{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:13.567917", "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-24_to_2021-Aug-28_21.5_20.5"}, "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": 2021080002874}, "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 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 28 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 60994.38350108701}, "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": ["Chad", "Libya"]}, "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": 20.5}, "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": 21.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "21.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[23.53, 17.97], [23.0, 17.75], [22.47, 17.97], [22.25, 18.5], [22.35, 18.75], [22.32, 18.82], [22.25, 18.85], [22.0, 18.75], [21.75, 18.85], [21.5, 18.75], [20.97, 18.97], [20.82, 19.32], [20.47, 19.47], [20.25, 20.0], [20.47, 20.53], [20.82, 20.68], [20.97, 21.03], [21.32, 21.18], [21.47, 21.53], [22.0, 21.75], [22.25, 21.65], [22.5, 21.75], [23.03, 21.53], [23.18, 21.18], [23.25, 21.15], [23.5, 21.25], [23.75, 21.15], [24.0, 21.25], [24.53, 21.03], [24.75, 20.5], [24.53, 19.97], [24.18, 19.82], [24.15, 19.75], [24.25, 19.5], [24.03, 18.97], [23.68, 18.82], [23.65, 18.75], [23.75, 18.5], [23.53, 17.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 21.53], [22.0, 21.75], [22.25, 21.65], [22.5, 21.75], [23.03, 21.53], [23.25, 21.0], [23.15, 20.75], [23.25, 20.5], [23.03, 19.97], [22.5, 19.75], [22.25, 19.85], [22.0, 19.75], [21.75, 19.85], [21.5, 19.75], [20.97, 19.97], [20.75, 20.5], [20.97, 21.03], [21.32, 21.18], [21.47, 21.53]]]]}, "2021-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 19.47], [20.25, 20.0], [20.47, 20.53], [20.82, 20.68], [20.97, 21.03], [21.32, 21.18], [21.47, 21.53], [22.0, 21.75], [22.25, 21.65], [22.5, 21.75], [23.03, 21.53], [23.18, 21.18], [23.25, 21.15], [23.5, 21.25], [23.75, 21.15], [24.0, 21.25], [24.53, 21.03], [24.75, 20.5], [24.53, 19.97], [24.18, 19.82], [24.15, 19.75], [24.25, 19.5], [24.03, 18.97], [23.68, 18.82], [23.53, 18.47], [23.0, 18.25], [22.47, 18.47], [22.32, 18.82], [22.25, 18.85], [22.0, 18.75], [21.75, 18.85], [21.5, 18.75], [20.97, 18.97], [20.82, 19.32], [20.47, 19.47]]]]}, "2021-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 19.47], [20.25, 20.0], [20.47, 20.53], [20.82, 20.68], [20.97, 21.03], [21.32, 21.18], [21.47, 21.53], [22.0, 21.75], [22.25, 21.65], [22.5, 21.75], [23.03, 21.53], [23.18, 21.18], [23.25, 21.15], [23.5, 21.25], [23.75, 21.15], [24.0, 21.25], [24.53, 21.03], [24.75, 20.5], [24.53, 19.97], [24.18, 19.82], [24.15, 19.75], [24.25, 19.5], [24.03, 18.97], [23.68, 18.82], [23.65, 18.75], [23.75, 18.5], [23.53, 17.97], [23.0, 17.75], [22.47, 17.97], [22.25, 18.5], [22.35, 18.75], [22.32, 18.82], [22.25, 18.85], [22.0, 18.75], [21.75, 18.85], [21.5, 18.75], [20.97, 18.97], [20.82, 19.32], [20.47, 19.47]]]]}, "2021-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 19.47], [20.25, 20.0], [20.47, 20.53], [20.82, 20.68], [20.97, 21.03], [21.5, 21.25], [21.75, 21.15], [22.0, 21.25], [22.25, 21.15], [22.5, 21.25], [22.75, 21.15], [23.0, 21.25], [23.25, 21.15], [23.5, 21.25], [23.75, 21.15], [24.0, 21.25], [24.53, 21.03], [24.75, 20.5], [24.53, 19.97], [24.18, 19.82], [24.15, 19.75], [24.25, 19.5], [24.03, 18.97], [23.68, 18.82], [23.65, 18.75], [23.75, 18.5], [23.53, 17.97], [23.0, 17.75], [22.47, 17.97], [22.25, 18.5], [22.35, 18.75], [22.32, 18.82], [22.25, 18.85], [22.0, 18.75], [21.75, 18.85], [21.5, 18.75], [20.97, 18.97], [20.82, 19.32], [20.47, 19.47]]]]}, "2021-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.47, 19.03], [23.0, 19.25], [23.53, 19.03], [23.75, 18.5], [23.53, 17.97], [23.0, 17.75], [22.47, 17.97], [22.25, 18.5], [22.47, 19.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.4956225806980115}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9953614798035735}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.491065016857135, 33.192370760933954, 33.51089373804439, 33.35567031006224, 32.96714105986047]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [33.721786759409895, 33.914908217982145, 34.447552240838036, 34.297311106124425, 32.96714105986047]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.860779943360285, 1.846420816386211, 2.156015107797281, 2.0340052362102035, 1.5391248707734348]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.04571031426093, 2.2777625875697254, 2.4956225806980115, 2.4769628408086533, 1.5391248707734348]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3626652971481028, 1.3982754563507478, 1.6261615933661024, 1.5128002413080959, 1.252229165942744]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4062099206818481, 1.6929584686084838, 2.040956586944044, 1.9409977280357855, 1.252229165942744]}}