{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:44.728084", "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-Dec-15_to_2021-Dec-20_39.5_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": 2021120001994}, "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": "December 15 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 20 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 66268.27759950304}, "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": ["Eritrea", "Ethiopia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa", "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": 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": 39.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "39.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 15.5], [38.47, 16.03], [39.0, 16.25], [39.25, 16.15], [39.5, 16.25], [40.03, 16.03], [40.25, 15.5], [40.15, 15.25], [40.18, 15.18], [40.53, 15.03], [40.75, 14.5], [40.53, 13.97], [40.0, 13.75], [39.47, 13.97], [39.32, 14.32], [38.97, 14.47], [38.82, 14.82], [38.47, 14.97], [38.25, 15.5]]]]}, "2021-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.97, 10.97], [37.75, 11.5], [37.97, 12.03], [38.5, 12.25], [39.03, 12.03], [39.25, 11.5], [39.03, 10.97], [38.5, 10.75], [37.97, 10.97]]], [[[38.47, 16.03], [39.0, 16.25], [39.25, 16.15], [39.5, 16.25], [40.03, 16.03], [40.25, 15.5], [40.15, 15.25], [40.18, 15.18], [40.53, 15.03], [40.75, 14.5], [40.65, 14.25], [40.75, 14.0], [40.53, 13.47], [40.0, 13.25], [39.47, 13.47], [39.32, 13.82], [38.97, 13.97], [38.75, 14.5], [38.85, 14.75], [38.82, 14.82], [38.47, 14.97], [38.25, 15.5], [38.47, 16.03]]]]}, "2021-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, 11.5], [37.97, 12.03], [38.38, 12.2], [38.25, 12.5], [38.47, 13.03], [39.0, 13.25], [39.25, 13.15], [39.38, 13.2], [39.32, 13.32], [38.97, 13.47], [38.75, 14.0], [38.85, 14.25], [38.75, 14.5], [38.85, 14.75], [38.82, 14.82], [38.47, 14.97], [38.25, 15.5], [38.47, 16.03], [39.0, 16.25], [39.25, 16.15], [39.5, 16.25], [40.03, 16.03], [40.25, 15.5], [40.15, 15.25], [40.18, 15.18], [40.53, 15.03], [40.75, 14.5], [40.65, 14.25], [40.75, 14.0], [40.65, 13.75], [40.75, 13.5], [40.53, 12.97], [40.13, 12.8], [40.25, 12.5], [40.15, 12.25], [40.25, 12.0], [40.15, 11.75], [40.18, 11.68], [40.53, 11.53], [40.75, 11.0], [40.53, 10.47], [40.18, 10.32], [40.03, 9.97], [39.5, 9.75], [38.97, 9.97], [38.82, 10.32], [38.47, 10.47], [38.32, 10.82], [37.97, 10.97], [37.75, 11.5]]]]}, "2021-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, 11.5], [37.97, 12.03], [38.38, 12.2], [38.25, 12.5], [38.47, 13.03], [38.82, 13.18], [38.96, 13.5], [38.75, 14.0], [38.85, 14.25], [38.82, 14.32], [38.47, 14.47], [38.25, 15.0], [38.35, 15.25], [38.25, 15.5], [38.47, 16.03], [39.0, 16.25], [39.25, 16.15], [39.5, 16.25], [40.03, 16.03], [40.25, 15.5], [40.15, 15.25], [40.25, 15.0], [40.15, 14.75], [40.18, 14.68], [40.53, 14.53], [40.75, 14.0], [40.65, 13.75], [40.75, 13.5], [40.65, 13.25], [40.75, 13.0], [40.65, 12.75], [40.75, 12.5], [40.53, 11.97], [40.18, 11.82], [40.15, 11.75], [40.18, 11.68], [40.53, 11.53], [40.75, 11.0], [40.65, 10.75], [40.75, 10.5], [40.53, 9.97], [40.18, 9.82], [40.03, 9.47], [39.5, 9.25], [38.97, 9.47], [38.75, 10.0], [38.85, 10.25], [38.82, 10.32], [38.47, 10.47], [38.32, 10.82], [37.97, 10.97], [37.75, 11.5]]]]}, "2021-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, 11.5], [37.97, 12.03], [38.38, 12.2], [38.25, 12.5], [38.47, 13.03], [38.82, 13.18], [38.96, 13.5], [38.75, 14.0], [38.85, 14.25], [38.82, 14.32], [38.47, 14.47], [38.25, 15.0], [38.35, 15.25], [38.25, 15.5], [38.47, 16.03], [39.0, 16.25], [39.53, 16.03], [39.68, 15.68], [40.03, 15.53], [40.25, 15.0], [40.15, 14.75], [40.25, 14.5], [40.15, 14.25], [40.18, 14.18], [40.53, 14.03], [40.75, 13.5], [40.65, 13.25], [40.75, 13.0], [40.65, 12.75], [40.75, 12.5], [40.53, 11.97], [40.18, 11.82], [40.15, 11.75], [40.18, 11.68], [40.53, 11.53], [40.75, 11.0], [40.65, 10.75], [40.75, 10.5], [40.53, 9.97], [40.18, 9.82], [40.03, 9.47], [39.5, 9.25], [38.97, 9.47], [38.75, 10.0], [38.85, 10.25], [38.82, 10.32], [38.47, 10.47], [38.32, 10.82], [37.97, 10.97], [37.75, 11.5]]]]}, "2021-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.75, 11.5], [37.97, 12.03], [38.38, 12.2], [38.25, 12.5], [38.47, 13.03], [38.82, 13.18], [38.96, 13.5], [38.75, 14.0], [38.85, 14.25], [38.82, 14.32], [38.47, 14.47], [38.25, 15.0], [38.35, 15.25], [38.25, 15.5], [38.47, 16.03], [39.0, 16.25], [39.53, 16.03], [39.68, 15.68], [40.03, 15.53], [40.25, 15.0], [40.15, 14.75], [40.25, 14.5], [40.15, 14.25], [40.25, 14.0], [40.13, 13.7], [40.53, 13.53], [40.75, 13.0], [40.65, 12.75], [40.75, 12.5], [40.53, 11.97], [40.18, 11.82], [40.15, 11.75], [40.18, 11.68], [40.53, 11.53], [40.75, 11.0], [40.65, 10.75], [40.75, 10.5], [40.53, 9.97], [40.18, 9.82], [40.03, 9.47], [39.5, 9.25], [38.97, 9.47], [38.75, 10.0], [38.85, 10.25], [38.82, 10.32], [38.47, 10.47], [38.32, 10.82], [37.97, 10.97], [37.75, 11.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.5123967485514527}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.6035553395736963}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.072693046478605, 22.43640480188145, 19.422959658978925, 19.214939778124517, 18.578706350652283, 18.14774146227535]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.421622631405683, 28.52175701934135, 28.250031156661578, 25.487833512098177, 24.975015891942746, 24.671778736024578]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.743779480673524, 1.6248814649465626, 1.5074392596015613, 1.632648867625776, 1.662075628842322, 1.5538235758152092]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.3798999171566493, 2.5123967485514527, 2.321246831059568, 2.3561005013507383, 2.2364325383569508, 2.237410897576183]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7083017481020282, 1.6161577954298099, 1.4722805345424523, 1.6020451657625265, 1.6249215969966893, 1.535848863381555]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9732947253898978, 2.1328131816062084, 1.8315506174016103, 2.235379973025459, 2.188595328604953, 2.3548195867104815]}}