{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:03.597555", "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": "2023-Jun-16_to_2023-Jun-19_4.5_9.0"}, "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": 2023060002223}, "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": "June 16 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 103531.9932570539}, "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": ["Benin", "Nigeria", "Togo"]}, "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": 9.0}, "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": 4.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "4.5\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": 5.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[5.15, 9.25], [5.18, 9.18], [5.53, 9.03], [5.75, 8.5], [5.53, 7.97], [5.0, 7.75], [4.75, 7.85], [4.68, 7.82], [4.53, 7.47], [4.0, 7.25], [3.47, 7.47], [3.32, 7.82], [2.97, 7.97], [2.82, 8.32], [2.75, 8.35], [2.5, 8.25], [1.97, 8.47], [1.8, 8.88], [1.5, 8.75], [1.25, 8.85], [1.0, 8.75], [0.47, 8.97], [0.25, 9.5], [0.47, 10.03], [0.82, 10.18], [0.97, 10.53], [1.32, 10.68], [1.35, 10.75], [1.25, 11.0], [1.47, 11.53], [1.82, 11.68], [1.97, 12.03], [2.5, 12.25], [3.03, 12.03], [3.2, 11.63], [3.32, 11.68], [3.47, 12.03], [4.0, 12.25], [4.25, 12.15], [4.5, 12.25], [5.03, 12.03], [5.25, 11.5], [5.04, 11.0], [5.25, 10.5], [5.04, 10.0], [5.25, 9.5], [5.15, 9.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.75, 9.5], [1.97, 10.03], [2.5, 10.25], [2.75, 10.15], [3.0, 10.25], [3.25, 10.15], [3.32, 10.18], [3.47, 10.53], [4.0, 10.75], [4.53, 10.53], [4.68, 10.18], [5.03, 10.03], [5.25, 9.5], [5.15, 9.25], [5.18, 9.18], [5.53, 9.03], [5.75, 8.5], [5.53, 7.97], [5.0, 7.75], [4.75, 7.85], [4.68, 7.82], [4.53, 7.47], [4.0, 7.25], [3.47, 7.47], [3.32, 7.82], [2.97, 7.97], [2.82, 8.32], [2.75, 8.35], [2.5, 8.25], [1.97, 8.47], [1.75, 9.0], [1.85, 9.25], [1.75, 9.5]]]]}, "2023-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.97, 10.53], [1.32, 10.68], [1.35, 10.75], [1.25, 11.0], [1.47, 11.53], [1.82, 11.68], [1.97, 12.03], [2.5, 12.25], [3.03, 12.03], [3.2, 11.63], [3.32, 11.68], [3.47, 12.03], [4.0, 12.25], [4.25, 12.15], [4.5, 12.25], [5.03, 12.03], [5.25, 11.5], [5.04, 11.0], [5.25, 10.5], [5.04, 10.0], [5.25, 9.5], [5.15, 9.25], [5.18, 9.18], [5.53, 9.03], [5.75, 8.5], [5.53, 7.97], [5.0, 7.75], [4.75, 7.85], [4.68, 7.82], [4.53, 7.47], [4.0, 7.25], [3.47, 7.47], [3.32, 7.82], [2.97, 7.97], [2.82, 8.32], [2.75, 8.35], [2.5, 8.25], [1.97, 8.47], [1.8, 8.88], [1.5, 8.75], [1.25, 8.85], [1.0, 8.75], [0.47, 8.97], [0.25, 9.5], [0.47, 10.03], [0.82, 10.18], [0.97, 10.53]]]]}, "2023-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.97, 10.53], [1.32, 10.68], [1.35, 10.75], [1.25, 11.0], [1.47, 11.53], [1.82, 11.68], [1.97, 12.03], [2.5, 12.25], [3.03, 12.03], [3.2, 11.63], [3.32, 11.68], [3.47, 12.03], [4.0, 12.25], [4.25, 12.15], [4.5, 12.25], [5.03, 12.03], [5.25, 11.5], [5.04, 11.0], [5.25, 10.5], [5.04, 10.0], [5.25, 9.5], [5.15, 9.25], [5.18, 9.18], [5.53, 9.03], [5.75, 8.5], [5.53, 7.97], [5.0, 7.75], [4.75, 7.85], [4.68, 7.82], [4.53, 7.47], [4.0, 7.25], [3.47, 7.47], [3.32, 7.82], [2.97, 7.97], [2.82, 8.32], [2.75, 8.35], [2.5, 8.25], [1.97, 8.47], [1.8, 8.88], [1.5, 8.75], [1.25, 8.85], [1.0, 8.75], [0.47, 8.97], [0.25, 9.5], [0.47, 10.03], [0.82, 10.18], [0.97, 10.53]]]]}, "2023-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[0.97, 10.53], [1.32, 10.68], [1.35, 10.75], [1.25, 11.0], [1.47, 11.53], [1.82, 11.68], [1.97, 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"description": "The daily evolution of maximum t2m.", "value": [29.442092302734636, 31.83653610874694, 32.43045392087873, 31.991635142639836]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.4674736446863612, 2.277453244762318, 1.8483898568309, 1.7838253974675935]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.7879154035166493, 2.928391676129536, 2.6352228320578774, 2.800491517221417]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5792553534591773, 2.3189121082510025, 1.841290075652404, 1.6408926420267587]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8992185237277126, 3.1074431810907224, 2.5607630201440292, 2.4247238043785617]}}