{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:45.295356", "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-19_to_2023-Jan-22_25.5_-67.0"}, "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": 2023010002509}, "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 19 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 22 2023"}, "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": 56488.3911832009}, "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": ["Riser-Larsena, more", "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": -67.0}, "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": 25.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -68.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -66.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[21.35, -67.25], [21.25, -67.0], [21.47, -66.47], [22.0, -66.25], [22.25, -66.35], [22.5, -66.25], [22.75, -66.35], [22.82, 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regions affected", "value": ["E.Antarctica"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.75, -66.5], [24.97, -65.97], [25.32, -65.82], [25.47, -65.47], [26.0, -65.25], [26.53, -65.47], [26.68, -65.82], [26.75, -65.85], [27.0, -65.75], [27.53, -65.97], [27.75, -66.5], [27.53, -67.03], [27.0, -67.25], [26.75, -67.15], [26.68, -67.18], [26.53, -67.53], [26.0, -67.75], [25.75, -67.65], [25.5, -67.75], [24.97, -67.53], [24.75, -67.0], [24.85, -66.75], [24.75, -66.5]]]]}, "2023-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.25, -68.0], [21.35, -67.75], [21.25, -67.5], [21.35, -67.25], [21.25, -67.0], [21.47, -66.47], [22.0, -66.25], [22.25, -66.35], [22.5, -66.25], [22.75, -66.35], [22.82, -66.32], [22.97, -65.97], [23.32, -65.82], [23.47, -65.47], [24.0, -65.25], [24.25, -65.35], [24.5, -65.25], 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daily evolution of maximum t2m anomalies.", "value": [0.8152389471006813, 1.018207178952025, 1.1710152764086388, 1.0722716384012756]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3655831935540692, 1.4763669451600747, 1.7198786045224947, 1.48968525648492]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4697247016596593, 1.798526564070642, 2.0074566789818378, 1.7350433587339777]}}