{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:12.917732", "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-Aug-23_to_2021-Aug-25_359.5_15.0"}, "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": 2021080002813}, "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 23 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 25 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 68502.52735036078}, "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": ["Burkina Faso", "Mali", "Niger"]}, "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": 15.0}, "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": 0.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "359.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -1.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 1.5}, "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": 17.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-1.75, 15.5], [-1.65, 15.75], [-1.75, 16.0], [-1.65, 16.25], [-1.75, 16.5], [-1.53, 17.03], [-1.18, 17.18], [-1.03, 17.53], [-0.5, 17.75], [0.03, 17.53], [0.18, 17.18], [0.25, 17.15], [0.5, 17.25], [1.03, 17.03], [1.18, 16.68], [1.53, 16.53], [1.75, 16.0], [1.65, 15.75], [1.75, 15.5], [1.63, 15.2], [2.03, 15.03], [2.25, 14.5], [2.03, 13.97], [1.5, 13.75], [1.25, 13.85], [1.0, 13.75], [0.7, 13.88], [0.53, 13.47], [0.0, 13.25], [-0.53, 13.47], [-0.68, 13.82], [-0.75, 13.85], [-1.0, 13.75], [-1.53, 13.97], [-1.75, 14.5], [-1.65, 14.75], [-1.75, 15.0], [-1.65, 15.25], [-1.75, 15.5]]]]}}, "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": {"2021-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.75, 15.0], [-1.65, 15.25], [-1.75, 15.5], [-1.65, 15.75], [-1.75, 16.0], [-1.65, 16.25], [-1.75, 16.5], [-1.53, 17.03], [-1.18, 17.18], [-1.03, 17.53], [-0.5, 17.75], [0.03, 17.53], [0.18, 17.18], [0.25, 17.15], [0.5, 17.25], [1.03, 17.03], [1.18, 16.68], [1.53, 16.53], [1.75, 16.0], [1.65, 15.75], [1.75, 15.5], [1.63, 15.2], [2.03, 15.03], [2.25, 14.5], [2.03, 13.97], [1.5, 13.75], [1.25, 13.85], [1.0, 13.75], [0.7, 13.88], [0.53, 13.47], [0.0, 13.25], [-0.53, 13.47], [-0.68, 13.82], [-0.75, 13.85], [-1.0, 13.75], [-1.53, 13.97], [-1.75, 14.5], [-1.65, 14.75], [-1.75, 15.0]]]]}, "2021-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.75, 15.0], [-1.65, 15.25], [-1.75, 15.5], [-1.65, 15.75], [-1.75, 16.0], [-1.65, 16.25], [-1.75, 16.5], [-1.53, 17.03], [-1.18, 17.18], [-1.03, 17.53], [-0.5, 17.75], [0.03, 17.53], [0.18, 17.18], [0.25, 17.15], [0.5, 17.25], [1.03, 17.03], [1.18, 16.68], [1.53, 16.53], [1.75, 16.0], [1.65, 15.75], [1.75, 15.5], [1.63, 15.2], [2.03, 15.03], [2.25, 14.5], [2.03, 13.97], [1.5, 13.75], [1.25, 13.85], [1.0, 13.75], [0.7, 13.88], [0.53, 13.47], [0.0, 13.25], [-0.53, 13.47], [-0.68, 13.82], [-0.75, 13.85], [-1.0, 13.75], [-1.53, 13.97], [-1.75, 14.5], [-1.65, 14.75], [-1.75, 15.0]]]]}, "2021-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.75, 15.0], [-1.65, 15.25], [-1.75, 15.5], [-1.65, 15.75], [-1.75, 16.0], [-1.65, 16.25], [-1.75, 16.5], [-1.53, 17.03], [-1.18, 17.18], [-1.03, 17.53], [-0.5, 17.75], [0.03, 17.53], [0.18, 17.18], [0.25, 17.15], [0.5, 17.25], [1.03, 17.03], [1.18, 16.68], [1.53, 16.53], [1.75, 16.0], [1.65, 15.75], [1.75, 15.5], [1.63, 15.2], [2.03, 15.03], [2.25, 14.5], [2.03, 13.97], [1.5, 13.75], [1.25, 13.85], [1.0, 13.75], [0.7, 13.88], [0.53, 13.47], [0.0, 13.25], [-0.53, 13.47], [-0.68, 13.82], [-0.75, 13.85], [-1.0, 13.75], [-1.53, 13.97], [-1.75, 14.5], [-1.65, 14.75], [-1.75, 15.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.211878172873753}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.633138155745611}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [32.692452318575135, 35.40076610676334, 32.831320034056375]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [35.054836827425504, 37.132612520067994, 34.62403357373387]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.710403764166917, 5.386797490271168, 2.8022132127987476]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.533061001775934, 6.211878172873753, 3.2287736528780897]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3850620535234832, 2.8305654153946436, 1.4442716501662993]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4773132505466116, 3.3611989227620325, 1.7063518487741698]}}