{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:29.064119", "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": "2011-May-03_to_2011-May-07_9.5_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": 2011050001689}, "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": "May 03 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 07 2011"}, "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": 95387.68384918098}, "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": ["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": 9.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "9.5\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": 10.25}, "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": 6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.5, 6.25], [10.03, 6.03], [10.25, 5.5], [10.03, 4.97], [9.5, 4.75], [8.97, 4.97], [8.75, 5.5], [8.97, 6.03], [9.5, 6.25]]]]}, "2011-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.97, 6.03], [8.5, 6.25], [8.75, 6.15], [9.0, 6.25], [9.25, 6.15], [9.5, 6.25], [9.75, 6.15], [10.0, 6.25], [10.53, 6.03], [10.75, 5.5], [10.65, 5.25], [10.75, 5.0], [10.53, 4.47], [10.0, 4.25], [9.75, 4.35], [9.68, 4.32], [9.53, 3.97], [9.0, 3.75], [8.47, 3.97], [8.32, 4.32], [7.97, 4.47], [7.75, 5.0], [7.85, 5.25], [7.75, 5.5], [7.97, 6.03]]]]}, "2011-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.97, 7.03], [5.5, 7.25], [6.03, 7.03], [6.18, 6.68], [6.25, 6.65], [6.5, 6.75], [6.75, 6.65], [7.0, 6.75], [7.5, 6.54], [8.0, 6.75], [8.25, 6.65], [8.5, 6.75], [8.75, 6.65], [9.0, 6.75], [9.25, 6.65], [9.32, 6.68], [9.47, 7.03], [10.0, 7.25], [10.53, 7.03], [10.75, 6.5], [10.65, 6.25], [10.75, 6.0], [10.65, 5.75], [10.75, 5.5], [10.65, 5.25], [10.75, 5.0], [10.65, 4.75], [10.75, 4.5], [10.53, 3.97], [10.0, 3.75], [9.75, 3.85], [9.5, 3.75], [9.25, 3.85], [9.0, 3.75], [8.47, 3.97], [8.32, 4.32], [8.25, 4.35], [8.18, 4.32], [8.03, 3.97], [7.5, 3.75], [6.97, 3.97], [6.82, 4.32], [6.75, 4.35], [6.5, 4.25], [6.25, 4.35], [6.0, 4.25], [5.47, 4.47], [5.25, 5.0], [5.38, 5.3], [4.97, 5.47], [4.75, 6.0], [4.85, 6.25], [4.75, 6.5], [4.97, 7.03]]]]}, "2011-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.97, 7.03], [5.5, 7.25], [6.03, 7.03], [6.18, 6.68], [6.25, 6.65], [6.5, 6.75], [6.75, 6.65], [7.0, 6.75], [7.5, 6.54], [8.0, 6.75], [8.25, 6.65], [8.5, 6.75], [8.75, 6.65], [9.0, 6.75], [9.25, 6.65], [9.32, 6.68], [9.47, 7.03], [10.0, 7.25], [10.53, 7.03], [10.75, 6.5], [10.65, 6.25], [10.75, 6.0], [10.65, 5.75], [10.75, 5.5], [10.65, 5.25], [10.75, 5.0], [10.65, 4.75], [10.75, 4.5], [10.53, 3.97], [10.0, 3.75], [9.75, 3.85], [9.5, 3.75], [9.25, 3.85], [9.0, 3.75], [8.47, 3.97], [8.32, 4.32], [8.25, 4.35], [8.18, 4.32], [8.03, 3.97], [7.5, 3.75], [6.97, 3.97], [6.82, 4.32], [6.75, 4.35], [6.5, 4.25], 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anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.0949895289699043}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.3366080901534203}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.98405900502638, 25.731327655020493, 26.97216918634831, 27.078384035473448, 27.088367852684144]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.98405900502638, 27.63199577600284, 28.868702883285778, 29.145643599912717, 29.423227429960036]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.3237353869658932, 1.2014882670931304, 1.2541653514716333, 1.391834074308371, 1.4034684288973578]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The 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