{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:57:02.467211", "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": "2025-Sep-09_to_2025-Sep-11_6.0_5.5"}, "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": 2025090001467}, "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 09 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 11 2025"}, "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": 76786.3559402744}, "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": ["Nigeria"]}, "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": ["Gulf of Guinea"]}, "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": 5.5}, "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": 6.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "6.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 5.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 8.75}, "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": 8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.85, 6.25], [4.75, 6.5], [4.97, 7.03], [5.32, 7.18], [5.47, 7.53], [5.82, 7.68], [5.97, 8.03], [6.5, 8.25], [6.75, 8.15], [7.0, 8.25], [7.25, 8.15], [7.32, 8.18], [7.47, 8.53], [8.0, 8.75], [8.25, 8.65], [8.5, 8.75], [9.03, 8.53], [9.25, 8.0], [9.03, 7.47], [8.68, 7.32], [8.53, 6.97], [8.18, 6.82], [8.03, 6.47], [7.68, 6.32], [7.65, 6.25], [7.75, 6.0], [7.53, 5.47], [7.18, 5.32], [7.15, 5.25], [7.18, 5.18], [7.53, 5.03], [7.75, 4.5], [7.53, 3.97], [7.0, 3.75], [6.75, 3.85], [6.5, 3.75], [5.97, 3.97], [5.82, 4.32], [5.47, 4.47], [5.32, 4.82], [4.97, 4.97], [4.75, 5.5], [4.85, 5.75], [4.75, 6.0], [4.85, 6.25]]]]}, "2025-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.85, 6.25], [4.75, 6.5], [4.97, 7.03], [5.32, 7.18], [5.47, 7.53], [5.82, 7.68], [5.97, 8.03], [6.5, 8.25], [6.75, 8.15], [7.0, 8.25], [7.25, 8.15], [7.32, 8.18], [7.47, 8.53], [8.0, 8.75], [8.25, 8.65], [8.5, 8.75], [9.03, 8.53], [9.25, 8.0], [9.03, 7.47], [8.68, 7.32], [8.53, 6.97], [8.18, 6.82], [8.03, 6.47], [7.68, 6.32], [7.65, 6.25], [7.75, 6.0], [7.53, 5.47], [7.18, 5.32], [7.15, 5.25], [7.18, 5.18], [7.53, 5.03], [7.75, 4.5], [7.53, 3.97], [7.0, 3.75], [6.75, 3.85], [6.5, 3.75], [5.97, 3.97], [5.82, 4.32], [5.47, 4.47], [5.32, 4.82], [4.97, 4.97], [4.75, 5.5], [4.85, 5.75], [4.75, 6.0], [4.85, 6.25]]]]}, "2025-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.85, 6.25], [4.75, 6.5], [4.97, 7.03], [5.32, 7.18], [5.47, 7.53], [5.82, 7.68], [5.97, 8.03], [6.5, 8.25], [6.75, 8.15], [7.0, 8.25], [7.25, 8.15], [7.32, 8.18], [7.47, 8.53], [8.0, 8.75], [8.25, 8.65], [8.5, 8.75], [9.03, 8.53], [9.25, 8.0], [9.03, 7.47], [8.68, 7.32], [8.53, 6.97], [8.18, 6.82], [8.03, 6.47], [7.68, 6.32], [7.65, 6.25], [7.75, 6.0], [7.53, 5.47], [7.18, 5.32], [7.15, 5.25], [7.18, 5.18], [7.53, 5.03], [7.75, 4.5], [7.53, 3.97], [7.0, 3.75], [6.75, 3.85], [6.5, 3.75], [5.97, 3.97], [5.82, 4.32], [5.47, 4.47], [5.32, 4.82], [4.97, 4.97], [4.75, 5.5], [4.85, 5.75], [4.75, 6.0], [4.85, 6.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.3572401767166298}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.5233340143785934}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.11208353678387, 26.94562281290689, 26.637466278076204]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.440296427408896, 28.604675547281943, 27.61922734578451]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.084828140870352, 1.905906919451577, 1.5792669828138515]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.4231947197816908, 2.3572401767166298, 2.0093795628424687]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5445237869736541, 2.6393848582642443, 2.220932216458907]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.872244245256684, 3.0376290743492005, 2.957414047690667]}}