{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:10.360787", "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-Nov-28_to_2023-Dec-03_122.0_-19.5"}, "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": 2023110000606}, "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": "November 28 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 03 2023"}, "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": 110690.67587786946}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": -19.5}, "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": 122.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 119.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[119.47, -19.47], [120.0, -19.25], [120.25, -19.35], [120.5, -19.25], [120.75, -19.35], [120.82, -19.32], [120.97, -18.97], [121.32, -18.82], [121.35, -18.75], [121.25, -18.5], [121.47, -17.97], [121.82, -17.82], [121.85, -17.75], [121.75, -17.5], [121.85, -17.25], [121.75, -17.0], [121.97, -16.47], [122.5, -16.25], [123.03, -16.47], [123.25, -17.0], [123.15, -17.25], [123.18, -17.32], [123.25, -17.35], [123.5, -17.25], [124.03, -17.47], [124.25, -18.0], [124.04, -18.5], [124.18, -18.82], [124.53, -18.97], [124.68, -19.32], [125.03, -19.47], [125.25, -20.0], [125.03, -20.53], [124.68, -20.68], [124.53, -21.03], [124.0, -21.25], [123.75, -21.15], [123.5, -21.25], [123.25, -21.15], [123.0, -21.25], [122.75, -21.15], [122.5, -21.25], [122.25, -21.15], [122.0, -21.25], [121.75, -21.15], [121.5, -21.25], [121.25, -21.15], [121.0, -21.25], [120.75, -21.15], [120.5, -21.25], [120.25, -21.15], [120.0, -21.25], [119.75, -21.15], [119.5, -21.25], [118.97, -21.03], [118.75, -20.5], [118.97, -19.97], [119.32, -19.82], [119.47, -19.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.25, -19.5], [121.47, -18.97], [122.0, -18.75], [122.53, -18.97], [122.75, -19.5], [122.65, -19.75], [122.75, -20.0], [122.53, -20.53], [122.0, -20.75], [121.47, -20.53], [121.25, -20.0], [121.35, -19.75], [121.25, -19.5]]]]}, "2023-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.47, -19.47], [120.0, -19.25], [120.25, -19.35], [120.5, -19.25], [120.75, -19.35], [120.82, -19.32], [120.97, -18.97], [121.32, -18.82], [121.35, -18.75], [121.25, -18.5], [121.47, -17.97], [121.82, -17.82], [121.85, -17.75], [121.75, -17.5], [121.97, -16.97], [122.5, -16.75], [123.03, -16.97], [123.18, -17.32], [123.25, -17.35], [123.5, -17.25], [124.03, -17.47], [124.25, -18.0], [124.04, -18.5], [124.18, 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27.999884504245017]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4137252956999475, -3.0972706770483907, -2.8761857015257135, -2.815528704512719, -2.5588843988981105, -2.07302014773677]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5975220792865343, -4.0539288468585255, -3.592552954535506, -3.3893945786246036, -3.2471777784005553, -2.101526034192034]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4204335843703206, -1.7931754648153977, -1.6919349279200189, -1.6992989976279993, -1.5051999962053, -1.248337919032827]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4598139647740926, -2.222347551964486, -2.084767236354352, -2.195755728526238, -1.8491313280963118, -1.3011360277889858]}}