{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:09.138539", "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": "2022-Jun-01_to_2022-Jun-05_186.0_-18.5"}, "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": 2022060001420}, "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": "June 01 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 05 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 113501.58377572792}, "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": ["Tonga"]}, "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": -18.5}, "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": 186.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "186.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 185.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 189.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-175.25, -18.5], [-175.03, -17.97], [-174.5, -17.75], [-174.25, -17.85], [-174.18, -17.82], [-174.03, -17.47], [-173.5, -17.25], [-173.25, -17.35], [-173.0, -17.25], [-172.75, -17.35], [-172.5, -17.25], [-171.97, -17.47], [-171.75, -18.0], [-171.85, -18.25], [-171.82, -18.32], [-171.47, -18.47], [-171.25, -19.0], [-171.35, -19.25], [-171.32, -19.32], [-171.25, -19.35], [-171.0, -19.25], [-170.47, -19.47], [-170.25, -20.0], [-170.47, -20.53], [-170.82, -20.68], [-170.85, -20.75], [-170.82, -20.82], [-170.47, -20.97], [-170.32, -21.32], [-169.97, -21.47], [-169.75, -22.0], [-169.97, -22.53], [-170.5, -22.75], [-170.75, -22.65], [-171.0, -22.75], [-171.53, -22.53], [-171.68, -22.18], [-172.03, -22.03], [-172.25, -21.5], [-172.15, -21.25], [-172.18, -21.18], [-172.25, -21.15], [-172.5, -21.25], [-173.03, -21.03], [-173.18, -20.68], [-173.25, -20.65], [-173.5, -20.75], [-173.75, -20.65], [-173.82, -20.68], [-173.97, -21.03], [-174.5, -21.25], [-175.03, -21.03], [-175.18, -20.68], [-175.53, -20.53], [-175.75, -20.0], [-175.65, -19.75], [-175.75, -19.5], [-175.53, -18.97], [-175.18, -18.82], [-175.15, -18.75], [-175.25, -18.5]]]]}}, "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": {"2022-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-172.53, -20.03], [-172.75, -19.5], [-172.53, -18.97], [-172.0, -18.75], [-171.47, -18.97], [-171.3, -19.37], [-171.0, -19.25], [-170.47, -19.47], [-170.25, -20.0], [-170.47, -20.53], [-171.0, -20.75], [-171.53, -20.53], [-171.7, -20.12], [-172.0, -20.25], [-172.53, -20.03]]], [[[-175.03, -17.97], [-174.5, -17.75], [-174.25, -17.85], [-174.0, -17.75], [-173.47, -17.97], [-173.25, -18.5], [-173.47, -19.03], [-173.82, -19.18], [-173.87, -19.3], [-173.47, -19.47], [-173.25, -20.0], [-173.47, -20.53], [-174.0, -20.75], [-174.25, -20.65], [-174.5, -20.75], [-175.03, -20.53], [-175.25, -20.0], [-175.04, -19.5], [-175.25, -19.0], [-175.15, -18.75], [-175.25, -18.5], [-175.03, -17.97]]]]}, "2022-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-175.75, -19.5], [-175.53, -18.97], [-175.18, -18.82], [-175.15, -18.75], [-175.25, -18.5], [-175.03, -17.97], [-174.5, -17.75], [-174.25, -17.85], [-174.18, -17.82], [-174.03, -17.47], [-173.5, -17.25], [-173.25, -17.35], [-173.0, -17.25], [-172.75, -17.35], [-172.5, -17.25], [-171.97, -17.47], [-171.75, -18.0], [-171.85, -18.25], [-171.82, -18.32], [-171.47, -18.47], [-171.25, -19.0], [-171.35, -19.25], [-171.32, -19.32], [-171.25, -19.35], [-171.0, -19.25], [-170.47, -19.47], [-170.25, -20.0], [-170.47, -20.53], [-170.82, -20.68], [-170.97, -21.03], [-171.5, -21.25], [-171.75, -21.15], [-172.0, -21.25], [-172.25, -21.15], [-172.5, -21.25], [-173.03, -21.03], [-173.18, -20.68], [-173.25, -20.65], [-173.5, -20.75], [-173.75, -20.65], [-173.82, -20.68], [-173.97, -21.03], [-174.5, -21.25], [-175.03, -21.03], [-175.18, -20.68], [-175.53, -20.53], [-175.75, -20.0], [-175.65, -19.75], [-175.75, -19.5]]]]}, "2022-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-175.75, -19.5], [-175.53, -18.97], [-175.18, -18.82], [-175.15, -18.75], [-175.25, -18.5], [-175.03, -17.97], [-174.5, -17.75], [-174.25, -17.85], [-174.18, -17.82], [-174.03, -17.47], [-173.5, -17.25], [-173.25, -17.35], [-173.0, -17.25], [-172.75, -17.35], [-172.5, -17.25], [-171.97, -17.47], [-171.75, -18.0], [-171.85, -18.25], [-171.82, -18.32], [-171.47, -18.47], [-171.25, -19.0], [-171.35, -19.25], [-171.32, -19.32], [-171.25, -19.35], [-171.0, -19.25], [-170.47, -19.47], [-170.25, -20.0], [-170.47, -20.53], [-170.82, -20.68], [-170.85, -20.75], [-170.82, -20.82], [-170.47, -20.97], [-170.32, -21.32], [-169.97, -21.47], [-169.75, -22.0], [-169.97, -22.53], [-170.5, -22.75], [-170.75, -22.65], [-171.0, -22.75], [-171.53, -22.53], [-171.68, -22.18], [-172.03, -22.03], [-172.25, -21.5], [-172.15, -21.25], [-172.18, -21.18], [-172.25, -21.15], [-172.5, 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26.07506630236719, 25.66568233335215]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.425413297013904, 26.976604430539112, 26.973015641842437, 27.00125784854248, 26.498281310985874]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.3012062180364978, 1.6099963843554004, 1.7022117383379582, 1.5510503139829188, 1.3949291097935603]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.382171932197764, 1.920260407807291, 2.075023785896576, 1.8510204411236373, 1.6039202872556189]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4330708082282684, 1.766246699748771, 1.8356060694580538, 1.6835819074368357, 1.4904277934351604]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4914142728832969, 2.1998405131586294, 2.1202321934057524, 1.9945075936757493, 1.6770944163139547]}}