{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:23.451962", "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": "2012-May-15_to_2012-May-18_130.0_-20.0"}, "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": 2012050000838}, "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": "May 15 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 18 2012"}, "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": 107021.83365832137}, "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", "N.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": -20.0}, "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": 130.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "130.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 129.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 134.75}, "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": -19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.97, -19.47], [129.32, -19.32], [129.47, -18.97], 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[129.47, -18.97], [130.0, -18.75], [130.25, -18.85], [130.5, -18.75], [130.75, -18.85], [131.0, -18.75], [131.25, -18.85], [131.5, -18.75], [132.0, -18.96], [132.5, -18.75], [133.03, -18.97], [133.18, -19.32], [133.25, -19.35], [133.5, -19.25], [134.03, -19.47], [134.25, -20.0], [134.04, -20.5], [134.18, -20.82], [134.53, -20.97], [134.68, -21.32], [135.03, -21.47], [135.25, -22.0], [135.03, -22.53], [134.5, -22.75], [134.25, -22.65], [134.18, -22.68], [134.03, -23.03], [133.5, -23.25], [132.97, -23.03], [132.75, -22.5], [132.85, -22.25], [132.82, -22.18], [132.75, -22.15], [132.5, -22.25], [132.25, -22.15], [132.0, -22.25], [131.47, -22.03], [131.32, -21.68], [131.25, -21.65], [131.0, -21.75], [130.47, -21.53], [130.32, -21.18], [130.25, -21.15], [130.0, -21.25], [129.75, -21.15], [129.5, -21.25], [128.97, -21.03], [128.75, -20.5], [128.85, -20.25], [128.75, -20.0], [128.97, -19.47]]]]}, "2012-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.97, -19.47], [129.32, -19.32], [129.47, -18.97], [130.0, -18.75], [130.25, -18.85], [130.5, -18.75], [130.75, -18.85], [131.0, -18.75], [131.25, -18.85], [131.5, -18.75], [132.0, -18.96], [132.5, -18.75], [133.03, -18.97], [133.18, -19.32], [133.25, -19.35], [133.5, -19.25], [134.03, -19.47], [134.25, -20.0], [134.04, -20.5], [134.18, -20.82], [134.53, -20.97], [134.68, -21.32], [135.03, -21.47], [135.25, -22.0], [135.03, -22.53], [134.5, -22.75], [134.25, -22.65], [134.18, -22.68], [134.03, -23.03], [133.5, -23.25], [132.97, -23.03], [132.75, -22.5], [132.85, -22.25], [132.82, -22.18], [132.75, -22.15], [132.5, -22.25], [132.25, -22.15], [132.0, -22.25], [131.47, -22.03], [131.32, -21.68], [131.25, -21.65], [131.0, -21.75], [130.47, -21.53], [130.32, -21.18], [130.25, -21.15], [130.0, -21.25], [129.75, -21.15], [129.5, -21.25], [128.97, -21.03], [128.75, -20.5], [128.85, -20.25], [128.75, -20.0], [128.97, -19.47]]]]}, "2012-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.0, -19.25], [130.53, -19.47], [130.75, -20.0], [130.53, -20.53], [130.0, -20.75], [129.47, -20.53], [129.25, -20.0], [129.47, -19.47], [130.0, -19.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.705088475957723}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.263150059527209}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.658453448190699, 14.96721957494583, 15.916900935092258, 17.028254434896667]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.087820858335704, 11.874168330841258, 12.50364008195919, 17.028254434896667]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.132206824061543, 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