{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:20.537019", "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-Sep-08_to_2023-Sep-20_143.5_17.5"}, "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": 2023090001148}, "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 08 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 20 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 13}, "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": 108630.79792877926}, "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": ["Northern Mariana Islands"]}, "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": ["Philippine Sea", "West Mariana Ridge"]}, "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": 17.5}, "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": 143.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "143.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 139.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.5}, "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": 19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[144.65, 17.25], [144.75, 17.0], [144.53, 16.47], [144.0, 16.25], [143.75, 16.35], [143.5, 16.25], [142.97, 16.47], 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"value": ["N.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, 18.03], [142.0, 18.25], [142.53, 18.03], [142.75, 17.5], [142.53, 16.97], [142.18, 16.82], [142.03, 16.47], [141.5, 16.25], [140.97, 16.47], [140.75, 17.0], [140.97, 17.53], [141.32, 17.68], [141.47, 18.03]]]]}, "2023-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, 18.03], [142.0, 18.25], [142.25, 18.15], [142.5, 18.25], [143.03, 18.03], [143.25, 17.5], [143.03, 16.97], [142.68, 16.82], [142.53, 16.47], [142.0, 16.25], [141.75, 16.35], [141.5, 16.25], [140.97, 16.47], [140.75, 17.0], [140.97, 17.53], [141.32, 17.68], [141.47, 18.03]]]]}, "2023-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.25, 18.5], [139.47, 19.03], [139.82, 19.18], [139.97, 19.53], [140.5, 19.75], [141.03, 19.53], 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