{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:51.408199", "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": "2024-May-31_to_2024-Jun-04_139.5_-36.5"}, "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": 2024050000786}, "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 31 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 2024"}, "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": 52172.89576359022}, "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": -36.5}, "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": 139.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 142.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -38.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -35.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[141.5, -36.25], [141.75, -36.35], [142.0, -36.25], [142.53, -36.47], [142.75, -37.0], [142.53, -37.53], [142.18, -37.68], [142.03, -38.03], [141.68, -38.18], [141.53, -38.53], [141.0, -38.75], [140.75, -38.65], [140.5, -38.75], [139.97, -38.53], [139.82, -38.18], [139.47, -38.03], [139.32, -37.68], [138.97, -37.53], [138.75, -37.0], [138.85, -36.75], [138.75, -36.5], [138.85, -36.25], [138.82, -36.18], [138.75, -36.15], [138.5, -36.25], [137.97, -36.03], [137.75, -35.5], [137.85, -35.25], [137.75, -35.0], [137.97, -34.47], [138.5, -34.25], [138.75, -34.35], [139.0, -34.25], [139.25, -34.35], [139.5, -34.25], [140.03, -34.47], [140.18, -34.82], [140.53, -34.97], [140.68, -35.32], [141.03, -35.47], [141.25, -36.0], [141.13, -36.3], [141.25, -36.35], [141.5, -36.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -35.0], [137.97, -34.47], [138.5, -34.25], [138.75, -34.35], [139.0, -34.25], [139.53, -34.47], [139.75, -35.0], [139.53, -35.53], [139.18, -35.68], [139.03, -36.03], [138.5, -36.25], [137.97, -36.03], [137.75, -35.5], [137.85, -35.25], [137.75, -35.0]]]]}, "2024-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -35.0], [137.97, -34.47], [138.5, -34.25], [138.75, -34.35], [139.0, -34.25], [139.25, -34.35], [139.5, -34.25], [140.03, -34.47], [140.18, -34.82], [140.53, -34.97], [140.68, -35.32], [141.03, -35.47], [141.25, -36.0], [141.03, -36.53], [140.68, -36.68], [140.53, -37.03], [140.0, -37.25], [139.75, -37.15], [139.5, -37.25], [138.97, -37.03], [138.75, -36.5], [138.85, -36.25], [138.82, -36.18], [138.75, -36.15], [138.5, -36.25], [137.97, -36.03], [137.75, -35.5], [137.85, -35.25], [137.75, -35.0]]]]}, "2024-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.75, -35.0], [137.97, -34.47], [138.5, -34.25], [138.75, -34.35], [139.0, -34.25], [139.25, -34.35], [139.5, -34.25], [140.03, -34.47], [140.18, -34.82], [140.53, -34.97], [140.68, -35.32], [141.03, -35.47], [141.25, -36.0], [141.13, -36.3], [141.25, -36.35], [141.5, -36.25], [141.75, -36.35], [142.0, -36.25], [142.53, -36.47], [142.75, -37.0], [142.53, -37.53], [142.18, -37.68], [142.03, -38.03], [141.68, -38.18], [141.53, -38.53], [141.0, -38.75], [140.75, -38.65], [140.5, -38.75], [139.97, -38.53], [139.82, -38.18], [139.47, -38.03], [139.32, -37.68], [138.97, -37.53], [138.75, -37.0], [138.85, -36.75], [138.75, -36.5], [138.85, -36.25], [138.82, -36.18], [138.75, -36.15], [138.5, -36.25], [137.97, -36.03], [137.75, -35.5], [137.85, -35.25], [137.75, -35.0]]]]}, "2024-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, -36.03], [138.25, -35.5], [138.47, -34.97], [138.82, -34.82], [138.97, -34.47], [139.5, -34.25], [140.03, -34.47], [140.18, -34.82], [140.53, -34.97], [140.68, -35.32], [141.03, -35.47], [141.25, -36.0], [141.13, -36.3], [141.25, -36.35], [141.5, -36.25], [141.75, -36.35], [142.0, -36.25], [142.53, -36.47], [142.75, -37.0], [142.53, -37.53], [142.18, -37.68], [142.03, -38.03], [141.68, -38.18], [141.53, -38.53], [141.0, -38.75], [140.75, -38.65], [140.5, -38.75], [139.97, -38.53], [139.82, -38.18], [139.47, -38.03], [139.32, -37.68], [138.97, -37.53], [138.75, -37.0], [138.85, -36.75], [138.75, -36.5], [138.85, -36.25], [138.82, -36.18], [138.47, -36.03]]]]}, "2024-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.75, -36.5], [138.97, -35.97], [139.5, -35.75], [140.03, -35.97], [140.25, -36.5], [140.15, -36.75], [140.18, -36.82], [140.25, -36.85], [140.32, -36.82], [140.47, -36.47], [141.0, -36.25], [141.25, -36.35], [141.5, -36.25], [141.75, -36.35], [142.0, -36.25], [142.53, -36.47], [142.75, -37.0], [142.53, -37.53], [142.18, -37.68], [142.03, -38.03], [141.68, -38.18], [141.53, -38.53], [141.0, -38.75], [140.75, -38.65], [140.5, -38.75], [139.97, -38.53], [139.82, -38.18], [139.47, -38.03], [139.32, -37.68], [138.97, -37.53], [138.75, -37.0], [138.85, -36.75], [138.75, -36.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.843779371335188}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0510006502513294}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.358889166845358, 9.373484937949229, 8.292972706869591, 8.078997116157836, 8.805315469945185]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.5756618667867315, 6.955147007792959, 5.723382239180012, 5.498177274232148, 6.414671334613047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3792197669337725, -2.577093070965754, -3.271528420224919, -3.453276596916775, -2.6288439059486564]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6005685051480896, -3.348667771240116, -4.843779371335188, -4.711149106615096, -3.98078743934218]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.291183329336555, -1.3972448886299675, -1.8523978328577333, -2.0361153929435667, -1.5773220750880612]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4872268042904946, -1.6406145335110043, -2.4395915568900755, -3.009156120083005, -1.9753465740648435]}}