{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:51:03.858209", "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": "2024-Feb-14_to_2024-Feb-17_141.0_-18.5"}, "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": 2024020000331}, "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 14 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 17 2024"}, "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": 67398.84453859174}, "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": -18.5}, "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": 141.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "141.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 142.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -17.5], [137.97, -16.97], [138.5, -16.75], [138.75, -16.85], [139.0, -16.75], [139.53, -16.97], [139.68, -17.32], [139.75, -17.35], [140.0, -17.25], [140.25, -17.35], [140.32, -17.32], [140.47, -16.97], [141.0, -16.75], [141.53, -16.97], [141.68, -17.32], [141.75, -17.35], [142.0, -17.25], [142.53, -17.47], [142.75, -18.0], [142.65, -18.25], [142.75, -18.5], [142.53, -19.03], [142.0, -19.25], [141.75, -19.15], [141.5, -19.25], [141.25, -19.15], [141.0, -19.25], [140.47, -19.03], [140.32, -18.68], [140.25, -18.65], [140.0, -18.75], [139.75, -18.65], [139.5, -18.75], [139.25, -18.65], [139.0, -18.75], [138.47, -18.53], [138.32, -18.18], [137.97, -18.03], [137.75, -17.5]]]]}, "2024-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -17.5], [137.97, -16.97], [138.5, -16.75], [138.75, -16.85], [139.0, -16.75], [139.53, -16.97], [139.68, -17.32], [139.75, -17.35], [140.0, -17.25], [140.25, -17.35], [140.32, -17.32], [140.47, -16.97], [141.0, -16.75], [141.53, -16.97], [141.68, -17.32], [141.75, -17.35], [142.0, -17.25], [142.53, -17.47], [142.75, -18.0], [142.65, -18.25], [142.75, -18.5], [142.53, -19.03], [142.18, -19.18], [142.03, -19.53], [141.68, -19.68], [141.53, -20.03], [141.0, -20.25], [140.75, -20.15], [140.5, -20.25], [140.25, -20.15], [140.0, -20.25], [139.75, -20.15], [139.5, -20.25], [139.25, -20.15], [139.0, -20.25], [138.47, -20.03], [138.25, -19.5], [138.47, -18.97], [138.82, -18.82], [138.88, -18.7], [138.47, -18.53], [138.32, -18.18], [137.97, -18.03], [137.75, -17.5]]]]}, "2024-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -17.5], [137.97, -16.97], [138.5, -16.75], [138.75, -16.85], [139.0, -16.75], [139.53, -16.97], [139.68, -17.32], [139.75, -17.35], [140.0, -17.25], [140.25, -17.35], [140.32, -17.32], [140.47, -16.97], [141.0, -16.75], [141.53, -16.97], [141.68, -17.32], [141.75, -17.35], [142.0, -17.25], [142.53, -17.47], [142.75, -18.0], [142.65, -18.25], [142.75, -18.5], [142.53, -19.03], [142.18, -19.18], [142.03, -19.53], [141.68, -19.68], [141.53, -20.03], [141.0, -20.25], [140.75, -20.15], [140.5, -20.25], [140.25, -20.15], [140.0, -20.25], [139.75, -20.15], [139.5, -20.25], [139.25, -20.15], [139.0, -20.25], [138.47, -20.03], [138.25, -19.5], [138.47, -18.97], [138.82, -18.82], [138.88, -18.7], [138.47, -18.53], [138.32, -18.18], [137.97, -18.03], [137.75, -17.5]]]]}, "2024-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.5, -18.25], [139.75, -18.35], [140.0, -18.25], [140.25, -18.35], [140.32, -18.32], [140.47, -17.97], [141.0, -17.75], [141.53, -17.97], [141.68, -18.32], [142.03, -18.47], [142.25, -19.0], [142.03, -19.53], [141.68, -19.68], [141.53, -20.03], [141.0, -20.25], [140.75, -20.15], [140.5, -20.25], [140.25, -20.15], [140.0, -20.25], [139.75, -20.15], [139.5, -20.25], [139.25, -20.15], [139.0, -20.25], [138.47, -20.03], [138.25, -19.5], [138.47, -18.97], [138.82, -18.82], [138.97, -18.47], [139.5, -18.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.562130160310289}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.127200381058058}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.717354690455352, 26.165046472946813, 25.57356588442309, 26.46348022561267]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.238002085087544, 25.082488650334824, 23.71763901428892, 25.523697414276683]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.2695672097567714, -3.0872428937943948, -3.6686512077736286, -3.092189873741957]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4606848199084084, -4.059017981723741, -5.562130160310289, -3.759471079535558]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3717462191783882, -1.6503958670520584, -1.9268529910734495, -1.4292594938420542]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.548940722745917, -2.124916873768098, -2.3487970900807427, -1.529744399164739]}}