{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:36.747369", "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": "2022-Aug-18_to_2022-Aug-26_25.0_-3.5"}, "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": 2022080002452}, "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 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 26 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 188058.13923966806}, "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": ["Burundi", "Congo, The Democratic Republic of the", "Tanzania, United Republic of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "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": -3.5}, "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": 25.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 31.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[25.75, -2.5], [25.97, -1.97], [26.5, -1.75], [27.03, -1.97], [27.25, -2.5], [27.15, -2.75], [27.18, -2.82], [27.25, -2.85], [27.5, -2.75], [28.03, -2.97], [28.18, -3.32], [28.25, -3.35], [28.5, -3.25], [28.75, -3.35], [29.0, -3.25], [29.25, -3.35], [29.32, -3.32], [29.35, -3.25], [29.25, -3.0], [29.47, -2.47], [30.0, -2.25], [30.53, -2.47], [30.68, -2.82], [30.75, -2.85], [31.0, -2.75], [31.53, -2.97], [31.68, -3.32], [32.03, -3.47], [32.25, -4.0], [32.15, -4.25], [32.25, -4.5], [32.03, -5.03], [31.5, -5.25], [31.25, -5.15], [31.18, -5.18], [31.03, -5.53], [30.68, -5.68], [30.65, -5.75], [30.75, -6.0], [30.53, -6.53], [30.0, -6.75], [29.5, -6.54], [29.0, -6.75], [28.47, -6.53], [28.32, -6.18], [27.97, -6.03], [27.75, -5.5], [27.85, -5.25], [27.82, -5.18], [27.7, -5.13], [27.53, -5.53], [27.0, -5.75], [26.47, -5.53], [26.32, -5.18], [26.25, -5.15], [26.0, -5.25], [25.75, -5.15], [25.68, -5.18], [25.53, -5.53], [25.0, -5.75], [24.75, -5.65], [24.5, -5.75], [24.25, -5.65], [24.0, -5.75], [23.47, -5.53], [23.32, -5.18], [22.97, -5.03], [22.75, -4.5], [22.85, -4.25], [22.75, -4.0], [22.85, -3.75], [22.75, -3.5], [22.85, -3.25], [22.75, -3.0], [22.96, -2.5], [22.75, -2.0], [22.97, -1.47], [23.5, -1.25], [23.75, -1.35], [24.0, -1.25], [24.53, -1.47], [24.68, -1.82], [25.03, -1.97], [25.18, -2.32], [25.53, -2.47], [25.75, -3.0], [25.85, -2.75], [25.75, -2.5]], [[25.65, -3.25], [25.75, -3.5], [25.85, -3.25], [25.75, -3.0], [25.65, -3.25]], [[25.63, -3.8], [25.75, -3.85], [25.82, -3.82], [25.85, -3.75], [25.75, -3.5], [25.63, -3.8]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.97, -3.97], [24.5, -3.75], [25.03, -3.97], [25.25, -4.5], [25.03, -5.03], [24.5, -5.25], [23.97, -5.03], [23.75, -4.5], [23.97, -3.97]]]]}, "2022-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, -3.97], [28.32, -3.82], [28.47, -3.47], [29.0, -3.25], [29.25, -3.35], [29.32, -3.32], [29.35, -3.25], [29.25, -3.0], [29.47, -2.47], [30.0, -2.25], [30.53, -2.47], [30.68, -2.82], [30.75, -2.85], [31.0, -2.75], [31.53, -2.97], [31.68, -3.32], [32.03, -3.47], [32.25, -4.0], [32.15, -4.25], [32.25, -4.5], [32.03, -5.03], [31.5, -5.25], [31.25, -5.15], [31.0, -5.25], [30.75, -5.15], [30.63, -5.2], [30.75, -5.5], [30.53, -6.03], [30.0, -6.25], [29.5, -6.04], [29.0, -6.25], [28.47, -6.03], [28.32, -5.68], [27.97, -5.53], [27.75, -5.0], [27.85, -4.75], [27.75, -4.5], [27.97, -3.97]]], [[[22.75, -3.5], [22.85, -3.25], [22.75, -3.0], [22.96, -2.5], [22.75, -2.0], [22.97, -1.47], [23.5, -1.25], [23.75, -1.35], [24.0, -1.25], [24.53, -1.47], [24.68, -1.82], [25.03, -1.97], [25.18, -2.32], [25.53, -2.47], [25.75, -3.0], [25.65, -3.25], [25.75, -3.5], [25.57, -3.93], [26.0, -3.75], [26.53, -3.97], [26.75, -4.5], [26.53, -5.03], [26.0, -5.25], [25.7, -5.12], [25.53, -5.53], [25.0, -5.75], [24.75, -5.65], [24.5, -5.75], [24.25, -5.65], [24.0, -5.75], [23.47, -5.53], [23.32, -5.18], [22.97, -5.03], [22.75, -4.5], [22.85, -4.25], [22.75, -4.0], [22.85, -3.75], [22.75, -3.5]], [[25.3, -4.37], [25.43, -4.07], [25.13, -4.2], [25.18, -4.32], [25.3, -4.37]]], [[[25.97, -1.97], [26.5, -1.75], [27.03, -1.97], [27.25, -2.5], [27.15, -2.75], [27.25, -3.0], [27.03, -3.53], [26.5, -3.75], [25.97, -3.53], [25.75, -3.0], [25.85, -2.75], [25.75, -2.5], [25.97, -1.97]]]]}, "2022-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.97, -3.97], [28.32, -3.82], [28.47, -3.47], [29.0, -3.25], [29.25, -3.35], [29.32, -3.32], [29.35, -3.25], [29.25, -3.0], [29.47, -2.47], [30.0, -2.25], [30.53, -2.47], [30.68, -2.82], [30.75, -2.85], [31.0, -2.75], [31.53, -2.97], [31.68, -3.32], [32.03, -3.47], [32.25, -4.0], [32.15, -4.25], [32.25, -4.5], [32.03, -5.03], [31.5, -5.25], [31.25, -5.15], [31.18, -5.18], [31.03, -5.53], [30.68, -5.68], [30.53, -6.03], [30.0, -6.25], [29.7, -6.12], [29.53, -6.53], [29.0, -6.75], [28.47, -6.53], [28.25, -6.0], [28.35, -5.75], [28.32, -5.68], [27.97, -5.53], [27.75, -5.0], [27.85, -4.75], [27.75, -4.5], [27.97, -3.97]]], [[[22.75, -3.5], [22.85, -3.25], [22.75, -3.0], [22.96, -2.5], [22.75, -2.0], [22.97, -1.47], [23.5, -1.25], [23.75, -1.35], [24.0, -1.25], [24.53, -1.47], [24.68, -1.82], [25.03, -1.97], [25.18, -2.32], [25.53, -2.47], [25.75, -3.0], [25.65, -3.25], [25.75, -3.5], [25.57, -3.93], [26.0, -3.75], [26.53, -3.97], [26.75, -4.5], [26.53, -5.03], [26.0, -5.25], [25.7, -5.12], [25.53, -5.53], [25.0, -5.75], [24.75, -5.65], [24.5, -5.75], [24.25, -5.65], [24.0, -5.75], [23.47, -5.53], [23.32, -5.18], [22.97, -5.03], [22.75, -4.5], [22.85, -4.25], [22.75, -4.0], [22.85, -3.75], [22.75, -3.5]], [[25.3, -4.37], [25.43, -4.07], [25.13, -4.2], [25.18, -4.32], [25.3, -4.37]]], [[[25.97, -1.97], [26.5, -1.75], [27.03, -1.97], [27.25, -2.5], [27.15, -2.75], [27.25, -3.0], [27.03, -3.53], [26.5, -3.75], [25.97, -3.53], [25.75, -3.0], [25.85, -2.75], [25.75, -2.5], [25.97, -1.97]]]]}, "2022-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.75, -4.0], [22.85, -3.75], [22.75, -3.5], [22.85, -3.25], [22.75, -3.0], [22.96, -2.5], [22.75, -2.0], [22.97, -1.47], [23.5, -1.25], [23.75, -1.35], [24.0, -1.25], [24.53, -1.47], [24.68, -1.82], [25.03, -1.97], [25.18, -2.32], [25.53, -2.47], [25.75, -3.0], [25.85, -2.75], [25.75, -2.5], [25.97, -1.97], [26.5, -1.75], [27.03, -1.97], [27.25, -2.5], [27.15, -2.75], [27.18, -2.82], [27.25, -2.85], [27.5, -2.75], [28.03, -2.97], [28.18, -3.32], [28.5, -3.46], [29.0, -3.25], [29.25, -3.35], [29.32, -3.32], [29.35, -3.25], [29.25, -3.0], [29.47, -2.47], [30.0, -2.25], [30.53, -2.47], [30.68, -2.82], [30.75, -2.85], [31.0, -2.75], [31.53, -2.97], [31.68, -3.32], [32.03, -3.47], [32.25, -4.0], [32.15, -4.25], [32.25, -4.5], [32.03, -5.03], [31.5, -5.25], [31.25, -5.15], [31.18, -5.18], [31.03, -5.53], [30.68, -5.68], [30.65, -5.75], [30.75, -6.0], [30.53, -6.53], [30.0, -6.75], [29.5, -6.54], [29.0, -6.75], [28.47, -6.53], [28.25, -6.0], [28.35, -5.75], [28.32, -5.68], [27.97, -5.53], [27.82, -5.18], [27.47, -5.03], [27.32, -4.68], [27.25, -4.65], [27.18, -4.68], [27.03, -5.03], [26.5, -5.25], [26.25, -5.15], [26.0, -5.25], [25.75, -5.15], [25.68, -5.18], [25.53, -5.53], [25.0, -5.75], [24.75, -5.65], [24.5, -5.75], [24.25, -5.65], [24.0, -5.75], [23.47, -5.53], [23.32, -5.18], [22.97, -5.03], [22.75, -4.5], [22.85, -4.25], [22.75, -4.0]], [[25.65, -3.25], [25.75, -3.5], [25.85, -3.25], [25.75, -3.0], [25.65, -3.25]], [[25.63, -3.8], [25.75, -3.85], [25.82, -3.82], [25.85, -3.75], [25.75, -3.5], [25.63, -3.8]]]]}, "2022-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.75, -3.0], [23.97, -2.47], [24.5, -2.25], [24.75, -2.35], [25.0, -2.25], [25.53, -2.47], [25.75, -3.0], [25.85, -2.75], [25.75, -2.5], [25.97, -1.97], [26.5, -1.75], [27.03, -1.97], [27.25, -2.5], [27.15, -2.75], [27.18, -2.82], [27.25, -2.85], [27.5, -2.75], [28.03, -2.97], [28.18, -3.32], [28.25, -3.35], [28.5, -3.25], [28.75, -3.35], [29.0, -3.25], [29.25, -3.35], [29.32, -3.32], [29.47, -2.97], [30.0, -2.75], [30.25, -2.85], [30.5, -2.75], [30.75, -2.85], [31.0, -2.75], [31.53, -2.97], [31.68, -3.32], [32.03, -3.47], [32.25, -4.0], [32.15, -4.25], [32.25, -4.5], [32.03, -5.03], [31.5, -5.25], [31.25, -5.15], [31.18, -5.18], [31.03, -5.53], [30.68, -5.68], [30.65, -5.75], [30.75, -6.0], [30.53, -6.53], [30.0, -6.75], [29.5, -6.54], [29.0, -6.75], [28.47, -6.53], [28.32, -6.18], [27.97, -6.03], [27.75, -5.5], [27.85, -5.25], [27.82, -5.18], [27.47, -5.03], [27.32, -4.68], [27.25, -4.65], [27.18, -4.68], [27.03, -5.03], [26.5, -5.25], [26.25, -5.15], [26.0, -5.25], [25.75, -5.15], [25.5, -5.25], [24.97, -5.03], [24.75, -4.5], [24.88, -4.2], [24.75, -4.15], [24.5, -4.25], [23.97, -4.03], [23.75, -3.5], [23.85, -3.25], [23.75, -3.0]], [[25.65, -3.25], [25.75, -3.5], [25.85, -3.25], [25.75, -3.0], [25.65, -3.25]], [[25.63, -3.8], [25.75, -3.85], [25.82, -3.82], [25.85, -3.75], [25.75, -3.5], [25.63, -3.8]]]]}, "2022-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.97, -3.53], [23.75, -3.0], [23.97, -2.47], [24.5, -2.25], [25.03, -2.47], [25.18, -2.82], [25.53, -2.97], [25.75, -3.5], [25.97, -2.97], [26.5, -2.75], [26.75, -2.85], [27.0, -2.75], [27.25, -2.85], [27.5, -2.75], [28.03, -2.97], [28.18, -3.32], [28.25, -3.35], [28.5, -3.25], [28.75, -3.35], [29.0, -3.25], [29.3, -3.37], [29.47, -2.97], [30.0, -2.75], [30.25, -2.85], [30.5, -2.75], [30.75, -2.85], [31.0, -2.75], [31.53, -2.97], [31.75, -3.5], [31.65, -3.75], [31.75, -4.0], [31.53, -4.53], [31.18, -4.68], [31.03, -5.03], [30.68, -5.18], [30.54, -5.5], [30.75, -6.0], [30.53, -6.53], [30.0, -6.75], [29.5, -6.54], [29.0, -6.75], [28.47, -6.53], [28.32, -6.18], [27.97, -6.03], [27.75, -5.5], [27.85, -5.25], [27.82, -5.18], [27.47, -5.03], [27.32, -4.68], [27.25, -4.65], [27.18, -4.68], [27.03, -5.03], [26.5, -5.25], [26.25, -5.15], [26.0, -5.25], [25.75, -5.15], [25.5, -5.25], [24.97, -5.03], [24.75, -4.5], [24.88, -4.2], [24.47, -4.03], [24.32, -3.68], [23.97, -3.53]], [[25.63, -3.8], [25.75, -3.85], [25.82, -3.82], [25.85, -3.75], [25.75, -3.5], [25.63, -3.8]], [[29.35, -4.75], [29.3, -4.62], [29.18, -4.68], [29.15, -4.75], [29.18, -4.82], [29.3, -4.87], [29.35, -4.75]]]]}, "2022-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.97, -3.53], [23.75, -3.0], [23.97, -2.47], [24.5, -2.25], [25.03, -2.47], [25.18, -2.82], [25.53, -2.97], [25.75, -3.5], [25.97, -2.97], [26.5, -2.75], [26.75, -2.85], [27.0, -2.75], [27.25, -2.85], [27.5, -2.75], [28.03, -2.97], [28.18, -3.32], [28.25, -3.35], [28.5, -3.25], [29.03, -3.47], [29.25, -4.0], [29.15, -4.25], [29.25, -4.5], [29.15, -4.75], [29.18, -4.82], [29.53, -4.97], [29.75, -5.5], [29.53, -6.03], [29.0, -6.25], [28.75, -6.15], [28.5, -6.25], [27.97, -6.03], [27.75, -5.5], [27.85, -5.25], [27.82, -5.18], [27.7, -5.12], [27.53, -5.53], [27.0, -5.75], [26.47, -5.53], [26.32, -5.18], [26.25, -5.15], [26.0, -5.25], [25.75, -5.15], [25.5, -5.25], [24.97, -5.03], [24.75, -4.5], [24.88, -4.2], [24.47, -4.03], [24.32, -3.68], [23.97, -3.53]], [[25.63, -3.8], [25.75, -3.85], [25.82, -3.82], [25.85, -3.75], [25.75, -3.5], [25.63, -3.8]]]]}, "2022-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.97, -3.53], [23.75, -3.0], [23.97, -2.47], [24.5, -2.25], [25.03, -2.47], [25.18, -2.82], [25.53, -2.97], [25.75, -3.5], [25.97, -2.97], [26.5, -2.75], [26.75, -2.85], [27.0, -2.75], [27.53, -2.97], [27.68, -3.32], [27.75, -3.35], [28.0, -3.25], [28.53, -3.47], [28.75, -4.0], [28.65, -4.25], [28.75, -4.5], [28.53, -5.03], [28.0, -5.25], [27.7, -5.12], [27.53, -5.53], [27.0, -5.75], [26.47, -5.53], [26.32, -5.18], [26.25, -5.15], [26.0, -5.25], [25.75, -5.15], [25.5, -5.25], [24.97, -5.03], [24.75, -4.5], [24.88, -4.2], [24.47, -4.03], [24.32, -3.68], [23.97, -3.53]], [[25.63, -3.8], [25.75, -3.85], [25.82, -3.82], [25.85, -3.75], [25.75, -3.5], [25.63, -3.8]]]]}, "2022-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[27.47, -3.97], [28.0, -3.75], [28.53, -3.97], [28.75, -4.5], [28.53, -5.03], [28.0, -5.25], [27.7, -5.12], [27.53, -5.53], [27.0, -5.75], [26.47, -5.53], [26.25, -5.0], [26.47, -4.47], [27.0, -4.25], [27.3, -4.37], [27.47, -3.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.194357003247092}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.106300975920197}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.14361709974952, 26.047615939797026, 25.64877162710394, 26.43635722892924, 25.475947905265684, 25.196451223197982, 26.76454811640741, 26.95866205679107, 27.22638836654403]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.14361709974952, 28.889619162287374, 28.089204733618374, 29.66265187082672, 28.785518537282258, 27.85871409557552, 28.908736277865785, 28.282963795877492, 27.593161498829943]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6034127208924929, 2.274254341970884, 1.866807226744822, 2.500231576441081, 1.8929833760084862, 1.5624006879605967, 2.488709389396849, 2.1337213445954717, 1.6939483339570245]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.6034127208924929, 3.693396852872013, 2.4996820450274413, 4.194357003247092, 3.0556801176879276, 2.097685048596759, 3.962144990337947, 2.928901527051096, 1.7379757540717833]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1867648831484776, 2.0806387171207787, 1.849893042142933, 2.29856057930496, 1.8853984296926765, 1.528344934054355, 2.1931326176473496, 1.8335193562358851, 1.4265153892275282]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1867648831484776, 2.7368179249531472, 2.9475808719185443, 3.440763607780303, 2.425479266953641, 1.9233001314322549, 3.725925085210054, 2.592781654996494, 1.5325725501674807]}}