{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:58.570995", "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": "2017-Sep-17_to_2017-Sep-20_0.0_25.0"}, "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": 2017090002106}, "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": "September 17 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 20 2017"}, "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": 79508.94751678285}, "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"]}, "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": 25.0}, "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": 360.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "0.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 356.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 362.75}, "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": 25.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-2.68, 22.68], [-2.53, 23.03], [-2.0, 23.25], [-1.75, 23.15], [-1.68, 23.18], [-1.53, 23.53], [-1.0, 23.75], [-0.75, 23.65], [-0.68, 23.68], [-0.53, 24.03], [-0.18, 24.18], [-0.12, 24.3], [-0.25, 24.35], [-0.5, 24.25], [-1.03, 24.47], [-1.25, 25.0], [-1.03, 25.53], [-0.68, 25.68], [-0.53, 26.03], [0.0, 26.25], [0.25, 26.15], [0.5, 26.25], [1.03, 26.03], [1.18, 25.68], [1.53, 25.53], [1.68, 25.18], [1.75, 25.15], [2.0, 25.25], [2.25, 25.15], [2.5, 25.25], [3.03, 25.03], [3.25, 24.5], [3.03, 23.97], [2.5, 23.75], [2.25, 23.85], [2.18, 23.82], [2.03, 23.47], [1.5, 23.25], [1.25, 23.35], [1.0, 23.25], [0.75, 23.35], [0.68, 23.32], [0.53, 22.97], [0.18, 22.82], [0.15, 22.75], [0.18, 22.68], [0.53, 22.53], [0.75, 22.0], [0.53, 21.47], [0.0, 21.25], [-0.25, 21.35], [-0.5, 21.25], [-1.0, 21.46], [-1.5, 21.25], [-1.75, 21.35], [-1.82, 21.32], [-1.97, 20.97], [-2.5, 20.75], [-2.75, 20.85], [-3.0, 20.75], [-3.53, 20.97], [-3.75, 21.5], [-3.53, 22.03], [-3.18, 22.18], [-3.03, 22.53], [-2.68, 22.68]]]]}, "2017-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.18, 22.18], [-3.03, 22.53], [-2.68, 22.68], [-2.53, 23.03], [-2.0, 23.25], [-1.75, 23.15], [-1.68, 23.18], [-1.53, 23.53], [-1.0, 23.75], [-0.75, 23.65], [-0.68, 23.68], [-0.53, 24.03], [-0.18, 24.18], [-0.12, 24.3], [-0.25, 24.35], [-0.5, 24.25], [-1.03, 24.47], [-1.25, 25.0], [-1.03, 25.53], [-0.68, 25.68], [-0.53, 26.03], [0.0, 26.25], [0.25, 26.15], [0.5, 26.25], [1.03, 26.03], [1.18, 25.68], [1.53, 25.53], [1.68, 25.18], [1.75, 25.15], [2.0, 25.25], [2.25, 25.15], [2.5, 25.25], [3.03, 25.03], [3.25, 24.5], [3.03, 23.97], [2.5, 23.75], [2.25, 23.85], [2.18, 23.82], [2.03, 23.47], [1.5, 23.25], [1.25, 23.35], [1.0, 23.25], [0.75, 23.35], [0.68, 23.32], [0.53, 22.97], [0.18, 22.82], [0.15, 22.75], [0.18, 22.68], [0.53, 22.53], [0.75, 22.0], [0.53, 21.47], [0.0, 21.25], [-0.25, 21.35], [-0.5, 21.25], [-1.0, 21.46], [-1.5, 21.25], [-1.75, 21.35], [-1.82, 21.32], [-1.97, 20.97], [-2.32, 20.82], [-2.47, 20.47], [-3.0, 20.25], [-3.25, 20.35], [-3.5, 20.25], [-4.03, 20.47], [-4.25, 21.0], [-4.03, 21.53], [-3.68, 21.68], [-3.53, 22.03], [-3.18, 22.18]]]]}, "2017-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.18, 22.18], [-3.03, 22.53], [-2.68, 22.68], [-2.53, 23.03], [-2.0, 23.25], [-1.75, 23.15], [-1.68, 23.18], [-1.53, 23.53], [-1.0, 23.75], [-0.75, 23.65], [-0.68, 23.68], [-0.53, 24.03], [-0.18, 24.18], [-0.12, 24.3], [-0.25, 24.35], [-0.5, 24.25], [-1.03, 24.47], [-1.25, 25.0], [-1.03, 25.53], [-0.68, 25.68], [-0.53, 26.03], [0.0, 26.25], [0.25, 26.15], [0.5, 26.25], [1.03, 26.03], [1.18, 25.68], [1.53, 25.53], [1.68, 25.18], [1.75, 25.15], [2.0, 25.25], [2.25, 25.15], [2.5, 25.25], [3.03, 25.03], [3.25, 24.5], [3.03, 23.97], [2.5, 23.75], [2.25, 23.85], [2.18, 23.82], [2.03, 23.47], [1.5, 23.25], [1.25, 23.35], [1.0, 23.25], [0.75, 23.35], [0.68, 23.32], [0.53, 22.97], [0.18, 22.82], [0.15, 22.75], [0.18, 22.68], [0.53, 22.53], [0.75, 22.0], [0.53, 21.47], [0.0, 21.25], [-0.25, 21.35], [-0.5, 21.25], [-1.0, 21.46], [-1.5, 21.25], [-1.75, 21.35], [-1.82, 21.32], [-1.97, 20.97], [-2.32, 20.82], [-2.47, 20.47], [-3.0, 20.25], [-3.25, 20.35], [-3.5, 20.25], [-4.03, 20.47], [-4.25, 21.0], [-4.03, 21.53], [-3.68, 21.68], [-3.53, 22.03], [-3.18, 22.18]]]]}, "2017-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.03, 20.47], [-4.25, 21.0], [-4.03, 21.53], [-3.5, 21.75], [-3.25, 21.65], [-3.0, 21.75], [-2.47, 21.53], [-2.25, 21.0], [-2.47, 20.47], [-3.0, 20.25], [-3.25, 20.35], [-3.5, 20.25], [-4.03, 20.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.2588903784215404}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.249056617022871}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [36.98826723486604, 36.62097465140698, 36.54426544795575, 36.12538744013841]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [38.068560478356346, 37.50057467021628, 37.38439575491486, 36.205018405001226]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.3464968734299747, 2.163019750841392, 2.256668969537446, 2.080276475067194]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.2588903784215404, 2.9228116664044137, 2.9317388492551117, 2.1928901347571923]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4707128787452257, 1.3392979973416936, 1.3442175757743564, 1.2594859421879243]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7601998419016143, 1.5797887428184416, 1.610364635097569, 1.343160673506886]}}