{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:07.444406", "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": "2014-Apr-04_to_2014-Apr-07_359.5_49.5"}, "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": 2014040001446}, "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": "April 04 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 07 2014"}, "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": 59954.299392070054}, "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": ["France", "United Kingdom"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe", "West&Central-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": ["English Channel"]}, "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": 49.5}, "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": 359.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "359.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 354.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 359.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.53, 49.97], [-5.75, 50.5], [-5.53, 51.03], [-5.0, 51.25], [-4.75, 51.15], [-4.68, 51.18], [-4.53, 51.53], [-4.0, 51.75], [-3.47, 51.53], [-3.25, 51.0], [-3.47, 50.47], [-3.82, 50.32], [-3.97, 49.97], [-4.5, 49.75], [-4.75, 49.85], [-5.0, 49.75], [-5.53, 49.97]]]]}, "2014-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.53, 49.97], [-5.75, 50.5], [-5.53, 51.03], [-5.0, 51.25], [-4.75, 51.15], [-4.68, 51.18], [-4.53, 51.53], [-4.0, 51.75], [-3.47, 51.53], [-3.3, 51.12], [-3.0, 51.25], [-2.47, 51.03], [-2.32, 50.68], [-2.25, 50.65], [-2.18, 50.68], [-2.03, 51.03], [-1.5, 51.25], [-1.25, 51.15], [-1.0, 51.25], [-0.75, 51.15], [-0.5, 51.25], [0.03, 51.03], [0.25, 50.5], [0.04, 50.0], [0.25, 49.5], [0.03, 48.97], [-0.5, 48.75], [-0.75, 48.85], [-0.82, 48.82], [-0.97, 48.47], [-1.32, 48.32], [-1.47, 47.97], [-2.0, 47.75], [-2.53, 47.97], [-2.68, 48.32], [-2.75, 48.35], [-3.0, 48.25], [-3.25, 48.35], [-3.5, 48.25], [-3.75, 48.35], [-4.0, 48.25], [-4.25, 48.35], [-4.5, 48.25], [-5.03, 48.47], [-5.25, 49.0], [-5.03, 49.53], [-4.68, 49.68], [-4.65, 49.75], [-4.68, 49.82], [-4.75, 49.85], [-5.0, 49.75], [-5.53, 49.97]]]]}, "2014-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.53, 49.97], [-5.75, 50.5], [-5.53, 51.03], [-5.0, 51.25], [-4.75, 51.15], [-4.68, 51.18], [-4.53, 51.53], [-4.0, 51.75], [-3.47, 51.53], [-3.3, 51.12], [-3.0, 51.25], [-2.47, 51.03], [-2.32, 50.68], [-2.25, 50.65], [-2.18, 50.68], [-2.03, 51.03], [-1.5, 51.25], [-1.25, 51.15], [-1.0, 51.25], [-0.75, 51.15], [-0.5, 51.25], [0.03, 51.03], [0.25, 50.5], [0.04, 50.0], [0.25, 49.5], [0.03, 48.97], [-0.5, 48.75], [-0.75, 48.85], [-0.82, 48.82], [-0.97, 48.47], [-1.32, 48.32], [-1.47, 47.97], [-2.0, 47.75], [-2.53, 47.97], [-2.68, 48.32], [-2.75, 48.35], [-3.0, 48.25], [-3.25, 48.35], [-3.5, 48.25], [-3.75, 48.35], [-4.0, 48.25], [-4.25, 48.35], [-4.5, 48.25], [-5.03, 48.47], [-5.25, 49.0], [-5.03, 49.53], [-4.68, 49.68], [-4.65, 49.75], [-4.68, 49.82], [-4.75, 49.85], [-5.0, 49.75], [-5.53, 49.97]]]]}, "2014-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.75, 50.0], [-4.53, 50.53], [-4.0, 50.75], [-3.75, 50.65], [-3.68, 50.68], [-3.53, 51.03], [-3.0, 51.25], [-2.47, 51.03], [-2.32, 50.68], [-2.25, 50.65], [-2.18, 50.68], [-2.03, 51.03], [-1.5, 51.25], [-1.25, 51.15], [-1.0, 51.25], [-0.75, 51.15], [-0.5, 51.25], [0.03, 51.03], [0.25, 50.5], [0.04, 50.0], [0.25, 49.5], [0.03, 48.97], [-0.5, 48.75], [-0.75, 48.85], [-0.82, 48.82], [-0.97, 48.47], [-1.32, 48.32], [-1.47, 47.97], [-2.0, 47.75], [-2.53, 47.97], [-2.68, 48.32], [-2.75, 48.35], [-3.0, 48.25], [-3.25, 48.35], [-3.5, 48.25], [-3.75, 48.35], [-4.0, 48.25], [-4.25, 48.35], [-4.5, 48.25], [-5.03, 48.47], [-5.25, 49.0], [-5.03, 49.53], [-4.68, 49.68], [-4.65, 49.75], [-4.75, 50.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.305983799986166}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.591244362685437}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.659142994962792, 11.284099597166517, 12.169275069717855, 11.61111199218135]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.000101875183077, 12.592667302275856, 14.652394519136749, 13.000922391400593]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.491932794144835, 2.230846208791881, 3.113896423833425, 2.42199686224058]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.6253739047841123, 3.722291113515382, 5.305983799986166, 3.788269857069338]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.211983243745386, 1.3640957102376967, 1.9191858440017815, 1.5420915664030406]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2339161455245162, 1.788532017994503, 2.3881704325348823, 2.0246104912007445]}}