{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:12.812161", "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-Aug-09_to_2011-Aug-12_2.5_12.5"}, "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": 2011080002292}, "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": "August 09 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 12 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 81383.93009533535}, "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": ["Benin", "Burkina Faso", "Niger", "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": []}, "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": 12.5}, "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": 2.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "2.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -0.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 5.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 13.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 13.03], [2.5, 13.25], [2.75, 13.15], [3.0, 13.25], [3.25, 13.15], [3.5, 13.25], [3.75, 13.15], [4.0, 13.25], [4.25, 13.15], [4.5, 13.25], [4.75, 13.15], [5.0, 13.25], [5.25, 13.15], [5.5, 13.25], [6.03, 13.03], [6.25, 12.5], [6.03, 11.97], [5.5, 11.75], [5.25, 11.85], [5.18, 11.82], [5.03, 11.47], [4.5, 11.25], [3.97, 11.47], [3.82, 11.82], [3.75, 11.85], [3.5, 11.75], [3.25, 11.85], [3.18, 11.82], [3.03, 11.47], [2.5, 11.25], [1.97, 11.47], [1.75, 12.0], [1.85, 12.25], [1.75, 12.5], [1.97, 13.03]]]]}, "2011-08-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.0, 14.25], [0.53, 14.03], [0.68, 13.68], [0.75, 13.65], [0.82, 13.68], [0.97, 14.03], [1.5, 14.25], [2.0, 14.04], [2.5, 14.25], [2.75, 14.15], [3.0, 14.25], [3.53, 14.03], [3.68, 13.68], [3.75, 13.65], [4.0, 13.75], [4.25, 13.65], [4.5, 13.75], [5.03, 13.53], [5.18, 13.18], [5.25, 13.15], [5.5, 13.25], [6.03, 13.03], [6.25, 12.5], [6.03, 11.97], [5.5, 11.75], [5.25, 11.85], [5.18, 11.82], [5.03, 11.47], [4.5, 11.25], [3.97, 11.47], [3.82, 11.82], [3.75, 11.85], [3.68, 11.82], [3.53, 11.47], [3.0, 11.25], [2.75, 11.35], [2.5, 11.25], [1.97, 11.47], [1.82, 11.82], [1.5, 11.96], [1.0, 11.75], [0.47, 11.97], [0.32, 12.32], [0.25, 12.35], [0.0, 12.25], [-0.25, 12.35], [-0.5, 12.25], [-1.03, 12.47], [-1.25, 13.0], [-1.03, 13.53], [-0.68, 13.68], [-0.53, 14.03], [0.0, 14.25]]]]}, "2011-08-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.0, 14.25], [0.53, 14.03], [0.68, 13.68], [0.75, 13.65], [0.82, 13.68], [0.97, 14.03], [1.5, 14.25], [2.0, 14.04], [2.5, 14.25], [2.75, 14.15], [3.0, 14.25], [3.53, 14.03], [3.68, 13.68], [3.75, 13.65], [4.0, 13.75], [4.25, 13.65], [4.5, 13.75], [5.03, 13.53], [5.18, 13.18], [5.25, 13.15], [5.5, 13.25], [6.03, 13.03], [6.25, 12.5], [6.03, 11.97], [5.5, 11.75], [5.25, 11.85], [5.18, 11.82], [5.03, 11.47], [4.5, 11.25], [3.97, 11.47], [3.82, 11.82], [3.75, 11.85], [3.68, 11.82], [3.53, 11.47], [3.0, 11.25], [2.75, 11.35], [2.5, 11.25], [1.97, 11.47], [1.82, 11.82], [1.5, 11.96], [1.0, 11.75], [0.47, 11.97], [0.32, 12.32], [0.25, 12.35], [0.0, 12.25], [-0.25, 12.35], [-0.5, 12.25], [-1.03, 12.47], [-1.25, 13.0], [-1.03, 13.53], [-0.68, 13.68], [-0.53, 14.03], [0.0, 14.25]]]]}, "2011-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.0, 14.25], [0.53, 14.03], [0.68, 13.68], [0.75, 13.65], [0.82, 13.68], [0.97, 14.03], [1.5, 14.25], [2.0, 14.04], [2.5, 14.25], [2.75, 14.15], [3.0, 14.25], [3.53, 14.03], [3.68, 13.68], [3.75, 13.65], [4.0, 13.75], [4.25, 13.65], [4.5, 13.75], [5.03, 13.53], [5.18, 13.18], [5.53, 13.03], [5.75, 12.5], [5.53, 11.97], [5.0, 11.75], [4.75, 11.85], [4.5, 11.75], [4.25, 11.85], [4.0, 11.75], [3.75, 11.85], [3.68, 11.82], [3.53, 11.47], [3.0, 11.25], [2.75, 11.35], [2.5, 11.25], [1.97, 11.47], [1.82, 11.82], [1.5, 11.96], [1.0, 11.75], [0.47, 11.97], [0.32, 12.32], [0.25, 12.35], [0.0, 12.25], [-0.25, 12.35], [-0.5, 12.25], [-1.03, 12.47], [-1.25, 13.0], [-1.03, 13.53], [-0.68, 13.68], [-0.53, 14.03], [0.0, 14.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.139635459047099}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.1835689493922854}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.616619516944525, 29.428768806054165, 29.334501876976276, 29.508904278495436]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.221889373309125, 30.391097901181695, 30.635464173231014, 30.294542245449293]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.8823723035888582, 2.2260598084092473, 2.1708911097470858, 2.2598016809600154]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.1232809525680523, 3.0070287152738047, 2.5087765715992987, 3.139635459047099]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.568459854260434, 1.8026490109447921, 1.7851927081557104, 1.8800491206713241]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8047063915196053, 2.423576620769984, 2.0871180643591494, 2.7322930259974263]}}