{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:58.728230", "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-Sep-18_to_2017-Sep-21_12.5_1.5"}, "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": 2017090002159}, "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": "September 18 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 21 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": 120430.13191400238}, "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": ["Cameroon", "Equatorial Guinea", "Gabon"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": 1.5}, "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": 12.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "12.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 9.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 13.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, 3.03], [10.0, 3.25], [10.3, 3.13], [10.47, 3.53], [10.82, 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1.5], [13.53, 0.97], [13.0, 0.75], [12.75, 0.85], [12.68, 0.82], [12.53, 0.47], [12.18, 0.32], [12.15, 0.25], [12.25, 0.0], [12.03, -0.53], [11.5, -0.75], [10.97, -0.53], [10.82, -0.18], [10.75, -0.15], [10.5, -0.25], [9.97, -0.03], [9.75, 0.5], [9.88, 0.8], [9.47, 0.97], [9.25, 1.5], [9.35, 1.75], [9.25, 2.0], [9.35, 2.25]]]]}, "2017-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, 2.53], [9.88, 2.7], [9.75, 3.0], [9.97, 3.53], [10.5, 3.75], [11.03, 3.53], [11.25, 3.0], [11.35, 3.25], [11.25, 3.5], [11.47, 4.03], [12.0, 4.25], [12.53, 4.03], [12.68, 3.68], [12.75, 3.65], [13.0, 3.75], [13.53, 3.53], [13.68, 3.18], [14.03, 3.03], [14.25, 2.5], [14.03, 1.97], [13.68, 1.82], [13.65, 1.75], [13.75, 1.5], [13.53, 0.97], [13.0, 0.75], [12.75, 0.85], [12.68, 0.82], [12.53, 0.47], [12.18, 0.32], [12.15, 0.25], [12.25, 0.0], [12.03, -0.53], [11.5, -0.75], [10.97, -0.53], [10.82, -0.18], [10.75, -0.15], [10.5, -0.25], [9.97, -0.03], [9.75, 0.5], [9.88, 0.8], [9.47, 0.97], [9.25, 1.5], [9.35, 1.75], [9.25, 2.0], [9.47, 2.53]], [[11.13, 2.7], [11.25, 2.65], [11.32, 2.68], [11.35, 2.75], [11.25, 3.0], [11.13, 2.7]], [[11.32, 1.18], [11.38, 1.3], [11.25, 1.35], [11.18, 1.32], [11.13, 1.2], [11.25, 1.15], [11.32, 1.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.1207722669946634}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.3659512920143881}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.751669873933338, 24.914279335734136, 24.652990555514407, 24.817411585328898]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.58395198160582, 26.958548303650502, 26.61864429659164, 26.668101015396985]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.3600898141669437, 1.5527559173528083, 1.266569790717088, 1.2266317218864258]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.1207722669946634, 1.9973016592215345, 1.4834735431451804, 1.8899332671459206]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7284359057870147, 1.9622614869905919, 1.6145827967172208, 1.521262756644963]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.4997443091112275, 2.4435604972920344, 2.2022596783968424, 2.0540283967739557]}}