{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:28.462284", "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": "2026-Apr-17_to_2026-Apr-20_149.5_-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": 2026040000508}, "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 17 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 20 2026"}, "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": 98396.82517628984}, "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": 149.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "149.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 145.25}, "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": {"2026-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.75, -34.0], [144.97, -33.47], [145.5, -33.25], [145.75, 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[148.82, -35.68], [148.75, -35.65], [148.68, -35.68], [148.57, -35.93], [148.82, -35.82]]]]}, "2026-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.75, -34.0], [144.97, -33.47], [145.5, -33.25], [145.75, -33.35], [146.0, -33.25], [146.5, -33.46], [147.0, -33.25], [147.25, -33.35], [147.5, -33.25], [147.75, -33.35], [148.0, -33.25], [148.53, -33.47], [148.68, -33.82], [148.75, -33.85], [149.0, -33.75], [149.53, -33.97], [149.7, -34.37], [150.0, -34.25], [150.25, -34.35], [150.5, -34.25], [151.03, -34.47], [151.25, -35.0], [151.03, -35.53], [150.68, -35.68], [150.65, -35.75], [150.75, -36.0], [150.65, -36.25], [150.75, -36.5], [150.53, -37.03], [150.18, -37.18], [150.03, -37.53], [149.68, -37.68], [149.53, -38.03], [149.0, -38.25], [148.47, -38.03], [148.25, -37.5], [148.35, -37.25], [148.25, -37.0], [148.35, -36.75], [148.25, -36.5], [148.43, -36.07], [148.18, -36.18], [148.03, -36.53], [147.5, -36.75], [147.0, -36.54], [146.5, -36.75], [146.25, -36.65], 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"Mean t2m anomaly over entire duration", "value": -4.502032533825768}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.964438342232995, 9.38638008313302, 10.346725489950586, 9.158030446370446]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.78415196736654, 5.601261393229208, 6.839115397135458, 9.158030446370446]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.952118044477775, -5.371282381460753, -4.224049054624045, -2.8893092495004566]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.664231542719733, -6.65886305303593, -5.1384788850432415, -2.8893092495004566]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5523759052336958, -2.0566008457879805, -1.6080127294398163, -1.201946412134308]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1564306806141156, -2.4303131114111376, -2.0345120036334094, -1.201946412134308]}}