{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:12.941944", "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": "2023-Feb-20_to_2023-Feb-23_148.5_-20.5"}, "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": 2023020000780}, "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 20 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 23 2023"}, "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": 66037.18708211565}, "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": ["E.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": ["Coral Sea"]}, "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": -20.5}, "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": 148.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "148.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 147.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 150.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.25, -21.5], [147.47, -20.97], [147.82, -20.82], [147.85, -20.75], [147.75, -20.5], [147.97, -19.97], [148.5, -19.75], [149.03, -19.97], [149.25, -20.5], [149.15, -20.75], [149.18, -20.82], [149.53, -20.97], [149.75, -21.5], [149.65, -21.75], [149.75, -22.0], [149.53, -22.53], [149.0, -22.75], [148.75, -22.65], [148.5, -22.75], [147.97, -22.53], [147.82, -22.18], [147.47, -22.03], [147.25, -21.5]]]]}, "2023-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.25, -21.5], [147.47, -20.97], [147.82, -20.82], [147.85, -20.75], [147.75, -20.5], [147.85, -20.25], [147.75, -20.0], [147.97, -19.47], [148.5, -19.25], [149.03, -19.47], [149.18, -19.82], [149.25, -19.85], [149.5, -19.75], [150.03, -19.97], [150.18, -20.32], [150.25, -20.35], [150.5, -20.25], [151.03, -20.47], [151.25, -21.0], [151.03, -21.53], [150.68, -21.68], [150.54, -22.0], [150.68, -22.32], [151.03, -22.47], [151.25, -23.0], [151.15, -23.25], [151.25, -23.5], [151.15, -23.75], [151.25, -24.0], [151.03, -24.53], [150.5, -24.75], [149.97, -24.53], [149.82, -24.18], [149.47, -24.03], [149.25, -23.5], [149.35, -23.25], [149.25, -23.0], [149.35, -22.75], [149.32, -22.68], [149.25, -22.65], [149.0, -22.75], [148.75, -22.65], [148.5, -22.75], [147.97, -22.53], [147.82, -22.18], [147.47, -22.03], [147.25, -21.5]]]]}, "2023-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.25, -21.5], [147.47, -20.97], [147.82, -20.82], [147.85, -20.75], [147.75, -20.5], [147.85, -20.25], [147.75, -20.0], [147.97, -19.47], [148.5, -19.25], [149.03, -19.47], [149.18, -19.82], [149.25, -19.85], [149.5, -19.75], [150.03, -19.97], [150.18, -20.32], [150.25, -20.35], [150.5, -20.25], [151.03, -20.47], [151.25, -21.0], [151.03, -21.53], [150.68, -21.68], [150.54, -22.0], [150.68, -22.32], [151.03, -22.47], [151.25, -23.0], [151.15, -23.25], [151.25, -23.5], [151.15, -23.75], [151.25, -24.0], [151.03, -24.53], [150.5, -24.75], [149.97, -24.53], [149.82, -24.18], [149.47, -24.03], [149.25, -23.5], [149.35, -23.25], [149.25, -23.0], [149.35, -22.75], [149.32, -22.68], [149.25, -22.65], [149.0, -22.75], [148.75, -22.65], [148.5, -22.75], [147.97, -22.53], [147.82, -22.18], [147.47, -22.03], [147.25, -21.5]]]]}, "2023-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.75, -20.0], [147.97, -19.47], [148.5, -19.25], [149.03, -19.47], [149.18, -19.82], [149.25, -19.85], [149.5, -19.75], [150.03, -19.97], [150.18, -20.32], [150.25, -20.35], [150.5, -20.25], [151.03, -20.47], [151.25, -21.0], [151.03, -21.53], [150.68, -21.68], [150.54, -22.0], [150.68, -22.32], [151.03, -22.47], [151.25, -23.0], [151.15, -23.25], [151.25, -23.5], [151.15, -23.75], [151.25, -24.0], [151.03, -24.53], [150.5, -24.75], [149.97, -24.53], [149.82, -24.18], [149.47, -24.03], [149.25, -23.5], [149.35, -23.25], [149.25, -23.0], [149.35, -22.75], [149.32, -22.68], [148.97, -22.53], [148.75, -22.0], [148.85, -21.75], [148.82, -21.68], [148.47, -21.53], [148.25, -21.0], [148.35, -20.75], [148.32, -20.68], [147.97, -20.53], [147.75, -20.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.242190669610295}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9681483412885237}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.40543709450327, 23.94665805489376, 24.324127171828422, 24.839467865556173]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.04929170368166, 20.51224204044553, 21.79327196360049, 23.203276237500347]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1874101605489336, -2.245740505344194, -1.862001966054841, -1.6257679739304862]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.7725781118713826, -4.242190669610295, -2.598604636336404, -2.566132814557534]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4316652834018784, -1.8369963933669577, -1.6315442346821063, -1.5691369776716362]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5558644629849208, -2.6872451363165037, -2.175118310299986, -1.8556350496323248]}}