{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:19.362949", "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-Feb-15_to_2017-Feb-18_24.5_-34.0"}, "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": 2017020001758}, "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": "February 15 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 18 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": 62906.8085975806}, "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": ["South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "W.Southern-Africa"]}, "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": -34.0}, "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": 24.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 28.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.82, -32.82], [24.97, -32.47], [25.5, -32.25], [26.03, -32.47], [26.25, -33.0], [26.03, -33.53], [25.68, -33.68], [25.53, -34.03], [25.18, -34.18], [25.03, -34.53], [24.5, -34.75], [23.97, -34.53], [23.75, -34.0], [23.97, -33.47], [24.32, -33.32], [24.47, -32.97], [24.82, -32.82]]]]}, "2017-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.47, -30.97], [24.0, -30.75], [24.25, -30.85], [24.5, -30.75], [24.75, -30.85], [25.0, -30.75], [25.25, -30.85], [25.5, -30.75], [25.75, -30.85], [26.0, -30.75], [26.25, -30.85], [26.5, -30.75], [26.75, -30.85], [27.0, -30.75], [27.25, -30.85], [27.32, -30.82], [27.47, -30.47], [27.82, -30.32], [27.97, -29.97], [28.5, -29.75], [29.03, -29.97], [29.25, -30.5], [29.15, -30.75], [29.25, -31.0], [29.03, -31.53], [28.5, -31.75], [28.25, -31.65], [28.18, -31.68], [28.03, -32.03], [27.5, -32.25], [27.25, -32.15], [27.18, -32.18], [27.03, -32.53], [26.5, -32.75], [26.25, -32.65], [26.13, -32.7], [26.25, -33.0], [26.03, -33.53], [25.68, -33.68], [25.53, -34.03], [25.18, -34.18], [25.03, -34.53], [24.5, -34.75], [23.97, -34.53], [23.75, -34.0], [23.88, -33.7], [23.47, -33.53], [23.25, -33.0], [23.46, -32.5], [23.25, -32.0], [23.35, -31.75], [23.25, -31.5], [23.47, -30.97]]]]}, "2017-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.47, -30.97], [24.0, -30.75], [24.25, -30.85], [24.5, -30.75], [24.75, -30.85], [25.0, -30.75], [25.25, -30.85], [25.5, -30.75], [25.75, -30.85], [26.0, -30.75], [26.25, -30.85], [26.5, -30.75], [26.75, -30.85], [27.0, -30.75], [27.25, -30.85], [27.32, -30.82], [27.47, -30.47], [27.82, -30.32], [27.97, -29.97], [28.5, -29.75], [29.03, -29.97], [29.25, -30.5], [29.15, -30.75], [29.25, -31.0], [29.03, -31.53], [28.5, -31.75], [28.25, -31.65], [28.18, -31.68], [28.03, -32.03], [27.5, -32.25], [27.25, -32.15], [27.18, -32.18], [27.03, -32.53], [26.5, -32.75], [26.25, -32.65], [26.13, -32.7], [26.25, -33.0], [26.03, -33.53], [25.68, -33.68], [25.53, -34.03], [25.18, -34.18], [25.03, -34.53], [24.5, -34.75], [23.97, -34.53], [23.75, -34.0], [23.88, -33.7], [23.47, -33.53], [23.25, -33.0], [23.46, -32.5], [23.25, -32.0], [23.35, -31.75], [23.25, -31.5], [23.47, -30.97]]]]}, "2017-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.47, -30.97], [24.0, -30.75], [24.25, -30.85], [24.5, -30.75], [24.75, -30.85], [25.0, -30.75], [25.25, -30.85], [25.5, -30.75], [25.75, -30.85], [26.0, -30.75], [26.25, -30.85], [26.5, -30.75], [26.75, -30.85], [27.0, -30.75], [27.25, -30.85], [27.32, -30.82], [27.47, -30.47], [27.82, -30.32], [27.97, -29.97], [28.5, -29.75], [29.03, -29.97], [29.25, -30.5], [29.15, -30.75], [29.25, -31.0], [29.03, -31.53], [28.5, -31.75], [28.25, -31.65], [28.18, -31.68], [28.03, -32.03], [27.5, -32.25], [27.25, -32.15], [27.18, -32.18], [27.03, -32.53], [26.5, -32.75], [26.25, -32.65], [26.0, -32.75], [25.75, -32.65], [25.68, -32.68], [25.65, -32.75], [25.75, -33.0], [25.53, -33.53], [25.0, -33.75], [24.5, -33.54], [24.0, -33.75], [23.47, -33.53], [23.25, -33.0], [23.46, -32.5], [23.25, -32.0], [23.35, -31.75], [23.25, -31.5], [23.47, -30.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.2803637654819795}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.9671126067883145}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.50388266281908, 23.922825553562575, 24.22441340849855, 23.774607163462917]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.98652379523736, 27.886370434965613, 28.211582381415383, 27.316169602860043]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.384314252095692, 3.806924319762814, 4.120121745916021, 3.9157171121990255]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.153438409364526, 5.103227068385252, 5.2803637654819795, 4.520557708448791]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8206093035818005, 1.399306502492396, 1.523895338290364, 1.4496685472347242]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.1820880105876475, 1.7914233912888085, 1.8332914886122074, 1.6158120618851668]}}