{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:14.154184", "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": "2018-Sep-30_to_2018-Oct-04_2.5_6.0"}, "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": 2018090003040}, "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 30 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 04 2018"}, "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": 61371.795805755726}, "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": ["Benin", "Nigeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-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": ["Gulf of Guinea"]}, "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": 6.0}, "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": 2.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "2.5\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": 6.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 7.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 5.47], [1.75, 6.0], [1.97, 6.53], [2.5, 6.75], [2.75, 6.65], [3.0, 6.75], [3.53, 6.53], [3.75, 6.0], [3.53, 5.47], [3.0, 5.25], [2.75, 5.35], [2.5, 5.25], [1.97, 5.47]]]]}, "2018-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 5.47], [1.75, 6.0], [1.97, 6.53], [2.5, 6.75], [2.75, 6.65], [3.0, 6.75], [3.53, 6.53], [3.75, 6.0], [3.53, 5.47], [3.0, 5.25], [2.75, 5.35], [2.5, 5.25], [1.97, 5.47]]]]}, "2018-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.85, 6.75], [1.75, 7.0], [1.97, 7.53], [2.5, 7.75], [2.75, 7.65], [3.0, 7.75], [3.25, 7.65], [3.32, 7.68], [3.47, 8.03], [4.0, 8.25], [4.25, 8.15], [4.5, 8.25], [4.75, 8.15], [5.0, 8.25], [5.25, 8.15], [5.5, 8.25], [5.75, 8.15], [6.0, 8.25], [6.53, 8.03], [6.75, 7.5], [6.65, 7.25], [6.75, 7.0], [6.53, 6.47], [6.0, 6.25], [5.75, 6.35], [5.5, 6.25], [5.25, 6.35], [5.18, 6.32], [5.03, 5.97], [4.5, 5.75], [4.25, 5.85], [4.0, 5.75], [3.75, 5.85], [3.68, 5.82], [3.53, 5.47], [3.0, 5.25], [2.75, 5.35], [2.5, 5.25], [1.97, 5.47], [1.75, 6.0], [1.85, 6.25], [1.75, 6.5], [1.85, 6.75]]]]}, "2018-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.85, 6.75], [1.75, 7.0], [1.97, 7.53], [2.5, 7.75], [2.75, 7.65], [3.0, 7.75], [3.25, 7.65], [3.32, 7.68], [3.47, 8.03], [4.0, 8.25], [4.25, 8.15], [4.5, 8.25], [4.75, 8.15], [5.0, 8.25], [5.25, 8.15], [5.5, 8.25], [5.75, 8.15], [6.0, 8.25], [6.53, 8.03], [6.75, 7.5], [6.65, 7.25], [6.75, 7.0], [6.53, 6.47], [6.0, 6.25], [5.75, 6.35], [5.5, 6.25], [5.25, 6.35], [5.18, 6.32], [5.03, 5.97], [4.5, 5.75], [4.25, 5.85], [4.0, 5.75], [3.75, 5.85], [3.5, 5.75], [3.25, 5.85], [3.18, 5.82], [3.03, 5.47], [2.5, 5.25], [1.97, 5.47], [1.75, 6.0], [1.85, 6.25], [1.75, 6.5], [1.85, 6.75]]]]}, "2018-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 7.53], [2.5, 7.75], [2.75, 7.65], [3.0, 7.75], [3.25, 7.65], [3.32, 7.68], [3.47, 8.03], [4.0, 8.25], [4.25, 8.15], [4.5, 8.25], [4.75, 8.15], [5.0, 8.25], [5.25, 8.15], [5.5, 8.25], [5.75, 8.15], [6.0, 8.25], [6.53, 8.03], [6.75, 7.5], [6.65, 7.25], [6.75, 7.0], [6.53, 6.47], [6.0, 6.25], [5.75, 6.35], [5.5, 6.25], [5.25, 6.35], [5.18, 6.32], [5.03, 5.97], [4.5, 5.75], [4.25, 5.85], [4.0, 5.75], [3.75, 5.85], [3.5, 5.75], [3.25, 5.85], [3.0, 5.75], [2.75, 5.85], [2.5, 5.75], [1.97, 5.97], [1.75, 6.5], [1.85, 6.75], [1.75, 7.0], [1.97, 7.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.3415998417615924}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.2272396244628532}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.66768614298485, 26.660476701521247, 26.19547679386295, 26.783909591273243, 26.277850606575498]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.676074089045755, 26.667561085968543, 26.9242140188976, 27.29671315553452, 27.074858131703877]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.8509091296575377, 0.8280806901113351, 1.0052024970828484, 1.6282174237995892, 1.136858692158174]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.8836276294891832, 0.8597956955441077, 1.1842267795141197, 2.3415998417615924, 1.3426724783042232]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8237244085922812, 1.7518501229965302, 1.4811432788496965, 2.3143719106230316, 1.6113709428990852]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9135477095925162, 1.8342898807986767, 1.7013943496866262, 2.903780809945942, 1.8616185154652611]}}