{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:58.729632", "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": "2021-Sep-24_to_2021-Sep-29_13.5_46.0"}, "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": 2021090002711}, "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": "September 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 29 2021"}, "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": 70016.93316021425}, "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", "Croatia", "Italy", "Slovenia", "Switzerland"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe", "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": 46.0}, "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": 13.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 9.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[11.97, 45.97], [11.82, 46.32], [11.75, 46.35], [11.68, 46.32], [11.53, 45.97], [11.0, 45.75], [10.75, 45.85], [10.5, 45.75], [10.25, 45.85], [10.0, 45.75], [9.75, 45.85], [9.5, 45.75], [8.97, 45.97], [8.75, 46.5], [8.85, 46.75], [8.75, 47.0], [8.97, 47.53], [9.5, 47.75], [10.0, 47.54], [10.11, 47.59], [10.32, 47.68], [10.47, 48.03], [11.0, 48.25], [11.25, 48.15], [11.5, 48.25], [11.75, 48.15], [12.0, 48.25], [12.25, 48.15], [12.5, 48.25], [13.03, 48.03], [13.18, 47.68], [13.25, 47.65], [13.5, 47.75], [13.75, 47.65], [14.0, 47.75], [14.25, 47.65], [14.5, 47.75], [14.75, 47.65], [15.0, 47.75], [15.25, 47.65], [15.5, 47.75], [16.03, 47.53], [16.25, 47.0], [16.04, 46.5], [16.25, 46.0], [16.03, 45.47], [15.5, 45.25], [15.25, 45.35], [15.18, 45.32], [15.03, 44.97], [14.5, 44.75], [14.25, 44.85], [14.0, 44.75], [13.47, 44.97], [13.32, 45.32], [13.25, 45.35], [13.0, 45.25], [12.47, 45.47], [12.32, 45.82], [11.97, 45.97]]]]}}, "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": {"2021-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.97, 47.03], [10.5, 47.25], [11.03, 47.03], [11.25, 46.5], [11.03, 45.97], [10.5, 45.75], [9.97, 45.97], [9.75, 46.5], [9.97, 47.03]]]]}, "2021-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.75, 47.0], [8.97, 47.53], [9.5, 47.75], [10.0, 47.54], [10.32, 47.68], [10.47, 48.03], [11.0, 48.25], [11.25, 48.15], [11.5, 48.25], [11.75, 48.15], [12.0, 48.25], [12.25, 48.15], [12.5, 48.25], [13.03, 48.03], [13.25, 47.5], [13.15, 47.25], [13.25, 47.0], [13.03, 46.47], [12.5, 46.25], [12.25, 46.35], [12.0, 46.25], [11.75, 46.35], [11.68, 46.32], [11.53, 45.97], [11.0, 45.75], [10.75, 45.85], [10.5, 45.75], [10.25, 45.85], [10.0, 45.75], [9.75, 45.85], [9.5, 45.75], [8.97, 45.97], [8.75, 46.5], [8.85, 46.75], [8.75, 47.0]]]]}, "2021-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.75, 47.0], [8.97, 47.53], [9.5, 47.75], [10.0, 47.54], [10.32, 47.68], [10.47, 48.03], [11.0, 48.25], [11.25, 48.15], [11.5, 48.25], [11.75, 48.15], [12.0, 48.25], [12.25, 48.15], [12.5, 48.25], [13.03, 48.03], [13.18, 47.68], [13.25, 47.65], [13.5, 47.75], [13.75, 47.65], [14.0, 47.75], [14.25, 47.65], [14.5, 47.75], [14.75, 47.65], [15.0, 47.75], [15.25, 47.65], [15.5, 47.75], [16.03, 47.53], [16.25, 47.0], [16.04, 46.5], [16.25, 46.0], [16.03, 45.47], [15.5, 45.25], [15.25, 45.35], [15.18, 45.32], [15.03, 44.97], [14.5, 44.75], [13.97, 44.97], [13.82, 45.32], [13.75, 45.35], [13.5, 45.25], [13.25, 45.35], [13.0, 45.25], [12.47, 45.47], [12.32, 45.82], [11.97, 45.97], [11.82, 46.32], [11.75, 46.35], [11.68, 46.32], [11.53, 45.97], [11.0, 45.75], [10.75, 45.85], [10.5, 45.75], [10.25, 45.85], [10.0, 45.75], [9.75, 45.85], [9.5, 45.75], [8.97, 45.97], [8.75, 46.5], [8.85, 46.75], [8.75, 47.0]]]]}, "2021-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[8.75, 47.0], [8.97, 47.53], [9.5, 47.75], [10.0, 47.54], [10.32, 47.68], [10.47, 48.03], [11.0, 48.25], [11.25, 48.15], [11.5, 48.25], [11.75, 48.15], [12.0, 48.25], [12.25, 48.15], [12.5, 48.25], [13.03, 48.03], [13.18, 47.68], [13.25, 47.65], [13.5, 47.75], [13.75, 47.65], [14.0, 47.75], [14.25, 47.65], [14.5, 47.75], [14.75, 47.65], [15.0, 47.75], [15.25, 47.65], [15.5, 47.75], [16.03, 47.53], [16.25, 47.0], [16.04, 46.5], [16.25, 46.0], [16.03, 45.47], [15.5, 45.25], [15.25, 45.35], [15.18, 45.32], [15.03, 44.97], [14.5, 44.75], [14.25, 44.85], [14.0, 44.75], [13.47, 44.97], [13.32, 45.32], [13.25, 45.35], [13.0, 45.25], [12.47, 45.47], [12.32, 45.82], [11.97, 45.97], [11.82, 46.32], [11.75, 46.35], [11.68, 46.32], [11.53, 45.97], [11.0, 45.75], [10.75, 45.85], [10.5, 45.75], [10.25, 45.85], [10.0, 45.75], [9.75, 45.85], [9.5, 45.75], [8.97, 45.97], [8.75, 46.5], [8.85, 46.75], [8.75, 47.0]]]]}, "2021-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.97, 46.47], [9.75, 47.0], [9.97, 47.53], [10.5, 47.75], [10.75, 47.65], [11.0, 47.75], [11.25, 47.65], [11.5, 47.75], [11.75, 47.65], [12.0, 47.75], [12.25, 47.65], [12.5, 47.75], [12.75, 47.65], [13.0, 47.75], [13.25, 47.65], [13.5, 47.75], [13.75, 47.65], [14.0, 47.75], [14.25, 47.65], [14.5, 47.75], [14.75, 47.65], [15.0, 47.75], [15.25, 47.65], [15.5, 47.75], [16.03, 47.53], [16.25, 47.0], [16.04, 46.5], [16.25, 46.0], [16.03, 45.47], [15.5, 45.25], [15.25, 45.35], [15.18, 45.32], [15.03, 44.97], [14.5, 44.75], [14.25, 44.85], [14.0, 44.75], [13.47, 44.97], [13.32, 45.32], [13.25, 45.35], [13.0, 45.25], [12.47, 45.47], [12.32, 45.82], [11.97, 45.97], [11.82, 46.32], [11.75, 46.35], [11.68, 46.32], [11.53, 45.97], [11.0, 45.75], [10.47, 45.97], [10.32, 46.32], [9.97, 46.47]]]]}, "2021-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.0, 45.25], [12.47, 45.47], [12.25, 46.0], [12.47, 46.53], [13.0, 46.75], [13.25, 46.65], [13.5, 46.75], [13.75, 46.65], [14.0, 46.75], [14.25, 46.65], [14.5, 46.75], [15.03, 46.53], [15.25, 46.0], [15.15, 45.75], [15.25, 45.5], [15.03, 44.97], [14.5, 44.75], [14.25, 44.85], [14.0, 44.75], [13.47, 44.97], [13.32, 45.32], [13.25, 45.35], [13.0, 45.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.952749666379361}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.956010235722865}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.794101285468457, 10.831177132485209, 13.722799717008797, 13.302026248733625, 14.020886952469368, 18.01519699019201]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.794101285468457, 13.913985009630721, 20.129710561037257, 19.69224656001012, 20.297629194741035, 20.403399172115826]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.614231634765588, 4.032096058019497, 4.228412190097391, 3.7929443574310246, 3.880204922915427, 3.5953471278289064]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.614231634765588, 4.913038758504683, 5.952749666379361, 4.449504689872413, 4.676924876672899, 4.140653744253996]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2286663116652914, 1.3162325850938859, 1.524113081410406, 1.3661334211266445, 1.4321911467992123, 1.5204201114295453]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2286663116652914, 1.4954620117668564, 1.885385439165013, 1.7977944520804963, 1.8659983951636343, 1.8411248453221665]}}