{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:49.076164", "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": "2023-Apr-08_to_2023-Apr-12_141.5_-20.5"}, "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": 2023040000391}, "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": "April 08 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 12 2023"}, "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": 52315.52827706899}, "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": -20.5}, "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": 141.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "141.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 142.25}, "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": -18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, -19.97], [141.5, -19.75], [141.75, -19.85], [142.0, -19.75], [142.53, -19.97], [142.75, -20.5], [142.65, -20.75], [142.75, -21.0], [142.53, -21.53], [142.0, -21.75], [141.75, -21.65], [141.5, -21.75], [140.97, -21.53], [140.75, -21.0], [140.85, -20.75], [140.75, -20.5], [140.97, -19.97]]]]}, "2023-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.85, -19.25], [139.75, -19.0], [139.97, -18.47], [140.32, -18.32], [140.47, -17.97], [141.0, -17.75], [141.53, -17.97], [141.68, -18.32], [141.75, -18.35], [142.0, -18.25], [142.53, -18.47], [142.75, -19.0], [142.54, -19.5], [142.75, -20.0], [142.65, -20.25], [142.75, -20.5], [142.65, -20.75], [142.75, -21.0], [142.65, -21.25], [142.75, -21.5], [142.53, -22.03], [142.0, -22.25], [141.47, -22.03], [141.32, -21.68], [140.97, -21.53], [140.82, -21.18], [140.47, -21.03], [140.32, -20.68], [139.97, -20.53], [139.75, -20.0], [139.85, -19.75], [139.75, -19.5], [139.85, -19.25]]]]}, "2023-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.85, -19.25], [139.75, -19.0], [139.97, -18.47], [140.32, -18.32], [140.47, -17.97], [141.0, -17.75], [141.53, -17.97], [141.68, -18.32], [141.75, -18.35], [142.0, -18.25], [142.53, -18.47], [142.75, -19.0], [142.54, -19.5], [142.75, -20.0], [142.65, -20.25], [142.75, -20.5], [142.65, -20.75], [142.75, -21.0], [142.65, -21.25], [142.75, -21.5], [142.53, -22.03], [142.0, -22.25], [141.47, -22.03], [141.32, -21.68], [140.97, -21.53], [140.82, -21.18], [140.47, -21.03], [140.32, -20.68], [139.97, -20.53], [139.75, -20.0], [139.85, -19.75], [139.75, -19.5], [139.85, -19.25]]]]}, "2023-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.85, -19.25], [139.75, -19.0], [139.97, -18.47], [140.32, -18.32], [140.47, -17.97], [141.0, -17.75], [141.53, -17.97], [141.68, -18.32], [141.75, -18.35], [142.0, -18.25], [142.53, -18.47], [142.75, -19.0], [142.54, -19.5], [142.75, -20.0], [142.65, -20.25], [142.75, -20.5], [142.65, -20.75], [142.75, -21.0], [142.65, -21.25], [142.75, -21.5], [142.53, -22.03], [142.0, -22.25], [141.47, -22.03], [141.32, -21.68], [140.97, -21.53], [140.82, -21.18], [140.47, -21.03], [140.32, -20.68], [139.97, -20.53], [139.75, -20.0], [139.85, -19.75], [139.75, -19.5], [139.85, -19.25]]]]}, "2023-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, -18.47], [141.5, -18.25], [141.75, -18.35], [142.0, -18.25], [142.53, -18.47], [142.75, -19.0], [142.53, -19.53], [142.18, -19.68], [142.03, -20.03], [141.5, -20.25], [140.97, -20.03], [140.75, -19.5], [140.85, -19.25], [140.75, -19.0], [140.97, -18.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.494716523630927}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7077899409521464}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.578374828447636, 23.562445581497002, 23.749507598516743, 24.378271928231072, 25.853667518026214]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.2864757442959, 21.657743379511032, 22.034603807448946, 23.18074321106218, 25.61245521516429]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6427585920357615, -4.286735403049739, -4.020974268679364, -3.295822556048383, -2.246857309981048]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.77090189524165, -5.494716523630927, -5.12515731141076, -4.178539650469986, -2.284743981283725]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3611418562781377, -2.2582311159877215, -2.139020881133787, -1.7590229643570747, -1.2561905423301123]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4393840845374306, -2.8793119787935884, -2.693494607204008, -2.195915326672837, -1.3477400176140781]}}