{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:23.659717", "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": "2023-May-03_to_2023-May-08_10.0_46.5"}, "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": 2023050001389}, "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 03 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 08 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 66771.8290201872}, "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": ["Austria", "France", "Italy", "Switzerland"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "Europe", "Europe", "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": []}, "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": 46.5}, "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": 10.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "10.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 6.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 10.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[8.25, 44.35], [8.0, 44.25], [7.75, 44.35], [7.68, 44.32], [7.53, 43.97], [7.0, 43.75], [6.5, 43.96], [6.0, 43.75], [5.47, 43.97], [5.25, 44.5], [5.35, 44.75], [5.25, 45.0], [5.35, 45.25], [5.25, 45.5], [5.35, 45.75], [5.25, 46.0], [5.47, 46.53], [6.0, 46.75], [6.25, 46.65], [6.32, 46.68], [6.47, 47.03], [7.0, 47.25], [7.25, 47.15], [7.5, 47.25], [7.75, 47.15], [8.0, 47.25], [8.25, 47.15], [8.32, 47.18], [8.47, 47.53], [9.0, 47.75], [9.25, 47.65], [9.5, 47.75], [9.75, 47.65], [10.0, 47.75], [10.25, 47.65], [10.5, 47.75], [11.03, 47.53], [11.25, 47.0], [11.15, 46.75], [11.25, 46.5], [11.03, 45.97], [10.63, 45.8], [10.75, 45.5], [10.53, 44.97], [10.0, 44.75], [9.75, 44.85], [9.68, 44.82], [9.53, 44.47], [9.0, 44.25], [8.75, 44.35], [8.5, 44.25], [8.25, 44.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["West&Central-Europe", "Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.5, 45.75], [8.97, 45.97], [8.75, 46.5], [8.97, 47.03], [9.5, 47.25], [9.75, 47.15], [10.0, 47.25], [10.53, 47.03], [10.75, 46.5], [10.53, 45.97], [10.0, 45.75], [9.75, 45.85], [9.5, 45.75]]]]}, "2023-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.25, 45.0], [5.35, 45.25], [5.25, 45.5], [5.35, 45.75], [5.25, 46.0], [5.47, 46.53], [6.0, 46.75], [6.25, 46.65], [6.32, 46.68], [6.47, 47.03], [7.0, 47.25], [7.25, 47.15], [7.5, 47.25], [7.75, 47.15], [8.0, 47.25], [8.25, 47.15], [8.32, 47.18], [8.47, 47.53], [9.0, 47.75], [9.25, 47.65], [9.5, 47.75], [9.75, 47.65], [10.0, 47.75], [10.25, 47.65], [10.5, 47.75], [11.03, 47.53], [11.25, 47.0], [11.15, 46.75], [11.25, 46.5], [11.03, 45.97], [10.5, 45.75], [10.25, 45.85], [10.0, 45.75], [9.75, 45.85], [9.5, 45.75], [9.0, 45.96], [8.5, 45.75], [9.03, 45.53], [9.25, 45.0], [9.03, 44.47], [8.5, 44.25], [8.25, 44.35], [8.0, 44.25], [7.75, 44.35], [7.68, 44.32], [7.53, 43.97], [7.0, 43.75], [6.5, 43.96], [6.0, 43.75], [5.47, 43.97], [5.25, 44.5], [5.35, 44.75], [5.25, 45.0]], [[8.25, 45.85], [8.18, 45.82], [8.13, 45.7], [8.25, 45.65], [8.5, 45.75], [8.25, 45.85]]]]}, "2023-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.25, 45.0], [5.35, 45.25], [5.25, 45.5], [5.35, 45.75], [5.25, 46.0], [5.47, 46.53], [6.0, 46.75], [6.25, 46.65], [6.32, 46.68], [6.47, 47.03], [7.0, 47.25], [7.25, 47.15], [7.5, 47.25], [7.75, 47.15], [8.0, 47.25], [8.25, 47.15], [8.32, 47.18], [8.47, 47.53], [9.0, 47.75], [9.25, 47.65], [9.5, 47.75], [9.75, 47.65], [10.0, 47.75], [10.25, 47.65], [10.5, 47.75], [11.03, 47.53], [11.25, 47.0], [11.15, 46.75], [11.25, 46.5], [11.03, 45.97], [10.63, 45.8], [10.75, 45.5], [10.53, 44.97], [10.0, 44.75], [9.75, 44.85], [9.68, 44.82], [9.53, 44.47], [9.0, 44.25], [8.75, 44.35], [8.5, 44.25], [8.25, 44.35], [8.0, 44.25], [7.75, 44.35], [7.68, 44.32], [7.53, 43.97], [7.0, 43.75], [6.5, 43.96], [6.0, 43.75], [5.47, 43.97], [5.25, 44.5], [5.35, 44.75], [5.25, 45.0]]]]}, "2023-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.25, 45.0], [5.35, 45.25], [5.25, 45.5], [5.35, 45.75], [5.25, 46.0], [5.47, 46.53], [6.0, 46.75], [6.25, 46.65], [6.32, 46.68], [6.47, 47.03], [7.0, 47.25], [7.25, 47.15], [7.5, 47.25], [7.75, 47.15], [8.0, 47.25], [8.25, 47.15], [8.32, 47.18], [8.47, 47.53], [9.0, 47.75], [9.25, 47.65], [9.5, 47.75], [9.75, 47.65], [10.0, 47.75], [10.25, 47.65], [10.5, 47.75], [11.03, 47.53], [11.25, 47.0], [11.15, 46.75], [11.25, 46.5], [11.03, 45.97], [10.63, 45.8], [10.75, 45.5], [10.53, 44.97], [10.0, 44.75], [9.75, 44.85], [9.68, 44.82], [9.53, 44.47], [9.0, 44.25], [8.75, 44.35], [8.5, 44.25], [8.25, 44.35], [8.0, 44.25], [7.75, 44.35], [7.68, 44.32], [7.53, 43.97], [7.0, 43.75], [6.5, 43.96], [6.0, 43.75], [5.47, 43.97], [5.25, 44.5], [5.35, 44.75], [5.25, 45.0]]]]}, "2023-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.97, 46.03], [8.5, 46.25], [8.75, 46.15], [8.82, 46.18], [8.85, 46.25], [8.75, 46.5], [8.97, 47.03], [9.32, 47.18], [9.47, 47.53], [10.0, 47.75], [10.53, 47.53], [10.68, 47.18], [11.03, 47.03], [11.25, 46.5], [11.03, 45.97], [10.63, 45.8], [10.75, 45.5], [10.53, 44.97], [10.0, 44.75], [9.75, 44.85], [9.68, 44.82], [9.53, 44.47], [9.0, 44.25], [8.75, 44.35], [8.5, 44.25], [8.25, 44.35], [8.0, 44.25], [7.47, 44.47], [7.25, 45.0], [7.47, 45.53], [7.82, 45.68], [7.97, 46.03]]]]}, "2023-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.0, 44.25], [7.47, 44.47], [7.25, 45.0], [7.47, 45.53], [8.0, 45.75], [8.25, 45.65], [8.5, 45.75], [9.03, 45.53], [9.25, 45.0], [9.03, 44.47], [8.5, 44.25], [8.25, 44.35], [8.0, 44.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.731074162415553}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.266424487384842}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.957343805406936, 9.892942030668962, 12.160124964389581, 12.496857225242024, 15.093376074129878, 20.88815947274162]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.263052421624479, 19.186152956672117, 20.668039811721826, 21.723479303442616, 20.358863503028545, 20.89005094136479]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.0671121281555997, 4.0859826752092685, 4.403447625759336, 4.520536418588528, 3.828235604362869, 4.287799218478796]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.1075156288232506, 5.239353113256357, 5.73031215681101, 5.731074162415553, 4.515014864881664, 4.399144025215435]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2420625577482503, 1.4673780291798644, 1.5563825759517742, 1.577548689073493, 1.387993896750821, 1.6635246342298773]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2459887293554848, 2.0303003239205997, 2.085636605401757, 2.1331909424423494, 1.5903726089325363, 1.6727306285052217]}}