{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:48.367536", "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": "2017-Dec-25_to_2017-Dec-28_189.0_-13.5"}, "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": 2017120002498}, "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": "December 25 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 28 2017"}, "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": 78331.5197623343}, "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": ["Samoa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Pacific-Ocean"]}, "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": ["South 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": -13.5}, "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": 189.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "189.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 187.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 190.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-172.53, -14.53], [-172.75, -14.0], [-172.53, -13.47], [-172.0, -13.25], [-171.47, -13.47], [-171.25, -14.0], [-171.47, -14.53], [-172.0, -14.75], [-172.53, -14.53]]], [[[-172.03, -11.53], [-172.25, -11.0], [-172.03, -10.47], [-171.5, -10.25], [-170.97, -10.47], [-170.75, -11.0], [-170.97, -11.53], [-171.5, -11.75], [-172.03, -11.53]]]]}, "2017-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-172.25, -13.0], [-172.15, -12.75], [-172.25, -12.5], [-172.03, -11.97], [-171.68, -11.82], [-171.65, -11.75], [-171.68, -11.68], [-172.03, -11.53], [-172.25, -11.0], [-172.03, -10.47], [-171.5, -10.25], [-171.25, -10.35], [-171.0, -10.25], [-170.47, -10.47], [-170.32, -10.82], [-170.25, -10.85], [-170.0, -10.75], [-169.47, -10.97], [-169.32, -11.32], [-168.97, -11.47], [-168.75, -12.0], [-168.96, -12.5], [-168.75, -13.0], [-168.85, -13.25], [-168.75, -13.5], [-168.85, -13.75], [-168.75, -14.0], [-168.97, -14.53], [-169.32, -14.68], [-169.47, -15.03], [-170.0, -15.25], [-170.53, -15.03], [-170.68, -14.68], [-170.75, -14.65], [-171.0, -14.75], [-171.25, -14.65], [-171.5, -14.75], [-171.75, -14.65], [-172.0, -14.75], [-172.53, -14.53], [-172.75, -14.0], [-172.53, -13.47], [-172.18, -13.32], [-172.15, -13.25], [-172.25, -13.0]]]]}, "2017-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-172.25, -13.0], [-172.15, -12.75], [-172.25, -12.5], [-172.03, -11.97], [-171.68, -11.82], [-171.65, -11.75], [-171.68, -11.68], [-172.03, -11.53], [-172.25, -11.0], [-172.03, -10.47], [-171.5, -10.25], [-171.25, -10.35], [-171.0, -10.25], [-170.47, -10.47], [-170.32, -10.82], [-170.25, -10.85], [-170.0, -10.75], [-169.47, -10.97], [-169.32, -11.32], [-168.97, -11.47], [-168.75, -12.0], [-168.96, -12.5], [-168.75, -13.0], [-168.85, -13.25], [-168.75, -13.5], [-168.85, -13.75], [-168.75, -14.0], [-168.97, -14.53], [-169.32, -14.68], [-169.47, -15.03], [-170.0, -15.25], [-170.53, -15.03], [-170.68, -14.68], [-170.75, -14.65], [-171.0, -14.75], [-171.25, -14.65], [-171.5, -14.75], [-171.75, -14.65], [-172.0, -14.75], [-172.53, -14.53], [-172.75, -14.0], [-172.53, -13.47], [-172.18, -13.32], [-172.15, -13.25], [-172.25, -13.0]]]]}, "2017-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-172.15, -13.25], [-172.25, -13.0], [-172.15, -12.75], [-172.25, -12.5], [-172.03, -11.97], [-171.68, -11.82], [-171.65, -11.75], [-171.68, -11.68], [-172.03, -11.53], [-172.25, -11.0], [-172.03, -10.47], [-171.5, -10.25], [-171.25, -10.35], [-171.0, -10.25], [-170.47, -10.47], [-170.32, -10.82], [-170.25, -10.85], [-170.0, -10.75], [-169.47, -10.97], [-169.32, -11.32], [-168.97, -11.47], [-168.75, -12.0], [-168.96, -12.5], [-168.75, -13.0], [-168.85, -13.25], [-168.75, -13.5], [-168.85, -13.75], [-168.75, -14.0], [-168.97, -14.53], [-169.32, -14.68], [-169.47, -15.03], [-170.0, -15.25], [-170.53, -15.03], [-170.68, -14.68], [-170.75, -14.65], [-171.0, -14.75], [-171.25, -14.65], [-171.5, -14.75], [-172.03, -14.53], [-172.25, -14.0], [-172.15, -13.75], [-172.25, -13.5], [-172.15, -13.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.3740728062456924}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.0367991350216272}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.735992286126475, 27.939126083516385, 27.95071478611385, 28.203172340342064]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.102973750543242, 28.326544705200547, 28.228752895071977, 28.509609400702573]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.814297707523508, 0.9587666814974468, 0.9760572751641956, 1.1989245351383533]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.9191153359578266, 1.2176247912518647, 1.255696099487011, 1.3740728062456924]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4017821823641508, 1.609303058160108, 1.643401492682123, 1.9587299375478882]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4801926398854095, 1.93083345504283, 2.452437910213439, 2.462105519011029]}}