{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:44.476890", "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-Oct-14_to_2023-Oct-17_168.5_-29.0"}, "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": 2023100001445}, "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": "October 14 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 17 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": 103113.74763365192}, "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": ["Norfolk Island"]}, "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": ["Norfolk Ridge", "North Norfolk Basin", "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": -29.0}, "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": 168.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "168.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 165.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 169.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[165.53, -28.47], [165.68, -28.82], [165.75, -28.85], [166.0, -28.75], [166.53, -28.97], [166.68, -29.32], [166.75, -29.35], [166.82, -29.32], [166.85, -29.25], [166.75, -29.0], [166.85, -28.75], [166.82, -28.68], [166.47, -28.53], [166.32, -28.18], [165.97, -28.03], [165.75, -27.5], [165.85, -27.25], [165.75, -27.0], [165.97, -26.47], [166.32, -26.32], [166.47, -25.97], [167.0, -25.75], [167.25, -25.85], [167.5, -25.75], [167.75, -25.85], [168.0, -25.75], [168.53, -25.97], [168.75, -26.5], [168.65, -26.75], [168.75, -27.0], [168.65, -27.25], [168.68, -27.32], [169.03, -27.47], [169.18, -27.82], [169.53, -27.97], [169.75, -28.5], [169.65, -28.75], [169.75, -29.0], [169.65, -29.25], [169.75, -29.5], [169.53, -30.03], [169.0, -30.25], [168.75, -30.15], [168.5, -30.25], [168.25, -30.15], [168.13, -30.2], [168.25, -30.5], [168.03, -31.03], [167.5, -31.25], [167.25, -31.15], [167.0, -31.25], [166.75, -31.15], [166.5, -31.25], [165.97, -31.03], [165.82, -30.68], [165.75, -30.65], [165.5, -30.75], [164.97, -30.53], [164.82, -30.18], [164.47, -30.03], [164.25, -29.5], [164.35, -29.25], [164.25, -29.0], [164.47, -28.47], [165.0, -28.25], [165.53, -28.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["New-Zealand", "S.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[164.25, -29.0], [164.47, -28.47], [165.0, -28.25], [165.53, -28.47], [165.68, -28.82], [165.75, -28.85], [166.0, -28.75], [166.53, -28.97], [166.68, -29.32], [166.8, -29.37], [166.85, -29.25], [166.75, -29.0], [166.85, -28.75], [166.82, -28.68], [166.47, -28.53], [166.32, -28.18], [165.97, -28.03], [165.75, -27.5], [165.85, -27.25], [165.75, -27.0], [165.97, -26.47], [166.5, -26.25], [166.75, -26.35], [166.82, -26.32], [166.97, -25.97], [167.5, -25.75], [168.03, -25.97], [168.18, -26.32], [168.53, -26.47], [168.75, -27.0], [168.65, -27.25], [168.68, -27.32], [169.03, -27.47], [169.18, 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[164.25, -29.0]]]]}, "2023-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[166.25, -27.0], [166.35, -26.75], [166.25, -26.5], [166.47, -25.97], [167.0, -25.75], [167.25, -25.85], [167.5, -25.75], [167.75, -25.85], [168.0, -25.75], [168.53, -25.97], [168.75, -26.5], [168.65, -26.75], [168.75, -27.0], [168.65, -27.25], [168.68, -27.32], [169.03, -27.47], [169.18, -27.82], [169.53, -27.97], [169.75, -28.5], [169.65, -28.75], [169.75, -29.0], [169.65, -29.25], [169.75, -29.5], [169.53, -30.03], [169.0, -30.25], [168.75, -30.15], [168.5, -30.25], [168.25, -30.15], [168.13, -30.2], [168.25, -30.5], [168.03, -31.03], [167.5, -31.25], [166.97, -31.03], [166.82, -30.68], [166.47, -30.53], [166.25, -30.0], [166.47, -29.47], [166.82, -29.32], [166.85, -29.25], [166.75, -29.0], [166.85, -28.75], [166.75, -28.5], [166.85, -28.25], [166.82, -28.18], [166.47, -28.03], [166.25, -27.5], [166.35, -27.25], [166.25, -27.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.2867917807473646}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.728153720011116}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.032113997300144, 20.18328478987553, 20.33954832639364, 20.405726381246495]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.09036601931996, 21.355168535059818, 21.40782246510713, 21.414797003148294]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6285178572920262, 1.7098627558067108, 1.8205863562028781, 1.750085866046865]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.942919202410394, 2.284212774582329, 2.2867917807473646, 2.179121135195601]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6016092923499845, 1.6759266548684735, 1.7695842777401471, 1.6738109737613434]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9112673934076438, 2.2495858929585535, 2.2596055783680358, 2.097015622344783]}}