{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:33.592285", "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-Nov-19_to_2017-Nov-21_4.0_18.0"}, "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": 2017110002263}, "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 19 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 21 2017"}, "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": 140911.09452708642}, "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": ["Algeria", "Mali", "Niger"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": []}, "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": 18.0}, "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": 4.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "4.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 2.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 8.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 18.53], [2.32, 18.68], [2.35, 18.75], [2.25, 19.0], [2.47, 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[2.35, 18.75], [2.25, 19.0], [2.47, 19.53], [2.82, 19.68], [2.97, 20.03], [3.5, 20.25], [3.75, 20.15], [4.0, 20.25], [4.53, 20.03], [4.68, 19.68], [4.75, 19.65], [5.0, 19.75], [5.25, 19.65], [5.5, 19.75], [5.75, 19.65], [6.0, 19.75], [6.53, 19.53], [6.68, 19.18], [6.75, 19.15], [6.82, 19.18], [6.85, 19.25], [6.75, 19.5], [6.85, 19.75], [6.75, 20.0], [6.97, 20.53], [7.5, 20.75], [8.03, 20.53], [8.18, 20.18], [8.53, 20.03], [8.75, 19.5], [8.65, 19.25], [8.75, 19.0], [8.53, 18.47], [8.18, 18.32], [8.03, 17.97], [7.63, 17.8], [7.75, 17.5], [7.53, 16.97], [7.0, 16.75], [6.75, 16.85], [6.5, 16.75], [6.25, 16.85], [6.18, 16.82], [6.15, 16.75], [6.25, 16.5], [6.03, 15.97], [5.5, 15.75], [5.25, 15.85], [5.0, 15.75], [4.47, 15.97], [4.3, 16.38], [4.0, 16.25], [3.75, 16.35], [3.5, 16.25], [2.97, 16.47], [2.82, 16.82], [2.75, 16.85], [2.5, 16.75], [1.97, 16.97], [1.75, 17.5], [1.85, 17.75], [1.75, 18.0], [1.97, 18.53]]]]}, "2017-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 18.53], [2.32, 18.68], [2.35, 18.75], [2.25, 19.0], [2.47, 19.53], [2.82, 19.68], [2.97, 20.03], [3.5, 20.25], [3.75, 20.15], [4.0, 20.25], [4.53, 20.03], [4.68, 19.68], [4.75, 19.65], [5.0, 19.75], [5.25, 19.65], [5.5, 19.75], [5.75, 19.65], [6.0, 19.75], [6.53, 19.53], [6.68, 19.18], [6.75, 19.15], [6.82, 19.18], [6.85, 19.25], [6.75, 19.5], [6.85, 19.75], [6.75, 20.0], [6.97, 20.53], [7.5, 20.75], [8.03, 20.53], [8.18, 20.18], [8.53, 20.03], [8.75, 19.5], [8.65, 19.25], [8.75, 19.0], [8.53, 18.47], [8.18, 18.32], [8.03, 17.97], [7.63, 17.8], [7.75, 17.5], [7.53, 16.97], [7.0, 16.75], [6.75, 16.85], [6.5, 16.75], [6.25, 16.85], [6.18, 16.82], [6.15, 16.75], [6.25, 16.5], [6.03, 15.97], [5.5, 15.75], [5.25, 15.85], [5.0, 15.75], [4.47, 15.97], [4.3, 16.38], [4.0, 16.25], [3.75, 16.35], [3.5, 16.25], [2.97, 16.47], [2.82, 16.82], [2.75, 16.85], [2.5, 16.75], [1.97, 16.97], [1.75, 17.5], [1.85, 17.75], [1.75, 18.0], [1.97, 18.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.229796427303086}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.34921070476096}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.86648125192727, 28.353972148944138, 28.339066990558138]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.539859158125807, 29.875515687556174, 29.65861293025381]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.941740508353689, 3.5091078303938823, 3.5967837755353087]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.469343051427586, 4.007768613623739, 4.229796427303086]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5331075937181555, 1.7993295998498642, 1.7999338724187284]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.821337994007122, 2.0687995997232083, 2.156834921370026]}}