{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:48.491221", "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-03_to_2022-Sep-05_139.5_-16.0"}, "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": 2022090000206}, "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 03 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 05 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 74436.5175415909}, "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": -16.0}, "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": 139.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 137.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 140.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[136.82, -13.82], [136.97, -13.47], [137.5, -13.25], [138.03, -13.47], [138.18, -13.82], [138.25, -13.85], [138.5, -13.75], [139.03, -13.97], [139.18, -14.32], [139.53, -14.47], [139.68, -14.82], [140.03, -14.97], [140.18, -15.32], [140.53, -15.47], [140.75, -16.0], [140.65, -16.25], [140.68, -16.32], [141.03, -16.47], [141.25, -17.0], [141.03, -17.53], [140.5, -17.75], [140.25, -17.65], [140.0, -17.75], [139.75, -17.65], [139.5, -17.75], [138.97, -17.53], [138.82, -17.18], [138.47, -17.03], [138.32, -16.68], [137.97, -16.53], [137.82, -16.18], [137.75, -16.15], [137.5, -16.25], [136.97, -16.03], [136.82, -15.68], [136.47, -15.53], [136.25, -15.0], [136.35, -14.75], [136.25, -14.5], [136.47, -13.97], [136.82, -13.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.25, -14.5], [136.47, -13.97], [136.82, -13.82], [136.97, -13.47], [137.5, -13.25], [138.03, -13.47], [138.18, -13.82], [138.25, -13.85], [138.5, -13.75], [139.03, -13.97], [139.18, -14.32], [139.53, -14.47], [139.68, -14.82], [140.03, -14.97], [140.18, -15.32], [140.53, -15.47], [140.75, -16.0], [140.65, -16.25], [140.68, -16.32], [141.03, -16.47], [141.25, -17.0], [141.03, -17.53], [140.5, -17.75], [140.25, -17.65], [140.0, -17.75], [139.75, -17.65], [139.5, -17.75], [138.97, -17.53], [138.82, -17.18], [138.47, -17.03], [138.32, -16.68], [137.97, -16.53], [137.82, -16.18], [137.75, -16.15], [137.5, -16.25], [136.97, -16.03], [136.82, -15.68], [136.47, -15.53], [136.25, -15.0], [136.35, -14.75], [136.25, -14.5]]]]}, "2022-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.25, -14.5], [136.47, -13.97], [136.82, -13.82], [136.97, -13.47], [137.5, -13.25], [138.03, -13.47], [138.18, -13.82], [138.25, -13.85], [138.5, -13.75], [139.03, -13.97], [139.18, -14.32], [139.53, -14.47], [139.68, -14.82], [140.03, -14.97], [140.18, -15.32], [140.53, -15.47], [140.75, -16.0], [140.65, -16.25], [140.68, -16.32], [141.03, -16.47], [141.25, -17.0], [141.03, -17.53], [140.5, -17.75], [140.25, -17.65], [140.0, -17.75], [139.75, -17.65], [139.5, -17.75], [138.97, -17.53], [138.82, -17.18], [138.47, -17.03], [138.32, -16.68], [137.97, -16.53], [137.82, -16.18], [137.75, -16.15], [137.5, -16.25], [136.97, -16.03], [136.82, -15.68], [136.47, -15.53], [136.25, -15.0], [136.35, -14.75], [136.25, -14.5]]]]}, "2022-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.25, -14.5], [136.47, -13.97], [136.82, -13.82], [136.97, -13.47], [137.5, -13.25], [138.03, -13.47], [138.18, -13.82], [138.25, -13.85], [138.5, -13.75], [139.03, -13.97], [139.18, -14.32], [139.53, -14.47], [139.68, -14.82], [140.03, -14.97], [140.18, -15.32], [140.53, -15.47], [140.75, -16.0], [140.65, -16.25], [140.68, -16.32], [141.03, -16.47], [141.25, -17.0], [141.03, -17.53], [140.5, -17.75], [140.25, -17.65], [140.0, -17.75], [139.75, -17.65], [139.5, -17.75], [138.97, -17.53], [138.82, -17.18], [138.47, -17.03], [138.32, -16.68], [137.97, -16.53], [137.82, -16.18], [137.75, -16.15], [137.5, -16.25], [136.97, -16.03], [136.82, -15.68], [136.47, -15.53], [136.25, -15.0], [136.35, -14.75], [136.25, -14.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.791801860328519}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.419652637900884}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.727798161704015, 22.631317686081786, 23.063399323234535]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.80439443828425, 22.02657061818286, 22.268425026436944]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4264398123322894, -1.5937943819773295, -1.2387237193930332]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.73431060981693, -1.791801860328519, -1.4930243305536237]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8071728279766097, -1.9874142146402942, -1.5527091314111334]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.220207876967852, -2.2453719339563665, -1.8554528599147484]}}