{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:18.665699", "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": "2021-Aug-31_to_2021-Sep-02_177.5_-63.0"}, "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": 2021080003264}, "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 31 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 02 2021"}, "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": 89990.51017200745}, "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": ["Pacific 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": -63.0}, "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": 177.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "177.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 168.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 178.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -63.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -60.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[167.47, -61.47], [168.0, -61.25], [168.25, -61.35], [168.5, -61.25], [168.75, -61.35], [169.0, -61.25], [169.25, -61.35], [169.5, -61.25], [169.75, -61.35], [169.82, -61.32], [169.97, -60.97], [170.32, -60.82], [170.47, -60.47], [171.0, -60.25], [171.25, -60.35], [171.32, -60.32], [171.47, -59.97], [172.0, -59.75], [172.25, -59.85], [172.5, -59.75], [173.0, -59.96], [173.5, -59.75], [174.03, -59.97], [174.18, -60.32], [174.53, -60.47], [174.68, -60.82], [174.75, -60.85], [175.0, -60.75], [175.53, -60.97], [175.68, -61.32], [176.03, -61.47], [176.18, -61.82], [176.25, -61.85], [176.5, -61.75], [176.75, -61.85], [177.0, -61.75], [177.25, -61.85], [177.5, -61.75], [177.75, -61.85], [178.0, -61.75], [178.53, -61.97], [178.75, -62.5], [178.65, -62.75], [178.75, -63.0], [178.53, -63.53], [178.0, -63.75], [177.75, -63.65], [177.5, -63.75], [177.25, -63.65], [177.0, -63.75], [176.75, -63.65], [176.5, -63.75], [176.25, -63.65], [176.0, -63.75], [175.75, -63.65], [175.5, -63.75], [174.97, -63.53], [174.82, -63.18], [174.75, -63.15], [174.5, -63.25], [174.25, -63.15], [174.0, -63.25], [173.75, -63.15], [173.5, -63.25], [173.25, -63.15], [173.0, -63.25], [172.75, -63.15], [172.5, -63.25], [172.25, -63.15], [172.0, -63.25], [171.75, -63.15], [171.5, -63.25], [171.25, -63.15], [171.0, -63.25], [170.75, -63.15], [170.5, -63.25], [170.25, -63.15], [170.0, -63.25], [169.75, -63.15], [169.5, -63.25], [169.25, -63.15], [169.0, -63.25], [168.75, -63.15], [168.5, -63.25], [167.97, -63.03], [167.82, -62.68], [167.47, -62.53], [167.25, -62.0], [167.47, -61.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[167.47, -62.53], [167.25, -62.0], [167.47, -61.47], [168.0, -61.25], [168.25, -61.35], [168.5, -61.25], [168.75, -61.35], [169.0, -61.25], [169.25, -61.35], [169.5, -61.25], [169.75, -61.35], [169.82, -61.32], [169.97, -60.97], [170.32, -60.82], [170.47, -60.47], [171.0, -60.25], [171.25, -60.35], [171.32, -60.32], [171.47, -59.97], [172.0, -59.75], [172.25, -59.85], [172.5, -59.75], [173.0, -59.96], [173.5, -59.75], [174.03, -59.97], [174.18, -60.32], [174.53, -60.47], [174.68, -60.82], [174.75, -60.85], [175.0, -60.75], [175.53, -60.97], [175.68, -61.32], [176.03, -61.47], [176.18, -61.82], [176.25, -61.85], [176.5, -61.75], [176.75, -61.85], [177.0, -61.75], [177.25, -61.85], [177.5, -61.75], [177.75, -61.85], [178.0, -61.75], [178.53, -61.97], [178.75, -62.5], [178.65, -62.75], [178.75, -63.0], [178.53, -63.53], [178.0, -63.75], [177.75, -63.65], [177.5, -63.75], [177.25, -63.65], [177.0, -63.75], [176.75, -63.65], [176.5, -63.75], [176.25, -63.65], [176.0, -63.75], [175.75, -63.65], [175.5, -63.75], [174.97, -63.53], [174.82, -63.18], [174.75, -63.15], [174.5, -63.25], [174.25, -63.15], [174.0, -63.25], [173.75, -63.15], [173.5, -63.25], [173.25, -63.15], [173.0, -63.25], [172.75, -63.15], [172.5, -63.25], [172.25, -63.15], [172.0, -63.25], [171.75, -63.15], [171.5, -63.25], [171.25, -63.15], [171.0, -63.25], [170.75, -63.15], [170.5, -63.25], [170.25, -63.15], [170.0, -63.25], [169.75, -63.15], [169.5, -63.25], [169.25, -63.15], [169.0, -63.25], [168.75, -63.15], [168.5, -63.25], [167.97, -63.03], [167.82, -62.68], [167.47, -62.53]]]]}, "2021-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[167.47, -62.53], [167.25, -62.0], [167.47, -61.47], [168.0, -61.25], [168.25, -61.35], [168.5, -61.25], [168.75, -61.35], [169.0, -61.25], [169.25, -61.35], [169.5, -61.25], [169.75, -61.35], [169.82, -61.32], [169.97, -60.97], [170.32, -60.82], [170.47, -60.47], [171.0, -60.25], [171.25, -60.35], [171.32, -60.32], [171.47, -59.97], [172.0, -59.75], [172.25, -59.85], [172.5, -59.75], [173.0, -59.96], [173.5, -59.75], [174.03, -59.97], [174.18, -60.32], [174.53, -60.47], [174.68, -60.82], [174.75, -60.85], [175.0, -60.75], [175.53, -60.97], [175.68, -61.32], [176.03, -61.47], [176.18, -61.82], [176.25, -61.85], [176.5, -61.75], [176.75, -61.85], [177.0, -61.75], [177.25, -61.85], [177.5, -61.75], [177.75, -61.85], [178.0, -61.75], [178.53, -61.97], [178.75, -62.5], [178.65, -62.75], [178.75, -63.0], [178.53, -63.53], [178.0, -63.75], [177.75, -63.65], [177.5, -63.75], [177.25, -63.65], [177.0, -63.75], [176.75, -63.65], [176.5, -63.75], [176.25, -63.65], [176.0, -63.75], [175.75, -63.65], [175.5, -63.75], [174.97, -63.53], [174.82, -63.18], [174.75, -63.15], [174.5, -63.25], [174.25, -63.15], [174.0, -63.25], [173.75, -63.15], [173.5, -63.25], [173.25, -63.15], [173.0, -63.25], [172.75, -63.15], [172.5, -63.25], [172.25, -63.15], [172.0, -63.25], [171.75, -63.15], [171.5, -63.25], [171.25, -63.15], [171.0, -63.25], [170.75, -63.15], [170.5, -63.25], [170.25, -63.15], [170.0, -63.25], [169.75, -63.15], [169.5, -63.25], [169.25, -63.15], [169.0, -63.25], [168.75, -63.15], [168.5, -63.25], [167.97, -63.03], [167.82, -62.68], [167.47, -62.53]]]]}, "2021-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[167.47, -62.53], [167.25, -62.0], [167.47, -61.47], [168.0, -61.25], [168.25, -61.35], [168.5, -61.25], [168.75, -61.35], [169.0, -61.25], [169.25, -61.35], [169.5, -61.25], [169.75, -61.35], [169.82, -61.32], [169.97, -60.97], [170.32, -60.82], [170.47, -60.47], [171.0, -60.25], [171.25, -60.35], [171.32, -60.32], [171.47, -59.97], [172.0, -59.75], [172.25, -59.85], [172.5, -59.75], [173.0, -59.96], [173.5, -59.75], [174.03, -59.97], [174.18, -60.32], [174.53, -60.47], [174.68, -60.82], [174.75, -60.85], [175.0, -60.75], [175.53, -60.97], [175.68, -61.32], [176.03, -61.47], [176.18, -61.82], [176.25, -61.85], [176.5, -61.75], [176.75, -61.85], [177.0, -61.75], [177.25, -61.85], [177.5, -61.75], [177.75, -61.85], [178.0, -61.75], [178.53, -61.97], [178.75, -62.5], [178.65, -62.75], [178.75, -63.0], [178.53, -63.53], [178.0, -63.75], [177.75, -63.65], [177.5, -63.75], [177.25, -63.65], [177.0, -63.75], [176.75, -63.65], [176.5, -63.75], [176.25, -63.65], [176.0, -63.75], [175.75, -63.65], [175.5, -63.75], [174.97, -63.53], [174.82, -63.18], [174.75, -63.15], [174.5, -63.25], [174.25, -63.15], [174.0, -63.25], [173.75, -63.15], [173.5, -63.25], [173.25, -63.15], [173.0, -63.25], [172.75, -63.15], [172.5, -63.25], [172.25, -63.15], [172.0, -63.25], [171.75, -63.15], [171.5, -63.25], [171.25, -63.15], [171.0, -63.25], [170.75, -63.15], [170.5, -63.25], [170.25, -63.15], [170.0, -63.25], [169.75, -63.15], [169.5, -63.25], [169.25, -63.15], [169.0, -63.25], [168.75, -63.15], [168.5, -63.25], [167.97, -63.03], [167.82, -62.68], [167.47, -62.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.343558881299032}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.579318103599882}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.6785189424520581, 2.5829875178315547, 1.828972632987984]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.3350772602530583, 4.139916642149444, 3.761552495442629]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.284201018445553, 5.154598284079075, 4.299155008275021]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.230408804663625, 6.343558881299032, 5.317373528246435]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.114736741060371, 1.362342271361509, 1.1515703924159248]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2245742007297864, 1.505144173585735, 1.2914195789785976]}}