{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:01:59.370238", "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-Dec-17_to_2014-Dec-19_0.5_48.5"}, "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": 2014120002313}, "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": "December 17 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 19 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 79107.90757273197}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["Bay of Biscay", "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": 48.5}, "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": 360.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "0.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 357.25}, "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": 44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.25, 46.5], [-3.03, 47.03], [-2.68, 47.18], [-2.53, 47.53], [-2.0, 47.75], [-1.75, 47.65], [-1.68, 47.68], [-1.53, 48.03], [-1.0, 48.25], [-0.75, 48.15], [-0.68, 48.18], [-0.65, 48.25], [-0.75, 48.5], [-0.54, 49.0], [-0.75, 49.5], [-0.53, 50.03], [-0.18, 50.18], [-0.03, 50.53], [0.5, 50.75], [0.75, 50.65], [1.0, 50.75], [1.25, 50.65], [1.5, 50.75], [2.03, 50.53], [2.2, 50.12], [2.5, 50.25], [3.03, 50.03], [3.25, 49.5], [3.03, 48.97], [2.68, 48.82], [2.53, 48.47], [2.18, 48.32], [2.03, 47.97], [1.5, 47.75], [1.25, 47.85], [1.18, 47.82], [1.03, 47.47], [0.68, 47.32], [0.53, 46.97], [0.18, 46.82], [0.04, 46.5], [0.25, 46.0], [0.03, 45.47], [-0.32, 45.32], [-0.35, 45.25], [-0.25, 45.0], [-0.47, 44.47], [-1.0, 44.25], [-1.25, 44.35], [-1.5, 44.25], [-2.03, 44.47], [-2.18, 44.82], [-2.53, 44.97], [-2.75, 45.5], [-2.65, 45.75], [-2.68, 45.82], [-3.03, 45.97], [-3.25, 46.5]]]]}, "2014-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.25, 46.5], [-3.03, 47.03], [-2.68, 47.18], [-2.53, 47.53], [-2.0, 47.75], [-1.75, 47.65], [-1.68, 47.68], [-1.53, 48.03], [-1.0, 48.25], [-0.75, 48.15], [-0.68, 48.18], [-0.65, 48.25], [-0.75, 48.5], [-0.54, 49.0], [-0.75, 49.5], [-0.53, 50.03], [-0.18, 50.18], [-0.03, 50.53], [0.5, 50.75], [0.75, 50.65], [1.0, 50.75], [1.25, 50.65], [1.5, 50.75], [2.03, 50.53], [2.2, 50.12], [2.5, 50.25], [3.03, 50.03], [3.25, 49.5], [3.03, 48.97], [2.68, 48.82], [2.53, 48.47], [2.18, 48.32], [2.03, 47.97], [1.5, 47.75], [1.25, 47.85], [1.18, 47.82], [1.03, 47.47], [0.68, 47.32], [0.53, 46.97], [0.18, 46.82], [0.04, 46.5], [0.25, 46.0], [0.03, 45.47], [-0.32, 45.32], [-0.35, 45.25], [-0.25, 45.0], [-0.47, 44.47], [-1.0, 44.25], [-1.25, 44.35], [-1.5, 44.25], [-2.03, 44.47], [-2.18, 44.82], [-2.53, 44.97], [-2.75, 45.5], [-2.65, 45.75], [-2.68, 45.82], [-3.03, 45.97], [-3.25, 46.5]]]]}, "2014-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-3.25, 46.5], [-3.03, 47.03], [-2.68, 47.18], [-2.53, 47.53], [-2.0, 47.75], [-1.75, 47.65], [-1.68, 47.68], [-1.53, 48.03], [-1.0, 48.25], [-0.75, 48.15], [-0.68, 48.18], [-0.65, 48.25], [-0.75, 48.5], [-0.54, 49.0], [-0.75, 49.5], [-0.53, 50.03], [-0.18, 50.18], [-0.03, 50.53], [0.5, 50.75], [0.75, 50.65], [1.0, 50.75], [1.25, 50.65], [1.5, 50.75], [2.03, 50.53], [2.2, 50.12], [2.5, 50.25], [3.03, 50.03], [3.25, 49.5], [3.03, 48.97], [2.68, 48.82], [2.53, 48.47], [2.18, 48.32], [2.03, 47.97], [1.5, 47.75], [1.25, 47.85], [1.18, 47.82], [1.03, 47.47], [0.68, 47.32], [0.53, 46.97], [0.18, 46.82], [0.04, 46.5], [0.25, 46.0], [0.03, 45.47], [-0.32, 45.32], [-0.35, 45.25], [-0.25, 45.0], [-0.47, 44.47], [-1.0, 44.25], [-1.25, 44.35], [-1.5, 44.25], [-2.03, 44.47], [-2.18, 44.82], [-2.53, 44.97], [-2.75, 45.5], [-2.65, 45.75], [-2.68, 45.82], [-3.03, 45.97], [-3.25, 46.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.260259928760945}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.853368023743394}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.103179551806932, 12.354275390099474, 11.489737787869728]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.901681442706604, 14.15665775507648, 14.106227937751157]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.52694572333133, 5.579198852795146, 4.453959495103701]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.2288913763097185, 7.260259928760945, 5.448383048331436]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2559071964213555, 1.544924553265342, 1.248295230537723]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.424441314410616, 1.9207185118326346, 1.410557266968659]}}