{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:45.802189", "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": "2025-Jul-24_to_2025-Aug-01_14.5_-12.0"}, "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": 2025070002716}, "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": "July 24 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 01 2025"}, "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": 66554.5760431984}, "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": ["Angola"]}, "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": -12.0}, "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": 14.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "14.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.5}, "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": -9.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[16.03, -12.47], [16.25, -13.0], [16.03, -13.53], [15.5, -13.75], [15.25, -13.65], [15.0, -13.75], [14.75, -13.65], [14.68, -13.68], [14.53, -14.03], [14.0, -14.25], [13.75, -14.15], [13.68, -14.18], [13.53, -14.53], [13.0, -14.75], [12.47, -14.53], [12.25, -14.0], [12.35, -13.75], [12.25, -13.5], [12.47, -12.97], [12.82, -12.82], [12.97, -12.47], [13.32, -12.32], [13.47, -11.97], [13.82, -11.82], [13.85, -11.75], [13.75, -11.5], [13.85, -11.25], [13.75, -11.0], [13.85, -10.75], [13.75, -10.5], [13.97, -9.97], [14.32, -9.82], [14.35, -9.75], [14.25, -9.5], [14.35, -9.25], [14.25, -9.0], [14.47, -8.47], [15.0, -8.25], [15.53, -8.47], [15.68, -8.82], [16.03, -8.97], [16.25, -9.5], [16.15, -9.75], [16.25, -10.0], [16.15, -10.25], [16.25, -10.5], [16.03, -11.03], [15.5, -11.25], [15.25, -11.15], [15.18, -11.18], [15.15, -11.25], [15.25, -11.5], [15.15, -11.75], [15.25, -12.0], [15.15, -12.25], [15.18, -12.32], [15.25, -12.35], [15.5, -12.25], [16.03, -12.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.47, -12.47], [15.0, -12.25], [15.53, -12.47], [15.75, -13.0], [15.53, -13.53], [15.0, -13.75], [14.47, -13.53], [14.25, -13.0], [14.47, -12.47]]]]}, "2025-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.0, -13.75], [14.47, -13.53], [14.25, -13.0], [14.47, -12.47], [15.0, -12.25], [15.25, -12.35], [15.5, -12.25], [16.03, -12.47], [16.25, -13.0], [16.03, -13.53], [15.5, -13.75], [15.25, -13.65], [15.0, -13.75]]]]}, "2025-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.75, -12.0], [13.97, -11.47], [14.5, -11.25], [15.03, -11.47], [15.25, -12.0], [15.13, -12.3], [15.25, -12.35], [15.5, -12.25], [16.03, -12.47], [16.25, -13.0], [16.03, -13.53], [15.5, -13.75], [15.25, -13.65], [15.0, -13.75], [14.75, -13.65], [14.5, -13.75], [13.97, -13.53], [13.75, -13.0], [13.96, -12.5], [13.75, -12.0]]]]}, "2025-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.25, -13.0], [13.47, -12.47], [13.82, -12.32], [13.85, -12.25], [13.75, -12.0], [13.85, -11.75], [13.75, -11.5], [13.85, -11.25], [13.75, -11.0], [13.97, -10.47], [14.32, -10.32], [14.47, -9.97], [14.82, -9.82], [14.97, -9.47], [15.5, -9.25], [16.03, -9.47], [16.25, -10.0], [16.03, -10.53], [15.68, -10.68], [15.53, -11.03], [15.18, -11.18], [15.15, -11.25], [15.25, -11.5], [15.15, -11.75], [15.25, -12.0], [15.15, -12.25], [15.18, -12.32], [15.25, -12.35], [15.5, -12.25], [16.03, -12.47], [16.25, -13.0], [16.03, -13.53], [15.5, -13.75], [15.25, -13.65], [15.0, -13.75], [14.75, -13.65], [14.68, -13.68], [14.53, -14.03], [14.0, -14.25], [13.47, -14.03], [13.25, -13.5], [13.35, -13.25], [13.25, -13.0]]]]}, "2025-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.25, -13.0], [13.47, -12.47], [13.82, -12.32], [13.85, -12.25], [13.75, -12.0], [13.85, -11.75], [13.75, -11.5], [13.85, -11.25], [13.75, -11.0], [13.97, -10.47], [14.32, -10.32], [14.47, -9.97], [14.82, -9.82], [14.97, -9.47], [15.5, -9.25], [16.03, -9.47], [16.25, -10.0], [16.15, -10.25], [16.25, -10.5], [16.03, -11.03], [15.5, -11.25], [15.25, -11.15], [15.18, -11.18], [15.15, -11.25], [15.25, -11.5], [15.15, -11.75], [15.25, -12.0], [15.15, -12.25], [15.25, -12.5], [15.15, -12.75], [15.25, -13.0], [15.03, -13.53], [14.68, -13.68], [14.53, -14.03], [14.0, -14.25], [13.47, -14.03], [13.25, -13.5], [13.35, -13.25], [13.25, -13.0]]]]}, "2025-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.35, -12.75], [13.25, -12.5], [13.47, -11.97], [13.82, -11.82], [13.85, -11.75], [13.75, -11.5], [13.85, -11.25], [13.75, -11.0], [13.85, -10.75], [13.75, -10.5], [13.97, -9.97], [14.32, -9.82], [14.47, -9.47], [15.0, -9.25], [15.25, -9.35], [15.5, -9.25], [16.03, -9.47], [16.25, -10.0], [16.15, -10.25], [16.25, -10.5], [16.03, -11.03], [15.5, -11.25], [15.25, -11.15], [15.18, -11.18], [15.15, -11.25], [15.25, -11.5], [15.15, -11.75], [15.25, -12.0], [15.15, -12.25], [15.25, -12.5], [15.03, -13.03], [14.68, -13.18], [14.65, -13.25], [14.75, -13.5], [14.53, -14.03], [14.0, -14.25], [13.75, -14.15], [13.5, -14.25], [12.97, -14.03], [12.75, -13.5], [12.97, -12.97], [13.32, -12.82], [13.35, -12.75]]]]}, "2025-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.25, -13.5], [12.47, -12.97], [12.82, -12.82], [12.97, -12.47], [13.32, -12.32], [13.47, -11.97], [13.82, -11.82], [13.85, -11.75], [13.75, -11.5], [13.85, -11.25], [13.75, -11.0], [13.85, -10.75], [13.75, -10.5], [13.97, -9.97], [14.32, -9.82], [14.35, -9.75], [14.25, -9.5], [14.35, -9.25], [14.25, -9.0], [14.47, -8.47], [15.0, -8.25], [15.53, -8.47], [15.68, -8.82], [16.03, -8.97], [16.25, -9.5], [16.15, -9.75], [16.25, -10.0], [16.15, -10.25], [16.25, -10.5], [16.03, -11.03], [15.5, -11.25], [15.25, -11.15], [15.18, -11.18], [15.15, -11.25], [15.25, -11.5], [15.15, -11.75], [15.25, -12.0], [15.15, -12.25], [15.25, -12.5], [15.03, -13.03], [14.68, -13.18], [14.65, -13.25], [14.75, -13.5], [14.53, -14.03], [14.0, -14.25], [13.75, -14.15], [13.68, -14.18], [13.53, -14.53], [13.0, -14.75], [12.47, -14.53], [12.25, -14.0], [12.35, -13.75], [12.25, -13.5]]]]}, "2025-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.25, -13.5], [12.47, -12.97], [12.82, -12.82], [12.97, -12.47], [13.32, -12.32], [13.47, -11.97], [13.82, -11.82], [13.85, -11.75], [13.75, -11.5], [13.85, -11.25], [13.75, -11.0], [13.85, -10.75], [13.75, -10.5], [13.97, -9.97], [14.32, -9.82], [14.35, -9.75], [14.25, -9.5], [14.35, -9.25], [14.25, -9.0], [14.47, -8.47], [15.0, -8.25], [15.53, -8.47], [15.68, -8.82], [16.03, -8.97], [16.25, -9.5], [16.15, -9.75], [16.25, -10.0], [16.03, -10.53], [15.68, -10.68], [15.53, -11.03], [15.18, -11.18], [15.15, -11.25], [15.25, -11.5], [15.15, -11.75], [15.25, -12.0], [15.15, -12.25], [15.25, -12.5], [15.03, -13.03], [14.68, -13.18], [14.65, -13.25], [14.75, -13.5], [14.53, -14.03], [14.0, -14.25], [13.75, -14.15], [13.68, -14.18], [13.53, -14.53], [13.0, -14.75], [12.47, -14.53], [12.25, -14.0], [12.35, -13.75], [12.25, -13.5]]]]}, "2025-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.25, -13.5], [12.47, -12.97], [12.82, -12.82], [12.97, -12.47], [13.32, -12.32], [13.47, -11.97], [13.82, -11.82], [13.85, -11.75], [13.75, -11.5], [13.85, -11.25], [13.75, -11.0], [13.85, -10.75], [13.75, -10.5], [13.97, -9.97], [14.32, -9.82], [14.35, -9.75], [14.25, -9.5], [14.35, -9.25], [14.25, -9.0], [14.47, -8.47], [15.0, -8.25], [15.53, -8.47], [15.68, -8.82], [16.03, -8.97], [16.25, -9.5], [16.15, -9.75], [16.25, -10.0], [16.03, -10.53], [15.68, -10.68], [15.53, -11.03], [15.18, -11.18], [15.15, -11.25], [15.25, -11.5], [15.15, -11.75], [15.25, -12.0], [15.15, -12.25], [15.25, -12.5], [15.03, -13.03], [14.68, -13.18], [14.53, -13.53], [14.18, -13.68], [14.03, -14.03], [13.68, -14.18], [13.53, -14.53], [13.0, -14.75], [12.47, -14.53], [12.25, -14.0], [12.35, -13.75], [12.25, -13.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.8542473058359974}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.7817132864355443}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.25261586507162, 19.3840372721354, 20.652165985107445, 21.137736141320488, 21.21619466145836, 21.298746607853843, 21.89148730897074, 21.95794307567462, 21.52911439783435]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.25261586507162, 19.599287923177087, 21.59548467000326, 22.40095672607424, 22.379744466145837, 23.299128468831384, 24.035414632161462, 24.269353485107445, 23.339891052246116]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.241536420171883, 1.6665763738501767, 1.6671978823983409, 1.7137343914879415, 1.3648935418196289, 1.6189826139648262, 1.9721946962857917, 2.0790525397798945, 1.7398734624903862]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.241536420171883, 1.8256341040959114, 2.1822929856088535, 2.5227947925165495, 1.9704311402304029, 2.330051259549691, 2.52141868290272, 3.8542473058359974, 2.7393652913086726]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2534437651470718, 1.5561078060249822, 1.763855156305582, 2.0535488406260725, 1.7189493281014776, 1.96974809866401, 2.26984462138393, 2.3809545495042883, 1.9861153687336264]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2534437651470718, 1.567630167122559, 2.2745788466755013, 3.2778975538514175, 2.4634866579320103, 2.9015665460473437, 3.0539384224042396, 3.2288712939360926, 2.8762007086861545]}}