{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:01.139354", "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-23_to_2018-Jan-26_1.5_26.5"}, "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": 2018010002409}, "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 23 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 26 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": 115725.3698366601}, "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"]}, "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": 26.5}, "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": 1.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "1.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": -0.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 4.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 28.53], [-0.5, 28.75], [-0.25, 28.65], [-0.18, 28.68], [-0.03, 29.03], [0.5, 29.25], [1.03, 29.03], [1.18, 28.68], [1.25, 28.65], [1.5, 28.75], [1.75, 28.65], [2.0, 28.75], [2.53, 28.53], [2.68, 28.18], [2.75, 28.15], [3.0, 28.25], [3.25, 28.15], [3.5, 28.25], [4.03, 28.03], [4.18, 27.68], [4.53, 27.53], [4.75, 27.0], [4.65, 26.75], [4.75, 26.5], [4.53, 25.97], [4.0, 25.75], [3.75, 25.85], [3.5, 25.75], [3.25, 25.85], [3.0, 25.75], [2.75, 25.85], [2.5, 25.75], [2.25, 25.85], [2.0, 25.75], [1.75, 25.85], [1.5, 25.75], [1.25, 25.85], [1.0, 25.75], [0.47, 25.97], [0.32, 26.32], [0.25, 26.35], [0.0, 26.25], [-0.53, 26.47], [-0.68, 26.82], [-1.03, 26.97], [-1.25, 27.5], [-1.15, 27.75], [-1.25, 28.0], [-1.03, 28.53]]]]}, "2018-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 28.53], [-0.5, 28.75], [-0.25, 28.65], [-0.18, 28.68], [-0.03, 29.03], [0.5, 29.25], [1.03, 29.03], [1.18, 28.68], [1.25, 28.65], [1.5, 28.75], [1.75, 28.65], [2.0, 28.75], [2.53, 28.53], [2.68, 28.18], [2.75, 28.15], [3.0, 28.25], [3.25, 28.15], [3.5, 28.25], [4.03, 28.03], [4.18, 27.68], [4.53, 27.53], [4.75, 27.0], [4.65, 26.75], [4.75, 26.5], [4.53, 25.97], [4.0, 25.75], [3.75, 25.85], [3.5, 25.75], [3.25, 25.85], [3.18, 25.82], [3.15, 25.75], [3.25, 25.5], [3.03, 24.97], [2.68, 24.82], [2.53, 24.47], [2.0, 24.25], [1.47, 24.47], [1.25, 25.0], [1.35, 25.25], [1.32, 25.32], [1.0, 25.46], [0.5, 25.25], [0.25, 25.35], [0.0, 25.25], [-0.53, 25.47], [-0.75, 26.0], [-0.65, 26.25], [-0.75, 26.5], [-0.65, 26.75], [-0.68, 26.82], [-1.03, 26.97], [-1.25, 27.5], [-1.15, 27.75], [-1.25, 28.0], [-1.03, 28.53]]]]}, "2018-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-1.03, 28.53], [-0.5, 28.75], [-0.25, 28.65], [-0.18, 28.68], [-0.03, 29.03], [0.5, 29.25], [1.03, 29.03], [1.18, 28.68], [1.25, 28.65], [1.5, 28.75], [1.75, 28.65], [2.0, 28.75], [2.53, 28.53], [2.68, 28.18], [2.75, 28.15], [3.0, 28.25], [3.25, 28.15], [3.5, 28.25], [4.03, 28.03], [4.18, 27.68], [4.53, 27.53], [4.75, 27.0], [4.65, 26.75], [4.75, 26.5], [4.53, 25.97], [4.0, 25.75], [3.75, 25.85], [3.5, 25.75], [3.25, 25.85], [3.18, 25.82], [3.15, 25.75], [3.25, 25.5], [3.03, 24.97], [2.68, 24.82], [2.53, 24.47], [2.0, 24.25], [1.47, 24.47], [1.25, 25.0], [1.35, 25.25], [1.32, 25.32], [1.0, 25.46], [0.5, 25.25], [0.25, 25.35], [0.0, 25.25], [-0.53, 25.47], [-0.75, 26.0], [-0.65, 26.25], [-0.75, 26.5], [-0.65, 26.75], [-0.68, 26.82], [-1.03, 26.97], [-1.25, 27.5], [-1.15, 27.75], [-1.25, 28.0], [-1.03, 28.53]]]]}, "2018-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-0.65, 26.75], [-0.75, 27.0], [-0.65, 27.25], [-0.75, 27.5], [-0.53, 28.03], [0.0, 28.25], [0.25, 28.15], [0.5, 28.25], [0.75, 28.15], [1.0, 28.25], [1.53, 28.03], [1.75, 27.5], [1.65, 27.25], [1.68, 27.18], [1.75, 27.15], [2.0, 27.25], [2.53, 27.03], [2.68, 26.68], [3.03, 26.53], [3.25, 26.0], [3.15, 25.75], [3.25, 25.5], [3.03, 24.97], [2.68, 24.82], [2.53, 24.47], [2.0, 24.25], [1.47, 24.47], [1.25, 25.0], [1.35, 25.25], [1.32, 25.32], [1.0, 25.46], [0.5, 25.25], [0.25, 25.35], [0.0, 25.25], [-0.53, 25.47], [-0.75, 26.0], [-0.65, 26.25], [-0.75, 26.5], [-0.65, 26.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.7641138113732495}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.381734597153923}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.746416092158654, 19.588184339851523, 19.184694435930908, 18.97041901102824]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.497427589231336, 21.195087345635102, 21.31332309659598, 20.67210834283469]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.6848008112714545, 5.118744337604038, 4.5265019140525125, 3.6063264255536094]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.2231416380468545, 5.7641138113732495, 5.3900513939341295, 4.4090545679441675]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4990897004758417, 2.0373175087261073, 1.7982321448619532, 1.3914785539733845]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.694769045870419, 2.3481612435159547, 2.104836690315234, 1.5874211020769613]}}