{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:27:41.155223", "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": "2021-Oct-30_to_2021-Nov-03_130.5_-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": 2021100000924}, "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": "October 30 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 03 2021"}, "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": 77980.78173266498}, "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": 130.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "130.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 129.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 132.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "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": {"2021-10-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.25, -21.0], [129.47, -20.47], [129.82, -20.32], [129.85, -20.25], [129.82, -20.18], [129.47, -20.03], [129.25, -19.5], [129.35, -19.25], [129.25, -19.0], [129.35, -18.75], [129.25, -18.5], [129.47, -17.97], [130.0, -17.75], [130.53, -17.97], [130.7, -18.37], [131.0, -18.25], [131.53, -18.47], [131.75, -19.0], [131.65, -19.25], [131.75, -19.5], [131.63, -19.8], [131.75, -19.85], [132.0, -19.75], [132.53, -19.97], [132.68, -20.32], [133.03, -20.47], [133.25, -21.0], [133.03, -21.53], [132.68, -21.68], [132.65, -21.75], [132.75, -22.0], [132.53, -22.53], [132.0, -22.75], [131.75, -22.65], [131.5, -22.75], [131.25, -22.65], [131.0, -22.75], [130.75, -22.65], [130.5, -22.75], [130.25, -22.65], [130.0, -22.75], [129.75, -22.65], [129.5, -22.75], [128.97, -22.53], [128.75, -22.0], [128.97, -21.47], [129.32, -21.32], [129.35, -21.25], [129.25, -21.0]]]]}, "2021-10-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.25, -21.0], [129.47, -20.47], [129.82, -20.32], [129.85, -20.25], [129.82, -20.18], [129.47, -20.03], [129.25, -19.5], [129.35, -19.25], [129.25, -19.0], [129.35, -18.75], [129.25, -18.5], [129.47, -17.97], [130.0, -17.75], [130.53, -17.97], [130.7, -18.37], [131.0, -18.25], [131.53, -18.47], [131.75, -19.0], [131.65, -19.25], [131.75, -19.5], [131.63, -19.8], [131.75, -19.85], [132.0, -19.75], [132.53, -19.97], [132.68, -20.32], [133.03, -20.47], [133.25, -21.0], [133.03, -21.53], [132.68, -21.68], [132.65, -21.75], [132.75, -22.0], [132.53, -22.53], [132.0, -22.75], [131.75, -22.65], [131.5, -22.75], [131.25, -22.65], [131.0, -22.75], [130.75, -22.65], [130.5, -22.75], [130.25, -22.65], [130.0, -22.75], [129.75, -22.65], [129.5, -22.75], [128.97, -22.53], [128.75, -22.0], [128.97, -21.47], [129.32, -21.32], [129.35, -21.25], [129.25, -21.0]]]]}, "2021-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.25, -21.0], [129.47, -20.47], [129.82, -20.32], [129.85, -20.25], [129.82, -20.18], [129.47, -20.03], [129.25, -19.5], [129.35, -19.25], [129.25, -19.0], [129.35, -18.75], [129.25, -18.5], [129.47, -17.97], [130.0, -17.75], [130.53, -17.97], [130.7, -18.37], [131.0, -18.25], [131.53, -18.47], [131.75, -19.0], [131.65, -19.25], [131.75, -19.5], [131.63, -19.8], [131.75, -19.85], [132.0, -19.75], [132.53, -19.97], [132.68, -20.32], [133.03, -20.47], [133.25, -21.0], [133.03, -21.53], [132.68, -21.68], [132.65, -21.75], [132.75, -22.0], [132.53, -22.53], [132.0, -22.75], [131.75, -22.65], [131.5, -22.75], [131.25, -22.65], [131.0, -22.75], [130.75, -22.65], [130.5, -22.75], [130.25, -22.65], [130.0, -22.75], [129.75, -22.65], [129.5, -22.75], [128.97, -22.53], [128.75, -22.0], [128.97, -21.47], [129.32, -21.32], [129.35, -21.25], [129.25, -21.0]]]]}, "2021-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.5, -20.25], [131.03, -20.47], [131.25, -21.0], [131.03, -21.53], [130.68, -21.68], [130.53, -22.03], [130.0, -22.25], [129.47, -22.03], [129.25, -21.5], [129.47, -20.97], [129.82, -20.82], [129.97, -20.47], [130.5, -20.25]]]]}, "2021-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.5, -20.25], [131.03, -20.47], [131.25, -21.0], [131.03, -21.53], [130.5, -21.75], [129.97, -21.53], [129.75, -21.0], [129.97, -20.47], [130.5, -20.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -12.932838209401098}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.078135922868709}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.783170868451464, 18.281180547078577, 25.267094473905786, 26.250671890521403, 26.037238149446125]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.762038957028096, 16.33563060974228, 23.32966945167908, 25.946173086587407, 26.037238149446125]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.784220945999691, -11.36921767598529, -4.425840445784403, -3.843909580807974, -4.235063529582192]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.196573262857157, -12.932838209401098, -5.4022544494050635, -3.9567933946806875, -4.235063529582192]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0037274193358083, -4.1054685280628895, -1.5878556660819525, -1.3468853630535755, -1.5094686194340143]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.033854386997961, -5.126975395243922, -1.9338277274958025, -1.3583462052277269, -1.5094686194340143]}}