{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:14.873732", "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-Apr-08_to_2011-Apr-10_17.5_-29.5"}, "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": 2011040001920}, "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 08 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 10 2011"}, "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": 83507.6003861492}, "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": ["Namibia", "South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-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": -29.5}, "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": 17.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "17.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 16.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 20.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, -28.0], [16.47, -27.47], [17.0, -27.25], [17.25, -27.35], [17.5, -27.25], [17.75, -27.35], [18.0, -27.25], [18.25, -27.35], [18.5, -27.25], [18.75, -27.35], [19.0, -27.25], [19.53, -27.47], [19.68, -27.82], [20.03, -27.97], [20.25, -28.5], [20.15, -28.75], [20.25, -29.0], [20.15, -29.25], [20.18, -29.32], [20.53, -29.47], [20.75, -30.0], [20.53, -30.53], [20.18, -30.68], [20.15, -30.75], [20.25, -31.0], [20.03, -31.53], [19.68, -31.68], [19.53, -32.03], [19.0, -32.25], [18.47, -32.03], [18.25, -31.5], [18.35, -31.25], [18.32, -31.18], [17.97, -31.03], [17.82, -30.68], [17.47, -30.53], [17.32, -30.18], [16.97, -30.03], [16.75, -29.5], [16.85, -29.25], [16.75, -29.0], [16.85, -28.75], [16.82, -28.68], [16.47, -28.53], [16.25, -28.0]]]]}, "2011-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, -28.0], [16.47, -27.47], [17.0, -27.25], [17.25, -27.35], [17.5, -27.25], [17.75, -27.35], [18.0, -27.25], [18.25, -27.35], [18.5, -27.25], [18.75, -27.35], [19.0, -27.25], [19.53, -27.47], [19.68, -27.82], [20.03, -27.97], [20.25, -28.5], [20.15, -28.75], [20.25, -29.0], [20.15, -29.25], [20.18, -29.32], [20.53, -29.47], [20.75, -30.0], [20.53, -30.53], [20.18, -30.68], [20.15, -30.75], [20.25, -31.0], [20.03, -31.53], [19.68, -31.68], [19.53, -32.03], [19.0, -32.25], [18.47, -32.03], [18.25, -31.5], [18.35, -31.25], [18.32, -31.18], [17.97, -31.03], [17.82, -30.68], [17.47, -30.53], [17.32, -30.18], [16.97, -30.03], [16.75, -29.5], [16.85, -29.25], [16.75, -29.0], [16.85, -28.75], [16.82, -28.68], [16.47, -28.53], [16.25, -28.0]]]]}, "2011-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.25, -28.0], [16.47, -27.47], [17.0, -27.25], [17.25, -27.35], [17.5, -27.25], [17.75, -27.35], [18.0, -27.25], [18.25, -27.35], [18.5, -27.25], [18.75, -27.35], [19.0, -27.25], [19.53, -27.47], [19.68, -27.82], [20.03, -27.97], [20.25, -28.5], [20.15, -28.75], [20.25, -29.0], [20.15, -29.25], [20.18, -29.32], [20.53, -29.47], [20.75, -30.0], [20.53, -30.53], [20.18, -30.68], [20.15, -30.75], [20.25, -31.0], [20.03, -31.53], [19.68, -31.68], [19.53, -32.03], [19.0, -32.25], [18.47, -32.03], [18.25, -31.5], [18.35, -31.25], [18.32, -31.18], [17.97, -31.03], [17.82, -30.68], [17.47, -30.53], [17.32, -30.18], [16.97, -30.03], [16.75, -29.5], [16.85, -29.25], [16.75, -29.0], [16.85, -28.75], [16.82, -28.68], [16.47, -28.53], [16.25, -28.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.356568742595016}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.008119813893147}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.472835837875834, 26.55774198785025, 27.09600545823031]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.462249114422377, 29.429651272146145, 30.571507981718298]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.72006883631857, 5.9010768691709545, 6.403213736189912]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.435501892750267, 6.684754021576339, 8.356568742595016]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4984701800773674, 1.5218002405067912, 1.6809281168650874]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9585216008341917, 1.840306354998731, 2.227167749188043]}}