{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:12.977997", "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-24_to_2018-Sep-27_355.5_18.0"}, "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": 2018090002682}, "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 24 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 27 2018"}, "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": 108939.46158156838}, "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": ["Mali", "Mauritania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 18.0}, "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": 355.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "355.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 351.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 357.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.0, 19.25], [-3.47, 19.03], [-3.25, 18.5], [-3.35, 18.25], [-3.25, 18.0], [-3.47, 17.47], [-4.0, 17.25], [-4.25, 17.35], [-4.5, 17.25], [-5.03, 17.47], [-5.25, 18.0], [-5.03, 18.53], [-4.68, 18.68], [-4.53, 19.03], [-4.0, 19.25]]]]}, "2018-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.25, 17.0], [-9.03, 17.53], [-8.68, 17.68], [-8.53, 18.03], [-8.12, 18.2], [-8.18, 18.32], [-8.53, 18.47], [-8.75, 19.0], [-8.53, 19.53], [-8.0, 19.75], [-7.47, 19.53], [-7.32, 19.18], [-6.97, 19.03], [-6.82, 18.68], [-6.75, 18.65], [-6.5, 18.75], [-6.25, 18.65], [-6.0, 18.75], [-5.75, 18.65], [-5.68, 18.68], [-5.65, 18.75], [-5.75, 19.0], [-5.53, 19.53], [-5.0, 19.75], [-4.75, 19.65], [-4.5, 19.75], [-4.25, 19.65], [-4.18, 19.68], [-4.03, 20.03], [-3.5, 20.25], [-2.97, 20.03], [-2.82, 19.68], [-2.47, 19.53], [-2.25, 19.0], [-2.47, 18.47], [-3.0, 18.25], [-3.25, 18.35], [-3.32, 18.32], [-3.35, 18.25], [-3.25, 18.0], [-3.47, 17.47], [-4.0, 17.25], [-4.25, 17.35], [-4.5, 17.25], [-4.75, 17.35], [-4.82, 17.32], [-4.97, 16.97], [-5.32, 16.82], [-5.35, 16.75], [-5.25, 16.5], [-5.47, 15.97], [-6.0, 15.75], [-6.25, 15.85], [-6.5, 15.75], [-6.75, 15.85], [-6.82, 15.82], [-6.97, 15.47], [-7.5, 15.25], [-7.75, 15.35], [-8.0, 15.25], [-8.53, 15.47], [-8.75, 16.0], [-8.65, 16.25], [-8.68, 16.32], [-9.03, 16.47], [-9.25, 17.0]]]]}, "2018-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.25, 17.0], [-9.03, 17.53], [-8.68, 17.68], [-8.53, 18.03], [-8.12, 18.2], [-8.18, 18.32], [-8.53, 18.47], [-8.75, 19.0], [-8.53, 19.53], [-8.0, 19.75], [-7.47, 19.53], [-7.32, 19.18], [-6.97, 19.03], [-6.82, 18.68], [-6.75, 18.65], [-6.5, 18.75], [-6.25, 18.65], [-6.0, 18.75], [-5.75, 18.65], [-5.68, 18.68], [-5.65, 18.75], [-5.75, 19.0], [-5.53, 19.53], [-5.0, 19.75], [-4.75, 19.65], [-4.5, 19.75], [-4.25, 19.65], [-4.18, 19.68], [-4.03, 20.03], [-3.5, 20.25], [-2.97, 20.03], [-2.82, 19.68], [-2.47, 19.53], [-2.25, 19.0], [-2.47, 18.47], [-3.0, 18.25], [-3.25, 18.35], [-3.32, 18.32], [-3.35, 18.25], [-3.25, 18.0], [-3.47, 17.47], [-4.0, 17.25], [-4.25, 17.35], [-4.5, 17.25], [-4.75, 17.35], [-4.82, 17.32], [-4.97, 16.97], [-5.32, 16.82], [-5.35, 16.75], [-5.25, 16.5], [-5.47, 15.97], [-6.0, 15.75], [-6.25, 15.85], [-6.5, 15.75], [-6.75, 15.85], [-6.82, 15.82], [-6.97, 15.47], [-7.5, 15.25], [-7.75, 15.35], [-8.0, 15.25], [-8.53, 15.47], [-8.75, 16.0], [-8.65, 16.25], [-8.68, 16.32], [-9.03, 16.47], [-9.25, 17.0]]]]}, "2018-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.25, 17.0], [-9.03, 17.53], [-8.68, 17.68], [-8.53, 18.03], [-8.12, 18.2], [-8.18, 18.32], [-8.53, 18.47], [-8.75, 19.0], [-8.53, 19.53], [-8.0, 19.75], [-7.47, 19.53], [-7.32, 19.18], [-6.97, 19.03], [-6.82, 18.68], [-6.75, 18.65], [-6.5, 18.75], [-6.25, 18.65], [-6.0, 18.75], [-5.75, 18.65], [-5.68, 18.68], [-5.65, 18.75], [-5.75, 19.0], [-5.53, 19.53], [-5.0, 19.75], [-4.75, 19.65], [-4.5, 19.75], [-4.25, 19.65], [-4.18, 19.68], [-4.03, 20.03], [-3.5, 20.25], [-2.97, 20.03], [-2.82, 19.68], [-2.47, 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"Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [34.31072586363274, 35.3004224558652, 36.36751507213802, 35.643477293313595]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9082738507265162, 2.239295356095735, 2.802607331157342, 1.9438504409644868]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.9884970163763, 2.799491071113664, 3.619927796015645, 2.876997069924016]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1275358097164385, 1.3761474542137087, 1.8085629746372835, 1.2989025558555953]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.154882285833485, 1.8121617688537897, 2.250613687621607, 1.6878187352101426]}}