{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:37.280277", "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": "2019-Apr-21_to_2019-Apr-26_348.0_7.5"}, "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": 2019040002356}, "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": "April 21 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 26 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 167774.0829563938}, "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": ["Guinea", "Liberia", "Sierra Leone"]}, "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": ["North Atlantic Ocean"]}, "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": 7.5}, "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": 348.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "348.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 347.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.75, 7.5], [-12.53, 8.03], [-12.0, 8.25], [-11.47, 8.03], [-11.32, 7.68], [-10.97, 7.53], [-10.82, 7.18], [-10.75, 7.15], [-10.5, 7.25], [-9.97, 7.03], [-9.75, 6.5], [-9.97, 5.97], [-10.5, 5.75], [-10.75, 5.85], [-11.0, 5.75], [-11.53, 5.97], [-11.68, 6.32], [-12.03, 6.47], [-12.18, 6.82], [-12.53, 6.97], [-12.75, 7.5]]]]}, "2019-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 8.03], [-12.0, 8.25], [-11.47, 8.03], [-11.32, 7.68], [-10.97, 7.53], [-10.82, 7.18], [-10.75, 7.15], [-10.5, 7.25], [-9.97, 7.03], [-9.75, 6.5], [-9.97, 5.97], [-10.5, 5.75], [-10.75, 5.85], [-11.0, 5.75], [-11.53, 5.97], [-11.68, 6.32], [-12.03, 6.47], [-12.18, 6.82], [-12.53, 6.97], [-12.75, 7.5], [-12.53, 8.03]]], [[[-10.75, 11.65], [-10.5, 11.75], [-10.25, 11.65], [-10.0, 11.75], [-9.5, 11.54], [-9.0, 11.75], [-8.47, 11.53], [-8.25, 11.0], [-8.47, 10.47], [-8.87, 10.3], [-8.75, 10.0], [-8.97, 9.47], [-9.32, 9.32], [-9.47, 8.97], [-10.0, 8.75], [-10.53, 8.97], [-10.75, 9.5], [-10.62, 9.8], [-10.75, 9.85], [-11.0, 9.75], [-11.25, 9.85], [-11.5, 9.75], [-12.03, 9.97], [-12.25, 10.5], [-12.03, 11.03], [-11.68, 11.18], [-11.53, 11.53], [-11.0, 11.75], [-10.75, 11.65]]]]}, "2019-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 8.25], [-12.75, 8.5], [-12.53, 9.03], [-12.18, 9.18], [-12.15, 9.25], [-12.25, 9.5], [-12.04, 10.0], [-12.18, 10.32], [-12.53, 10.47], [-12.75, 11.0], [-12.53, 11.53], [-12.0, 11.75], [-11.75, 11.65], [-11.68, 11.68], [-11.53, 12.03], [-11.0, 12.25], [-10.75, 12.15], [-10.5, 12.25], [-9.97, 12.03], [-9.82, 11.68], [-9.75, 11.65], [-9.5, 11.75], [-9.25, 11.65], [-9.0, 11.75], [-8.47, 11.53], [-8.25, 11.0], [-8.35, 10.75], [-8.25, 10.5], [-8.35, 10.25], [-8.32, 10.18], [-7.97, 10.03], [-7.75, 9.5], [-7.97, 8.97], [-8.32, 8.82], [-8.47, 8.47], [-9.0, 8.25], [-9.25, 8.35], [-9.32, 8.32], [-9.35, 8.25], [-9.25, 8.0], [-9.47, 7.47], [-9.82, 7.32], [-9.96, 7.0], [-9.75, 6.5], [-9.97, 5.97], [-10.5, 5.75], [-10.75, 5.85], [-11.0, 5.75], [-11.53, 5.97], [-11.68, 6.32], [-12.03, 6.47], [-12.18, 6.82], [-12.53, 6.97], [-12.75, 7.5], [-12.65, 7.75], [-12.75, 8.0], [-12.65, 8.25]]]]}, "2019-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.25, 8.0], [-13.03, 8.53], [-12.68, 8.68], [-12.53, 9.03], [-12.18, 9.18], [-12.15, 9.25], [-12.25, 9.5], [-12.12, 9.8], [-12.53, 9.97], [-12.75, 10.5], [-12.65, 10.75], [-12.75, 11.0], [-12.53, 11.53], [-12.0, 11.75], [-11.75, 11.65], [-11.68, 11.68], [-11.53, 12.03], [-11.0, 12.25], [-10.75, 12.15], [-10.5, 12.25], [-9.97, 12.03], [-9.82, 11.68], [-9.75, 11.65], [-9.5, 11.75], [-9.25, 11.65], [-9.0, 11.75], [-8.47, 11.53], [-8.25, 11.0], [-8.35, 10.75], [-8.25, 10.5], [-8.35, 10.25], [-8.32, 10.18], [-7.97, 10.03], [-7.75, 9.5], [-7.97, 8.97], [-8.32, 8.82], [-8.47, 8.47], [-9.0, 8.25], [-9.25, 8.35], [-9.32, 8.32], [-9.35, 8.25], [-9.32, 8.18], [-8.97, 8.03], [-8.75, 7.5], [-8.97, 6.97], [-9.32, 6.82], [-9.47, 6.47], [-10.0, 6.25], [-10.5, 6.46], [-11.0, 6.25], [-11.25, 6.35], [-11.5, 6.25], [-12.03, 6.47], [-12.18, 6.82], [-12.53, 6.97], [-12.68, 7.32], [-13.03, 7.47], [-13.25, 8.0]]]]}, "2019-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.25, 8.0], [-13.03, 8.53], [-12.68, 8.68], [-12.53, 9.03], [-12.18, 9.18], [-12.15, 9.25], [-12.25, 9.5], [-12.12, 9.8], [-12.53, 9.97], [-12.75, 10.5], [-12.65, 10.75], [-12.75, 11.0], [-12.53, 11.53], [-12.0, 11.75], [-11.75, 11.65], [-11.68, 11.68], [-11.53, 12.03], [-11.0, 12.25], [-10.75, 12.15], [-10.5, 12.25], [-9.97, 12.03], [-9.82, 11.68], [-9.75, 11.65], [-9.5, 11.75], [-8.97, 11.53], [-8.82, 11.18], [-8.47, 11.03], [-8.25, 10.5], [-8.35, 10.25], [-8.32, 10.18], [-7.97, 10.03], [-7.75, 9.5], [-7.97, 8.97], [-8.32, 8.82], [-8.47, 8.47], [-9.0, 8.25], [-9.25, 8.35], [-9.32, 8.32], [-9.35, 8.25], [-9.32, 8.18], [-8.97, 8.03], [-8.75, 7.5], [-8.97, 6.97], [-9.32, 6.82], [-9.47, 6.47], [-10.0, 6.25], [-10.5, 6.46], [-11.0, 6.25], [-11.25, 6.35], [-11.5, 6.25], [-12.03, 6.47], [-12.18, 6.82], [-12.53, 6.97], [-12.68, 7.32], [-13.03, 7.47], [-13.25, 8.0]]]]}, "2019-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.18, 9.18], [-12.15, 9.25], [-12.25, 9.5], [-12.12, 9.8], [-12.53, 9.97], [-12.75, 10.5], [-12.65, 10.75], [-12.75, 11.0], [-12.53, 11.53], [-12.0, 11.75], [-11.75, 11.65], [-11.68, 11.68], [-11.53, 12.03], [-11.0, 12.25], [-10.47, 12.03], [-10.32, 11.68], [-9.97, 11.53], [-9.75, 11.0], [-9.85, 10.75], [-9.75, 10.5], [-9.97, 9.97], [-10.32, 9.82], [-10.37, 9.7], [-9.97, 9.53], [-9.75, 9.0], [-9.85, 8.75], [-9.75, 8.5], [-9.85, 8.25], [-9.8, 8.12], [-9.5, 8.25], [-8.97, 8.03], [-8.75, 7.5], [-8.97, 6.97], [-9.32, 6.82], [-9.47, 6.47], [-10.0, 6.25], [-10.5, 6.46], [-11.0, 6.25], [-11.53, 6.47], [-11.68, 6.82], [-12.03, 6.97], [-12.18, 7.32], [-12.25, 7.35], [-12.5, 7.25], [-13.03, 7.47], [-13.25, 8.0], [-13.03, 8.53], [-12.68, 8.68], [-12.53, 9.03], [-12.18, 9.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.0384168500116857}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.8376651680479197}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.837039526389162, 30.278730392668535, 29.499432939026633, 29.744956368146916, 29.56715572351942, 29.089602144000082]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.061842259364994, 33.14269415016247, 33.3539623917635, 33.69119520655539, 33.568753046961376, 32.96151957255171]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.1449761651469288, 1.4614383090250533, 1.7303339106850677, 2.0515225843237923, 1.9722166805561443, 1.6521107963106962]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.2851151161109442, 2.0326993572359697, 2.5740372132372045, 3.0384168500116857, 2.745273745969598, 2.1851330762233943]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8864063716483206, 1.4660100631415933, 1.7313109453813735, 1.9997508595907842, 1.9327263987225676, 1.5403969861588727]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.06165442645332, 1.7592909598290358, 2.264485535834605, 2.8567402788268708, 2.929320851421606, 2.130115227072514]}}