{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:34.861036", "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": "2026-May-20_to_2026-May-23_145.0_-18.0"}, "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": 2026050000445}, "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": "May 20 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 23 2026"}, "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": 94029.56919364125}, "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": ["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": -18.0}, "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": 145.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "145.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 142.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 147.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.47, -19.03], [142.25, -18.5], [142.47, -17.97], [143.0, 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-15.25], [145.53, -15.47], [145.75, -16.0], [145.65, -16.25], [145.68, -16.32], [146.03, -16.47], [146.25, -17.0], [146.15, -17.25], [146.18, -17.32], [146.53, -17.47], [146.75, -18.0], [146.65, -18.25], [146.75, -18.5], [146.65, -18.75], [146.7, -18.87], [147.0, -18.75], [147.53, -18.97], [147.75, -19.5], [147.53, -20.03], [147.18, -20.18], [147.03, -20.53], [146.5, -20.75], [146.25, -20.65], [146.0, -20.75], [145.47, -20.53], [145.32, -20.18], [144.97, -20.03], [144.82, -19.68], [144.75, -19.65], [144.5, -19.75], [143.97, -19.53], [143.82, -19.18], [143.75, -19.15], [143.5, -19.25], [143.25, -19.15], [143.0, -19.25], [142.47, -19.03]]]]}, "2026-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.47, -19.03], [142.25, -18.5], [142.47, -17.97], [143.0, -17.75], [143.25, -17.85], [143.5, -17.75], [143.75, -17.85], [143.82, -17.82], [143.85, -17.75], [143.82, -17.68], [143.47, -17.53], [143.25, -17.0], [143.46, -16.5], [143.25, -16.0], [143.47, -15.47], [144.0, 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-17.0], [146.15, -17.25], [146.18, -17.32], [146.53, -17.47], [146.75, -18.0], [146.65, -18.25], [146.75, -18.5], [146.53, -19.03], [146.13, -19.2], [146.18, -19.32], [146.53, -19.47], [146.75, -20.0], [146.53, -20.53], [146.0, -20.75], [145.47, -20.53], [145.32, -20.18], [144.97, -20.03], [144.8, -19.62], [144.5, -19.75], [143.97, -19.53], [143.82, -19.18], [143.47, -19.03], [143.25, -18.5], [143.47, -17.97], [143.82, -17.82], [143.85, -17.75], [143.82, -17.68], [143.47, -17.53], [143.25, -17.0], [143.46, -16.5], [143.25, -16.0], [143.47, -15.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.584728478449847}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.045107597289976}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.403059895833337, 17.16519953409835, 17.736070251464923, 17.933876844765564]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.000349934895837, 14.36436487833663, 15.03272399902346, 15.219853973388695]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.7967646338857954, -3.5232963722222586, -2.8987493329600493, -2.7130006069236607]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.5697330598091526, -4.584728478449847, -3.636814005624899, -3.4586847412315365]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3747115122781264, -1.870350332406688, -1.5223272817895972, -1.5137143637008919]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.579838078220973, -2.202826169383908, -1.8559630344416758, -1.9378430723935678]}}