{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:11.067887", "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": "2012-Apr-21_to_2012-Apr-23_122.5_-32.5"}, "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": 2012040001096}, "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": "April 21 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 23 2012"}, "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": 68166.75129367183}, "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": []}, "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": -32.5}, "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": 122.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -33.25}, "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": {"2012-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.5, -30.25], [119.75, -30.35], [120.0, -30.25], [120.53, -30.47], [120.68, -30.82], [120.75, -30.85], [121.0, -30.75], [121.25, -30.85], [121.5, -30.75], [121.75, -30.85], [122.0, -30.75], [122.25, -30.85], [122.5, -30.75], [122.75, -30.85], [123.0, -30.75], [123.53, -30.97], [123.68, -31.32], [124.03, -31.47], [124.18, -31.82], [124.53, -31.97], [124.75, -32.5], [124.53, -33.03], [124.0, -33.25], [123.75, -33.15], [123.68, -33.18], [123.53, -33.53], [123.0, -33.75], [122.75, -33.65], [122.5, -33.75], [122.25, -33.65], [122.0, -33.75], [121.47, -33.53], [121.32, -33.18], [120.97, -33.03], [120.75, -32.5], [120.85, -32.25], [120.82, -32.18], [120.75, -32.15], [120.68, -32.18], [120.53, -32.53], [120.0, -32.75], [119.47, -32.53], [119.32, -32.18], [119.25, -32.15], [119.0, -32.25], [118.47, -32.03], [118.25, -31.5], [118.47, -30.97], [118.82, -30.82], [118.97, -30.47], [119.5, -30.25]]]]}, "2012-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.5, -30.25], [119.75, -30.35], [120.0, -30.25], [120.53, -30.47], [120.68, -30.82], [120.75, -30.85], [121.0, -30.75], [121.25, -30.85], [121.5, -30.75], [121.75, -30.85], [122.0, -30.75], [122.25, -30.85], [122.5, -30.75], [122.75, -30.85], [123.0, -30.75], [123.53, -30.97], [123.68, -31.32], [124.03, -31.47], [124.18, -31.82], [124.53, -31.97], [124.75, -32.5], [124.53, -33.03], [124.0, -33.25], [123.75, -33.15], [123.68, -33.18], [123.53, -33.53], [123.0, -33.75], [122.75, -33.65], [122.5, -33.75], [122.25, -33.65], [122.0, -33.75], [121.47, -33.53], [121.32, -33.18], [120.97, -33.03], [120.75, -32.5], [120.85, -32.25], [120.82, -32.18], [120.75, -32.15], [120.68, -32.18], [120.53, -32.53], [120.0, -32.75], [119.47, -32.53], [119.32, -32.18], [119.25, -32.15], [119.0, -32.25], [118.47, -32.03], [118.25, -31.5], [118.47, -30.97], [118.82, -30.82], [118.97, -30.47], [119.5, -30.25]]]]}, "2012-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.5, -30.25], [119.75, -30.35], [120.0, -30.25], [120.53, -30.47], [120.68, -30.82], [120.75, -30.85], [121.0, -30.75], [121.25, -30.85], [121.5, -30.75], [121.75, -30.85], [122.0, -30.75], [122.25, -30.85], [122.5, -30.75], [122.75, -30.85], [123.0, -30.75], [123.53, -30.97], [123.68, -31.32], [124.03, -31.47], [124.18, -31.82], [124.53, -31.97], [124.75, -32.5], [124.53, -33.03], [124.0, -33.25], [123.75, -33.15], [123.68, -33.18], [123.53, -33.53], [123.0, -33.75], [122.75, -33.65], [122.5, -33.75], [122.25, -33.65], [122.0, -33.75], [121.47, -33.53], [121.32, -33.18], [120.97, -33.03], [120.75, -32.5], [120.85, -32.25], [120.82, -32.18], [120.75, -32.15], [120.68, -32.18], [120.53, -32.53], [120.0, -32.75], [119.47, -32.53], [119.32, -32.18], [119.25, -32.15], [119.0, -32.25], [118.47, -32.03], [118.25, -31.5], [118.47, -30.97], [118.82, -30.82], [118.97, -30.47], [119.5, -30.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.803719008294479}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.137767911026633}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.787339542860366, 13.602707751508206, 13.170594446484017]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.926008763963125, 12.42772207915732, 11.972491601436332]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.077040581297461, -4.05047444409271, -4.285788707689728]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.803719008294479, -4.637973880486641, -4.758464883599856]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3539624013222331, -1.3378071094083215, -1.4572262791697743]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.532114992954889, -1.572951988354738, -1.673549416049087]}}