{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:47.194109", "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-May-04_to_2018-May-08_358.5_55.0"}, "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": 2018050001619}, "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": "May 04 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 08 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 121339.02460645387}, "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": ["United Kingdom"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["North Sea"]}, "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": 55.0}, "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": 358.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "358.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 355.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 360.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.68, 56.82], [-4.03, 56.97], [-4.25, 57.5], [-4.03, 58.03], [-3.5, 58.25], [-3.25, 58.15], [-3.18, 58.18], [-3.03, 58.53], [-2.5, 58.75], [-2.25, 58.65], [-2.0, 58.75], [-1.47, 58.53], [-1.25, 58.0], [-1.35, 57.75], [-1.25, 57.5], [-1.35, 57.25], [-1.25, 57.0], [-1.46, 56.5], [-1.32, 56.18], [-0.97, 56.03], [-0.75, 55.5], [-0.85, 55.25], [-0.75, 55.0], [-0.97, 54.47], [-1.5, 54.25], [-1.75, 54.35], [-2.0, 54.25], [-2.53, 54.47], [-2.75, 55.0], [-2.65, 55.25], [-2.68, 55.32], [-2.75, 55.35], [-3.0, 55.25], [-3.25, 55.35], [-3.5, 55.25], [-4.03, 55.47], [-4.25, 56.0], [-4.03, 56.53], [-3.68, 56.68], [-3.65, 56.75], [-3.68, 56.82]]]]}, "2018-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.03, 57.03], [-4.68, 57.18], [-4.53, 57.53], [-4.18, 57.68], [-4.03, 58.03], [-3.5, 58.25], [-3.25, 58.15], [-3.18, 58.18], [-3.03, 58.53], [-2.5, 58.75], [-2.25, 58.65], [-2.0, 58.75], [-1.47, 58.53], [-1.25, 58.0], [-1.35, 57.75], [-1.25, 57.5], [-1.35, 57.25], [-1.25, 57.0], [-1.46, 56.5], [-1.32, 56.18], [-0.97, 56.03], [-0.82, 55.68], [-0.47, 55.53], [-0.25, 55.0], [-0.35, 54.75], [-0.32, 54.68], [0.03, 54.53], [0.25, 54.0], [0.15, 53.75], [0.25, 53.5], [0.15, 53.25], [0.25, 53.0], [0.03, 52.47], [-0.32, 52.32], [-0.47, 51.97], [-0.82, 51.82], [-0.85, 51.75], [-0.75, 51.5], [-0.85, 51.25], [-0.75, 51.0], [-0.97, 50.47], [-1.5, 50.25], [-1.75, 50.35], [-2.0, 50.25], [-2.25, 50.35], [-2.5, 50.25], [-3.03, 50.47], [-3.25, 51.0], [-3.15, 51.25], [-3.18, 51.32], [-3.53, 51.47], [-3.75, 52.0], [-3.65, 52.25], [-3.75, 52.5], [-3.53, 53.03], [-3.18, 53.18], [-3.03, 53.53], [-2.68, 53.68], [-2.65, 53.75], [-2.75, 54.0], [-2.54, 54.5], [-2.68, 54.82], [-3.03, 54.97], [-3.18, 55.32], [-3.25, 55.35], [-3.5, 55.25], [-3.75, 55.35], [-4.0, 55.25], [-4.25, 55.35], [-4.5, 55.25], [-5.03, 55.47], [-5.25, 56.0], [-5.15, 56.25], [-5.25, 56.5], [-5.03, 57.03]]]]}, "2018-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.03, 57.03], [-4.68, 57.18], [-4.53, 57.53], [-4.18, 57.68], [-4.03, 58.03], [-3.5, 58.25], [-3.25, 58.15], [-3.18, 58.18], [-3.03, 58.53], [-2.5, 58.75], [-2.25, 58.65], [-2.0, 58.75], [-1.47, 58.53], [-1.25, 58.0], [-1.35, 57.75], [-1.25, 57.5], [-1.35, 57.25], [-1.25, 57.0], [-1.46, 56.5], [-1.32, 56.18], [-0.97, 56.03], [-0.82, 55.68], [-0.47, 55.53], [-0.25, 55.0], [-0.35, 54.75], [-0.32, 54.68], [0.03, 54.53], [0.25, 54.0], [0.15, 53.75], [0.25, 53.5], [0.15, 53.25], [0.18, 53.18], [0.53, 53.03], [0.75, 52.5], [0.53, 51.97], [0.18, 51.82], [0.15, 51.75], [0.18, 51.68], [0.25, 51.65], [0.5, 51.75], [1.03, 51.53], [1.25, 51.0], [1.03, 50.47], [0.5, 50.25], [0.25, 50.35], [0.0, 50.25], [-0.25, 50.35], [-0.5, 50.25], [-0.75, 50.35], [-1.0, 50.25], [-1.25, 50.35], [-1.5, 50.25], [-1.75, 50.35], [-2.0, 50.25], [-2.25, 50.35], [-2.5, 50.25], [-3.03, 50.47], [-3.25, 51.0], [-3.15, 51.25], [-3.18, 51.32], [-3.53, 51.47], [-3.75, 52.0], [-3.65, 52.25], [-3.75, 52.5], [-3.53, 53.03], [-3.18, 53.18], [-3.03, 53.53], [-2.68, 53.68], [-2.65, 53.75], [-2.75, 54.0], [-2.65, 54.25], [-2.75, 54.5], [-2.65, 54.75], [-2.68, 54.82], [-3.03, 54.97], [-3.18, 55.32], [-3.25, 55.35], [-3.5, 55.25], [-3.75, 55.35], [-4.0, 55.25], [-4.25, 55.35], [-4.5, 55.25], [-5.03, 55.47], [-5.25, 56.0], [-5.15, 56.25], [-5.25, 56.5], [-5.03, 57.03]]]]}, "2018-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.03, 57.03], [-4.68, 57.18], [-4.53, 57.53], [-4.0, 57.75], [-3.47, 57.53], [-3.32, 57.18], [-3.25, 57.15], [-3.0, 57.25], [-2.47, 57.03], [-2.32, 56.68], [-1.97, 56.53], [-1.82, 56.18], [-1.47, 56.03], [-1.32, 55.68], [-1.25, 55.65], [-1.0, 55.75], [-0.47, 55.53], [-0.25, 55.0], [-0.35, 54.75], [-0.32, 54.68], [0.03, 54.53], [0.25, 54.0], [0.15, 53.75], [0.25, 53.5], [0.15, 53.25], [0.18, 53.18], [0.53, 53.03], [0.75, 52.5], [0.53, 51.97], [0.18, 51.82], [0.15, 51.75], [0.18, 51.68], [0.25, 51.65], [0.5, 51.75], [1.03, 51.53], [1.25, 51.0], [1.03, 50.47], [0.5, 50.25], [0.25, 50.35], [0.0, 50.25], [-0.25, 50.35], [-0.5, 50.25], [-0.75, 50.35], [-1.0, 50.25], [-1.25, 50.35], [-1.5, 50.25], [-1.75, 50.35], [-2.0, 50.25], [-2.25, 50.35], [-2.5, 50.25], [-3.03, 50.47], [-3.25, 51.0], [-3.15, 51.25], [-3.18, 51.32], [-3.53, 51.47], [-3.75, 52.0], [-3.65, 52.25], [-3.75, 52.5], [-3.53, 53.03], [-3.18, 53.18], [-3.03, 53.53], [-2.68, 53.68], [-2.65, 53.75], [-2.75, 54.0], [-2.65, 54.25], [-2.75, 54.5], [-2.65, 54.75], [-2.68, 54.82], [-3.03, 54.97], [-3.18, 55.32], [-3.25, 55.35], [-3.5, 55.25], [-3.75, 55.35], [-4.0, 55.25], [-4.25, 55.35], [-4.5, 55.25], [-5.03, 55.47], [-5.25, 56.0], [-5.15, 56.25], [-5.25, 56.5], [-5.03, 57.03]]]]}, "2018-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.53, 57.03], [-3.0, 57.25], [-2.47, 57.03], [-2.32, 56.68], [-1.97, 56.53], [-1.82, 56.18], [-1.47, 56.03], [-1.32, 55.68], [-1.25, 55.65], [-1.0, 55.75], [-0.47, 55.53], [-0.25, 55.0], [-0.35, 54.75], [-0.32, 54.68], [0.03, 54.53], [0.25, 54.0], [0.15, 53.75], [0.25, 53.5], [0.15, 53.25], [0.18, 53.18], [0.53, 53.03], [0.75, 52.5], [0.53, 51.97], [0.18, 51.82], [0.15, 51.75], [0.18, 51.68], [0.25, 51.65], [0.5, 51.75], [1.03, 51.53], [1.25, 51.0], [1.03, 50.47], [0.5, 50.25], [0.25, 50.35], [0.0, 50.25], [-0.25, 50.35], [-0.5, 50.25], [-0.75, 50.35], [-1.0, 50.25], [-1.53, 50.47], [-1.75, 51.0], [-1.62, 51.3], [-2.03, 51.47], [-2.25, 52.0], [-2.15, 52.25], [-2.25, 52.5], [-2.15, 52.75], [-2.25, 53.0], [-2.15, 53.25], [-2.25, 53.5], [-2.15, 53.75], [-2.18, 53.82], [-2.53, 53.97], [-2.75, 54.5], [-2.65, 54.75], [-2.75, 55.0], [-2.65, 55.25], [-2.68, 55.32], [-2.75, 55.35], [-3.0, 55.25], [-3.53, 55.47], [-3.75, 56.0], [-3.65, 56.25], [-3.75, 56.5], [-3.53, 57.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.73658200481367}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.841355445173193}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.655630795983257, 13.58921267115494, 14.680960969458567, 16.389918248946344, 15.332241873789087]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.005917719172544, 15.702626293205128, 16.689564536518787, 18.45674620196388, 17.46106772049734]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.1163985856359773, 4.1078595649259135, 4.896303399546722, 6.155339840424179, 4.797251923349703]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.5611745114111955, 5.7537713307209515, 6.564877759652916, 7.73658200481367, 6.038650124795538]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5769519205186189, 1.7686658943840923, 1.9833249330106257, 2.310137703301822, 1.7799475084680947]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.1820601400837325, 2.5468051717831943, 2.591244256858683, 2.812816073909233, 2.392129083416706]}}