{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:15.153872", "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": "2010-Mar-21_to_2010-Mar-28_147.0_-22.0"}, "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": 2010030000648}, "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": "March 21 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 28 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 60402.3473613174}, "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", "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": -22.0}, "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": 147.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "147.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 144.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 147.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.97, -22.53], [145.75, -22.0], [145.97, -21.47], [146.5, -21.25], [146.75, -21.35], [147.0, -21.25], [147.53, -21.47], [147.75, -22.0], [147.53, -22.53], [147.0, -22.75], [146.75, -22.65], [146.5, -22.75], [145.97, -22.53]]]]}, "2010-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.97, -22.53], [145.75, -22.0], [145.97, -21.47], [146.5, -21.25], [146.75, -21.35], [147.0, -21.25], [147.25, -21.35], [147.5, -21.25], [148.03, -21.47], [148.25, -22.0], [148.03, -22.53], [147.5, -22.75], [147.25, -22.65], [147.0, -22.75], [146.75, -22.65], [146.5, -22.75], [145.97, -22.53]]]]}, "2010-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.97, -20.97], [146.32, -20.82], [146.47, -20.47], [147.0, -20.25], [147.53, -20.47], [147.75, -21.0], [147.63, -21.3], [148.03, -21.47], [148.25, -22.0], [148.03, -22.53], [147.5, -22.75], [147.25, -22.65], [147.0, -22.75], [146.75, -22.65], [146.5, -22.75], [145.97, -22.53], [145.75, -22.0], [145.85, -21.75], [145.75, -21.5], [145.97, -20.97]]]]}, "2010-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.75, -21.5], [143.97, -20.97], [144.32, -20.82], [144.47, -20.47], [144.82, -20.32], [144.97, -19.97], [145.5, -19.75], [145.75, -19.85], [146.0, -19.75], [146.25, -19.85], [146.5, -19.75], [147.03, -19.97], [147.18, -20.32], [147.53, -20.47], [147.75, -21.0], [147.63, -21.3], [148.03, -21.47], [148.25, -22.0], [148.03, -22.53], [147.5, -22.75], [147.25, -22.65], [147.18, -22.68], [147.03, -23.03], [146.5, -23.25], [145.97, -23.03], [145.82, -22.68], [145.75, -22.65], [145.5, -22.75], [145.25, -22.65], [145.0, -22.75], [144.47, -22.53], [144.32, -22.18], [143.97, -22.03], [143.75, -21.5]]]]}, "2010-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.75, -21.5], [143.97, -20.97], [144.32, -20.82], [144.47, -20.47], [144.82, -20.32], [144.97, -19.97], [145.5, -19.75], [145.75, -19.85], [146.0, -19.75], [146.25, -19.85], [146.5, -19.75], [147.03, -19.97], [147.18, -20.32], [147.53, 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.940062682779711, -2.8157735803883193, -2.843290211909982, -3.0041448189448916, -2.8642525601975857, -2.9524729681882955, -3.1238470974338988, -2.967626278283234]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.971835686721022, -2.98106807348654, -3.220080873496272, -3.400037682098173, -3.543704874515356, -3.463372235209704, -3.8714589768587757, -3.245703262543884]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4472130186781431, -1.4053865521685538, -1.5109020459622222, -1.6963253729542607, -1.5840233922306184, -1.5754714192006873, -1.5634261314721902, -1.3969367574631626]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4769304036883901, -1.4512396104341376, -1.6001270099552105, -1.835911983722353, -1.760707595614385, -1.719939428997193, -1.735396576291742, -1.4743558457296957]}}