{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:36.269833", "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-Apr-04_to_2023-Apr-06_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": 2023040001428}, "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 04 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 06 2023"}, "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": 64326.09879721023}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 347.0}, "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": [[[[-13.53, 9.03], [-13.0, 9.25], [-12.47, 9.03], [-12.32, 8.68], [-11.97, 8.53], [-11.82, 8.18], [-11.75, 8.15], [-11.68, 8.18], [-11.53, 8.53], [-11.0, 8.75], [-10.75, 8.65], [-10.68, 8.68], [-10.53, 9.03], [-10.0, 9.25], [-9.75, 9.15], [-9.5, 9.25], [-8.97, 9.03], [-8.82, 8.68], [-8.75, 8.65], [-8.5, 8.75], [-7.97, 8.53], [-7.75, 8.0], [-7.97, 7.47], [-8.5, 7.25], [-8.75, 7.35], [-8.82, 7.32], [-8.85, 7.25], [-8.75, 7.0], [-8.97, 6.47], [-9.5, 6.25], [-9.75, 6.35], [-9.82, 6.32], [-9.97, 5.97], [-10.5, 5.75], [-11.03, 5.97], [-11.18, 6.32], [-11.53, 6.47], [-11.68, 6.82], [-11.75, 6.85], [-12.0, 6.75], [-12.25, 6.85], [-12.5, 6.75], [-13.03, 6.97], [-13.25, 7.5], [-13.15, 7.75], [-13.18, 7.82], [-13.53, 7.97], [-13.75, 8.5], [-13.53, 9.03]]]]}}, "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": {"2023-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.529999999999973, 7.97], [-13.75, 8.5], [-13.529999999999973, 9.03], [-13.0, 9.25], [-12.470000000000027, 9.03], [-12.319999999999993, 8.68], [-11.970000000000027, 8.53], [-11.819999999999993, 8.18], [-11.75, 8.15], [-11.680000000000007, 8.18], [-11.529999999999973, 8.53], [-11.0, 8.75], [-10.75, 8.65], [-10.680000000000007, 8.68], [-10.529999999999973, 9.03], [-10.0, 9.25], [-9.75, 9.15], [-9.5, 9.25], [-8.970000000000027, 9.03], [-8.819999999999993, 8.68], [-8.75, 8.65], [-8.5, 8.75], [-7.970000000000027, 8.53], [-7.75, 8.0], [-7.970000000000027, 7.47], [-8.5, 7.25], [-8.75, 7.35], [-8.819999999999993, 7.32], [-8.850000000000023, 7.25], [-8.75, 7.0], [-8.970000000000027, 6.47], [-9.5, 6.25], [-9.75, 6.35], [-9.819999999999993, 6.32], [-9.970000000000027, 5.97], [-10.5, 5.75], [-11.029999999999973, 5.97], [-11.180000000000007, 6.32], [-11.529999999999973, 6.47], [-11.680000000000007, 6.82], [-11.75, 6.85], [-12.0, 6.75], [-12.25, 6.85], [-12.5, 6.75], [-13.029999999999973, 6.97], [-13.25, 7.5], [-13.149999999999977, 7.75], [-13.180000000000007, 7.82], [-13.529999999999973, 7.97]]]]}, "2023-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.529999999999973, 7.97], [-13.75, 8.5], [-13.529999999999973, 9.03], [-13.0, 9.25], [-12.470000000000027, 9.03], [-12.319999999999993, 8.68], [-11.970000000000027, 8.53], [-11.819999999999993, 8.18], [-11.75, 8.15], [-11.680000000000007, 8.18], [-11.529999999999973, 8.53], [-11.0, 8.75], [-10.75, 8.65], [-10.680000000000007, 8.68], [-10.529999999999973, 9.03], [-10.0, 9.25], [-9.75, 9.15], [-9.5, 9.25], [-8.970000000000027, 9.03], [-8.819999999999993, 8.68], [-8.75, 8.65], [-8.5, 8.75], [-7.970000000000027, 8.53], [-7.75, 8.0], [-7.970000000000027, 7.47], [-8.5, 7.25], [-8.75, 7.35], [-8.819999999999993, 7.32], [-8.850000000000023, 7.25], [-8.75, 7.0], [-8.970000000000027, 6.47], [-9.5, 6.25], [-9.75, 6.35], [-9.819999999999993, 6.32], [-9.970000000000027, 5.97], [-10.5, 5.75], [-11.029999999999973, 5.97], [-11.180000000000007, 6.32], [-11.529999999999973, 6.47], [-11.680000000000007, 6.82], [-11.75, 6.85], [-12.0, 6.75], [-12.25, 6.85], [-12.5, 6.75], [-13.029999999999973, 6.97], [-13.25, 7.5], [-13.149999999999977, 7.75], [-13.180000000000007, 7.82], [-13.529999999999973, 7.97]]]]}, "2023-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.529999999999973, 7.97], [-13.75, 8.5], [-13.529999999999973, 9.03], [-13.0, 9.25], [-12.470000000000027, 9.03], [-12.319999999999993, 8.68], [-11.970000000000027, 8.53], [-11.819999999999993, 8.18], [-11.75, 8.15], [-11.680000000000007, 8.18], [-11.529999999999973, 8.53], [-11.0, 8.75], [-10.75, 8.65], [-10.680000000000007, 8.68], [-10.529999999999973, 9.03], [-10.0, 9.25], [-9.75, 9.15], [-9.5, 9.25], [-8.970000000000027, 9.03], [-8.819999999999993, 8.68], [-8.75, 8.65], [-8.5, 8.75], [-7.970000000000027, 8.53], [-7.75, 8.0], [-7.970000000000027, 7.47], [-8.5, 7.25], [-8.75, 7.35], [-8.819999999999993, 7.32], [-8.850000000000023, 7.25], [-8.75, 7.0], [-8.970000000000027, 6.47], [-9.5, 6.25], [-9.75, 6.35], [-9.819999999999993, 6.32], [-9.970000000000027, 5.97], [-10.5, 5.75], [-11.029999999999973, 5.97], [-11.180000000000007, 6.32], [-11.529999999999973, 6.47], [-11.680000000000007, 6.82], [-11.75, 6.85], [-12.0, 6.75], [-12.25, 6.85], [-12.5, 6.75], [-13.029999999999973, 6.97], [-13.25, 7.5], [-13.149999999999977, 7.75], [-13.180000000000007, 7.82], [-13.529999999999973, 7.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.047053419291899}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.3981902407879965}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.749244115552983, 27.728914277223282, 27.4680322413177]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.16744872175235, 29.33084584722883, 28.859088262030866]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.4928579117211436, 1.487859080141629, 1.213853730501217]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.047053419291899, 1.9668058777722308, 1.5236478324216591]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.9247573587369797, 1.9740707771702783, 1.658280207532421]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.4521015635443804, 2.4973331789694893, 2.1457782305150133]}}