{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-28 16:19:51.001989", "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-04_to_2026-May-08_135.5_-21.0"}, "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": 2026050000169}, "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 04 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 08 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": 98593.20070317185}, "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": -21.0}, "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": 135.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "135.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 132.25}, "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": -21.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.35, -19.75], [133.25, -19.5], [133.47, -18.97], [134.0, -18.75], [134.25, -18.85], [134.5, -18.75], [134.75, -18.85], [135.0, -18.75], [135.25, -18.85], [135.5, -18.75], [136.03, -18.97], [136.18, -19.32], [136.53, -19.47], [136.68, -19.82], [137.03, -19.97], [137.25, -20.5], [137.15, -20.75], [137.25, -21.0], [137.15, -21.25], [137.25, -21.5], [137.03, -22.03], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.75, -22.15], [135.5, -22.25], [134.97, -22.03], [134.82, -21.68], [134.75, -21.65], [134.5, -21.75], [133.97, -21.53], [133.82, -21.18], [133.47, -21.03], [133.25, -20.5], [133.35, -20.25], [133.25, -20.0], [133.35, -19.75]]]]}, "2026-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.35, -19.75], [133.25, -19.5], [133.47, -18.97], [134.0, -18.75], [134.25, -18.85], [134.5, -18.75], [134.75, -18.85], [135.0, -18.75], [135.25, -18.85], [135.5, -18.75], [136.03, -18.97], [136.18, -19.32], [136.53, -19.47], [136.68, -19.82], [137.03, -19.97], [137.25, -20.5], [137.15, -20.75], [137.25, -21.0], [137.15, -21.25], [137.25, -21.5], [137.03, -22.03], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.75, -22.15], [135.5, -22.25], [134.97, -22.03], [134.82, -21.68], [134.75, -21.65], [134.5, -21.75], [133.97, -21.53], [133.82, -21.18], [133.47, -21.03], [133.25, -20.5], [133.35, -20.25], [133.25, -20.0], [133.35, -19.75]]]]}, "2026-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.75, -20.0], [131.97, -19.47], [132.32, -19.32], [132.35, -19.25], [132.25, -19.0], [132.47, -18.47], [133.0, -18.25], [133.25, -18.35], [133.5, -18.25], [133.75, -18.35], [134.0, -18.25], [134.53, -18.47], [134.68, -18.82], [134.75, -18.85], [135.0, -18.75], [135.25, -18.85], [135.5, -18.75], [136.03, -18.97], [136.18, -19.32], [136.53, -19.47], [136.68, -19.82], [137.03, -19.97], [137.25, -20.5], [137.15, -20.75], [137.25, -21.0], [137.15, -21.25], [137.25, -21.5], [137.03, -22.03], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.75, -22.15], [135.5, -22.25], [134.97, -22.03], [134.82, -21.68], [134.75, -21.65], [134.5, -21.75], [134.25, -21.65], [134.0, -21.75], [133.47, -21.53], [133.32, -21.18], [133.25, -21.15], [133.0, -21.25], [132.47, -21.03], [132.32, -20.68], [131.97, -20.53], [131.75, -20.0]]]]}, "2026-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.75, -20.0], [131.97, -19.47], [132.32, -19.32], [132.35, -19.25], [132.25, -19.0], [132.47, -18.47], [133.0, -18.25], [133.25, -18.35], [133.5, -18.25], [133.75, -18.35], [134.0, -18.25], [134.53, -18.47], [134.68, -18.82], [135.03, -18.97], [135.18, -19.32], [135.53, -19.47], [135.68, -19.82], [136.03, -19.97], [136.18, -20.32], [136.53, -20.47], [136.68, -20.82], [137.03, -20.97], [137.25, -21.5], [137.03, -22.03], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.47, -22.03], [135.32, -21.68], [135.25, -21.65], [135.0, -21.75], [134.75, -21.65], [134.5, -21.75], [134.25, -21.65], [134.0, -21.75], [133.47, -21.53], [133.32, -21.18], [133.25, -21.15], [133.0, -21.25], [132.47, -21.03], [132.32, -20.68], [131.97, -20.53], [131.75, -20.0]]]]}, "2026-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.75, -20.0], [131.97, -19.47], [132.32, -19.32], [132.35, -19.25], [132.25, -19.0], [132.47, -18.47], [133.0, -18.25], [133.25, -18.35], [133.5, -18.25], [133.75, -18.35], [134.0, -18.25], [134.53, -18.47], [134.68, -18.82], [135.03, -18.97], [135.18, -19.32], [135.53, -19.47], [135.68, -19.82], [136.03, -19.97], [136.18, -20.32], [136.53, -20.47], [136.68, -20.82], [137.03, -20.97], [137.25, -21.5], [137.03, -22.03], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.47, -22.03], [135.32, -21.68], [135.25, -21.65], [135.0, -21.75], [134.75, -21.65], [134.5, -21.75], [134.25, -21.65], [134.0, -21.75], [133.47, -21.53], [133.32, -21.18], [133.25, -21.15], [133.0, -21.25], [132.47, -21.03], [132.32, -20.68], [131.97, -20.53], [131.75, -20.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.889880778918155}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.002544194232654}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.985585342628383, 17.247103461666427, 17.65275142894069, 18.09186481573647, 17.42798825777487]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.769938405354821, 15.115688578287802, 15.62384948730471, 16.280889129638695, 14.85986989339193]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.564432652547873, -5.091128985948681, -4.782749188197971, -4.168042810580407, -4.664435787671854]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.889880778918155, -6.264527600045653, -5.438491505839181, -4.511353478921251, -5.93026237255998]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.087429281230341, -1.6414534138412384, -1.5935018973363337, -1.4097218838167873, -1.5465735736710047]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4654928619142997, -1.9747871595863264, -1.7984407950154369, -1.5137161146173879, -1.8783887125969063]}}