{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:04.003187", "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-17_to_2023-Jun-20_7.0_19.0"}, "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": 2023060002288}, "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 17 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 20 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": 96113.13521368611}, "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": ["Algeria", "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": 19.0}, "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": 7.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "7.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 3.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 8.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.0}, "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": [[[[4.0, 19.25], [4.25, 19.15], [4.32, 19.18], [4.35, 19.25], [4.25, 19.5], [4.35, 19.75], [4.25, 20.0], [4.47, 20.53], [4.82, 20.68], [4.97, 21.03], [5.32, 21.18], [5.47, 21.53], [6.0, 21.75], [6.25, 21.65], [6.5, 21.75], [6.75, 21.65], [7.0, 21.75], [7.25, 21.65], [7.5, 21.75], [8.03, 21.53], [8.18, 21.18], [8.53, 21.03], [8.75, 20.5], [8.53, 19.97], [8.18, 19.82], [8.03, 19.47], [7.68, 19.32], [7.65, 19.25], [7.75, 19.0], [7.53, 18.47], [7.0, 18.25], [6.75, 18.35], [6.5, 18.25], [6.25, 18.35], [6.0, 18.25], [5.7, 18.38], [5.65, 18.25], [5.75, 18.0], [5.53, 17.47], [5.0, 17.25], [4.75, 17.35], [4.5, 17.25], [4.25, 17.35], [4.0, 17.25], [3.75, 17.35], [3.5, 17.25], [3.25, 17.35], [3.0, 17.25], [2.47, 17.47], [2.25, 18.0], [2.47, 18.53], [2.82, 18.68], [2.97, 19.03], [3.5, 19.25], [3.75, 19.15], [4.0, 19.25]]]]}}, "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": {"2023-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.97, 21.53], [6.5, 21.75], [7.03, 21.53], [7.25, 21.0], [7.03, 20.47], [6.5, 20.25], [5.97, 20.47], [5.75, 21.0], [5.97, 21.53]]]]}, "2023-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.97, 19.03], [3.5, 19.25], [3.75, 19.15], [4.0, 19.25], [4.25, 19.15], [4.32, 19.18], [4.35, 19.25], [4.25, 19.5], [4.35, 19.75], [4.25, 20.0], [4.47, 20.53], [4.82, 20.68], [4.97, 21.03], [5.32, 21.18], [5.47, 21.53], [6.0, 21.75], [6.25, 21.65], [6.5, 21.75], [6.75, 21.65], [7.0, 21.75], [7.25, 21.65], [7.5, 21.75], [8.03, 21.53], [8.18, 21.18], [8.53, 21.03], [8.75, 20.5], [8.53, 19.97], [8.18, 19.82], [8.03, 19.47], [7.68, 19.32], [7.65, 19.25], [7.75, 19.0], [7.53, 18.47], [7.0, 18.25], [6.75, 18.35], [6.5, 18.25], [6.25, 18.35], [6.0, 18.25], [5.7, 18.38], [5.65, 18.25], [5.75, 18.0], [5.53, 17.47], [5.0, 17.25], [4.75, 17.35], [4.5, 17.25], [4.25, 17.35], [4.0, 17.25], [3.75, 17.35], [3.5, 17.25], [3.25, 17.35], [3.0, 17.25], [2.47, 17.47], [2.25, 18.0], [2.47, 18.53], [2.82, 18.68], [2.97, 19.03]]]]}, "2023-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.97, 19.03], [3.5, 19.25], [3.75, 19.15], [4.0, 19.25], [4.25, 19.15], [4.32, 19.18], [4.35, 19.25], [4.25, 19.5], [4.35, 19.75], [4.25, 20.0], [4.47, 20.53], [4.82, 20.68], [4.97, 21.03], [5.32, 21.18], [5.47, 21.53], [6.0, 21.75], [6.25, 21.65], [6.5, 21.75], [6.75, 21.65], [7.0, 21.75], [7.25, 21.65], [7.5, 21.75], [8.03, 21.53], [8.18, 21.18], [8.53, 21.03], [8.75, 20.5], [8.53, 19.97], [8.18, 19.82], [8.03, 19.47], [7.68, 19.32], [7.65, 19.25], [7.75, 19.0], [7.53, 18.47], [7.0, 18.25], [6.75, 18.35], [6.5, 18.25], [6.25, 18.35], [6.0, 18.25], [5.7, 18.38], [5.65, 18.25], [5.75, 18.0], [5.53, 17.47], [5.0, 17.25], [4.75, 17.35], [4.5, 17.25], [4.25, 17.35], [4.0, 17.25], [3.75, 17.35], [3.5, 17.25], [3.25, 17.35], [3.0, 17.25], [2.47, 17.47], [2.25, 18.0], [2.47, 18.53], [2.82, 18.68], [2.97, 19.03]]]]}, "2023-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[2.97, 19.03], [3.5, 19.25], [3.75, 19.15], [4.0, 19.25], [4.25, 19.15], [4.32, 19.18], [4.35, 19.25], [4.25, 19.5], [4.35, 19.75], [4.25, 20.0], [4.47, 20.53], [4.82, 20.68], [4.97, 21.03], [5.32, 21.18], [5.47, 21.53], [6.0, 21.75], [6.25, 21.65], [6.5, 21.75], [6.75, 21.65], [7.0, 21.75], [7.25, 21.65], [7.5, 21.75], [8.03, 21.53], [8.18, 21.18], [8.53, 21.03], [8.75, 20.5], [8.53, 19.97], [8.18, 19.82], [8.03, 19.47], [7.68, 19.32], [7.65, 19.25], [7.75, 19.0], [7.53, 18.47], [7.0, 18.25], [6.75, 18.35], [6.5, 18.25], [6.25, 18.35], [6.0, 18.25], [5.7, 18.38], [5.65, 18.25], [5.75, 18.0], [5.53, 17.47], [5.0, 17.25], [4.75, 17.35], [4.5, 17.25], [4.25, 17.35], [4.0, 17.25], [3.75, 17.35], [3.5, 17.25], [3.25, 17.35], [3.0, 17.25], [2.47, 17.47], [2.25, 18.0], [2.47, 18.53], [2.82, 18.68], [2.97, 19.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.605585845224141}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.3280402563901736}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [37.34927386309391, 38.13511791101263, 38.36888431958221, 37.360524480117704]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [37.34927386309391, 38.918790830806245, 39.67846458719356, 38.25191417080731]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.8630393608435725, 2.3916565349227468, 2.7590639262397034, 1.8474912442367557]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.8630393608435725, 2.95426616490289, 3.605585845224141, 2.437500505872549]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3240019479713963, 1.9693131941541433, 2.2892545837132423, 1.480093281919094]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3240019479713963, 2.5114064844745223, 3.0888411007745105, 1.8930293892353005]}}