{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:07.891650", "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": "2018-Sep-18_to_2018-Sep-22_11.5_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": 2018090002316}, "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": "September 18 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 2018"}, "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": 52253.67103536276}, "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": ["Cameroon", "Nigeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "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": 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": 11.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "11.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 14.75}, "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": 7.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, 4.97], [13.75, 5.5], [13.97, 6.03], [14.5, 6.25], [15.03, 6.03], [15.25, 5.5], [15.03, 4.97], [14.5, 4.75], [13.97, 4.97]]], [[[11.25, 6.0], [11.47, 6.53], [11.88, 6.7], [11.75, 7.0], [11.85, 7.25], [11.75, 7.5], [11.97, 8.03], [12.5, 8.25], [13.03, 8.03], [13.18, 7.68], [13.53, 7.53], [13.75, 7.0], [13.53, 6.47], [13.0, 6.25], [12.75, 6.35], [12.63, 6.3], [12.68, 6.18], [13.03, 6.03], [13.18, 5.68], [13.53, 5.53], [13.75, 5.0], [13.65, 4.75], [13.75, 4.5], [13.53, 3.97], [13.0, 3.75], [12.47, 3.97], [12.32, 4.32], [12.25, 4.35], [12.0, 4.25], [11.47, 4.47], [11.25, 5.0], [11.35, 5.25], [11.25, 5.5], [11.35, 5.75], [11.25, 6.0]]]]}, "2018-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, 4.97], [13.75, 5.5], [13.97, 6.03], [14.5, 6.25], [15.03, 6.03], [15.25, 5.5], [15.03, 4.97], [14.5, 4.75], [13.97, 4.97]]], [[[10.97, 8.03], [11.5, 8.25], [12.0, 8.04], [12.5, 8.25], [13.03, 8.03], [13.18, 7.68], [13.53, 7.53], [13.75, 7.0], [13.65, 6.75], [13.75, 6.5], [13.53, 5.97], [13.13, 5.8], [13.18, 5.68], [13.53, 5.53], [13.75, 5.0], [13.65, 4.75], [13.75, 4.5], [13.53, 3.97], [13.0, 3.75], [12.47, 3.97], [12.32, 4.32], [12.25, 4.35], [12.0, 4.25], [11.47, 4.47], [11.25, 5.0], [11.35, 5.25], [11.25, 5.5], [11.35, 5.75], [11.25, 6.0], [11.46, 6.5], [11.32, 6.82], [10.97, 6.97], [10.75, 7.5], [10.97, 8.03]]]]}, "2018-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 7.5], [10.97, 8.03], [11.5, 8.25], [12.0, 8.04], [12.5, 8.25], [13.03, 8.03], [13.18, 7.68], [13.53, 7.53], [13.75, 7.0], [13.65, 6.75], [13.75, 6.5], [13.63, 6.2], [13.75, 6.15], [14.0, 6.25], [14.25, 6.15], [14.5, 6.25], [15.03, 6.03], [15.25, 5.5], [15.03, 4.97], [14.5, 4.75], [14.25, 4.85], [14.0, 4.75], [13.75, 4.85], [13.68, 4.82], [13.65, 4.75], [13.75, 4.5], [13.53, 3.97], [13.0, 3.75], [12.47, 3.97], [12.32, 4.32], [12.25, 4.35], [12.0, 4.25], [11.47, 4.47], [11.25, 5.0], [11.35, 5.25], [11.25, 5.5], [11.35, 5.75], [11.25, 6.0], [11.46, 6.5], [11.32, 6.82], [10.97, 6.97], [10.75, 7.5]]]]}, "2018-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 7.5], [10.97, 8.03], [11.5, 8.25], [12.0, 8.04], [12.5, 8.25], [13.03, 8.03], [13.18, 7.68], [13.53, 7.53], [13.75, 7.0], [13.65, 6.75], [13.75, 6.5], [13.63, 6.2], [13.75, 6.15], [14.0, 6.25], [14.53, 6.03], [14.75, 5.5], [14.53, 4.97], [14.0, 4.75], [13.75, 4.85], [13.5, 4.75], [12.97, 4.97], [12.75, 5.5], [12.88, 5.8], [12.75, 5.85], [12.5, 5.75], [11.97, 5.97], [11.82, 6.32], [11.47, 6.47], [11.32, 6.82], [10.97, 6.97], [10.75, 7.5]]]]}, "2018-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.75, 7.5], [11.97, 8.03], [12.5, 8.25], [13.03, 8.03], [13.25, 7.5], [13.13, 7.2], [13.53, 7.03], [13.75, 6.5], [13.63, 6.2], [13.75, 6.15], [14.0, 6.25], [14.53, 6.03], [14.75, 5.5], [14.53, 4.97], [14.0, 4.75], [13.75, 4.85], [13.5, 4.75], [12.97, 4.97], [12.75, 5.5], [12.88, 5.8], [12.47, 5.97], [12.25, 6.5], [12.38, 6.8], [11.97, 6.97], [11.75, 7.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.9535941588384844}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.2694636040534089}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.502395050893995, 23.46846948670867, 23.96858621066815, 23.10355871444358, 23.60213498658686]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.831536385212644, 25.132935142706287, 25.545281708484083, 24.82116288670244, 24.417325831421238]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.0994889549405427, 1.161431666975932, 1.6037783235203231, 1.003698188826796, 1.25270692587317]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.3788474008119351, 1.460924203909201, 1.9535941588384844, 1.3477041309208175, 1.7188163447119678]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5434678033425067, 1.642731094287618, 2.207886863954138, 1.445878051887802, 1.642808929642812]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.882507107480438, 1.9523826923526746, 3.0184332128061597, 2.23293719506162, 2.0817644336377423]}}