{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:58.234489", "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-Nov-09_to_2025-Nov-12_208.5_-23.5"}, "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": 2025110001521}, "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": "November 09 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 12 2025"}, "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": 152701.08428041555}, "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": ["French Polynesia"]}, "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": ["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": -23.5}, "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": 208.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "208.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 207.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 214.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-152.25, -21.85], [-152.0, -21.75], [-151.75, -21.85], [-151.5, -21.75], [-151.25, -21.85], [-151.0, -21.75], [-150.47, -21.97], [-150.3, -22.37], [-150.0, -22.25], [-149.75, -22.35], [-149.68, -22.32], [-149.53, -21.97], [-149.0, -21.75], [-148.75, -21.85], [-148.5, -21.75], [-147.97, -21.97], [-147.82, -22.32], [-147.75, -22.35], [-147.5, -22.25], [-146.97, -22.47], [-146.82, -22.82], [-146.75, -22.85], [-146.5, -22.75], [-145.97, -22.97], [-145.82, -23.32], [-145.47, -23.47], [-145.32, -23.82], [-144.97, -23.97], [-144.75, -24.5], [-144.85, -24.75], [-144.75, -25.0], [-144.97, -25.53], [-145.5, -25.75], [-145.75, -25.65], [-146.0, -25.75], [-146.25, -25.65], [-146.5, -25.75], [-146.75, -25.65], [-147.0, -25.75], [-147.25, -25.65], [-147.5, -25.75], [-148.0, -25.54], [-148.5, -25.75], [-148.75, -25.65], [-148.82, -25.68], [-148.97, -26.03], [-149.5, -26.25], [-150.03, -26.03], [-150.25, -25.5], [-150.15, -25.25], [-150.25, -25.0], [-150.15, -24.75], [-150.18, -24.68], [-150.53, -24.53], [-150.68, -24.18], [-150.75, -24.15], [-151.0, -24.25], [-151.25, -24.15], [-151.5, -24.25], [-152.03, -24.03], [-152.18, -23.68], [-152.25, -23.65], [-152.5, -23.75], [-153.03, -23.53], [-153.25, -23.0], [-153.15, -22.75], [-153.25, -22.5], [-153.03, -21.97], [-152.5, -21.75], [-152.25, -21.85]]]]}}, "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": {"2025-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-153.25, -22.5], [-153.03, -21.97], [-152.5, -21.75], [-152.25, -21.85], [-152.0, -21.75], [-151.75, -21.85], [-151.5, -21.75], [-151.25, -21.85], [-151.0, -21.75], [-150.47, -21.97], [-150.25, -22.5], [-150.47, -23.03], [-150.82, -23.18], [-150.85, -23.25], [-150.75, -23.5], [-150.97, -24.03], [-151.5, -24.25], [-152.03, -24.03], [-152.18, -23.68], [-152.25, -23.65], [-152.5, -23.75], [-153.03, -23.53], [-153.25, -23.0], [-153.15, -22.75], [-153.25, -22.5]]]]}, "2025-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-153.25, -22.5], [-153.03, -21.97], [-152.5, -21.75], [-152.25, -21.85], [-152.0, -21.75], [-151.75, -21.85], [-151.5, -21.75], [-151.25, -21.85], [-151.0, -21.75], [-150.47, -21.97], [-150.3, -22.37], [-150.0, -22.25], [-149.75, -22.35], [-149.68, -22.32], [-149.53, -21.97], [-149.0, -21.75], [-148.75, -21.85], [-148.5, -21.75], [-147.97, -21.97], [-147.82, -22.32], [-147.75, -22.35], [-147.5, -22.25], [-146.97, -22.47], [-146.82, -22.82], [-146.75, -22.85], [-146.5, -22.75], [-145.97, -22.97], [-145.82, -23.32], [-145.47, -23.47], [-145.32, -23.82], [-144.97, -23.97], [-144.75, -24.5], [-144.85, -24.75], [-144.75, -25.0], [-144.97, -25.53], [-145.5, -25.75], [-145.75, -25.65], [-146.0, -25.75], [-146.25, -25.65], [-146.5, -25.75], [-146.75, -25.65], [-147.0, -25.75], [-147.25, -25.65], [-147.5, -25.75], [-148.0, -25.54], [-148.5, -25.75], [-148.75, -25.65], [-148.82, -25.68], [-148.97, -26.03], [-149.5, -26.25], [-150.03, -26.03], [-150.25, -25.5], [-150.15, -25.25], [-150.25, -25.0], [-150.15, -24.75], [-150.18, -24.68], [-150.53, -24.53], [-150.68, -24.18], [-150.75, -24.15], [-151.0, -24.25], [-151.25, -24.15], [-151.5, -24.25], [-152.03, -24.03], [-152.18, -23.68], [-152.25, -23.65], [-152.5, -23.75], [-153.03, -23.53], [-153.25, -23.0], [-153.15, -22.75], [-153.25, -22.5]]]]}, "2025-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-153.25, -22.5], [-153.03, -21.97], [-152.5, -21.75], [-152.25, -21.85], [-152.0, -21.75], [-151.75, -21.85], [-151.5, -21.75], [-151.25, -21.85], [-151.0, -21.75], [-150.47, -21.97], [-150.3, -22.37], [-150.0, -22.25], [-149.75, -22.35], [-149.68, -22.32], [-149.53, -21.97], [-149.0, -21.75], [-148.75, -21.85], [-148.5, -21.75], [-147.97, -21.97], [-147.82, -22.32], [-147.75, -22.35], [-147.5, -22.25], [-146.97, -22.47], [-146.82, -22.82], [-146.75, -22.85], [-146.5, -22.75], [-145.97, -22.97], [-145.82, -23.32], [-145.47, -23.47], [-145.32, -23.82], [-144.97, -23.97], [-144.75, -24.5], [-144.85, -24.75], [-144.75, -25.0], [-144.97, -25.53], [-145.5, -25.75], [-145.75, -25.65], [-146.0, -25.75], [-146.25, -25.65], [-146.5, -25.75], [-146.75, -25.65], [-147.0, -25.75], [-147.25, -25.65], [-147.5, -25.75], [-148.0, -25.54], [-148.5, -25.75], [-148.75, -25.65], [-148.82, -25.68], [-148.97, -26.03], [-149.5, -26.25], [-150.03, -26.03], [-150.25, -25.5], [-150.15, -25.25], [-150.25, -25.0], [-150.15, -24.75], [-150.18, -24.68], [-150.53, -24.53], [-150.68, -24.18], [-150.75, -24.15], [-151.0, -24.25], [-151.25, -24.15], [-151.5, -24.25], [-152.03, -24.03], [-152.18, -23.68], [-152.25, -23.65], [-152.5, -23.75], [-153.03, -23.53], [-153.25, -23.0], [-153.15, -22.75], [-153.25, -22.5]]]]}, "2025-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-151.53, -22.47], [-151.0, -22.25], [-150.5, -22.46], [-150.0, -22.25], [-149.75, -22.35], [-149.68, -22.32], [-149.53, -21.97], [-149.0, -21.75], [-148.75, -21.85], [-148.5, -21.75], [-147.97, -21.97], [-147.82, -22.32], [-147.75, -22.35], [-147.5, -22.25], [-146.97, -22.47], [-146.82, -22.82], [-146.75, -22.85], [-146.5, -22.75], [-145.97, -22.97], [-145.82, -23.32], [-145.47, -23.47], [-145.32, -23.82], [-144.97, -23.97], [-144.75, -24.5], [-144.85, -24.75], [-144.75, -25.0], [-144.97, -25.53], [-145.5, -25.75], [-145.75, -25.65], [-146.0, -25.75], [-146.25, -25.65], [-146.5, -25.75], [-146.75, -25.65], [-147.0, -25.75], [-147.25, -25.65], [-147.5, -25.75], [-148.0, -25.54], [-148.5, -25.75], [-148.75, -25.65], [-148.82, -25.68], [-148.97, -26.03], [-149.5, -26.25], [-150.03, -26.03], [-150.25, -25.5], [-150.15, -25.25], [-150.25, -25.0], [-150.15, -24.75], [-150.18, -24.68], [-150.53, -24.53], [-150.68, -24.18], [-150.75, -24.15], [-151.0, -24.25], [-151.25, -24.15], [-151.5, -24.25], [-152.03, -24.03], [-152.25, -23.5], [-152.03, -22.97], [-151.68, -22.82], [-151.53, -22.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.317984347865206}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.6302521351945412}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.28152236938479, 23.957038474377327, 24.41310380535367, 24.00250210051837]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.434456125895224, 24.56741867065432, 25.077842966715536, 24.71505508422854]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.3091791987477848, 1.5190482114074413, 1.8917591085021581, 1.5122142376938201]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.3983146816917724, 1.7854595270980553, 2.317984347865206, 1.8264795561217966]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.330723589265917, 1.503041285301919, 1.9318098797510632, 1.5555915082538765]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3879703539660764, 1.7049029459011606, 2.4971941212342115, 1.7830817918136983]}}