{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:48.700636", "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-Mar-21_to_2026-Mar-25_132.0_-13.0"}, "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": 2026030000623}, "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 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 25 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 93425.82296276378}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": -13.0}, "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": 132.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "132.0\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": 134.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.75}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[129.32, -13.32], [129.47, -12.97], [130.0, -12.75], [130.3, -12.87], [130.47, -12.47], [130.82, -12.32], [130.87, -12.2], [130.75, -12.15], [130.5, -12.25], [129.97, -12.03], [129.75, -11.5], [129.97, -10.97], [130.5, -10.75], [130.75, -10.85], [131.0, -10.75], [131.25, -10.85], [131.32, -10.82], [131.47, -10.47], [132.0, -10.25], [132.53, -10.47], [132.68, -10.82], [132.75, -10.85], [133.0, -10.75], [133.53, -10.97], [133.68, -11.32], [133.75, -11.35], [134.0, -11.25], [134.53, -11.47], [134.75, -12.0], [134.53, -12.53], [134.18, -12.68], [134.03, -13.03], [133.68, -13.18], [133.53, -13.53], [133.18, -13.68], [133.03, -14.03], [132.5, -14.25], [132.25, -14.15], [132.0, -14.25], [131.75, -14.15], [131.68, -14.18], [131.65, -14.25], [131.75, -14.5], [131.53, -15.03], [131.0, -15.25], [130.75, -15.15], [130.5, -15.25], [130.25, -15.15], [130.0, -15.25], [129.47, -15.03], [129.32, -14.68], [128.97, -14.53], [128.75, -14.0], [128.97, -13.47], [129.32, -13.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.5, -12.25], [129.97, -12.03], [129.75, -11.5], [129.97, -10.97], [130.5, -10.75], [130.75, -10.85], [131.0, -10.75], [131.25, -10.85], [131.5, -10.75], [132.0, -10.96], [132.5, -10.75], [133.03, -10.97], [133.25, -11.5], [133.03, -12.03], [132.5, -12.25], [132.0, -12.04], [131.5, -12.25], [131.25, -12.15], [131.0, -12.25], [130.75, -12.15], [130.5, -12.25]]]]}, "2026-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.97, -14.53], [128.75, -14.0], [128.97, -13.47], [129.32, -13.32], [129.47, -12.97], [130.0, -12.75], [130.3, -12.87], [130.47, -12.47], [130.82, -12.32], [130.88, -12.2], [130.75, -12.15], [130.5, -12.25], [129.97, -12.03], [129.75, -11.5], [129.97, -10.97], [130.5, -10.75], [130.75, -10.85], [131.0, -10.75], [131.25, -10.85], [131.5, -10.75], [132.0, 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[132.75, -11.0], [132.63, -11.3], [133.03, -11.47], [133.25, -12.0], [133.15, -12.25], [133.25, -12.5], [133.03, -13.03], [132.68, -13.18], [132.65, -13.25], [132.75, -13.5], [132.53, -14.03], [132.0, -14.25], [131.75, -14.15], [131.68, -14.18], [131.65, -14.25], [131.75, -14.5], [131.53, -15.03], [131.0, -15.25], [130.75, -15.15], [130.5, -15.25], [129.97, -15.03], [129.8, -14.63], [129.5, -14.75], [128.97, -14.53], [128.75, -14.0], [128.97, -13.47], [129.32, -13.32], [129.47, -12.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.189846169680322}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.084355888774832}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.227062479654933, 25.232086351182716, 25.757967064970273, 26.5163502284459, 26.76001976860897]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.76079457600912, 23.40288441975912, 24.062762196858728, 25.57141265869143, 25.93959197998049]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4807352127851203, -2.7609613220097478, -2.2533894414485776, -1.5266096074260227, -1.4587871764241573]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7555343649673887, -4.189846169680322, -3.5921693509575334, -2.1436850186064476, -1.8660384062563935]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.001110934472253, -2.8387219345490835, -2.369309833478266, -1.595586650919574, -1.5026309243438043]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3466688429583877, -4.0110482429945185, -3.344408535855232, -1.9786887244651867, -1.75276210257665]}}