{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:15.889123", "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": "2011-Dec-25_to_2011-Dec-29_10.0_59.0"}, "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": 2011120002716}, "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 25 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 29 2011"}, "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": 290746.99755391903}, "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": ["Denmark", "Germany", "Norway", "Sweden"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": ["Kattegat", "North Sea", "Skagerrak"]}, "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": 59.0}, "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": 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": 7.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.75, 58.0], [6.97, 58.53], [7.32, 58.68], [7.35, 58.75], [7.25, 59.0], [7.35, 59.25], [7.25, 59.5], [7.47, 60.03], [8.0, 60.25], [8.25, 60.15], [8.32, 60.18], [8.46, 60.5], [8.25, 61.0], [8.47, 61.53], [9.0, 61.75], [9.25, 61.65], [9.5, 61.75], [10.03, 61.53], [10.2, 61.13], [10.32, 61.18], [10.47, 61.53], [11.0, 61.75], [11.25, 61.65], [11.5, 61.75], [11.75, 61.65], [12.0, 61.75], [12.25, 61.65], [12.5, 61.75], [12.75, 61.65], [12.82, 61.68], [12.97, 62.03], [13.5, 62.25], [13.75, 62.15], [14.0, 62.25], [14.25, 62.15], [14.5, 62.25], [14.75, 62.15], [14.82, 62.18], [14.97, 62.53], [15.5, 62.75], [15.75, 62.65], [16.0, 62.75], [16.53, 62.53], [16.68, 62.18], [17.03, 62.03], [17.25, 61.5], [17.15, 61.25], [17.25, 61.0], [17.15, 60.75], [17.18, 60.68], [17.25, 60.65], [17.5, 60.75], [18.03, 60.53], [18.25, 60.0], [18.15, 59.75], [18.25, 59.5], [18.03, 58.97], [17.68, 58.82], [17.53, 58.47], [17.18, 58.32], [17.03, 57.97], [16.5, 57.75], [16.25, 57.85], [16.18, 57.82], [16.03, 57.47], [15.5, 57.25], [15.25, 57.35], [15.18, 57.32], [15.15, 57.25], [15.25, 57.0], [15.03, 56.47], [14.68, 56.32], [14.53, 55.97], [14.0, 55.75], [13.75, 55.85], [13.68, 55.82], [13.53, 55.47], [13.0, 55.25], [12.75, 55.35], [12.68, 55.32], [12.53, 54.97], [12.0, 54.75], [11.75, 54.85], [11.5, 54.75], [11.25, 54.85], [11.18, 54.82], [11.03, 54.47], [10.5, 54.25], [10.25, 54.35], [10.18, 54.32], [10.03, 53.97], [9.5, 53.75], [9.25, 53.85], [9.0, 53.75], [8.47, 53.97], [8.32, 54.32], [8.25, 54.35], [8.0, 54.25], [7.47, 54.47], [7.25, 55.0], [7.35, 55.25], [7.25, 55.5], [7.35, 55.75], [7.25, 56.0], [7.35, 56.25], [7.25, 56.5], [7.35, 56.75], [7.25, 57.0], [7.35, 57.25], [7.32, 57.32], [6.97, 57.47], [6.75, 58.0]], [[8.65, 56.25], [8.75, 56.0], [8.65, 55.75], [8.68, 55.68], [9.03, 55.53], [9.18, 55.18], [9.25, 55.15], [9.32, 55.18], [9.47, 55.53], [9.88, 55.7], [9.82, 55.82], [9.75, 55.85], [9.5, 55.75], [8.97, 55.97], [8.8, 56.38], [8.68, 56.32], [8.65, 56.25]]]]}, "2011-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.75, 58.0], [6.97, 58.53], [7.32, 58.68], [7.35, 58.75], [7.25, 59.0], [7.35, 59.25], [7.25, 59.5], [7.47, 60.03], [8.0, 60.25], [8.25, 60.15], [8.32, 60.18], [8.46, 60.5], [8.25, 61.0], [8.47, 61.53], [9.0, 61.75], [9.25, 61.65], [9.5, 61.75], [10.03, 61.53], [10.2, 61.13], [10.32, 61.18], [10.47, 61.53], [11.0, 61.75], [11.25, 61.65], [11.5, 61.75], [11.75, 61.65], [12.0, 61.75], [12.25, 61.65], [12.5, 61.75], [12.75, 61.65], [12.82, 61.68], [12.97, 62.03], [13.5, 62.25], [13.75, 62.15], [14.0, 62.25], [14.25, 62.15], [14.5, 62.25], [14.75, 62.15], [14.82, 62.18], [14.97, 62.53], [15.5, 62.75], [15.75, 62.65], [16.0, 62.75], [16.53, 62.53], [16.68, 62.18], [17.03, 62.03], [17.25, 61.5], [17.15, 61.25], [17.25, 61.0], [17.15, 60.75], [17.18, 60.68], [17.25, 60.65], [17.5, 60.75], [18.03, 60.53], [18.25, 60.0], [18.15, 59.75], [18.25, 59.5], [18.03, 58.97], [17.68, 58.82], [17.53, 58.47], [17.18, 58.32], [17.03, 57.97], [16.5, 57.75], [16.25, 57.85], [16.18, 57.82], [16.03, 57.47], [15.5, 57.25], [15.25, 57.35], [15.18, 57.32], [15.15, 57.25], [15.25, 57.0], [15.03, 56.47], [14.68, 56.32], [14.53, 55.97], [14.0, 55.75], [13.75, 55.85], [13.68, 55.82], [13.53, 55.47], [13.0, 55.25], [12.75, 55.35], [12.68, 55.32], [12.53, 54.97], [12.0, 54.75], [11.75, 54.85], [11.5, 54.75], [11.25, 54.85], [11.18, 54.82], [11.03, 54.47], [10.5, 54.25], [10.25, 54.35], [10.18, 54.32], [10.03, 53.97], [9.5, 53.75], [9.25, 53.85], [9.0, 53.75], [8.47, 53.97], [8.32, 54.32], [8.25, 54.35], [8.0, 54.25], [7.47, 54.47], [7.25, 55.0], [7.35, 55.25], [7.25, 55.5], [7.35, 55.75], [7.25, 56.0], [7.35, 56.25], [7.25, 56.5], [7.35, 56.75], [7.25, 57.0], [7.35, 57.25], [7.32, 57.32], [6.97, 57.47], [6.75, 58.0]], [[8.65, 56.25], [8.75, 56.0], [8.65, 55.75], [8.68, 55.68], [9.03, 55.53], [9.18, 55.18], [9.25, 55.15], [9.32, 55.18], [9.47, 55.53], [9.88, 55.7], [9.82, 55.82], [9.75, 55.85], [9.5, 55.75], [8.97, 55.97], [8.8, 56.38], [8.68, 56.32], [8.65, 56.25]]]]}, "2011-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.75, 58.0], [6.97, 58.53], [7.32, 58.68], [7.35, 58.75], [7.25, 59.0], [7.35, 59.25], [7.25, 59.5], [7.47, 60.03], [8.0, 60.25], [8.25, 60.15], [8.32, 60.18], [8.46, 60.5], [8.25, 61.0], [8.47, 61.53], [9.0, 61.75], [9.25, 61.65], [9.5, 61.75], [10.03, 61.53], [10.2, 61.13], [10.32, 61.18], [10.47, 61.53], [11.0, 61.75], [11.25, 61.65], [11.5, 61.75], [11.75, 61.65], [12.0, 61.75], [12.25, 61.65], [12.5, 61.75], [12.75, 61.65], [12.82, 61.68], [12.97, 62.03], [13.5, 62.25], [13.75, 62.15], [14.0, 62.25], [14.25, 62.15], [14.5, 62.25], [14.75, 62.15], [14.82, 62.18], [14.97, 62.53], [15.5, 62.75], [15.75, 62.65], [16.0, 62.75], [16.53, 62.53], [16.68, 62.18], [17.03, 62.03], [17.25, 61.5], [17.15, 61.25], [17.25, 61.0], [17.15, 60.75], [17.18, 60.68], [17.25, 60.65], [17.5, 60.75], [18.03, 60.53], [18.25, 60.0], [18.15, 59.75], [18.25, 59.5], [18.03, 58.97], [17.68, 58.82], [17.53, 58.47], [17.18, 58.32], [17.03, 57.97], [16.5, 57.75], [16.25, 57.85], [16.18, 57.82], [16.03, 57.47], [15.5, 57.25], [15.25, 57.35], [15.18, 57.32], [15.15, 57.25], [15.25, 57.0], [15.03, 56.47], [14.68, 56.32], [14.53, 55.97], [14.0, 55.75], [13.75, 55.85], [13.68, 55.82], [13.53, 55.47], [13.0, 55.25], [12.75, 55.35], [12.68, 55.32], [12.53, 54.97], [12.0, 54.75], [11.75, 54.85], [11.5, 54.75], [11.25, 54.85], [11.18, 54.82], [11.03, 54.47], [10.5, 54.25], [10.25, 54.35], [10.18, 54.32], [10.03, 53.97], [9.5, 53.75], [9.25, 53.85], [9.0, 53.75], [8.47, 53.97], [8.32, 54.32], [8.25, 54.35], [8.0, 54.25], [7.47, 54.47], [7.25, 55.0], [7.35, 55.25], [7.25, 55.5], [7.35, 55.75], [7.25, 56.0], [7.35, 56.25], [7.25, 56.5], [7.35, 56.75], [7.25, 57.0], [7.35, 57.25], [7.32, 57.32], [6.97, 57.47], [6.75, 58.0]], [[8.65, 56.25], [8.75, 56.0], [8.65, 55.75], [8.68, 55.68], [9.03, 55.53], [9.18, 55.18], [9.25, 55.15], [9.32, 55.18], [9.47, 55.53], [9.88, 55.7], [9.82, 55.82], [9.75, 55.85], [9.5, 55.75], [8.97, 55.97], [8.8, 56.38], [8.68, 56.32], [8.65, 56.25]]]]}, "2011-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.5, 59.75], [9.75, 59.65], [9.82, 59.68], [9.97, 60.03], [10.5, 60.25], [11.03, 60.03], [11.18, 59.68], [11.53, 59.53], [11.75, 59.0], [11.53, 58.47], [11.0, 58.25], [10.75, 58.35], [10.5, 58.25], [10.25, 58.35], [10.18, 58.32], [10.03, 57.97], [9.5, 57.75], [9.25, 57.85], [9.0, 57.75], [8.47, 57.97], [8.25, 58.5], [8.47, 59.03], [8.82, 59.18], [8.97, 59.53], [9.5, 59.75]]]]}, "2011-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.5, 59.75], [9.75, 59.65], [10.0, 59.75], [10.53, 59.53], [10.75, 59.0], [10.53, 58.47], [10.0, 58.25], [9.75, 58.35], [9.68, 58.32], [9.53, 57.97], [9.0, 57.75], [8.47, 57.97], [8.25, 58.5], [8.47, 59.03], [8.82, 59.18], [8.97, 59.53], [9.5, 59.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.016907220593339}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.316860400538213}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [5.596551391542164, 7.52494720448118, 5.654347862515635, 6.097929972212114, 5.873269636219391]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.077136615557151, 9.97708339412037, 8.073363170785171, 6.878454272310307, 6.20399735906301]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.763168064433882, 8.563922905455874, 6.739925833529414, 5.204761843751141, 5.220142390835709]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.815108328407575, 12.016907220593339, 9.404458965033484, 7.128090935914884, 5.4648239140664145]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3594265619333155, 1.7586613547282446, 1.399954396521782, 1.209840341836093, 1.2056800998813595]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6244689173668758, 2.011522590800186, 1.7816630648904923, 1.2460984900778254, 1.2356566517215284]}}