{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:02.103061", "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": "2022-Sep-27_to_2022-Oct-01_136.0_-19.5"}, "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": 2022090000965}, "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": "September 27 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 01 2022"}, "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": 81149.64333734034}, "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": -19.5}, "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": 136.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "136.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 132.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[133.0, -18.75], [133.25, -18.85], [133.5, -18.75], [133.75, -18.85], [134.0, -18.75], [134.5, -18.96], [135.0, -18.75], [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], [137.04, -20.5], [137.25, -21.0], [137.03, -21.53], [136.5, -21.75], [136.25, -21.65], [136.0, -21.75], [135.75, -21.65], [135.5, -21.75], [135.25, -21.65], [135.18, -21.68], [135.03, -22.03], [134.5, -22.25], [133.97, -22.03], [133.82, -21.68], [133.75, -21.65], [133.5, -21.75], [132.97, -21.53], [132.82, -21.18], [132.75, -21.15], [132.5, -21.25], [131.97, -21.03], [131.75, -20.5], [131.97, -19.97], [132.32, -19.82], [132.35, -19.75], [132.25, -19.5], [132.47, -18.97], [133.0, -18.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.35, -19.75], [132.25, -19.5], [132.47, -18.97], [133.0, -18.75], [133.25, -18.85], [133.5, -18.75], [133.75, -18.85], [134.0, -18.75], [134.53, -18.97], [134.68, -19.32], [134.75, -19.35], [135.0, -19.25], [135.53, -19.47], [135.68, -19.82], [135.75, -19.85], [136.0, -19.75], [136.53, -19.97], [136.68, -20.32], [137.03, -20.47], [137.25, -21.0], [137.03, -21.53], [136.5, -21.75], [136.25, -21.65], [136.0, -21.75], [135.75, -21.65], [135.5, -21.75], [135.25, -21.65], [135.18, -21.68], [135.03, -22.03], [134.5, -22.25], [133.97, -22.03], [133.82, -21.68], [133.75, -21.65], [133.5, -21.75], [132.97, -21.53], [132.82, -21.18], [132.75, -21.15], [132.5, -21.25], [131.97, -21.03], [131.75, -20.5], [131.97, -19.97], [132.32, -19.82], [132.35, -19.75]]]]}, "2022-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.35, -19.75], [132.25, -19.5], [132.47, -18.97], [133.0, -18.75], [133.25, -18.85], [133.5, -18.75], [133.75, -18.85], [134.0, -18.75], [134.5, -18.96], [135.0, -18.75], [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], [137.04, -20.5], [137.25, -21.0], [137.03, -21.53], [136.5, -21.75], [136.25, -21.65], [136.0, -21.75], [135.75, -21.65], [135.5, -21.75], [135.25, -21.65], [135.18, -21.68], [135.03, -22.03], [134.5, -22.25], [133.97, -22.03], [133.82, -21.68], [133.75, -21.65], [133.5, -21.75], [132.97, -21.53], [132.82, -21.18], [132.75, -21.15], [132.5, -21.25], [131.97, -21.03], [131.75, -20.5], [131.97, -19.97], [132.32, -19.82], [132.35, -19.75]]]]}, "2022-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.35, -19.75], [132.25, -19.5], [132.47, -18.97], [133.0, -18.75], [133.25, -18.85], [133.5, -18.75], [133.75, -18.85], [134.0, -18.75], [134.5, -18.96], [135.0, -18.75], [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], [137.04, -20.5], 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-19.5], [134.47, -18.97], [135.0, -18.75], [135.25, -18.85], [135.5, -18.75], [135.75, -18.85], [136.0, -18.75], [136.53, -18.97], [136.75, -19.5], [136.53, -20.03], [136.0, -20.25], [135.75, -20.15], [135.5, -20.25], [135.25, -20.15], [135.0, -20.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.523724918880873}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.043775915645521}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.920462981896094, 19.708295682615415, 21.855155985555427, 24.46066948288876, 24.52525345002192]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.013276574298402, 17.8563376023954, 20.005102155945508, 23.925805437896088, 24.01748003662567]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.812127024095207, -7.414749084501052, -5.427378287214866, -3.7941811613860352, -3.853721676428487]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.903155744904154, -8.523724918880873, -7.041828261883609, -4.092773607792481, -4.117591000048549]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8244936142144519, -2.4612524902920896, -1.8434895546162713, -1.4611017410490803, -1.4503994524855643]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.304619169444373, -3.1055586273042173, -2.585336786069533, -1.6283071044383626, -1.5399000488812786]}}