{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:08.778902", "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": "2024-Jun-01_to_2024-Jun-03_138.5_-19.0"}, "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": 2024060000023}, "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": "June 01 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 03 2024"}, "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": 104306.15707503894}, "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": -19.0}, "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": 138.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "138.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 141.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[138.0, -17.75], [138.25, -17.85], [138.5, -17.75], [139.03, -17.97], [139.18, -18.32], [139.25, -18.35], [139.5, -18.25], [139.75, -18.35], [140.0, -18.25], [140.53, -18.47], [140.68, -18.82], [141.03, -18.97], [141.18, -19.32], [141.53, -19.47], [141.68, -19.82], [142.03, -19.97], [142.25, -20.5], [142.15, -20.75], [142.25, -21.0], [142.15, -21.25], [142.25, -21.5], [142.03, -22.03], [141.68, -22.18], [141.65, -22.25], [141.75, -22.5], [141.53, -23.03], [141.0, -23.25], [140.75, -23.15], [140.5, -23.25], [139.97, -23.03], [139.82, -22.68], [139.47, -22.53], [139.32, -22.18], [139.25, -22.15], [139.0, -22.25], [138.47, -22.03], [138.25, -21.5], [138.47, -20.97], [138.88, -20.8], [138.82, -20.68], [138.75, -20.65], [138.5, -20.75], [137.97, -20.53], [137.75, -20.0], [137.85, -19.75], [137.82, -19.68], [137.47, -19.53], [137.25, -19.0], [137.35, -18.75], [137.25, -18.5], [137.47, -17.97], [138.0, -17.75]]]]}}, "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": {"2024-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.25, -18.5], [137.47, -17.97], [138.0, -17.75], [138.25, -17.85], [138.5, -17.75], [139.03, -17.97], [139.18, -18.32], [139.25, -18.35], [139.5, -18.25], [139.75, -18.35], [140.0, -18.25], [140.53, -18.47], [140.68, -18.82], [141.03, -18.97], [141.18, -19.32], [141.53, -19.47], [141.68, -19.82], [142.03, -19.97], [142.25, -20.5], [142.15, -20.75], [142.25, -21.0], [142.15, -21.25], [142.25, -21.5], [142.03, -22.03], [141.68, -22.18], [141.65, -22.25], [141.75, -22.5], [141.53, -23.03], [141.0, -23.25], [140.75, -23.15], [140.5, -23.25], [139.97, -23.03], [139.82, -22.68], [139.47, -22.53], [139.32, -22.18], [139.25, -22.15], [139.0, -22.25], [138.47, -22.03], [138.25, -21.5], [138.47, -20.97], [138.88, -20.8], [138.82, -20.68], [138.75, -20.65], [138.5, -20.75], [137.97, -20.53], [137.75, -20.0], [137.85, -19.75], [137.82, -19.68], [137.47, -19.53], [137.25, -19.0], [137.35, -18.75], [137.25, -18.5]]]]}, "2024-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.25, -18.5], [137.47, -17.97], [138.0, -17.75], [138.25, -17.85], [138.5, -17.75], [139.03, -17.97], [139.18, -18.32], [139.25, -18.35], [139.5, -18.25], [139.75, -18.35], [140.0, -18.25], [140.53, -18.47], [140.68, -18.82], [141.03, -18.97], [141.18, -19.32], [141.53, -19.47], [141.68, -19.82], [142.03, -19.97], [142.25, -20.5], [142.15, -20.75], [142.25, -21.0], [142.15, -21.25], [142.25, -21.5], [142.03, -22.03], [141.68, -22.18], [141.65, -22.25], [141.75, -22.5], [141.53, -23.03], [141.0, -23.25], [140.75, -23.15], [140.5, -23.25], [139.97, -23.03], [139.82, -22.68], [139.47, -22.53], [139.32, -22.18], [139.25, -22.15], [139.0, -22.25], [138.47, -22.03], [138.25, -21.5], [138.47, -20.97], [138.88, -20.8], [138.82, -20.68], [138.75, -20.65], [138.5, -20.75], [137.97, -20.53], [137.75, -20.0], [137.85, -19.75], [137.82, -19.68], [137.47, -19.53], [137.25, -19.0], [137.35, -18.75], [137.25, -18.5]]]]}, "2024-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[137.25, -18.5], [137.47, -17.97], [138.0, -17.75], [138.25, -17.85], [138.5, -17.75], [139.03, -17.97], [139.18, -18.32], [139.25, -18.35], [139.5, -18.25], [139.75, -18.35], [140.0, -18.25], [140.53, -18.47], [140.68, -18.82], [141.03, -18.97], [141.18, -19.32], [141.53, -19.47], [141.68, -19.82], [142.03, -19.97], [142.25, -20.5], [142.15, -20.75], [142.25, -21.0], [142.15, -21.25], [142.25, -21.5], [142.03, -22.03], [141.68, -22.18], [141.65, -22.25], [141.75, -22.5], [141.53, -23.03], [141.0, -23.25], [140.75, -23.15], [140.5, -23.25], [139.97, -23.03], [139.82, -22.68], [139.47, -22.53], [139.32, -22.18], [139.25, -22.15], [139.0, -22.25], [138.47, -22.03], [138.25, -21.5], [138.47, -20.97], [138.88, -20.8], [138.82, -20.68], [138.75, -20.65], [138.5, -20.75], [137.97, -20.53], [137.75, -20.0], [137.85, -19.75], [137.82, -19.68], [137.47, -19.53], [137.25, -19.0], [137.35, -18.75], [137.25, -18.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.579810179556091}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.441025356086349}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.404577037717331, 14.407927093542867, 14.85584422095559]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.110578372700388, 12.60338173631493, 12.76873237051393]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.576788505801236, -5.608577790465795, -5.137709771992009]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.247428960922548, -6.579810179556091, -6.022150930800876]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7406613588876674, -1.749331883247334, -1.597473666616192]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9900185173098393, -2.1273573720980616, -1.9933499587035477]}}