{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:50.246328", "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": "2015-Sep-22_to_2015-Sep-24_139.5_-33.0"}, "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": 2015090000766}, "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": "September 22 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 24 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 117694.96025283357}, "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": ["C.Australia", "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": []}, "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": -33.0}, "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": 139.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, -30.97], [139.0, -30.75], [139.3, -30.87], [139.47, -30.47], [140.0, -30.25], [140.5, -30.46], [141.0, -30.25], [141.53, -30.47], [141.68, -30.82], [141.75, -30.85], [141.82, -30.82], [141.97, -30.47], [142.5, -30.25], [142.75, -30.35], [143.0, -30.25], [143.25, -30.35], [143.5, -30.25], [144.03, -30.47], [144.25, -31.0], [144.15, -31.25], [144.18, -31.32], [144.53, -31.47], [144.75, -32.0], [144.53, -32.53], [144.18, -32.68], [144.15, -32.75], [144.25, -33.0], [144.03, -33.53], [143.5, -33.75], [143.25, -33.65], [143.0, -33.75], [142.75, -33.65], [142.5, -33.75], [142.25, -33.65], [142.0, -33.75], [141.75, -33.65], [141.5, -33.75], [141.25, -33.65], [141.0, -33.75], [140.75, -33.65], [140.68, -33.68], [140.53, -34.03], [140.0, -34.25], [139.75, -34.15], [139.5, -34.25], [139.25, -34.15], [139.0, -34.25], [138.47, -34.03], [138.25, -33.5], [138.47, -32.97], [138.82, -32.82], [138.85, -32.75], [138.82, -32.68], [138.47, -32.53], [138.25, -32.0], [138.35, -31.75], [138.25, -31.5], [138.47, -30.97]]]]}, "2015-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, -30.97], [139.0, -30.75], [139.3, -30.87], [139.47, -30.47], [140.0, -30.25], [140.5, -30.46], [141.0, -30.25], [141.53, -30.47], [141.68, -30.82], [141.75, -30.85], [141.82, -30.82], [141.97, -30.47], [142.5, -30.25], [142.75, -30.35], [143.0, -30.25], [143.25, -30.35], [143.5, -30.25], [144.03, -30.47], [144.25, -31.0], [144.15, -31.25], [144.18, -31.32], [144.53, -31.47], [144.75, -32.0], [144.53, -32.53], [144.18, -32.68], [144.15, -32.75], [144.25, -33.0], [144.03, -33.53], [143.5, -33.75], [143.25, -33.65], [143.0, -33.75], [142.75, -33.65], [142.5, -33.75], [142.25, -33.65], [142.0, -33.75], [141.75, -33.65], [141.5, -33.75], [141.25, -33.65], [141.0, -33.75], [140.75, -33.65], [140.68, -33.68], [140.53, -34.03], [140.0, -34.25], [139.75, -34.15], [139.5, -34.25], [139.25, -34.15], [139.0, -34.25], [138.47, -34.03], [138.25, -33.5], [138.47, -32.97], [138.82, -32.82], [138.85, -32.75], [138.82, -32.68], [138.47, -32.53], [138.25, -32.0], [138.35, -31.75], [138.25, -31.5], [138.47, -30.97]]]]}, "2015-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, -30.97], [139.0, -30.75], [139.3, -30.87], [139.47, -30.47], [140.0, -30.25], [140.5, -30.46], [141.0, -30.25], [141.53, -30.47], [141.68, -30.82], [141.75, -30.85], [141.82, -30.82], [141.97, -30.47], [142.5, -30.25], [142.75, -30.35], [143.0, -30.25], [143.25, -30.35], [143.5, -30.25], [144.03, -30.47], [144.25, -31.0], [144.15, -31.25], [144.18, -31.32], [144.53, -31.47], [144.75, -32.0], [144.53, -32.53], [144.18, -32.68], [144.15, -32.75], [144.25, -33.0], [144.03, -33.53], [143.5, -33.75], [143.25, -33.65], [143.0, -33.75], [142.75, -33.65], [142.5, -33.75], [142.25, -33.65], [142.0, -33.75], [141.75, -33.65], [141.5, -33.75], [141.25, -33.65], [141.0, -33.75], [140.75, -33.65], [140.68, -33.68], [140.53, -34.03], [140.0, -34.25], [139.75, -34.15], [139.5, -34.25], [139.25, -34.15], [139.0, -34.25], [138.47, -34.03], [138.25, -33.5], [138.47, -32.97], [138.82, -32.82], [138.85, -32.75], [138.82, -32.68], [138.47, -32.53], [138.25, -32.0], [138.35, -31.75], [138.25, -31.5], [138.47, -30.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.044039028492364}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.302841938516633}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.662636906355488, 10.741118517566463, 11.695915674820412]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.971083582538256, 7.768566023497158, 8.154689635862894]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.898256679041712, -5.817011289270556, -5.19325784723764]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.510888542018108, -7.044039028492364, -5.951216519663319]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3043132050872073, -1.5830842170884423, -1.3770073789744042]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4321005102105844, -1.7545884062090968, -1.5153642156431961]}}