{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:03.361529", "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": "2013-Apr-18_to_2013-Apr-21_150.0_-26.0"}, "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": 2013040000659}, "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 18 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 21 2013"}, "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": 82524.83672908045}, "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"]}, "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": -26.0}, "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": 150.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "150.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 149.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 152.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -24.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.97, -27.47], [150.32, -27.32], [150.47, -26.97], 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-26.97], [153.25, -27.5], [153.15, -27.75], [153.25, -28.0], [153.03, -28.53], [152.5, -28.75], [152.25, -28.65], [152.18, -28.68], [152.04, -29.0], [152.25, -29.5], [152.03, -30.03], [151.5, -30.25], [150.97, -30.03], [150.82, -29.68], [150.47, -29.53], [150.25, -29.0], [150.35, -28.75], [150.32, -28.68], [149.97, -28.53], [149.75, -28.0], [149.85, -27.75], [149.75, -27.5], [149.85, -27.25], [149.82, -27.18], [149.75, -27.15], [149.5, -27.25], [148.97, -27.03], [148.75, -26.5], [148.85, -26.25], [148.75, -26.0], [148.97, -25.47]]]]}, "2013-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.97, -25.47], [149.32, -25.32], [149.35, -25.25], [149.25, -25.0], [149.47, -24.47], [150.0, -24.25], [150.53, -24.47], [150.68, -24.82], [151.03, -24.97], [151.18, -25.32], [151.53, -25.47], [151.68, -25.82], [152.03, -25.97], [152.18, -26.32], [152.53, -26.47], [152.68, -26.82], [153.03, -26.97], [153.25, -27.5], [153.15, -27.75], [153.25, -28.0], [153.03, -28.53], [152.5, -28.75], [152.25, -28.65], [152.18, -28.68], [152.04, -29.0], [152.25, -29.5], [152.03, -30.03], [151.5, -30.25], [150.97, -30.03], [150.82, -29.68], [150.47, -29.53], [150.25, -29.0], [150.35, -28.75], [150.32, -28.68], [149.97, -28.53], [149.75, -28.0], [149.85, -27.75], [149.75, -27.5], [149.85, -27.25], [149.82, -27.18], [149.75, -27.15], [149.5, -27.25], [148.97, -27.03], [148.75, -26.5], [148.85, -26.25], [148.75, -26.0], [148.97, -25.47]]]]}, "2013-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.97, -25.47], [149.32, -25.32], [149.35, -25.25], [149.25, -25.0], [149.47, -24.47], [150.0, -24.25], [150.53, -24.47], [150.68, -24.82], [151.03, -24.97], [151.18, -25.32], [151.53, -25.47], [151.68, -25.82], [152.03, -25.97], [152.18, -26.32], [152.53, -26.47], [152.68, -26.82], [153.03, -26.97], [153.25, -27.5], [153.15, -27.75], [153.25, -28.0], [153.03, -28.53], [152.5, -28.75], [151.97, -28.53], [151.82, -28.18], [151.75, -28.15], [151.5, -28.25], [151.25, 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"description": "The daily evolution of mean t2m anomalies.", "value": [-2.485725159409, -3.2051087871290274, -5.615208524658334, -3.291552775868403]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.342381299510066, -5.264601024008016, -7.089584996776978, -4.830659661501613]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3707430474986184, -1.7070049239774823, -2.8491574882849453, -1.6399658211447532]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6773541167119463, -2.764356197987327, -3.434684295762179, -2.243299217200409]}}