{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:15.336554", "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": "2025-Aug-10_to_2025-Aug-12_169.5_-15.5"}, "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": 2025080001713}, "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": "August 10 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 12 2025"}, "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": 50699.65859400023}, "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": ["Vanuatu"]}, "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": ["Coral Sea", "Pacific 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": -15.5}, "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": 169.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "169.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 167.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 171.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[167.5, -13.75], [167.75, -13.85], [168.0, -13.75], [168.25, -13.85], [168.5, -13.75], [169.03, -13.97], [169.18, -14.32], [169.25, -14.35], [169.5, -14.25], [169.75, -14.35], [170.0, -14.25], [170.53, -14.47], [170.68, -14.82], [171.03, -14.97], [171.18, -15.32], [171.53, -15.47], [171.75, -16.0], [171.53, -16.53], [171.0, -16.75], [170.75, -16.65], [170.5, -16.75], [170.25, -16.65], [170.0, -16.75], [169.47, -16.53], [169.32, -16.18], [169.25, -16.15], [169.0, -16.25], [168.75, -16.15], [168.5, -16.25], [167.97, -16.03], [167.82, -15.68], [167.75, -15.65], [167.5, -15.75], [166.97, -15.53], [166.75, -15.0], [166.85, -14.75], [166.75, -14.5], [166.97, -13.97], [167.5, -13.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[166.75, -14.5], [166.97, -13.97], [167.5, -13.75], [167.75, -13.85], [168.0, -13.75], [168.25, -13.85], [168.5, -13.75], [169.03, -13.97], [169.18, -14.32], [169.25, -14.35], [169.5, -14.25], [169.75, -14.35], [170.0, -14.25], [170.53, -14.47], [170.68, -14.82], [171.03, -14.97], [171.18, -15.32], [171.53, -15.47], [171.75, -16.0], [171.53, -16.53], [171.0, -16.75], [170.75, -16.65], [170.5, -16.75], [170.25, -16.65], [170.0, -16.75], [169.47, -16.53], [169.32, -16.18], [169.25, -16.15], [169.0, -16.25], [168.75, -16.15], [168.5, -16.25], [167.97, -16.03], [167.82, -15.68], [167.75, -15.65], [167.5, -15.75], [166.97, -15.53], [166.75, -15.0], [166.85, -14.75], [166.75, -14.5]]]]}, "2025-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[166.75, -14.5], [166.97, -13.97], [167.5, -13.75], [167.75, -13.85], [168.0, -13.75], [168.25, -13.85], [168.5, -13.75], [169.03, -13.97], [169.18, -14.32], [169.25, -14.35], [169.5, -14.25], [169.75, -14.35], [170.0, -14.25], [170.53, -14.47], [170.68, -14.82], [171.03, -14.97], [171.18, -15.32], [171.53, -15.47], [171.75, -16.0], [171.53, -16.53], [171.0, -16.75], [170.75, -16.65], [170.5, -16.75], [170.25, -16.65], [170.0, -16.75], [169.47, -16.53], [169.32, -16.18], [169.25, -16.15], [169.0, -16.25], [168.75, -16.15], [168.5, -16.25], [167.97, -16.03], [167.82, -15.68], [167.75, -15.65], [167.5, -15.75], [166.97, -15.53], [166.75, -15.0], [166.85, -14.75], [166.75, -14.5]]]]}, "2025-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[166.75, -14.5], [166.97, -13.97], [167.5, -13.75], [167.75, -13.85], [168.0, -13.75], [168.25, -13.85], [168.5, -13.75], [169.03, -13.97], [169.18, -14.32], [169.25, -14.35], [169.5, -14.25], [169.75, -14.35], [170.0, -14.25], [170.53, -14.47], [170.68, -14.82], [171.03, -14.97], [171.18, -15.32], [171.53, -15.47], [171.75, -16.0], [171.53, -16.53], [171.0, -16.75], [170.75, -16.65], [170.5, -16.75], [170.25, -16.65], [170.0, -16.75], [169.47, -16.53], [169.32, -16.18], [169.25, -16.15], [169.0, -16.25], [168.75, -16.15], [168.5, -16.25], [167.97, -16.03], [167.82, -15.68], [167.75, -15.65], [167.5, -15.75], [166.97, -15.53], [166.75, -15.0], [166.85, -14.75], [166.75, -14.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.5361844680068089}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.2338392200283077}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.334327952067042, 26.472010698505528, 26.53485551721917]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.614926910400413, 26.66183242797854, 26.887380218505882]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.110411436050513, 1.2553899455941846, 1.3357162784402254]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.2691657358063253, 1.5361844680068089, 1.4839097879897167]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.378706369666538, 1.528897108093415, 1.6042435498983632]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5055193942326486, 1.7352211217282854, 1.8029551095488645]}}