{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:27.152234", "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-Jul-27_to_2024-Jul-30_146.5_-41.0"}, "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": 2024070000682}, "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": "July 27 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 30 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": 66015.59348102656}, "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": ["S.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": ["Bass Strait"]}, "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": -41.0}, "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": 146.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "146.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 144.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 148.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -41.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.85, -39.25], [144.75, -39.0], [144.97, -38.47], [145.5, -38.25], [145.75, -38.35], [146.0, -38.25], [146.25, -38.35], [146.5, -38.25], [146.75, -38.35], [147.0, -38.25], [147.25, -38.35], [147.5, -38.25], [148.03, -38.47], [148.25, -39.0], [148.03, -39.53], [147.68, -39.68], [147.65, -39.75], [147.68, -39.82], [148.03, -39.97], [148.25, -40.5], [148.03, -41.03], [147.68, -41.18], [147.53, -41.53], [147.0, -41.75], [146.75, -41.65], [146.5, -41.75], [146.25, -41.65], [146.0, -41.75], [145.75, -41.65], [145.5, -41.75], [145.25, -41.65], [145.0, -41.75], [144.47, -41.53], [144.25, -41.0], [144.47, -40.47], [144.88, -40.3], [144.75, -40.0], [144.85, -39.75], [144.75, -39.5], [144.85, -39.25]]]]}, "2024-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.85, -39.25], [144.75, -39.0], [144.97, -38.47], [145.5, -38.25], [145.75, -38.35], [146.0, -38.25], [146.25, -38.35], [146.5, -38.25], [146.75, -38.35], [147.0, -38.25], [147.25, -38.35], [147.5, -38.25], [148.03, -38.47], [148.25, -39.0], [148.03, -39.53], [147.68, -39.68], [147.65, -39.75], [147.68, -39.82], [148.03, -39.97], [148.18, -40.32], [148.53, -40.47], [148.75, -41.0], [148.65, -41.25], [148.75, -41.5], [148.53, -42.03], [148.0, -42.25], [147.75, -42.15], [147.5, -42.25], [147.25, -42.15], [147.0, -42.25], [146.75, -42.15], [146.5, -42.25], [145.97, -42.03], [145.82, -41.68], [145.75, -41.65], [145.5, -41.75], [145.25, -41.65], [145.0, -41.75], [144.47, -41.53], [144.25, -41.0], [144.47, -40.47], [144.88, -40.3], [144.75, -40.0], [144.85, -39.75], [144.75, -39.5], [144.85, -39.25]]]]}, "2024-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.85, -39.25], [144.75, -39.0], [144.97, -38.47], [145.5, -38.25], [145.75, -38.35], [146.0, -38.25], [146.25, -38.35], [146.5, -38.25], [146.75, -38.35], [147.0, -38.25], [147.25, -38.35], [147.5, -38.25], [148.03, -38.47], [148.25, -39.0], [148.03, -39.53], [147.68, -39.68], [147.65, -39.75], [147.68, -39.82], [148.03, -39.97], [148.18, -40.32], [148.53, -40.47], [148.75, -41.0], [148.65, -41.25], [148.75, -41.5], [148.53, -42.03], [148.0, -42.25], [147.75, -42.15], [147.5, -42.25], [147.25, -42.15], [147.0, -42.25], [146.75, -42.15], [146.5, -42.25], [145.97, -42.03], [145.82, -41.68], [145.75, -41.65], [145.5, -41.75], [145.25, -41.65], [145.0, -41.75], [144.47, -41.53], [144.25, -41.0], [144.47, -40.47], [144.88, -40.3], [144.75, -40.0], [144.85, -39.75], [144.75, -39.5], [144.85, -39.25]]]]}, "2024-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.25, -40.35], [147.5, -40.25], [147.75, -40.35], [148.0, -40.25], [148.53, -40.47], [148.75, -41.0], [148.65, -41.25], [148.75, -41.5], [148.53, -42.03], [148.0, -42.25], [147.75, -42.15], [147.5, -42.25], [147.25, -42.15], [147.0, -42.25], [146.75, -42.15], [146.5, -42.25], [145.97, -42.03], [145.75, -41.5], [145.85, -41.25], [145.75, -41.0], [145.97, -40.47], [146.5, -40.25], [146.75, -40.35], [147.0, -40.25], [147.25, -40.35]]], [[[145.5, -38.25], [145.75, -38.35], [146.0, -38.25], [146.53, -38.47], [146.68, -38.82], [147.03, -38.97], [147.25, -39.5], [147.03, -40.03], [146.5, -40.25], [146.25, -40.15], [146.0, -40.25], [145.75, -40.15], [145.5, -40.25], [144.97, -40.03], [144.75, -39.5], [144.85, -39.25], [144.75, -39.0], [144.97, -38.47], [145.5, -38.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.504189792163572}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.334844357947836}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.075959694552466, 7.938020276539362, 7.703009685832058, 7.095770192194948]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.202141084693835, 1.7883000301411016, 0.7760142409221658, 1.7777661929968076]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0515476983067704, -2.3405246117691445, -2.583165913325794, -2.267188654449683]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0199890313329547, -4.081601164173662, -4.504189792163572, -3.812033533150043]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7996820946924859, -1.755241606421999, -1.9267958405937544, -1.5009716694220634]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3453529765822845, -2.3639616387037465, -2.4719267060750627, -1.7710332820083263]}}