{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:28.539944", "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": "2026-Apr-22_to_2026-Apr-24_353.5_21.5"}, "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": 2026040002266}, "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": "April 22 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 24 2026"}, "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": 77019.26401090101}, "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", "Mauritania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 21.5}, "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": 353.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.0, 22.75], [-6.75, 22.65], [-6.68, 22.68], [-6.53, 23.03], [-6.18, 23.18], [-6.03, 23.53], [-5.5, 23.75], [-5.25, 23.65], [-5.18, 23.68], [-5.03, 24.03], [-4.68, 24.18], [-4.65, 24.25], [-4.75, 24.5], [-4.65, 24.75], [-4.75, 25.0], [-4.53, 25.53], [-4.0, 25.75], [-3.75, 25.65], [-3.5, 25.75], [-2.97, 25.53], [-2.75, 25.0], [-2.85, 24.75], [-2.75, 24.5], [-2.97, 23.97], [-3.32, 23.82], [-3.46, 23.5], [-3.25, 23.0], [-3.46, 22.5], [-3.25, 22.0], [-3.47, 21.47], [-4.0, 21.25], [-4.25, 21.35], [-4.5, 21.25], [-4.75, 21.35], [-4.82, 21.32], [-4.97, 20.97], [-5.32, 20.82], [-5.47, 20.47], [-6.0, 20.25], [-6.53, 20.47], [-6.68, 20.82], [-6.75, 20.85], [-7.0, 20.75], [-7.25, 20.85], [-7.5, 20.75], [-8.03, 20.97], [-8.25, 21.5], [-8.03, 22.03], [-7.68, 22.18], [-7.53, 22.53], [-7.0, 22.75]]]]}, "2026-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.0, 22.75], [-6.75, 22.65], [-6.68, 22.68], [-6.53, 23.03], [-6.18, 23.18], [-6.03, 23.53], [-5.5, 23.75], [-5.25, 23.65], [-5.18, 23.68], [-5.03, 24.03], [-4.68, 24.18], [-4.65, 24.25], [-4.75, 24.5], [-4.65, 24.75], [-4.75, 25.0], [-4.53, 25.53], [-4.0, 25.75], [-3.75, 25.65], [-3.5, 25.75], [-2.97, 25.53], [-2.75, 25.0], [-2.85, 24.75], [-2.75, 24.5], [-2.97, 23.97], [-3.32, 23.82], [-3.46, 23.5], [-3.25, 23.0], [-3.46, 22.5], [-3.25, 22.0], [-3.47, 21.47], [-4.0, 21.25], [-4.25, 21.35], [-4.5, 21.25], [-4.75, 21.35], [-4.82, 21.32], [-4.97, 20.97], [-5.32, 20.82], [-5.47, 20.47], [-6.0, 20.25], [-6.53, 20.47], [-6.68, 20.82], [-6.75, 20.85], [-7.0, 20.75], [-7.25, 20.85], [-7.5, 20.75], [-8.03, 20.97], [-8.25, 21.5], [-8.03, 22.03], [-7.68, 22.18], [-7.53, 22.53], [-7.0, 22.75]]]]}, "2026-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.0, 22.75], [-6.75, 22.65], [-6.68, 22.68], [-6.53, 23.03], [-6.18, 23.18], [-6.03, 23.53], [-5.5, 23.75], [-5.25, 23.65], [-5.18, 23.68], [-5.03, 24.03], [-4.68, 24.18], [-4.65, 24.25], [-4.75, 24.5], [-4.65, 24.75], [-4.75, 25.0], [-4.53, 25.53], [-4.0, 25.75], [-3.75, 25.65], [-3.5, 25.75], [-2.97, 25.53], [-2.75, 25.0], [-2.85, 24.75], [-2.75, 24.5], [-2.97, 23.97], [-3.32, 23.82], [-3.46, 23.5], [-3.25, 23.0], [-3.46, 22.5], [-3.25, 22.0], [-3.47, 21.47], [-4.0, 21.25], [-4.25, 21.35], [-4.5, 21.25], [-4.75, 21.35], [-4.82, 21.32], [-4.97, 20.97], [-5.32, 20.82], [-5.47, 20.47], [-6.0, 20.25], [-6.53, 20.47], [-6.68, 20.82], [-6.75, 20.85], [-7.0, 20.75], [-7.25, 20.85], [-7.5, 20.75], [-8.03, 20.97], [-8.25, 21.5], [-8.03, 22.03], [-7.68, 22.18], [-7.53, 22.53], [-7.0, 22.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.035656773884455}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.4934820656365355}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.06994838008177, 33.46689329736034, 33.382245871461464]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [34.24260101318362, 34.81683120727541, 34.67061513264974]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.415968380607732, 4.656747026585951, 4.407730789715924]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.889986261052627, 5.035656773884455, 4.956995171807932]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4693548576189868, 1.5631357079438646, 1.4832516426571802]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5824429459358544, 1.7604991912518355, 1.6950971176554948]}}