.25], [128.3, -19.37], [128.47, -18.97], [129.0, -18.75], [129.53, -18.97], [129.68, -19.32], [130.03, -19.47], [130.25, -20.0], [130.15, -20.25], [130.25, -20.5], [130.03, -21.03], [129.68, -21.18], [129.54, -21.5], [129.75, -22.0], [129.53, -22.53], [129.18, -22.68], [129.03, -23.03], [128.5, -23.25], [127.97, -23.03], [127.82, -22.68], [127.75, -22.65], [127.5, -22.75], [126.97, -22.53], [126.82, -22.18], [126.75, -22.15], [126.5, -22.25], [125.97, -22.03], [125.75, -21.5], [125.85, -21.25], [125.75, -21.0], [125.97, -20.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.142338910338538}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.562844482919462}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.642396702736335, 23.893485415465364, 25.587657997408314]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.601796620340394, 22.17176632925043, 24.94943581544254]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.355715135156006, -6.030854374888854, -4.301963938713527]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.211274990530683, -8.142338910338538, -5.054408085147031]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0029661297704706, -1.925264094550098, -1.4284408231858594]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3131721427108753, -2.5088686601024333, -1.5876930884467508]}}