{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:35.970042", "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-May-27_to_2026-Jun-01_136.5_-12.5"}, "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": 2026050000569}, "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 27 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 01 2026"}, "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": 66243.60364640108}, "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": -12.5}, "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": 136.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "136.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 132.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.75}, "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": {"2026-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.82, -12.32], [135.97, -11.97], [136.5, -11.75], [137.03, -11.97], [137.25, -12.5], [137.03, -13.03], [136.68, -13.18], [136.53, -13.53], [136.18, -13.68], [136.03, -14.03], [135.5, -14.25], [134.97, -14.03], [134.75, -13.5], [134.97, -12.97], [135.32, -12.82], [135.47, -12.47], [135.82, -12.32]]]]}, "2026-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.47, -13.03], [132.25, -12.5], [132.47, -11.97], [133.0, -11.75], [133.25, -11.85], [133.5, -11.75], [133.75, -11.85], [134.0, -11.75], [134.25, -11.85], [134.5, -11.75], [134.75, -11.85], [135.0, -11.75], [135.25, -11.85], [135.5, -11.75], [135.75, -11.85], [136.0, -11.75], [136.25, -11.85], [136.5, -11.75], [137.03, -11.97], [137.25, -12.5], [137.15, -12.75], [137.25, -13.0], [137.03, -13.53], [136.68, -13.68], [136.53, -14.03], [136.18, -14.18], [136.03, -14.53], [135.5, -14.75], [135.25, -14.65], [135.18, -14.68], [135.03, -15.03], [134.5, -15.25], [133.97, -15.03], [133.82, -14.68], [133.47, -14.53], [133.25, -14.0], [133.47, -13.47], [133.82, -13.32], [133.85, -13.25], [133.82, -13.18], [133.75, -13.15], [133.5, -13.25], [133.25, -13.15], [133.0, -13.25], [132.47, -13.03]]]]}, "2026-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.47, -11.47], [133.0, -11.25], [133.25, -11.35], [133.5, -11.25], [134.03, -11.47], [134.18, -11.82], [134.25, -11.85], [134.5, -11.75], [134.75, -11.85], [135.0, -11.75], [135.25, -11.85], [135.5, -11.75], [135.75, -11.85], [136.0, -11.75], [136.25, -11.85], [136.5, -11.75], [137.03, -11.97], [137.25, -12.5], [137.15, -12.75], [137.25, -13.0], [137.03, -13.53], [136.68, -13.68], [136.53, -14.03], [136.18, -14.18], [136.03, -14.53], [135.5, -14.75], [135.25, -14.65], [135.18, -14.68], [135.03, -15.03], [134.5, -15.25], [133.97, -15.03], [133.82, -14.68], [133.47, -14.53], [133.25, -14.0], [133.47, -13.47], [133.82, -13.32], [133.85, -13.25], [133.82, -13.18], [133.75, -13.15], [133.5, -13.25], [133.25, -13.15], [133.0, -13.25], [132.47, -13.03], [132.25, -12.5], [132.35, -12.25], [132.25, -12.0], [132.47, -11.47]]]]}, "2026-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.47, -11.47], [133.0, -11.25], [133.25, -11.35], [133.5, -11.25], [134.03, -11.47], [134.18, -11.82], [134.25, -11.85], [134.5, -11.75], [134.75, -11.85], [135.0, -11.75], [135.25, -11.85], [135.5, -11.75], [135.75, -11.85], [136.0, -11.75], [136.25, -11.85], [136.5, -11.75], [137.03, -11.97], [137.25, -12.5], [137.15, -12.75], [137.25, -13.0], [137.03, -13.53], [136.68, -13.68], [136.53, -14.03], [136.18, -14.18], [136.03, -14.53], [135.5, -14.75], [135.25, -14.65], [135.18, -14.68], [135.03, -15.03], [134.5, -15.25], [133.97, -15.03], [133.82, -14.68], [133.47, -14.53], [133.25, -14.0], [133.47, -13.47], [133.82, -13.32], [133.85, -13.25], [133.82, -13.18], [133.75, -13.15], [133.5, -13.25], [133.25, -13.15], [133.0, -13.25], [132.47, -13.03], [132.25, -12.5], [132.35, -12.25], [132.25, -12.0], [132.47, -11.47]]]]}, "2026-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.97, -13.03], [135.75, -12.5], [135.97, -11.97], [136.5, -11.75], [137.03, -11.97], [137.25, -12.5], [137.03, -13.03], [136.5, -13.25], [135.97, -13.03]]], [[[133.0, -11.25], [133.25, -11.35], [133.5, -11.25], [134.03, -11.47], [134.18, -11.82], [134.53, -11.97], [134.75, -12.5], [134.53, -13.03], [134.0, -13.25], [133.75, -13.15], [133.5, -13.25], [133.25, -13.15], [133.0, -13.25], [132.47, -13.03], [132.25, -12.5], [132.35, -12.25], [132.25, -12.0], [132.47, -11.47], [133.0, -11.25]]]]}, "2026-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.47, -12.53], [132.25, -12.0], [132.47, -11.47], [133.0, -11.25], [133.25, -11.35], [133.5, -11.25], [134.03, -11.47], [134.25, -12.0], [134.03, -12.53], [133.5, -12.75], [133.25, -12.65], [133.0, -12.75], [132.47, -12.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.545471978889168}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1967971002612625}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.5473321702745, 21.505354309082065, 21.384351811264537, 21.01921580921521, 22.467770300971154, 23.104236857096396]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.474551137288415, 19.38740183512374, 18.890510813395224, 19.0559071858724, 21.620656585693382, 23.088978068033896]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.0466731997113166, -3.101669278790351, -3.2575223266889823, -3.5666450997252537, -2.709701501710915, -2.598242476637523]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.4834819102612755, -4.412775610406015, -4.545471978889168, -4.472083785538416, -3.2122630946086588, -2.692097234607388]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.556640753228627, -1.8390689543300667, -1.9182779924962838, -2.0714927089520927, -1.6301243408143211, -1.5567000635084498]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.614380455714365, -2.3046308041349985, -2.6273681132318285, -2.901933514386985, -1.6938768184224504, -1.564568568664828]}}