{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:32.295392", "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-Feb-07_to_2025-Feb-12_142.5_-15.0"}, "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": 2025020000180}, "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": "February 07 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 12 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": 212559.02442471846}, "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": -15.0}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 145.25}, "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": -13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.35, -19.75], [140.25, -19.5], [140.35, -19.25], [140.25, -19.0], [140.47, -18.47], [140.82, -18.32], [140.85, -18.25], [140.75, -18.0], [140.85, -17.75], [140.75, -17.5], [140.97, -16.97], [141.5, -16.75], [142.03, -16.97], [142.18, -17.32], [142.53, -17.47], [142.75, -18.0], [142.65, -18.25], [142.75, -18.5], [142.65, -18.75], [142.75, -19.0], [142.54, -19.5], [142.75, -20.0], [142.53, -20.53], [142.18, -20.68], [142.03, -21.03], [141.5, -21.25], [141.25, -21.15], [141.0, -21.25], [140.47, -21.03], [140.25, -20.5], [140.35, -20.25], [140.25, -20.0], [140.35, -19.75]]]]}, "2025-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.35, -19.75], [140.25, -19.5], [140.35, -19.25], [140.25, -19.0], [140.47, -18.47], [140.82, -18.32], [140.85, -18.25], [140.75, -18.0], [140.85, -17.75], [140.75, -17.5], [140.97, -16.97], [141.32, -16.82], [141.35, -16.75], [141.25, -16.5], [141.35, -16.25], [141.25, -16.0], [141.35, -15.75], [141.25, -15.5], [141.35, -15.25], [141.25, -15.0], [141.35, -14.75], [141.25, -14.5], [141.35, -14.25], [141.25, -14.0], [141.35, -13.75], [141.25, -13.5], [141.47, -12.97], [142.0, -12.75], [142.25, -12.85], [142.5, -12.75], [143.03, -12.97], [143.25, -13.5], [143.15, -13.75], [143.18, -13.82], [143.53, -13.97], [143.75, -14.5], [143.65, -14.75], [143.68, -14.82], [144.03, -14.97], [144.18, -15.32], [144.53, -15.47], [144.75, -16.0], [144.65, -16.25], [144.68, -16.32], [145.03, -16.47], [145.25, -17.0], [145.15, -17.25], [145.25, -17.5], [145.15, -17.75], [145.18, -17.82], [145.53, -17.97], [145.75, -18.5], [145.65, -18.75], [145.75, -19.0], [145.65, -19.25], [145.75, -19.5], [145.53, -20.03], [145.0, -20.25], [144.47, -20.03], [144.32, -19.68], [144.25, -19.65], [144.0, -19.75], [143.75, -19.65], [143.5, -19.75], [143.25, -19.65], [143.0, -19.75], [142.57, -19.57], [142.75, -20.0], [142.53, -20.53], [142.18, -20.68], [142.03, -21.03], [141.5, -21.25], [141.25, -21.15], [141.0, -21.25], [140.47, -21.03], [140.25, -20.5], [140.35, -20.25], [140.25, -20.0], [140.35, -19.75]]]]}, "2025-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.35, -19.75], [140.25, -19.5], [140.35, -19.25], [140.25, -19.0], [140.47, -18.47], [140.82, -18.32], [140.85, -18.25], [140.75, -18.0], [140.85, -17.75], [140.75, -17.5], [140.97, -16.97], [141.32, -16.82], [141.35, -16.75], [141.25, -16.5], [141.35, -16.25], [141.25, -16.0], [141.35, -15.75], [141.25, -15.5], [141.35, -15.25], [141.25, -15.0], [141.35, -14.75], [141.25, -14.5], [141.35, -14.25], [141.25, -14.0], [141.35, -13.75], [141.25, -13.5], [141.47, -12.97], [142.0, -12.75], [142.25, -12.85], [142.5, -12.75], [143.03, -12.97], [143.18, -13.32], [143.53, -13.47], [143.75, -14.0], [143.65, -14.25], [143.75, -14.5], [143.65, -14.75], [143.68, -14.82], [143.75, -14.85], [144.0, -14.75], [144.25, -14.85], [144.5, -14.75], [145.03, -14.97], [145.25, -15.5], [145.15, -15.75], [145.25, -16.0], [145.15, -16.25], [145.18, -16.32], [145.53, -16.47], [145.75, -17.0], [145.53, -17.53], [145.18, -17.68], [145.15, -17.75], [145.18, -17.82], [145.53, -17.97], [145.75, -18.5], [145.65, -18.75], [145.75, -19.0], [145.65, -19.25], [145.75, -19.5], [145.53, -20.03], [145.0, -20.25], [144.47, -20.03], [144.32, -19.68], [144.25, -19.65], [144.0, -19.75], [143.75, -19.65], [143.5, -19.75], [143.25, -19.65], [143.0, -19.75], [142.57, -19.57], [142.75, -20.0], [142.53, -20.53], [142.18, -20.68], [142.03, -21.03], [141.5, -21.25], [141.25, -21.15], [141.0, -21.25], [140.47, -21.03], [140.25, -20.5], [140.35, -20.25], [140.25, -20.0], [140.35, -19.75]]]]}, "2025-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, -16.25], [141.25, -16.0], [141.35, -15.75], [141.25, -15.5], [141.35, -15.25], [141.25, -15.0], [141.35, -14.75], [141.25, -14.5], [141.35, -14.25], [141.25, -14.0], [141.35, -13.75], [141.25, -13.5], [141.47, -12.97], [142.0, -12.75], [142.25, -12.85], [142.5, -12.75], [143.03, -12.97], [143.18, -13.32], [143.53, -13.47], [143.75, -14.0], [143.65, -14.25], [143.75, -14.5], [143.65, -14.75], [143.68, -14.82], [143.75, -14.85], [144.0, -14.75], [144.25, -14.85], [144.5, -14.75], [145.03, -14.97], [145.25, -15.5], [145.15, -15.75], [145.25, -16.0], [145.15, -16.25], [145.18, -16.32], [145.53, -16.47], [145.75, -17.0], [145.53, -17.53], [145.18, -17.68], [145.15, -17.75], [145.18, -17.82], [145.53, -17.97], [145.75, -18.5], [145.65, -18.75], [145.75, -19.0], [145.65, -19.25], [145.75, -19.5], [145.53, -20.03], [145.0, -20.25], [144.47, -20.03], [144.32, -19.68], [144.25, -19.65], [144.0, -19.75], [143.75, -19.65], [143.5, -19.75], [143.25, -19.65], [143.0, -19.75], [142.47, -19.53], [142.32, -19.18], [141.97, -19.03], [141.75, -18.5], [141.85, -18.25], [141.75, -18.0], [141.85, -17.75], [141.82, -17.68], [141.47, -17.53], [141.25, -17.0], [141.35, -16.75], [141.25, -16.5], [141.35, -16.25]]]]}, "2025-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, -14.75], [141.25, -14.5], [141.35, -14.25], [141.25, -14.0], [141.35, -13.75], [141.25, -13.5], [141.47, -12.97], [142.0, -12.75], [142.25, -12.85], [142.5, -12.75], [143.03, -12.97], [143.18, -13.32], [143.53, -13.47], [143.75, -14.0], [143.65, -14.25], [143.75, -14.5], [143.65, -14.75], [143.68, -14.82], [143.75, -14.85], [144.0, -14.75], [144.25, -14.85], [144.5, -14.75], [145.03, -14.97], [145.25, -15.5], [145.15, -15.75], [145.25, -16.0], [145.15, -16.25], [145.18, -16.32], [145.53, -16.47], [145.75, -17.0], [145.53, -17.53], [145.18, -17.68], [145.15, -17.75], [145.18, -17.82], [145.53, -17.97], [145.75, -18.5], [145.65, -18.75], [145.75, -19.0], [145.53, -19.53], [145.0, -19.75], [144.75, -19.65], [144.5, -19.75], [144.25, -19.65], [144.0, -19.75], [143.75, -19.65], [143.5, -19.75], [142.97, -19.53], [142.75, -19.0], [142.85, -18.75], [142.75, -18.5], [142.85, -18.25], [142.75, -18.0], [142.85, -17.75], [142.82, -17.68], [142.47, -17.53], [142.32, -17.18], [141.97, -17.03], [141.75, -16.5], [141.85, -16.25], [141.82, -16.18], [141.47, -16.03], [141.25, -15.5], [141.35, -15.25], [141.25, -15.0], [141.35, -14.75]]]]}, "2025-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, -14.25], [141.25, -14.0], [141.35, -13.75], [141.25, -13.5], [141.47, -12.97], [142.0, -12.75], [142.25, -12.85], [142.5, -12.75], [143.03, -12.97], [143.18, -13.32], [143.53, -13.47], [143.75, -14.0], [143.65, -14.25], [143.75, -14.5], [143.65, -14.75], [143.68, -14.82], [143.75, -14.85], [144.0, -14.75], [144.53, -14.97], [144.75, -15.5], [144.53, -16.03], [144.0, -16.25], [143.75, -16.15], [143.5, -16.25], [143.25, -16.15], [143.0, -16.25], [142.75, -16.15], [142.5, -16.25], [141.97, -16.03], [141.82, -15.68], [141.47, -15.53], [141.25, -15.0], [141.35, -14.75], [141.25, -14.5], [141.35, -14.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.1952795640110025}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4304238352506635}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.37552141462055, 25.256915298616093, 24.937357697663458, 24.82524778870328, 25.047165566903573, 25.322543250189938]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.17346598307296, 22.202073669433616, 22.457376098632835, 22.645979817708337, 22.92453282674154, 24.672841644287132]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.913212809687784, -2.473601737267795, -2.6721411157746666, -2.384259474388052, -2.025077949771417, -2.024134928825231]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.774448495253921, -4.1952795640110025, -3.880399935914852, -3.019582374358947, -2.4489290531070083, -2.3824402451591027]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4391317132125512, -1.6429359651005724, -1.8790305195396182, -1.7886271544332408, -1.5890419124674209, -1.7184629332672727]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5845266610344, -2.0862797050982844, -2.5323445752805367, -2.1693116248010282, -1.9167273064942039, -1.9535282495029567]}}