{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:47.230685", "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-Jan-21_to_2023-Jan-25_146.5_-44.5"}, "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": 2023010002614}, "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": "January 21 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 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": "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": 293357.8285832027}, "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": ["East Tasman Plateau", "Indian Ocean", "Tasman Sea"]}, "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": -44.5}, "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": 146.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "146.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 155.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -48.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -42.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[148.32, -45.32], [148.47, -44.97], [148.88, -44.8], [148.75, -44.5], [148.85, -44.25], [148.82, -44.18], [148.75, -44.15], [148.5, -44.25], [148.25, -44.15], [148.18, -44.18], [148.03, -44.53], [147.68, -44.68], [147.53, -45.03], [147.0, -45.25], [146.75, -45.15], [146.5, -45.25], [146.25, -45.15], [146.18, -45.18], [146.15, -45.25], [146.25, -45.5], [146.15, -45.75], [146.25, -46.0], [146.03, -46.53], [145.5, -46.75], [145.25, -46.65], [145.0, -46.75], [144.75, -46.65], [144.5, -46.75], [144.25, -46.65], [144.0, -46.75], [143.75, -46.65], [143.5, -46.75], [143.25, -46.65], [143.0, -46.75], [142.75, -46.65], [142.5, -46.75], [142.25, -46.65], [142.0, -46.75], [141.75, -46.65], [141.5, -46.75], [140.97, -46.53], [140.75, -46.0], [140.85, -45.75], [140.75, -45.5], [140.97, -44.97], [141.5, -44.75], [141.75, -44.85], [142.0, -44.75], [142.25, -44.85], [142.5, -44.75], [142.75, -44.85], [143.0, -44.75], [142.47, -44.53], [142.25, -44.0], [142.35, -43.75], [142.25, -43.5], [142.35, -43.25], [142.32, -43.18], [141.97, -43.03], [141.75, -42.5], [141.97, -41.97], [142.5, -41.75], [142.75, -41.85], [143.0, -41.75], [143.25, -41.85], [143.5, -41.75], [143.75, -41.85], [144.0, -41.75], [144.53, -41.97], [144.68, -42.32], [144.75, -42.35], [145.0, -42.25], [145.53, -42.47], [145.68, -42.82], [145.75, -42.85], [146.0, -42.75], [146.53, -42.97], [146.68, -43.32], [146.75, -43.35], [147.0, -43.25], [147.25, -43.35], [147.32, -43.32], [147.47, -42.97], [147.82, -42.82], [147.97, -42.47], [148.5, -42.25], [149.03, -42.47], [149.18, -42.82], [149.25, -42.85], [149.5, -42.75], [150.0, -42.96], [150.5, -42.75], [151.03, -42.97], [151.18, -43.32], [151.25, -43.35], [151.32, -43.32], [151.47, -42.97], [152.0, -42.75], [152.53, -42.97], [152.75, -43.5], [152.53, -44.03], [152.18, -44.18], [152.15, -44.25], [152.25, -44.5], [152.15, -44.75], [152.2, -44.87], [152.5, -44.75], [152.75, -44.85], [153.0, -44.75], [153.53, -44.97], [153.68, -45.32], [153.75, -45.35], [153.82, -45.32], [153.97, -44.97], [154.5, -44.75], [155.03, -44.97], [155.18, -45.32], [155.53, -45.47], [155.75, -46.0], [155.65, -46.25], [155.75, -46.5], [155.53, -47.03], [155.0, -47.25], [154.75, -47.15], [154.68, -47.18], [154.53, -47.53], [154.0, -47.75], [153.75, -47.65], [153.5, -47.75], [153.25, -47.65], [153.18, -47.68], [153.03, -48.03], [152.5, -48.25], [152.25, -48.15], [152.0, -48.25], [151.7, -48.12], [151.53, -48.53], [151.0, -48.75], [150.75, -48.65], [150.5, -48.75], [150.25, -48.65], [150.0, -48.75], [149.75, -48.65], [149.5, -48.75], [149.25, -48.65], [149.0, -48.75], [148.47, -48.53], [148.25, -48.0], [148.35, -47.75], [148.32, -47.68], [147.97, -47.53], [147.75, -47.0], [147.85, -46.75], [147.75, -46.5], [147.85, -46.25], [147.75, -46.0], [147.97, -45.47], [148.32, -45.32]], [[143.25, -44.85], [143.32, -44.82], [143.35, -44.75], [143.32, -44.68], [143.25, -44.65], [143.0, -44.75], [143.25, -44.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Australia", "New-Zealand", "Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.47, -42.97], [152.0, -42.75], [152.53, -42.97], [152.75, -43.5], [152.53, -44.03], [152.0, -44.25], [151.47, -44.03], [151.25, -43.5], [151.47, -42.97]]]]}, "2023-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.75, -45.5], [140.97, -44.97], [141.5, -44.75], [141.75, -44.85], [142.0, -44.75], [142.25, -44.85], [142.5, -44.75], [142.75, -44.85], [143.0, -44.75], [142.47, -44.53], [142.25, -44.0], [142.35, -43.75], [142.25, -43.5], [142.35, -43.25], [142.32, -43.18], [141.97, -43.03], [141.75, -42.5], [141.97, -41.97], [142.5, -41.75], [142.75, -41.85], [143.0, -41.75], [143.25, -41.85], [143.5, -41.75], [143.75, -41.85], [144.0, -41.75], [144.53, -41.97], [144.68, -42.32], [144.75, -42.35], [145.0, -42.25], [145.53, -42.47], [145.68, -42.82], [145.75, -42.85], [146.0, -42.75], [146.53, -42.97], [146.68, -43.32], [146.75, -43.35], [147.0, -43.25], [147.25, -43.35], [147.32, -43.32], [147.47, -42.97], [147.82, -42.82], [147.97, -42.47], [148.5, -42.25], [149.03, -42.47], [149.2, -42.87], [149.5, -42.75], [150.0, -42.96], [150.5, -42.75], [151.03, -42.97], [151.18, -43.32], [151.25, -43.35], [151.32, -43.32], [151.47, -42.97], [152.0, -42.75], [152.53, -42.97], [152.75, -43.5], [152.53, -44.03], [152.18, -44.18], [152.15, -44.25], [152.25, -44.5], [152.03, -45.03], [151.5, -45.25], [151.25, -45.15], [151.0, -45.25], [150.75, -45.15], [150.5, -45.25], [150.25, -45.15], [150.0, -45.25], [149.75, -45.15], [149.5, -45.25], [148.97, -45.03], [148.75, -44.5], [148.96, -44.0], [148.8, -43.62], [148.68, -43.68], [148.53, -44.03], [148.18, -44.18], [148.03, -44.53], [147.68, -44.68], [147.53, -45.03], [147.0, -45.25], [146.75, -45.15], [146.5, -45.25], [146.25, -45.15], [146.18, -45.18], [146.15, -45.25], [146.25, -45.5], [146.15, -45.75], [146.25, -46.0], [146.03, -46.53], [145.5, -46.75], [145.25, -46.65], [145.0, -46.75], [144.75, -46.65], [144.5, -46.75], [144.25, -46.65], [144.0, -46.75], [143.75, -46.65], [143.5, -46.75], [143.25, -46.65], [143.0, -46.75], [142.75, -46.65], [142.5, -46.75], [142.25, -46.65], [142.0, -46.75], [141.75, -46.65], [141.5, -46.75], [140.97, -46.53], [140.75, -46.0], [140.85, -45.75], [140.75, -45.5]], [[143.25, -44.85], [143.32, -44.82], [143.35, -44.75], [143.32, -44.68], [143.25, -44.65], [143.0, -44.75], [143.25, -44.85]]]]}, "2023-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.75, -45.5], [140.97, -44.97], [141.5, -44.75], [141.75, -44.85], [142.0, -44.75], [142.25, -44.85], [142.5, -44.75], [142.75, -44.85], [143.0, -44.75], [142.47, -44.53], [142.25, -44.0], [142.35, -43.75], [142.25, -43.5], [142.35, -43.25], [142.32, -43.18], [141.97, -43.03], [141.75, -42.5], [141.97, -41.97], [142.5, -41.75], [142.75, -41.85], [143.0, -41.75], [143.25, -41.85], [143.5, -41.75], [143.75, -41.85], [144.0, -41.75], [144.53, -41.97], [144.68, -42.32], [144.75, -42.35], [145.0, -42.25], [145.53, -42.47], [145.68, -42.82], [145.75, -42.85], [146.0, -42.75], [146.53, -42.97], [146.68, -43.32], [146.75, -43.35], [147.0, -43.25], [147.25, -43.35], [147.32, -43.32], [147.47, -42.97], [147.82, -42.82], [147.97, -42.47], [148.5, -42.25], [149.03, -42.47], [149.18, -42.82], [149.25, -42.85], [149.5, -42.75], [150.0, -42.96], [150.5, -42.75], [151.03, -42.97], [151.18, -43.32], [151.25, -43.35], [151.32, -43.32], [151.47, -42.97], [152.0, -42.75], [152.53, -42.97], [152.75, -43.5], [152.53, -44.03], [152.18, -44.18], [152.15, -44.25], [152.25, -44.5], [152.15, -44.75], [152.2, -44.87], [152.5, -44.75], [152.75, -44.85], [153.0, -44.75], [153.53, -44.97], [153.68, -45.32], [153.75, -45.35], [153.82, -45.32], [153.97, -44.97], [154.5, -44.75], [155.03, -44.97], [155.18, -45.32], [155.53, -45.47], [155.75, -46.0], [155.65, -46.25], [155.75, -46.5], [155.53, -47.03], [155.0, -47.25], [154.75, -47.15], [154.68, -47.18], [154.53, -47.53], [154.0, -47.75], [153.75, -47.65], [153.5, -47.75], [153.25, -47.65], [153.18, -47.68], [153.03, -48.03], [152.5, -48.25], [152.25, -48.15], [152.0, -48.25], [151.7, -48.12], [151.53, -48.53], [151.0, -48.75], [150.75, -48.65], [150.5, -48.75], [150.25, -48.65], [150.0, -48.75], [149.75, -48.65], [149.5, -48.75], [149.25, -48.65], [149.0, -48.75], [148.47, -48.53], [148.25, -48.0], [148.35, -47.75], [148.32, -47.68], [147.97, -47.53], [147.75, -47.0], [147.85, -46.75], [147.75, -46.5], [147.85, -46.25], [147.75, -46.0], [147.97, -45.47], [148.32, -45.32], [148.47, -44.97], [148.88, -44.8], [148.75, -44.5], [148.85, -44.25], [148.82, -44.18], [148.75, -44.15], [148.5, -44.25], [148.25, -44.15], [148.18, -44.18], [148.03, -44.53], [147.68, -44.68], [147.53, -45.03], [147.0, -45.25], [146.75, -45.15], [146.5, -45.25], [146.25, -45.15], [146.18, -45.18], [146.15, -45.25], [146.25, -45.5], [146.15, -45.75], [146.25, -46.0], [146.03, -46.53], [145.5, -46.75], [145.25, -46.65], [145.0, -46.75], [144.75, -46.65], [144.5, -46.75], [144.25, -46.65], [144.0, -46.75], [143.75, -46.65], [143.5, -46.75], [143.25, -46.65], [143.0, -46.75], [142.75, -46.65], [142.5, -46.75], [142.25, -46.65], [142.0, -46.75], [141.75, -46.65], [141.5, -46.75], [140.97, -46.53], [140.75, -46.0], [140.85, -45.75], [140.75, -45.5]], [[143.25, -44.85], [143.32, -44.82], [143.35, -44.75], [143.32, -44.68], [143.25, -44.65], [143.0, -44.75], [143.25, -44.85]]]]}, "2023-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.75, -45.5], [140.97, -44.97], [141.5, -44.75], [141.75, -44.85], [142.0, -44.75], [142.25, -44.85], [142.5, -44.75], [142.75, -44.85], [143.0, -44.75], [142.47, -44.53], [142.25, -44.0], [142.35, -43.75], [142.25, -43.5], [142.35, -43.25], [142.32, -43.18], [141.97, -43.03], [141.75, -42.5], [141.97, -41.97], [142.5, -41.75], [142.75, -41.85], [143.0, -41.75], [143.25, -41.85], [143.5, -41.75], [143.75, -41.85], [144.0, -41.75], [144.53, -41.97], [144.68, -42.32], [144.75, -42.35], [145.0, -42.25], [145.53, -42.47], [145.68, -42.82], [145.75, -42.85], [146.0, -42.75], [146.53, -42.97], [146.68, -43.32], [146.75, -43.35], [147.0, -43.25], [147.25, -43.35], [147.32, -43.32], [147.47, -42.97], [147.82, -42.82], [147.97, -42.47], [148.5, -42.25], [149.03, -42.47], [149.18, -42.82], [149.25, -42.85], [149.5, -42.75], [150.0, -42.96], [150.5, -42.75], [151.03, -42.97], [151.18, -43.32], [151.25, -43.35], [151.5, -43.25], [152.03, -43.47], [152.25, -44.0], [152.15, -44.25], [152.25, -44.5], [152.15, -44.75], [152.2, -44.87], [152.5, -44.75], [152.75, -44.85], [153.0, -44.75], [153.53, -44.97], [153.68, -45.32], [153.75, -45.35], [153.82, -45.32], [153.97, -44.97], [154.5, -44.75], [155.03, -44.97], [155.18, -45.32], [155.53, -45.47], [155.75, -46.0], [155.65, -46.25], [155.75, -46.5], [155.53, -47.03], [155.0, -47.25], [154.75, -47.15], [154.68, -47.18], [154.53, -47.53], [154.0, -47.75], [153.75, -47.65], [153.5, -47.75], [153.25, -47.65], [153.18, -47.68], [153.03, -48.03], [152.5, -48.25], [152.25, -48.15], [152.0, -48.25], [151.7, -48.12], [151.53, -48.53], [151.0, -48.75], [150.75, -48.65], [150.5, -48.75], [150.25, -48.65], [150.0, -48.75], [149.75, -48.65], [149.5, -48.75], [149.25, -48.65], [149.0, -48.75], [148.47, -48.53], [148.25, -48.0], [148.35, -47.75], [148.32, -47.68], [147.97, -47.53], [147.75, -47.0], [147.85, -46.75], [147.75, -46.5], [147.85, -46.25], [147.75, -46.0], [147.97, -45.47], [148.32, -45.32], [148.47, -44.97], [148.88, -44.8], [148.75, -44.5], [148.85, -44.25], [148.82, -44.18], [148.75, -44.15], [148.5, -44.25], [148.25, -44.15], [148.18, -44.18], [148.03, -44.53], [147.68, -44.68], [147.53, -45.03], [147.0, -45.25], [146.75, -45.15], [146.5, -45.25], [146.25, -45.15], [146.18, -45.18], [146.15, -45.25], [146.25, -45.5], [146.15, -45.75], [146.25, -46.0], [146.03, -46.53], [145.5, -46.75], [145.25, -46.65], [145.0, -46.75], [144.75, -46.65], [144.5, -46.75], [144.25, -46.65], [144.0, -46.75], [143.75, -46.65], [143.5, -46.75], [143.25, -46.65], [143.0, -46.75], [142.75, -46.65], [142.5, -46.75], [142.25, -46.65], [142.0, -46.75], [141.75, -46.65], [141.5, -46.75], [140.97, -46.53], [140.75, -46.0], [140.85, -45.75], [140.75, -45.5]], [[143.25, -44.85], [143.32, -44.82], [143.35, -44.75], [143.32, -44.68], [143.25, -44.65], [143.0, -44.75], [143.25, -44.85]]]]}, "2023-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.85, -46.25], [147.75, -46.0], [147.97, -45.47], [148.32, -45.32], [148.47, -44.97], [148.88, -44.8], [148.75, -44.5], [148.85, -44.25], [148.82, -44.18], [148.75, -44.15], [148.5, -44.25], [147.97, -44.03], [147.75, -43.5], [147.85, -43.25], [147.75, -43.0], [147.97, -42.47], [148.5, -42.25], [149.03, -42.47], [149.18, -42.82], [149.25, -42.85], [149.5, -42.75], [150.0, -42.96], [150.5, -42.75], [151.03, -42.97], [151.18, -43.32], [151.25, -43.35], [151.5, -43.25], [152.03, -43.47], [152.25, -44.0], [152.15, -44.25], [152.25, -44.5], [152.15, -44.75], [152.2, -44.87], [152.5, -44.75], [152.75, -44.85], [153.0, -44.75], [153.53, -44.97], [153.68, -45.32], [153.75, -45.35], [153.82, -45.32], [153.97, -44.97], [154.5, -44.75], [155.03, -44.97], [155.18, -45.32], [155.53, -45.47], [155.75, -46.0], [155.65, -46.25], [155.75, -46.5], [155.53, -47.03], [155.0, -47.25], [154.75, -47.15], [154.68, -47.18], [154.53, -47.53], [154.0, -47.75], [153.75, -47.65], [153.5, -47.75], [153.25, -47.65], [153.18, -47.68], [153.03, -48.03], [152.5, -48.25], [152.25, -48.15], [152.0, -48.25], [151.7, -48.12], [151.53, -48.53], [151.0, -48.75], [150.75, -48.65], [150.5, -48.75], [150.25, -48.65], [150.0, -48.75], [149.75, -48.65], [149.5, -48.75], [149.25, -48.65], [149.0, -48.75], [148.47, -48.53], [148.25, -48.0], [148.35, -47.75], [148.32, -47.68], [147.97, -47.53], [147.75, -47.0], [147.85, -46.75], [147.75, -46.5], [147.85, -46.25]]], [[[145.47, -43.47], [146.0, -43.25], [146.53, -43.47], [146.68, -43.82], [146.75, -43.85], [147.0, -43.75], [147.53, -43.97], [147.75, -44.5], [147.53, -45.03], [147.0, -45.25], [146.75, -45.15], [146.5, -45.25], [146.25, -45.15], [146.0, -45.25], [145.47, -45.03], [145.25, -44.5], [145.35, -44.25], [145.25, -44.0], [145.47, -43.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.8131739690344375}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.20995912623333}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.919539355481277, 15.409626450569476, 15.646621256722256, 15.596714675426995, 15.08631979967754]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.919539355481277, 17.743108900660843, 18.276180132181253, 17.877400601929423, 18.201166469193424]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.8738119379240175, 1.791756402581409, 2.4673512179147634, 2.387720066029226, 1.8517181117290358]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.8738119379240175, 2.2622201603093117, 3.390288288534123, 3.8131739690344375, 2.4819392169213756]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.334192185227862, 1.5140468070788964, 2.0629832367606764, 1.9547237701864546, 1.422457441314247]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.334192185227862, 1.913388251491659, 2.88969130704807, 3.091739018018303, 1.8847996710509434]}}