{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:37.147677", "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-Dec-22_to_2021-Dec-25_142.5_-22.0"}, "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": 2021120002460}, "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": "December 22 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 25 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 54287.049739922644}, "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": -22.0}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -21.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[141.25, -20.85], [141.5, -20.75], [141.75, -20.85], [142.0, -20.75], [142.25, -20.85], [142.5, -20.75], [143.03, -20.97], [143.25, -21.5], [143.15, -21.75], [143.18, -21.82], [143.5, -21.96], [144.0, -21.75], [144.53, -21.97], [144.75, -22.5], [144.65, -22.75], [144.75, -23.0], [144.65, -23.25], [144.75, -23.5], [144.53, -24.03], [144.0, -24.25], [143.75, -24.15], [143.5, -24.25], [143.25, -24.15], [143.0, -24.25], [142.47, -24.03], [142.25, -23.5], [142.35, -23.25], [142.32, -23.18], [142.25, -23.15], [142.0, -23.25], [141.75, -23.15], [141.5, -23.25], [140.97, -23.03], [140.82, -22.68], [140.47, -22.53], [140.25, -22.0], [140.35, -21.75], [140.25, -21.5], [140.47, -20.97], [141.0, -20.75], [141.25, -20.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.75, -21.5], [141.97, -20.97], [142.5, -20.75], [143.03, -20.97], [143.25, -21.5], [143.15, -21.75], [143.18, -21.82], [143.5, -21.96], [144.0, -21.75], [144.53, -21.97], [144.75, -22.5], [144.65, -22.75], [144.75, -23.0], [144.65, -23.25], [144.75, -23.5], [144.53, -24.03], [144.0, -24.25], [143.75, -24.15], [143.5, -24.25], [143.25, -24.15], [143.0, -24.25], [142.47, -24.03], [142.25, -23.5], [142.35, -23.25], [142.25, -23.0], [142.35, -22.75], [142.32, -22.68], [141.97, -22.53], [141.75, -22.0], [141.85, -21.75], [141.75, -21.5]]]]}, "2021-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, -21.5], [140.47, -20.97], [141.0, -20.75], [141.25, -20.85], [141.5, -20.75], [141.75, -20.85], [142.0, -20.75], [142.25, -20.85], [142.5, -20.75], [143.03, -20.97], [143.25, -21.5], [143.15, -21.75], [143.18, -21.82], [143.5, -21.96], [144.0, -21.75], [144.53, -21.97], [144.75, -22.5], [144.65, -22.75], [144.75, -23.0], [144.65, -23.25], [144.75, -23.5], [144.53, -24.03], [144.0, -24.25], [143.75, -24.15], [143.5, -24.25], [143.25, -24.15], [143.0, -24.25], [142.47, -24.03], [142.25, -23.5], [142.35, -23.25], [142.32, -23.18], [142.25, -23.15], [142.0, -23.25], [141.75, -23.15], [141.5, -23.25], [140.97, -23.03], [140.82, -22.68], [140.47, -22.53], [140.25, -22.0], [140.35, -21.75], [140.25, -21.5]]]]}, "2021-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, -21.5], [140.47, -20.97], [141.0, -20.75], [141.25, -20.85], [141.5, -20.75], [141.75, -20.85], [142.0, -20.75], [142.25, -20.85], [142.5, -20.75], [143.03, -20.97], [143.25, -21.5], [143.15, -21.75], [143.18, -21.82], [143.5, -21.96], [144.0, -21.75], [144.53, -21.97], [144.75, -22.5], [144.65, -22.75], [144.75, -23.0], [144.65, -23.25], [144.75, -23.5], [144.53, -24.03], [144.0, -24.25], [143.75, -24.15], [143.5, -24.25], [143.25, -24.15], [143.0, -24.25], [142.47, -24.03], [142.25, -23.5], [142.35, -23.25], [142.32, -23.18], [142.25, -23.15], [142.0, -23.25], [141.75, -23.15], [141.5, -23.25], [140.97, -23.03], [140.82, -22.68], [140.47, -22.53], [140.25, -22.0], [140.35, -21.75], [140.25, -21.5]]]]}, "2021-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.25, -21.5], [140.47, -20.97], [141.0, -20.75], [141.25, -20.85], [141.5, -20.75], [141.75, -20.85], [142.0, -20.75], [142.25, -20.85], [142.5, -20.75], [143.03, -20.97], [143.25, -21.5], [143.15, -21.75], [143.25, -22.0], [143.15, -22.25], [143.25, -22.5], [143.03, -23.03], [142.5, -23.25], [142.25, -23.15], [142.0, -23.25], [141.75, -23.15], [141.5, -23.25], [140.97, -23.03], [140.82, -22.68], [140.47, -22.53], [140.25, -22.0], [140.35, -21.75], [140.25, -21.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.096752458955734}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.081838731869603}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [34.17959959891289, 34.611050748565106, 35.1995622382218, 35.007476784069354]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.061126340359806, 35.516521882258246, 36.067395967909476, 35.68716869296526]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.5744310639634875, 3.7735810466536615, 4.551594106812089, 4.26416787498386]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.169517203018302, 4.485519969878453, 5.096752458955734, 4.949659257574638]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2026389877559045, 1.252306619240719, 1.4476891716318236, 1.3195027801802859]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3191589688891683, 1.4004756555832663, 1.7253636186543917, 1.4720592186055463]}}