{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:52.276511", "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": "2021-Sep-17_to_2021-Sep-22_353.5_14.5"}, "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": 2021090002246}, "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 17 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 77626.59523427}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": 14.5}, "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": 353.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 350.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-6.5, 15.75], [-6.25, 15.65], [-6.0, 15.75], [-5.75, 15.65], [-5.5, 15.75], [-5.25, 15.65], [-5.0, 15.75], [-4.75, 15.65], [-4.5, 15.75], [-4.25, 15.65], [-4.0, 15.75], [-3.47, 15.53], [-3.25, 15.0], [-3.47, 14.47], [-4.0, 14.25], [-4.25, 14.35], [-4.5, 14.25], [-4.75, 14.35], [-5.0, 14.25], [-5.25, 14.35], [-5.32, 14.32], [-5.47, 13.97], [-6.0, 13.75], [-6.25, 13.85], [-6.5, 13.75], [-6.75, 13.85], [-7.0, 13.75], [-7.25, 13.85], [-7.5, 13.75], [-8.03, 13.97], [-8.18, 14.32], [-8.25, 14.35], [-8.32, 14.32], [-8.47, 13.97], [-8.82, 13.82], [-8.97, 13.47], [-9.5, 13.25], [-10.03, 13.47], [-10.18, 13.82], [-10.53, 13.97], [-10.75, 14.5], [-10.53, 15.03], [-10.18, 15.18], [-10.03, 15.53], [-9.68, 15.68], [-9.53, 16.03], [-9.18, 16.18], [-9.03, 16.53], [-8.5, 16.75], [-8.25, 16.65], [-8.0, 16.75], [-7.75, 16.65], [-7.5, 16.75], [-6.97, 16.53], [-6.75, 16.0], [-6.87, 15.7], [-6.75, 15.65], [-6.5, 15.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.529999999999973, 14.47], [-7.75, 15.0], [-7.529999999999973, 15.53], [-7.0, 15.75], [-6.75, 15.65], [-6.5, 15.75], [-5.970000000000027, 15.53], [-5.75, 15.0], [-5.850000000000023, 14.75], [-5.75, 14.5], [-5.970000000000027, 13.97], [-6.5, 13.75], [-7.029999999999973, 13.97], [-7.180000000000007, 14.32], [-7.529999999999973, 14.47]]]]}, "2021-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.75, 15.5], [-8.649999999999977, 15.75], [-8.75, 16.0], [-8.529999999999973, 16.53], [-8.0, 16.75], [-7.75, 16.65], [-7.5, 16.75], [-6.970000000000027, 16.53], [-6.75, 16.0], [-6.8700000000000045, 15.7], [-6.75, 15.65], [-6.5, 15.75], [-6.25, 15.65], [-6.0, 15.75], [-5.75, 15.65], [-5.5, 15.75], [-5.25, 15.65], [-5.0, 15.75], [-4.75, 15.65], [-4.5, 15.75], [-4.25, 15.65], [-4.0, 15.75], [-3.4700000000000273, 15.53], [-3.25, 15.0], 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