{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:53:27.663634", "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-19_to_2026-May-22_132.0_-18.0"}, "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": 2026050000501}, "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 19 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 22 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": 107940.74859543119}, "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": -18.0}, "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": 130.75}, "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": -20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.5, -16.75], [131.75, -16.85], [132.0, -16.75], [132.53, -16.97], [132.68, -17.32], [133.03, -17.47], [133.18, -17.82], [133.25, -17.85], [133.5, -17.75], [134.03, -17.97], [134.18, -18.32], [134.25, -18.35], [134.5, -18.25], [135.03, -18.47], [135.18, -18.82], [135.25, -18.85], [135.5, -18.75], [135.75, -18.85], [136.0, -18.75], [136.53, -18.97], [136.68, -19.32], [137.03, -19.47], [137.25, -20.0], [137.03, -20.53], [136.68, -20.68], [136.53, -21.03], [136.0, -21.25], [135.75, -21.15], [135.5, -21.25], [135.25, -21.15], [135.0, -21.25], [134.75, -21.15], [134.5, -21.25], [134.25, -21.15], [134.0, -21.25], [133.47, -21.03], [133.32, -20.68], [133.25, -20.65], [133.0, -20.75], [132.47, -20.53], [132.32, -20.18], [131.97, -20.03], [131.82, -19.68], [131.47, -19.53], [131.25, -19.0], [131.35, -18.75], [131.32, -18.68], [131.25, -18.65], [131.0, -18.75], [130.47, -18.53], [130.25, -18.0], [130.47, -17.47], [130.82, -17.32], [130.97, -16.97], [131.5, -16.75]]]]}, "2026-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.5, -16.75], [131.75, -16.85], [132.0, -16.75], [132.53, -16.97], [132.68, -17.32], [133.03, -17.47], [133.18, -17.82], [133.25, -17.85], [133.5, -17.75], [134.03, -17.97], [134.18, -18.32], [134.25, -18.35], [134.5, -18.25], [135.03, -18.47], [135.18, -18.82], [135.25, -18.85], [135.5, -18.75], [135.75, -18.85], [136.0, -18.75], [136.53, -18.97], [136.68, -19.32], [137.03, -19.47], [137.25, -20.0], [137.03, -20.53], [136.68, -20.68], [136.53, -21.03], [136.0, -21.25], [135.75, -21.15], [135.5, -21.25], [135.25, -21.15], [135.0, -21.25], [134.75, -21.15], [134.5, -21.25], [134.25, -21.15], [134.0, -21.25], [133.47, -21.03], [133.32, -20.68], [133.25, -20.65], [133.0, -20.75], [132.47, -20.53], [132.32, -20.18], [131.97, -20.03], [131.82, -19.68], [131.47, -19.53], [131.25, -19.0], [131.35, -18.75], [131.32, -18.68], [131.25, -18.65], [131.0, -18.75], [130.47, -18.53], [130.25, -18.0], [130.47, -17.47], [130.82, -17.32], [130.97, -16.97], [131.5, -16.75]]]]}, "2026-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.5, -16.75], [131.75, -16.85], [132.0, -16.75], [132.53, -16.97], [132.68, -17.32], [133.03, -17.47], [133.18, -17.82], [133.25, -17.85], [133.5, -17.75], [134.03, -17.97], [134.18, -18.32], [134.25, -18.35], [134.5, -18.25], [135.03, -18.47], [135.18, -18.82], [135.25, -18.85], [135.5, -18.75], [135.75, -18.85], [136.0, -18.75], [136.53, -18.97], [136.68, -19.32], [137.03, -19.47], [137.25, -20.0], [137.03, -20.53], [136.68, -20.68], [136.53, -21.03], [136.0, -21.25], [135.75, -21.15], [135.5, -21.25], [135.25, -21.15], [135.0, -21.25], [134.75, -21.15], [134.5, -21.25], [134.25, -21.15], [134.0, -21.25], [133.47, -21.03], [133.32, -20.68], [133.25, -20.65], [133.0, -20.75], [132.47, -20.53], [132.32, -20.18], [131.97, -20.03], [131.82, -19.68], [131.47, -19.53], [131.25, -19.0], [131.35, -18.75], [131.32, -18.68], [131.25, -18.65], [131.0, -18.75], [130.47, -18.53], [130.25, -18.0], [130.47, -17.47], [130.82, -17.32], [130.97, -16.97], [131.5, -16.75]]]]}, "2026-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.97, -20.03], [134.75, -19.5], [134.97, -18.97], [135.5, -18.75], [136.03, -18.97], [136.25, -19.5], [136.03, -20.03], [135.5, -20.25], [134.97, -20.03]]], [[[131.47, -18.53], [131.25, -18.0], [131.47, -17.47], [132.0, -17.25], [132.53, -17.47], [132.75, -18.0], [132.53, -18.53], [132.0, -18.75], [131.47, -18.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.373024503717716}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.248827301808923}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.531778160301428, 17.733803359023113, 17.165750981236386, 18.694019571940146]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.574601745605491, 15.913028971354208, 15.322779591878259, 17.986744181315146]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.232434592408449, -3.991549963568447, -4.547890130373204, -3.779060854727277]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.636265618126856, -4.458738780821193, -5.373024503717716, -3.869751215514725]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5052347360609037, -1.4086892807194846, -1.588652347617169, -1.3138183006515005]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.658260661302492, -1.601195981116583, -1.8332504203837765, -1.3400909239308352]}}