{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:27.515005", "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": "2025-May-16_to_2025-May-21_134.5_-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": 2025050000316}, "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 16 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 21 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 54203.05796085661}, "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": ["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": ["Arafura Sea"]}, "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": 134.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "134.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 133.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 135.25}, "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": -11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.97, -11.97], [133.32, -11.82], [133.47, -11.47], [134.0, -11.25], [134.53, -11.47], [134.68, -11.82], [134.75, -11.85], [135.0, -11.75], [135.53, -11.97], [135.75, -12.5], [135.65, -12.75], [135.75, -13.0], [135.65, -13.25], [135.75, -13.5], [135.53, -14.03], [135.18, -14.18], [135.03, -14.53], [134.5, -14.75], [133.97, -14.53], [133.82, -14.18], [133.47, -14.03], [133.32, -13.68], [132.97, -13.53], [132.75, -13.0], [132.85, -12.75], [132.75, -12.5], [132.97, -11.97]]]]}, "2025-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.85, -12.75], [132.75, -12.5], [132.97, -11.97], [133.32, -11.82], [133.47, -11.47], [134.0, -11.25], [134.25, -11.35], [134.5, -11.25], [135.03, -11.47], [135.18, -11.82], [135.53, -11.97], [135.75, -12.5], [135.65, -12.75], [135.75, -13.0], [135.65, -13.25], [135.75, -13.5], [135.54, -14.0], [135.75, -14.5], [135.53, -15.03], [135.0, -15.25], [134.47, -15.03], [134.32, -14.68], [134.25, -14.65], [134.0, -14.75], [133.47, -14.53], [133.32, -14.18], [132.97, -14.03], [132.75, -13.5], [132.85, -13.25], [132.75, -13.0], [132.85, -12.75]]]]}, "2025-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.85, -12.75], [132.75, -12.5], [132.97, -11.97], [133.32, -11.82], [133.47, -11.47], [134.0, -11.25], [134.25, -11.35], [134.5, -11.25], [134.75, -11.35], [135.0, -11.25], [135.53, -11.47], [135.75, -12.0], [135.65, -12.25], [135.75, -12.5], [135.65, -12.75], [135.75, -13.0], [135.65, -13.25], [135.75, -13.5], [135.54, -14.0], [135.75, -14.5], [135.53, -15.03], [135.0, -15.25], [134.47, -15.03], [134.32, -14.68], [134.25, -14.65], [134.0, -14.75], [133.47, -14.53], [133.32, -14.18], [132.97, -14.03], [132.75, -13.5], [132.85, -13.25], [132.75, -13.0], [132.85, -12.75]]]]}, "2025-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.85, -12.75], [132.75, -12.5], [132.97, -11.97], [133.32, -11.82], [133.47, -11.47], [134.0, -11.25], [134.25, -11.35], [134.5, -11.25], [134.75, -11.35], [135.0, -11.25], [135.53, -11.47], [135.75, -12.0], [135.65, -12.25], [135.75, -12.5], [135.65, -12.75], [135.75, -13.0], [135.65, -13.25], [135.75, -13.5], [135.54, -14.0], [135.75, -14.5], [135.53, -15.03], [135.0, -15.25], [134.47, -15.03], [134.32, -14.68], [134.25, -14.65], [134.0, -14.75], [133.47, -14.53], [133.32, -14.18], [132.97, -14.03], [132.75, -13.5], [132.85, -13.25], [132.75, -13.0], [132.85, -12.75]]]]}, "2025-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.97, -11.47], [134.5, -11.25], [134.75, -11.35], [135.0, -11.25], [135.53, -11.47], [135.75, -12.0], [135.53, -12.53], [135.13, -12.7], [135.25, -13.0], [135.03, -13.53], [134.5, -13.75], [133.97, -13.53], [133.75, -13.0], [133.96, -12.5], [133.75, -12.0], [133.97, -11.47]]]]}, "2025-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.47, -11.47], [135.0, -11.25], [135.53, -11.47], [135.75, -12.0], [135.53, -12.53], [135.13, -12.7], [135.25, -13.0], [135.03, -13.53], [134.5, -13.75], [133.97, -13.53], [133.75, -13.0], [133.97, -12.47], [134.38, -12.3], [134.25, -12.0], [134.47, -11.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.15216193391899}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.8515488687904145}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.065194408710227, 22.61807381125061, 21.093852685998968, 22.57809275874382, 24.674183993869406, 24.08677190144857]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.725087738037132, 20.96383438110354, 19.361304219563806, 20.515515899658226, 23.096493021647177, 22.79917424519857]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.321150864646278, -2.583082002674119, -4.1323504586313975, -2.6004043004685053, -1.3087069741002892, -1.6284539060793293]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.946265539855233, -3.549174842283435, -5.15216193391899, -3.396740323890981, -2.011281547269391, -2.2625092839120953]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5607631244599884, -1.6318061757590845, -2.707266555584863, -1.676919557896014, -1.2058351581203597, -1.317301077377266]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8268553436896504, -1.8675268874371012, -3.157981476442435, -1.8877177945461783, -1.280246438974269, -1.4067088250279924]}}