{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:56.045580", "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": "2018-Jan-04_to_2018-Jan-07_25.5_27.5"}, "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": 2018010001468}, "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": "January 04 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 07 2018"}, "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": 124551.73392302488}, "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": ["Egypt", "Libya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "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": 27.5}, "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": 25.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, 28.25], [22.75, 28.5], [22.85, 28.75], [22.75, 29.0], [22.97, 29.53], [23.32, 29.68], [23.47, 30.03], [24.0, 30.25], [24.25, 30.15], [24.5, 30.25], [25.03, 30.03], [25.18, 29.68], [25.25, 29.65], [25.5, 29.75], [25.75, 29.65], [26.0, 29.75], [26.25, 29.65], [26.5, 29.75], [27.03, 29.53], [27.18, 29.18], [27.53, 29.03], [27.75, 28.5], [27.65, 28.25], [27.75, 28.0], [27.65, 27.75], [27.75, 27.5], [27.65, 27.25], [27.75, 27.0], [27.53, 26.47], [27.0, 26.25], [26.75, 26.35], [26.5, 26.25], [26.25, 26.35], [26.0, 26.25], [25.75, 26.35], [25.5, 26.25], [24.97, 26.47], [24.82, 26.82], [24.47, 26.97], [24.32, 27.32], [24.25, 27.35], [24.18, 27.32], [24.03, 26.97], [23.5, 26.75], [22.97, 26.97], [22.75, 27.5], [22.85, 27.75], [22.75, 28.0], [22.85, 28.25]]]]}, "2018-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, 28.25], [22.75, 28.5], [22.85, 28.75], [22.75, 29.0], [22.97, 29.53], [23.32, 29.68], [23.47, 30.03], [23.88, 30.2], [23.82, 30.32], [23.47, 30.47], [23.25, 31.0], [23.35, 31.25], [23.25, 31.5], [23.47, 32.03], [24.0, 32.25], [24.25, 32.15], [24.5, 32.25], [24.75, 32.15], [25.0, 32.25], [25.53, 32.03], [25.75, 31.5], [25.65, 31.25], [25.68, 31.18], [26.03, 31.03], [26.25, 30.5], [26.15, 30.25], [26.18, 30.18], [26.53, 30.03], [26.68, 29.68], [27.03, 29.53], [27.18, 29.18], [27.53, 29.03], [27.75, 28.5], [27.65, 28.25], [27.75, 28.0], [27.65, 27.75], [27.75, 27.5], [27.65, 27.25], [27.75, 27.0], [27.53, 26.47], [27.0, 26.25], [26.75, 26.35], [26.5, 26.25], [26.25, 26.35], [26.0, 26.25], [25.75, 26.35], [25.5, 26.25], [24.97, 26.47], [24.82, 26.82], [24.47, 26.97], [24.32, 27.32], [24.25, 27.35], [24.18, 27.32], [24.03, 26.97], [23.5, 26.75], [22.97, 26.97], [22.75, 27.5], [22.85, 27.75], [22.75, 28.0], [22.85, 28.25]]]]}, "2018-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, 28.25], [22.75, 28.5], [22.85, 28.75], [22.75, 29.0], [22.97, 29.53], [23.32, 29.68], [23.47, 30.03], [23.88, 30.2], [23.82, 30.32], [23.47, 30.47], [23.25, 31.0], [23.35, 31.25], [23.25, 31.5], [23.47, 32.03], [24.0, 32.25], [24.25, 32.15], [24.5, 32.25], [24.75, 32.15], [25.0, 32.25], [25.53, 32.03], [25.75, 31.5], [25.65, 31.25], [25.68, 31.18], [26.03, 31.03], [26.25, 30.5], [26.15, 30.25], [26.18, 30.18], [26.53, 30.03], [26.68, 29.68], [27.03, 29.53], [27.18, 29.18], [27.53, 29.03], [27.75, 28.5], [27.65, 28.25], [27.75, 28.0], [27.65, 27.75], [27.75, 27.5], [27.65, 27.25], [27.75, 27.0], [27.53, 26.47], [27.0, 26.25], [26.75, 26.35], [26.5, 26.25], [26.25, 26.35], [26.0, 26.25], [25.75, 26.35], [25.5, 26.25], [24.97, 26.47], [24.82, 26.82], [24.47, 26.97], [24.32, 27.32], [24.25, 27.35], [24.18, 27.32], [24.03, 26.97], [23.5, 26.75], [22.97, 26.97], [22.75, 27.5], [22.85, 27.75], [22.75, 28.0], [22.85, 28.25]]]]}, "2018-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[23.47, 32.03], [24.0, 32.25], [24.25, 32.15], [24.5, 32.25], [24.75, 32.15], [25.0, 32.25], [25.53, 32.03], [25.75, 31.5], [25.65, 31.25], [25.68, 31.18], [26.03, 31.03], [26.25, 30.5], [26.15, 30.25], [26.18, 30.18], [26.53, 30.03], [26.75, 29.5], [26.53, 28.97], [26.0, 28.75], [26.53, 28.53], [26.75, 28.0], [26.53, 27.47], [26.18, 27.32], [26.03, 26.97], [25.5, 26.75], [25.25, 26.85], [25.0, 26.75], [24.47, 26.97], [24.25, 27.5], [24.47, 28.03], [24.82, 28.18], [24.93, 28.43], [24.5, 28.25], [24.25, 28.35], [24.0, 28.25], [23.47, 28.47], [23.25, 29.0], [23.47, 29.53], [24.0, 29.75], [24.25, 29.65], [24.5, 29.75], [23.97, 29.97], [23.82, 30.32], [23.47, 30.47], [23.25, 31.0], [23.35, 31.25], [23.25, 31.5], [23.47, 32.03]], [[25.47, 28.97], [25.32, 29.32], [25.07, 29.43], [25.25, 29.0], [25.07, 28.57], [25.5, 28.75], [25.75, 28.65], [26.0, 28.75], [25.47, 28.97]], [[24.93, 29.57], [24.82, 29.82], [24.75, 29.85], [24.5, 29.75], [24.93, 29.57]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.928614911313616}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.6339583985483395}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.721895889295354, 16.047812014303474, 15.40486730834482, 14.630207037958712]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.622722080934295, 17.77461274842034, 17.073697508231987, 14.98150732717312]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.1160457824995613, 4.3589913217076965, 3.630476151789625, 2.7478178366235064]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.780630976387158, 5.928614911313616, 5.867144040258552, 3.223518066607312]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.517911462204631, 2.1433262818310155, 1.8047486234365067, 1.3464957498275965]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.759392805275064, 2.879283262501115, 2.9348359322767332, 1.5441807050097283]}}