{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:46.081879", "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-Oct-18_to_2023-Oct-22_349.0_19.0"}, "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": 2023100001678}, "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": "October 18 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 22 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": 106154.7866976847}, "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": ["Mauritania", "Senegal"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 19.0}, "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": 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": 346.5}, "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": 16.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 17.75], [-12.75, 18.0], [-12.53, 18.53], [-12.18, 18.68], [-12.15, 18.75], [-12.25, 19.0], [-12.03, 19.53], [-11.68, 19.68], [-11.53, 20.03], [-11.0, 20.25], [-10.47, 20.03], [-10.32, 19.68], [-9.97, 19.53], [-9.82, 19.18], [-9.47, 19.03], [-9.25, 18.5], [-9.35, 18.25], [-9.25, 18.0], [-9.35, 17.75], [-9.32, 17.68], [-9.0, 17.54], [-8.5, 17.75], [-7.97, 17.53], [-7.75, 17.0], [-7.97, 16.47], [-8.32, 16.32], [-8.47, 15.97], [-9.0, 15.75], [-9.25, 15.85], [-9.5, 15.75], [-9.75, 15.85], [-10.0, 15.75], [-10.53, 15.97], [-10.68, 16.32], [-10.75, 16.35], [-10.82, 16.32], [-10.97, 15.97], [-11.5, 15.75], [-11.75, 15.85], [-11.82, 15.82], [-11.97, 15.47], [-12.5, 15.25], [-12.75, 15.35], [-13.0, 15.25], [-13.25, 15.35], [-13.5, 15.25], [-14.03, 15.47], [-14.25, 16.0], [-14.03, 16.53], [-13.68, 16.68], [-13.53, 17.03], [-13.18, 17.18], [-13.03, 17.53], [-12.68, 17.68], [-12.65, 17.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-10.25, 17.5], [-10.470000000000027, 16.97], [-11.0, 16.75], [-11.529999999999973, 16.97], [-11.75, 17.5], [-11.529999999999973, 18.03], [-11.0, 18.25], [-10.470000000000027, 18.03], [-10.25, 17.5]]], [[[-11.0, 20.25], [-10.470000000000027, 20.03], [-10.25, 19.5], [-10.350000000000023, 19.25], [-10.25, 19.0], [-10.470000000000027, 18.47], [-11.0, 18.25], [-11.25, 18.35], [-11.5, 18.25], [-12.029999999999973, 18.47], [-12.25, 19.0], [-12.029999999999973, 19.53], [-11.680000000000007, 19.68], [-11.529999999999973, 20.03], [-11.0, 20.25]]]]}, "2023-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.529999999999973, 17.03], [-13.180000000000007, 17.18], [-13.029999999999973, 17.53], [-12.680000000000007, 17.68], [-12.649999999999977, 17.75], [-12.75, 18.0], [-12.529999999999973, 18.53], [-12.180000000000007, 18.68], [-12.149999999999977, 18.75], [-12.25, 19.0], [-12.029999999999973, 19.53], [-11.680000000000007, 19.68], [-11.529999999999973, 20.03], [-11.0, 20.25], [-10.470000000000027, 20.03], [-10.319999999999993, 19.68], [-9.970000000000027, 19.53], [-9.819999999999993, 19.18], [-9.470000000000027, 19.03], [-9.25, 18.5], [-9.350000000000023, 18.25], [-9.25, 18.0], [-9.350000000000023, 17.75], [-9.319999999999993, 17.68], [-9.0, 17.54], [-8.5, 17.75], [-7.970000000000027, 17.53], [-7.75, 17.0], [-7.970000000000027, 16.47], [-8.319999999999993, 16.32], [-8.470000000000027, 15.97], [-9.0, 15.75], [-9.25, 15.85], [-9.5, 15.75], [-9.75, 15.85], [-10.0, 15.75], [-10.529999999999973, 15.97], [-10.680000000000007, 16.32], [-10.75, 16.35], [-10.819999999999993, 16.32], [-10.970000000000027, 15.97], [-11.5, 15.75], [-11.75, 15.85], [-11.819999999999993, 15.82], [-11.970000000000027, 15.47], [-12.5, 15.25], [-12.75, 15.35], [-13.0, 15.25], [-13.25, 15.35], [-13.5, 15.25], [-14.029999999999973, 15.47], [-14.25, 16.0], [-14.029999999999973, 16.53], [-13.680000000000007, 16.68], [-13.529999999999973, 17.03]]]]}, "2023-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.529999999999973, 17.03], [-13.180000000000007, 17.18], [-13.029999999999973, 17.53], [-12.680000000000007, 17.68], [-12.649999999999977, 17.75], [-12.75, 18.0], [-12.529999999999973, 18.53], [-12.180000000000007, 18.68], [-12.149999999999977, 18.75], [-12.25, 19.0], [-12.029999999999973, 19.53], [-11.680000000000007, 19.68], [-11.529999999999973, 20.03], [-11.0, 20.25], [-10.470000000000027, 20.03], [-10.319999999999993, 19.68], [-9.970000000000027, 19.53], [-9.819999999999993, 19.18], [-9.470000000000027, 19.03], [-9.25, 18.5], [-9.350000000000023, 18.25], [-9.25, 18.0], [-9.350000000000023, 17.75], [-9.319999999999993, 17.68], [-9.0, 17.54], [-8.5, 17.75], [-7.970000000000027, 17.53], [-7.75, 17.0], [-7.970000000000027, 16.47], [-8.319999999999993, 16.32], [-8.470000000000027, 15.97], [-9.0, 15.75], [-9.25, 15.85], [-9.5, 15.75], [-9.75, 15.85], [-10.0, 15.75], [-10.529999999999973, 15.97], [-10.680000000000007, 16.32], [-10.75, 16.35], [-10.819999999999993, 16.32], [-10.970000000000027, 15.97], [-11.5, 15.75], [-11.75, 15.85], [-11.819999999999993, 15.82], [-11.970000000000027, 15.47], [-12.5, 15.25], [-12.75, 15.35], [-13.0, 15.25], [-13.25, 15.35], [-13.5, 15.25], [-14.029999999999973, 15.47], [-14.25, 16.0], [-14.029999999999973, 16.53], [-13.680000000000007, 16.68], [-13.529999999999973, 17.03]]]]}, "2023-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.529999999999973, 17.03], [-13.180000000000007, 17.18], [-13.029999999999973, 17.53], [-12.680000000000007, 17.68], [-12.649999999999977, 17.75], [-12.75, 18.0], [-12.529999999999973, 18.53], [-12.180000000000007, 18.68], [-12.029999999999973, 19.03], [-11.680000000000007, 19.18], [-11.529999999999973, 19.53], [-11.0, 19.75], [-10.75, 19.65], [-10.5, 19.75], [-9.970000000000027, 19.53], [-9.819999999999993, 19.18], [-9.470000000000027, 19.03], [-9.25, 18.5], [-9.350000000000023, 18.25], [-9.25, 18.0], [-9.350000000000023, 17.75], [-9.319999999999993, 17.68], [-9.0, 17.54], [-8.5, 17.75], [-7.970000000000027, 17.53], [-7.75, 17.0], [-7.970000000000027, 16.47], [-8.319999999999993, 16.32], [-8.470000000000027, 15.97], [-9.0, 15.75], [-9.25, 15.85], [-9.5, 15.75], [-9.75, 15.85], [-10.0, 15.75], [-10.529999999999973, 15.97], [-10.680000000000007, 16.32], [-10.75, 16.35], [-10.819999999999993, 16.32], [-10.970000000000027, 15.97], [-11.5, 15.75], [-11.75, 15.85], [-11.819999999999993, 15.82], [-11.970000000000027, 15.47], [-12.5, 15.25], [-12.75, 15.35], [-13.0, 15.25], [-13.25, 15.35], [-13.5, 15.25], [-14.029999999999973, 15.47], [-14.25, 16.0], [-14.029999999999973, 16.53], [-13.680000000000007, 16.68], [-13.529999999999973, 17.03]]]]}, "2023-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.25, 19.0], [-11.029999999999973, 19.53], [-10.5, 19.75], [-9.970000000000027, 19.53], [-9.819999999999993, 19.18], [-9.470000000000027, 19.03], [-9.25, 18.5], [-9.470000000000027, 17.97], [-10.0, 17.75], [-10.25, 17.85], [-10.5, 17.75], [-11.029999999999973, 17.97], [-11.25, 18.5], [-11.149999999999977, 18.75], [-11.25, 19.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.6657516275789135}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.073801187371777}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.084326501492455, 34.3566463239689, 35.11482289182811, 33.77472887585924, 30.920351468304204]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.17172212889869, 36.35111511310646, 37.435464170324394, 35.50619964754452, 31.324235980733704]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.245630325730147, 2.983134886785308, 3.857344722625069, 2.513170668751089, 2.2173147312598758]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.537215940661838, 3.695139709906414, 4.6657516275789135, 3.385853943949371, 2.2567050129351856]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2684707109484572, 1.6168574660642048, 2.143307728485925, 1.393467027488111, 1.1420953388445751]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.460090498638457, 2.0365565701296173, 2.52993995774686, 1.9246922133763829, 1.183555372607757]}}