{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:28.389520", "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": "2013-May-23_to_2013-May-25_6.5_6.5"}, "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": 2013050002555}, "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": "May 23 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 25 2013"}, "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": 52282.43978022768}, "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": ["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": []}, "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": 6.5}, "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": 6.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "6.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 5.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 7.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.85, 6.25], [4.75, 6.5], [4.97, 7.03], [5.5, 7.25], [5.75, 7.15], [6.0, 7.25], [6.25, 7.15], [6.5, 7.25], [6.75, 7.15], [7.0, 7.25], [7.53, 7.03], [7.68, 6.68], [8.03, 6.53], [8.25, 6.0], [8.15, 5.75], [8.25, 5.5], [8.03, 4.97], [7.68, 4.82], [7.53, 4.47], [7.18, 4.32], [7.03, 3.97], [6.5, 3.75], [5.97, 3.97], [5.82, 4.32], [5.47, 4.47], [5.32, 4.82], [4.97, 4.97], [4.75, 5.5], [4.85, 5.75], [4.75, 6.0], [4.85, 6.25]]]]}, "2013-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.85, 6.25], [4.75, 6.5], [4.97, 7.03], [5.5, 7.25], [5.75, 7.15], [6.0, 7.25], [6.25, 7.15], [6.5, 7.25], [6.75, 7.15], [7.0, 7.25], [7.53, 7.03], [7.68, 6.68], [8.03, 6.53], [8.25, 6.0], [8.15, 5.75], [8.25, 5.5], [8.03, 4.97], [7.68, 4.82], [7.53, 4.47], [7.18, 4.32], [7.03, 3.97], [6.5, 3.75], [5.97, 3.97], [5.82, 4.32], [5.47, 4.47], [5.32, 4.82], [4.97, 4.97], [4.75, 5.5], [4.85, 5.75], [4.75, 6.0], [4.85, 6.25]]]]}, "2013-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.85, 6.25], [4.75, 6.5], [4.97, 7.03], [5.5, 7.25], [5.75, 7.15], [6.0, 7.25], [6.25, 7.15], [6.5, 7.25], [6.75, 7.15], [7.0, 7.25], [7.53, 7.03], [7.68, 6.68], [8.03, 6.53], [8.25, 6.0], [8.15, 5.75], [8.25, 5.5], [8.03, 4.97], [7.68, 4.82], [7.53, 4.47], [7.18, 4.32], [7.03, 3.97], [6.5, 3.75], [5.97, 3.97], [5.82, 4.32], [5.47, 4.47], [5.32, 4.82], [4.97, 4.97], [4.75, 5.5], [4.85, 5.75], [4.75, 6.0], [4.85, 6.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.0636873877461994}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5132943234690848}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.628967274465765, 28.14112705681856, 27.775005346202818]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.34794511201926, 28.7624864363616, 28.662698264524124]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2474712483863655, 1.8080822589162386, 1.48432946310465]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.5037354673935965, 2.0636873877461994, 1.6935276753727635]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5455114624854693, 2.222544327261116, 1.7851042652830809]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8122808925743086, 2.520533878347357, 2.026909616181992]}}