{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:43.214971", "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-Apr-14_to_2015-Apr-17_115.5_-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": 2015040000588}, "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 14 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 17 2015"}, "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": 66893.15461406091}, "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": ["Indian Ocean"]}, "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": 115.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "115.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 114.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 118.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -34.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.75, -32.5], [114.85, -32.25], [114.75, -32.0], [114.97, -31.47], [115.5, -31.25], [116.03, -31.47], [116.18, -31.82], [116.25, -31.85], [116.5, -31.75], [117.03, -31.97], [117.18, -32.32], [117.53, -32.47], [117.68, -32.82], [118.03, -32.97], [118.18, -33.32], [118.25, -33.35], [118.5, -33.25], [119.03, -33.47], [119.25, -34.0], [119.15, -34.25], [119.25, -34.5], [119.03, -35.03], [118.5, -35.25], [118.25, -35.15], [118.0, -35.25], [117.75, -35.15], [117.5, -35.25], [117.25, -35.15], [117.0, -35.25], [116.75, -35.15], [116.5, -35.25], [116.25, -35.15], [116.0, -35.25], [115.47, -35.03], [115.32, -34.68], [115.25, -34.65], [115.0, -34.75], [114.47, -34.53], [114.25, -34.0], [114.47, -33.47], [114.82, -33.32], [114.96, -33.0], [114.75, -32.5]]]]}, "2015-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.75, -32.5], [114.85, -32.25], [114.75, -32.0], [114.97, -31.47], [115.5, -31.25], [116.03, -31.47], [116.18, -31.82], [116.25, -31.85], [116.5, -31.75], [117.03, -31.97], [117.18, -32.32], [117.53, -32.47], [117.68, -32.82], [118.03, -32.97], [118.18, -33.32], [118.25, -33.35], [118.5, -33.25], [119.03, -33.47], [119.25, -34.0], [119.15, -34.25], [119.25, -34.5], [119.03, -35.03], [118.5, -35.25], [118.25, -35.15], [118.0, -35.25], [117.75, -35.15], [117.5, -35.25], [117.25, -35.15], [117.0, -35.25], [116.75, -35.15], [116.5, -35.25], [116.25, -35.15], [116.0, -35.25], [115.47, -35.03], [115.32, -34.68], [115.25, -34.65], [115.0, -34.75], [114.47, -34.53], [114.25, -34.0], [114.47, -33.47], [114.82, -33.32], [114.96, -33.0], [114.75, -32.5]]]]}, "2015-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.75, -32.5], [114.85, -32.25], [114.75, -32.0], [114.97, -31.47], [115.5, -31.25], [116.03, -31.47], [116.18, -31.82], [116.25, -31.85], [116.5, -31.75], [117.03, -31.97], [117.18, -32.32], [117.53, -32.47], [117.68, -32.82], [118.03, -32.97], [118.18, -33.32], [118.25, -33.35], [118.5, -33.25], [119.03, -33.47], [119.25, -34.0], [119.15, -34.25], [119.25, -34.5], [119.03, -35.03], [118.5, -35.25], [118.25, -35.15], [118.0, -35.25], [117.75, -35.15], [117.5, -35.25], [117.25, -35.15], [117.0, -35.25], [116.75, -35.15], [116.5, -35.25], [116.25, -35.15], [116.0, -35.25], [115.47, -35.03], [115.32, -34.68], [115.25, -34.65], [115.0, -34.75], [114.47, -34.53], [114.25, -34.0], [114.47, -33.47], [114.82, -33.32], [114.96, -33.0], [114.75, -32.5]]]]}, "2015-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.97, -31.47], [115.5, -31.25], [116.03, -31.47], [116.25, -32.0], [116.15, -32.25], [116.25, -32.5], [116.03, -33.03], [115.5, -33.25], [114.97, -33.03], [114.75, -32.5], [114.85, -32.25], [114.75, -32.0], [114.97, -31.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.868498009932239}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.363571651596811}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.989048244931894, 12.840847108520848, 13.181949790512192, 18.008129713600965]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.87959689905108, 11.330090181398475, 11.71072211307552, 17.738105125687866]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.585395979620743, -4.578808553055268, -4.101296406549289, -2.091353853943531]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.868498009932239, -5.28064900646217, -4.799742095125339, -2.1594378548286386]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6349827824089487, -1.6773221409625252, -1.5179577951659706, -1.2941097432365336]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9858602451145488, -1.8939230213176046, -1.648018724496454, -1.332260757176521]}}