{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:08.641876", "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": "2023-Mar-24_to_2023-Mar-28_349.0_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": 2023030002358}, "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": "March 24 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 28 2023"}, "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": 58230.173363888316}, "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": ["C\u00f4te d'Ivoire", "Guinea", "Liberia", "Sierra Leone"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "Africa", "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": 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": 349.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "349.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 348.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-11.5, 9.25], [-11.25, 9.15], [-11.0, 9.25], [-10.75, 9.15], [-10.5, 9.25], [-10.25, 9.15], [-10.0, 9.25], [-9.47, 9.03], [-9.25, 8.5], [-9.35, 8.25], [-9.32, 8.18], [-8.97, 8.03], [-8.82, 7.68], [-8.75, 7.65], [-8.5, 7.75], [-7.97, 7.53], [-7.75, 7.0], [-7.85, 6.75], [-7.75, 6.5], [-7.97, 5.97], [-8.5, 5.75], [-8.75, 5.85], [-9.0, 5.75], [-9.25, 5.85], [-9.5, 5.75], [-9.75, 5.85], [-10.0, 5.75], [-10.25, 5.85], [-10.5, 5.75], [-11.03, 5.97], [-11.25, 6.5], [-11.12, 6.8], [-11.53, 6.97], [-11.75, 7.5], [-11.65, 7.75], [-11.68, 7.82], [-12.03, 7.97], [-12.25, 8.5], [-12.03, 9.03], [-11.5, 9.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.75, 8.5], [-11.529999999999973, 9.03], [-11.0, 9.25], [-10.75, 9.15], [-10.5, 9.25], [-10.25, 9.15], [-10.0, 9.25], [-9.470000000000027, 9.03], [-9.25, 8.5], [-9.350000000000023, 8.25], [-9.319999999999993, 8.18], [-8.970000000000027, 8.03], [-8.75, 7.5], [-8.970000000000027, 6.97], [-9.319999999999993, 6.82], [-9.470000000000027, 6.47], [-10.0, 6.25], [-10.529999999999973, 6.47], [-10.680000000000007, 6.82], [-10.75, 6.85], [-11.0, 6.75], [-11.529999999999973, 6.97], [-11.75, 7.5], [-11.54000000000002, 8.0], [-11.75, 8.5]]]]}, "2023-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.029999999999973, 7.97], [-12.25, 8.5], [-12.029999999999973, 9.03], [-11.5, 9.25], [-11.25, 9.15], [-11.0, 9.25], [-10.75, 9.15], [-10.5, 9.25], [-10.25, 9.15], [-10.0, 9.25], [-9.470000000000027, 9.03], [-9.25, 8.5], [-9.350000000000023, 8.25], [-9.319999999999993, 8.18], [-8.970000000000027, 8.03], [-8.819999999999993, 7.68], [-8.75, 7.65], [-8.5, 7.75], [-7.970000000000027, 7.53], [-7.75, 7.0], [-7.850000000000023, 6.75], [-7.75, 6.5], [-7.970000000000027, 5.97], [-8.5, 5.75], [-8.75, 5.85], [-9.0, 5.75], [-9.25, 5.85], [-9.5, 5.75], [-9.75, 5.85], [-10.0, 5.75], [-10.25, 5.85], [-10.5, 5.75], [-11.029999999999973, 5.97], [-11.25, 6.5], [-11.120000000000005, 6.8], [-11.529999999999973, 6.97], [-11.75, 7.5], [-11.649999999999977, 7.75], [-11.680000000000007, 7.82], [-12.029999999999973, 7.97]]]]}, "2023-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.029999999999973, 7.97], [-12.25, 8.5], [-12.029999999999973, 9.03], [-11.5, 9.25], [-11.25, 9.15], [-11.0, 9.25], [-10.75, 9.15], [-10.5, 9.25], [-10.25, 9.15], [-10.0, 9.25], [-9.470000000000027, 9.03], [-9.25, 8.5], [-9.350000000000023, 8.25], [-9.319999999999993, 8.18], [-8.970000000000027, 8.03], [-8.819999999999993, 7.68], [-8.75, 7.65], [-8.5, 7.75], [-7.970000000000027, 7.53], [-7.75, 7.0], [-7.850000000000023, 6.75], [-7.75, 6.5], [-7.970000000000027, 5.97], [-8.5, 5.75], [-8.75, 5.85], [-9.0, 5.75], [-9.25, 5.85], [-9.5, 5.75], [-9.75, 5.85], [-10.0, 5.75], [-10.25, 5.85], [-10.5, 5.75], [-11.029999999999973, 5.97], [-11.25, 6.5], [-11.120000000000005, 6.8], [-11.529999999999973, 6.97], [-11.75, 7.5], [-11.649999999999977, 7.75], [-11.680000000000007, 7.82], [-12.029999999999973, 7.97]]]]}, "2023-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.029999999999973, 7.97], [-12.25, 8.5], [-12.029999999999973, 9.03], [-11.5, 9.25], [-10.970000000000027, 9.03], [-10.819999999999993, 8.68], [-10.470000000000027, 8.53], [-10.25, 8.0], [-10.350000000000023, 7.75], [-10.300000000000011, 7.62], [-10.0, 7.75], [-9.5, 7.54], [-9.0, 7.75], [-8.75, 7.65], [-8.5, 7.75], [-7.970000000000027, 7.53], [-7.75, 7.0], [-7.850000000000023, 6.75], [-7.75, 6.5], [-7.970000000000027, 5.97], [-8.5, 5.75], [-8.75, 5.85], [-9.0, 5.75], [-9.25, 5.85], [-9.5, 5.75], [-9.75, 5.85], [-10.0, 5.75], [-10.25, 5.85], [-10.5, 5.75], [-11.029999999999973, 5.97], [-11.25, 6.5], [-11.120000000000005, 6.8], [-11.529999999999973, 6.97], [-11.75, 7.5], [-11.649999999999977, 7.75], [-11.680000000000007, 7.82], [-12.029999999999973, 7.97]]]]}, "2023-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.029999999999973, 7.97], [-12.25, 8.5], [-12.029999999999973, 9.03], [-11.5, 9.25], [-10.970000000000027, 9.03], [-10.819999999999993, 8.68], [-10.470000000000027, 8.53], [-10.25, 8.0], [-10.350000000000023, 7.75], [-10.300000000000011, 7.62], [-10.0, 7.75], [-9.5, 7.54], [-9.0, 7.75], [-8.75, 7.65], [-8.5, 7.75], [-7.970000000000027, 7.53], [-7.75, 7.0], [-7.850000000000023, 6.75], [-7.75, 6.5], [-7.970000000000027, 5.97], [-8.5, 5.75], [-8.75, 5.85], [-9.0, 5.75], [-9.25, 5.85], [-9.5, 5.75], [-9.75, 5.85], [-10.0, 5.75], [-10.25, 5.85], [-10.5, 5.75], [-11.029999999999973, 5.97], [-11.25, 6.5], [-11.120000000000005, 6.8], [-11.529999999999973, 6.97], [-11.75, 7.5], [-11.649999999999977, 7.75], [-11.680000000000007, 7.82], [-12.029999999999973, 7.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.948684514339959}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.633467678535047}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.68626291249916, 28.067118446051893, 28.489664311103468, 27.526045838195216, 27.87875081353002]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.748011969306447, 29.958136121166547, 29.988266600917598, 29.117145381697867, 29.877134180254586]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.3419162552038244, 1.7142704540054865, 2.1264247243701675, 1.107976126267178, 1.4329662879398795]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.5978643231853766, 2.7320123407457686, 2.948684514339959, 1.5688759939826582, 2.3885848069614894]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5359375338494121, 2.0791618871441533, 2.547657413714893, 1.4092934966374784, 1.8569364970805007]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8467847001241255, 2.7916078513742795, 3.132846855729677, 1.5756070025533822, 2.424601990026493]}}