{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:50.174790", "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_148.5_-36.5"}, "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": 2015090000761}, "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": 62410.46493161231}, "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": ["E.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": -36.5}, "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": 148.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "148.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 146.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 150.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -37.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -33.75}, "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": [[[[147.5, -36.25], [147.75, -36.35], [147.82, -36.32], [147.85, -36.25], [147.75, -36.0], [147.97, -35.47], [148.32, -35.32], [148.47, -34.97], [148.88, -34.8], [148.75, -34.5], [148.97, -33.97], [149.32, -33.82], [149.47, -33.47], [150.0, -33.25], [150.25, -33.35], [150.5, -33.25], [151.03, -33.47], [151.25, -34.0], [151.15, -34.25], [151.25, -34.5], [151.03, -35.03], [150.68, -35.18], [150.65, -35.25], [150.75, -35.5], [150.53, -36.03], [150.18, -36.18], [150.15, -36.25], [150.25, -36.5], [150.15, -36.75], [150.25, -37.0], [150.03, -37.53], [149.68, -37.68], [149.53, -38.03], [149.0, -38.25], [148.75, -38.15], [148.5, -38.25], [148.25, -38.15], [148.0, -38.25], [147.75, -38.15], [147.5, -38.25], [147.25, -38.15], [147.0, -38.25], [146.47, -38.03], [146.25, -37.5], [146.47, -36.97], [146.82, -36.82], [146.97, -36.47], [147.5, -36.25]]]]}, "2015-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.5, -36.25], [147.75, -36.35], [147.82, -36.32], [147.85, -36.25], [147.75, -36.0], [147.97, -35.47], [148.32, -35.32], [148.47, -34.97], [148.88, -34.8], [148.75, -34.5], [148.97, -33.97], [149.32, -33.82], [149.47, -33.47], [150.0, -33.25], [150.25, -33.35], [150.5, -33.25], [151.03, -33.47], [151.25, -34.0], [151.15, -34.25], [151.25, -34.5], [151.03, -35.03], [150.68, -35.18], [150.65, -35.25], [150.75, -35.5], [150.53, -36.03], [150.18, -36.18], [150.15, -36.25], [150.25, -36.5], [150.15, -36.75], [150.25, -37.0], [150.03, -37.53], [149.68, -37.68], [149.53, -38.03], [149.0, -38.25], [148.75, -38.15], [148.5, -38.25], [148.25, -38.15], [148.0, -38.25], [147.75, -38.15], [147.5, -38.25], [147.25, -38.15], [147.0, -38.25], [146.47, -38.03], [146.25, -37.5], [146.47, -36.97], [146.82, -36.82], [146.97, -36.47], [147.5, -36.25]]]]}, "2015-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.5, -36.25], [147.75, -36.35], [147.82, -36.32], [147.85, -36.25], [147.75, -36.0], [147.97, -35.47], [148.32, -35.32], [148.47, -34.97], [148.88, -34.8], [148.75, -34.5], [148.97, -33.97], [149.32, -33.82], [149.47, -33.47], [150.0, -33.25], [150.25, -33.35], [150.5, -33.25], [151.03, -33.47], [151.25, -34.0], [151.15, -34.25], [151.25, -34.5], [151.03, -35.03], [150.68, -35.18], [150.65, -35.25], [150.75, -35.5], [150.53, -36.03], [150.18, -36.18], [150.15, -36.25], [150.25, -36.5], [150.15, -36.75], [150.25, -37.0], [150.03, -37.53], [149.68, -37.68], [149.53, -38.03], [149.0, -38.25], [148.75, -38.15], [148.5, -38.25], [148.25, -38.15], [148.0, -38.25], [147.75, -38.15], [147.5, -38.25], [147.25, -38.15], [147.0, -38.25], [146.47, -38.03], [146.25, -37.5], [146.47, -36.97], [146.82, -36.82], [146.97, -36.47], [147.5, -36.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.758767550618188}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.199579954599516}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.587338311037456, 4.421749166984853, 5.796934661444936]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.8479416185556374, 0.8213832866148891, 2.025470633183204]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.646681218365634, -5.613755745319756, -4.338302900113158]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.758767550618188, -6.682854615183658, -5.277079896689941]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8188390948976585, -1.9197770761248747, -1.4686575418891359]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1717794696903074, -2.3042956605187337, -1.7959650895175645]}}