{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:59.598194", "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-Apr-30_to_2023-May-02_158.5_-59.0"}, "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": 2023040002930}, "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": "April 30 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 02 2023"}, "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": "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": 113188.05049892566}, "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": ["Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": ["Indian Ocean", "Southern Ocean"]}, "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": -59.0}, "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": 158.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "158.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 152.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 164.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -61.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -58.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[152.5, -58.75], [152.75, -58.85], [153.0, -58.75], [153.25, -58.85], [153.32, -58.82], [153.47, -58.47], [153.82, 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describing the boundary of the event at each time step", "value": {"2023-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.75, -59.5], [151.97, -58.97], [152.5, -58.75], [152.75, -58.85], [153.0, -58.75], [153.25, -58.85], [153.32, -58.82], [153.47, -58.47], [153.82, -58.32], [153.97, -57.97], [154.5, -57.75], [154.75, -57.85], [155.0, -57.75], [155.25, -57.85], [155.32, -57.82], [155.47, -57.47], [156.0, -57.25], [156.53, -57.47], [156.68, -57.82], [156.75, -57.85], [157.0, -57.75], [157.53, -57.97], [157.75, -58.5], [157.63, -58.8], [157.75, -58.85], [157.82, -58.82], [157.97, -58.47], [158.5, -58.25], [159.03, -58.47], [159.25, -59.0], [159.15, -59.25], [159.18, -59.32], [159.53, -59.47], [159.68, -59.82], [159.75, -59.85], [160.0, -59.75], [160.5, -59.96], [160.88, -59.8], [160.75, -59.5], [160.97, -58.97], [161.5, -58.75], [161.75, -58.85], [162.0, -58.75], [162.25, -58.85], [162.5, -58.75], [163.03, -58.97], [163.18, -59.32], [163.53, -59.47], [163.68, 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t2m anomalies.", "value": [2.9854741573468573, 2.892712872166044, 2.906416462644245]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3707620591822998, 1.3572000091571892, 1.1922873545421047]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7613000990686885, 1.6228327866413943, 1.2821601189309653]}}