{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:53.902568", "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-Aug-18_to_2018-Aug-22_351.0_39.5"}, "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": 2018080002510}, "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": "August 18 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 22 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": 58353.67062527655}, "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": ["Portugal", "Spain"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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 Atlantic Ocean"]}, "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": 39.5}, "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": 351.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "351.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 350.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 352.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.65, 39.25], [-9.75, 39.5], [-9.65, 39.75], [-9.75, 40.0], 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[-7.85, 41.75], [-7.75, 41.5], [-7.85, 41.25], [-7.82, 41.18], [-7.47, 41.03], [-7.25, 40.5], [-7.47, 39.97], [-7.82, 39.82], [-7.85, 39.75], [-7.82, 39.68], [-7.47, 39.53], [-7.25, 39.0], [-7.47, 38.47], [-7.82, 38.32], [-7.97, 37.97], [-8.5, 37.75], [-8.75, 37.85], [-9.0, 37.75], [-9.53, 37.97], [-9.75, 38.5], [-9.65, 38.75], [-9.75, 39.0], [-9.65, 39.25]]]]}, "2018-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.65, 39.25], [-9.75, 39.5], [-9.65, 39.75], [-9.75, 40.0], [-9.65, 40.25], [-9.75, 40.5], [-9.65, 40.75], [-9.75, 41.0], [-9.65, 41.25], [-9.75, 41.5], [-9.54, 42.0], [-9.75, 42.5], [-9.65, 42.75], [-9.75, 43.0], [-9.53, 43.53], [-9.0, 43.75], [-8.75, 43.65], [-8.68, 43.68], [-8.53, 44.03], [-8.0, 44.25], [-7.47, 44.03], [-7.25, 43.5], [-7.35, 43.25], [-7.25, 43.0], [-7.35, 42.75], [-7.25, 42.5], [-7.35, 42.25], [-7.25, 42.0], [-7.47, 41.47], [-7.82, 41.32], [-7.85, 41.25], [-7.82, 41.18], [-7.47, 41.03], [-7.25, 40.5], [-7.47, 39.97], [-7.82, 39.82], [-7.85, 39.75], [-7.82, 39.68], [-7.47, 39.53], [-7.25, 39.0], [-7.47, 38.47], [-7.82, 38.32], [-7.97, 37.97], [-8.5, 37.75], [-8.75, 37.85], [-9.0, 37.75], [-9.53, 37.97], [-9.75, 38.5], [-9.65, 38.75], [-9.75, 39.0], [-9.65, 39.25]]]]}, "2018-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.53, 40.03], [-9.18, 40.18], [-9.15, 40.25], [-9.25, 40.5], [-9.15, 40.75], [-9.18, 40.82], [-9.53, 40.97], [-9.75, 41.5], [-9.54, 42.0], [-9.75, 42.5], [-9.65, 42.75], [-9.75, 43.0], [-9.53, 43.53], [-9.0, 43.75], [-8.75, 43.65], [-8.68, 43.68], [-8.53, 44.03], [-8.0, 44.25], [-7.47, 44.03], [-7.25, 43.5], [-7.35, 43.25], [-7.25, 43.0], [-7.35, 42.75], [-7.25, 42.5], [-7.35, 42.25], [-7.25, 42.0], [-7.47, 41.47], [-7.82, 41.32], [-7.85, 41.25], [-7.82, 41.18], [-7.47, 41.03], [-7.25, 40.5], [-7.47, 39.97], [-7.82, 39.82], [-7.85, 39.75], [-7.82, 39.68], [-7.47, 39.53], [-7.25, 39.0], [-7.47, 38.47], [-8.0, 38.25], [-8.25, 38.35], [-8.5, 38.25], [-8.75, 38.35], [-9.0, 38.25], [-9.53, 38.47], [-9.75, 39.0], [-9.65, 39.25], [-9.75, 39.5], [-9.53, 40.03]]]]}, "2018-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-9.75, 43.0], [-9.53, 43.53], [-9.0, 43.75], [-8.75, 43.65], [-8.68, 43.68], [-8.53, 44.03], [-8.0, 44.25], [-7.47, 44.03], [-7.25, 43.5], [-7.35, 43.25], [-7.25, 43.0], [-7.35, 42.75], [-7.25, 42.5], [-7.35, 42.25], [-7.25, 42.0], [-7.47, 41.47], [-8.0, 41.25], [-8.25, 41.35], [-8.5, 41.25], [-9.03, 41.47], [-9.25, 42.0], [-9.15, 42.25], [-9.18, 42.32], [-9.53, 42.47], [-9.75, 43.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.031917158383408}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.052078565512712}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.797447692991682, 24.916882738798506, 24.652886063385893, 24.213857881863532, 21.953383501575104]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.99098496613385, 29.898928078571032, 29.52282526815867, 28.120618577940434, 23.355186425838497]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.076163680292118, 4.3782676725461585, 4.509907097749349, 4.089048613210065, 3.4213175645822673]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.742914292417197, 6.4427475220802535, 7.031917158383408, 5.33190745708805, 5.189799948929988]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6555071769823744, 2.3235899432428986, 2.3296047862635523, 1.9174386441645759, 1.546834977459266]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0042389238830545, 3.2048235086452648, 3.383422558315337, 2.402015110204737, 1.8968180509981922]}}