{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:58.236537", "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-Jul-29_to_2011-Aug-01_13.0_51.5"}, "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": 2011070001581}, "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": "July 29 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 01 2011"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 376669.11276858667}, "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", "Czech Republic", "Germany", "Hungary", "Poland", "Romania", "Slovakia", "Ukraine"]}, "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": []}, "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": 51.5}, "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": 13.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 7.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 25.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.5, 47.25], [22.03, 47.03], [22.18, 46.68], [22.53, 46.53], [22.75, 46.0], [22.65, 45.75], [22.75, 45.5], [22.53, 44.97], [22.0, 44.75], [21.47, 44.97], [21.32, 45.32], [20.97, 45.47], [20.75, 46.0], [20.85, 46.25], [20.75, 46.5], [20.97, 47.03], [21.5, 47.25]]], [[[10.97, 53.03], [11.5, 53.25], [11.75, 53.15], [12.0, 53.25], [12.25, 53.15], [12.5, 53.25], [12.75, 53.15], [13.0, 53.25], [13.25, 53.15], [13.5, 53.25], [14.03, 53.03], [14.18, 52.68], [14.25, 52.65], [14.5, 52.75], [14.75, 52.65], [15.0, 52.75], [15.25, 52.65], [15.5, 52.75], [15.75, 52.65], [16.0, 52.75], [16.25, 52.65], [16.5, 52.75], [17.03, 52.53], [17.25, 52.0], [17.03, 51.47], [16.68, 51.32], [16.53, 50.97], [16.0, 50.75], [15.75, 50.85], [15.5, 50.75], [15.25, 50.85], [15.0, 50.75], [14.75, 50.85], [14.5, 50.75], [14.25, 50.85], [14.0, 50.75], [13.75, 50.85], [13.5, 50.75], [13.25, 50.85], [13.0, 50.75], [12.47, 50.97], [12.32, 51.32], [12.25, 51.35], [12.0, 51.25], [11.47, 51.47], [11.32, 51.82], [10.97, 51.97], [10.75, 52.5], [10.97, 53.03]]]]}, "2011-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.25, 49.5], [7.47, 50.03], [8.0, 50.25], [8.25, 50.15], [8.5, 50.25], [9.03, 50.03], [9.18, 49.68], [9.25, 49.65], [9.5, 49.75], [9.75, 49.65], [10.0, 49.75], [10.25, 49.65], [10.32, 49.68], [10.47, 50.03], [11.0, 50.25], [11.43, 50.07], [11.32, 50.32], [10.97, 50.47], [10.75, 51.0], [10.85, 51.25], [10.75, 51.5], [10.96, 52.0], [10.75, 52.5], [10.97, 53.03], [11.5, 53.25], [11.75, 53.15], [12.0, 53.25], [12.25, 53.15], [12.5, 53.25], [12.75, 53.15], [13.0, 53.25], [13.25, 53.15], [13.5, 53.25], [14.03, 53.03], [14.18, 52.68], [14.25, 52.65], [14.5, 52.75], [14.75, 52.65], [15.0, 52.75], [15.25, 52.65], [15.5, 52.75], [15.75, 52.65], [16.0, 52.75], [16.25, 52.65], [16.5, 52.75], [17.03, 52.53], [17.25, 52.0], [17.13, 51.7], [17.25, 51.65], [17.5, 51.75], [18.03, 51.53], [18.18, 51.18], [18.53, 51.03], [18.68, 50.68], [18.75, 50.65], [19.0, 50.75], [19.53, 50.53], [19.75, 50.0], [19.65, 49.75], [19.75, 49.5], [19.53, 48.97], [19.18, 48.82], [19.15, 48.75], [19.18, 48.68], [19.53, 48.53], [19.68, 48.18], [19.75, 48.15], [20.0, 48.25], [20.25, 48.15], [20.32, 48.18], [20.47, 48.53], [21.0, 48.75], [21.25, 48.65], [21.32, 48.68], [21.47, 49.03], [22.0, 49.25], [22.25, 49.15], [22.5, 49.25], [23.03, 49.03], [23.18, 48.68], [23.53, 48.53], [23.68, 48.18], [23.75, 48.15], [24.0, 48.25], [24.53, 48.03], [24.68, 47.68], [24.75, 47.65], [25.0, 47.75], [25.53, 47.53], [25.68, 47.18], [26.03, 47.03], [26.25, 46.5], [26.03, 45.97], [25.68, 45.82], [25.53, 45.47], [25.0, 45.25], [24.75, 45.35], [24.5, 45.25], [24.25, 45.35], [24.18, 45.32], [24.03, 44.97], [23.5, 44.75], [23.25, 44.85], [23.0, 44.75], [22.75, 44.85], [22.5, 44.75], [22.25, 44.85], [22.0, 44.75], [21.47, 44.97], [21.32, 45.32], [20.97, 45.47], [20.82, 45.82], [20.47, 45.97], [20.32, 46.32], [20.0, 46.46], [19.5, 46.25], [19.25, 46.35], [19.0, 46.25], [18.75, 46.35], [18.5, 46.25], [17.97, 46.47], [17.82, 46.82], [17.75, 46.85], [17.5, 46.75], [16.97, 46.97], [16.82, 47.32], [16.75, 47.35], [16.5, 47.25], [16.25, 47.35], [16.0, 47.25], [15.75, 47.35], [15.5, 47.25], [15.25, 47.35], [15.0, 47.25], [14.47, 47.47], [14.32, 47.82], [13.97, 47.97], [13.82, 48.32], [13.75, 48.35], [13.5, 48.25], [13.25, 48.35], [13.18, 48.32], [13.03, 47.97], [12.68, 47.82], [12.53, 47.47], [12.0, 47.25], [11.75, 47.35], [11.5, 47.25], [11.25, 47.35], [11.0, 47.25], [10.75, 47.35], [10.5, 47.25], [10.25, 47.35], [10.0, 47.25], [9.75, 47.35], [9.5, 47.25], [8.97, 47.47], [8.82, 47.82], [8.47, 47.97], [8.32, 48.32], [7.97, 48.47], [7.82, 48.82], [7.47, 48.97], [7.25, 49.5]], [[23.85, 46.75], [23.82, 46.82], [23.75, 46.85], [23.68, 46.82], [23.65, 46.75], [23.68, 46.68], [23.75, 46.65], [23.82, 46.68], [23.85, 46.75]]]]}, "2011-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.25, 49.5], [7.47, 50.03], [8.0, 50.25], [8.25, 50.15], [8.5, 50.25], [9.03, 50.03], [9.18, 49.68], [9.25, 49.65], [9.5, 49.75], [9.75, 49.65], [10.0, 49.75], [10.25, 49.65], [10.32, 49.68], [10.47, 50.03], [11.0, 50.25], [11.43, 50.07], [11.32, 50.32], [10.97, 50.47], [10.75, 51.0], [10.85, 51.25], [10.75, 51.5], [10.96, 52.0], [10.75, 52.5], [10.97, 53.03], [11.5, 53.25], [11.75, 53.15], [12.0, 53.25], [12.25, 53.15], [12.5, 53.25], [12.75, 53.15], [13.0, 53.25], [13.25, 53.15], [13.5, 53.25], [14.03, 53.03], [14.18, 52.68], [14.25, 52.65], [14.5, 52.75], [14.75, 52.65], [15.0, 52.75], [15.25, 52.65], [15.5, 52.75], [15.75, 52.65], [16.0, 52.75], [16.25, 52.65], [16.5, 52.75], [17.03, 52.53], [17.25, 52.0], [17.13, 51.7], [17.25, 51.65], [17.5, 51.75], [18.03, 51.53], [18.18, 51.18], [18.53, 51.03], [18.68, 50.68], [18.75, 50.65], [19.0, 50.75], [19.53, 50.53], [19.75, 50.0], [19.65, 49.75], [19.75, 49.5], [19.53, 48.97], [19.18, 48.82], [19.15, 48.75], [19.18, 48.68], [19.53, 48.53], [19.68, 48.18], [19.75, 48.15], [20.0, 48.25], [20.25, 48.15], [20.32, 48.18], [20.47, 48.53], [21.0, 48.75], [21.25, 48.65], [21.32, 48.68], [21.47, 49.03], [22.0, 49.25], [22.25, 49.15], [22.5, 49.25], [23.03, 49.03], [23.18, 48.68], [23.53, 48.53], [23.68, 48.18], [23.75, 48.15], [24.0, 48.25], [24.53, 48.03], [24.68, 47.68], [24.75, 47.65], [25.0, 47.75], [25.53, 47.53], [25.68, 47.18], [26.03, 47.03], [26.25, 46.5], [26.03, 45.97], [25.68, 45.82], [25.53, 45.47], [25.0, 45.25], [24.75, 45.35], [24.5, 45.25], [24.25, 45.35], [24.18, 45.32], [24.03, 44.97], [23.5, 44.75], [23.25, 44.85], [23.0, 44.75], [22.75, 44.85], [22.5, 44.75], [22.25, 44.85], [22.0, 44.75], [21.47, 44.97], [21.32, 45.32], [20.97, 45.47], [20.82, 45.82], [20.47, 45.97], [20.32, 46.32], [20.0, 46.46], [19.5, 46.25], [19.25, 46.35], [19.0, 46.25], [18.75, 46.35], [18.5, 46.25], [17.97, 46.47], [17.82, 46.82], [17.75, 46.85], [17.5, 46.75], [16.97, 46.97], [16.82, 47.32], [16.75, 47.35], [16.5, 47.25], [16.25, 47.35], [16.0, 47.25], [15.75, 47.35], [15.5, 47.25], [15.25, 47.35], [15.0, 47.25], [14.47, 47.47], [14.32, 47.82], [13.97, 47.97], [13.82, 48.32], [13.75, 48.35], [13.5, 48.25], [13.25, 48.35], [13.18, 48.32], [13.03, 47.97], [12.68, 47.82], [12.53, 47.47], [12.0, 47.25], [11.75, 47.35], [11.5, 47.25], [11.25, 47.35], [11.0, 47.25], [10.75, 47.35], [10.5, 47.25], [10.25, 47.35], [10.0, 47.25], [9.75, 47.35], [9.5, 47.25], [8.97, 47.47], [8.82, 47.82], [8.47, 47.97], [8.32, 48.32], [7.97, 48.47], [7.82, 48.82], [7.47, 48.97], [7.25, 49.5]], [[23.85, 46.75], [23.82, 46.82], [23.75, 46.85], [23.68, 46.82], [23.65, 46.75], [23.68, 46.68], [23.75, 46.65], [23.82, 46.68], [23.85, 46.75]]]]}, "2011-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.25, 49.5], [7.47, 50.03], [8.0, 50.25], [8.25, 50.15], [8.5, 50.25], [9.03, 50.03], [9.18, 49.68], [9.25, 49.65], [9.5, 49.75], [9.75, 49.65], [10.0, 49.75], [10.25, 49.65], [10.32, 49.68], [10.47, 50.03], [11.0, 50.25], [11.43, 50.07], [11.32, 50.32], [10.97, 50.47], [10.75, 51.0], [10.85, 51.25], [10.75, 51.5], [10.97, 52.03], [11.5, 52.25], [11.75, 52.15], [12.0, 52.25], [12.25, 52.15], [12.5, 52.25], [12.75, 52.15], [13.0, 52.25], [13.53, 52.03], [13.68, 51.68], [13.75, 51.65], [14.0, 51.75], [14.25, 51.65], [14.5, 51.75], [14.75, 51.65], [15.0, 51.75], [15.25, 51.65], [15.5, 51.75], [15.75, 51.65], [16.0, 51.75], [16.25, 51.65], [16.5, 51.75], [16.75, 51.65], [17.0, 51.75], [17.25, 51.65], [17.5, 51.75], [18.03, 51.53], [18.18, 51.18], [18.53, 51.03], [18.68, 50.68], [18.75, 50.65], [19.0, 50.75], [19.53, 50.53], [19.75, 50.0], [19.65, 49.75], [19.75, 49.5], [19.53, 48.97], [19.18, 48.82], [19.15, 48.75], [19.18, 48.68], [19.53, 48.53], [19.68, 48.18], [19.75, 48.15], [20.0, 48.25], [20.25, 48.15], [20.32, 48.18], [20.47, 48.53], [21.0, 48.75], [21.25, 48.65], [21.32, 48.68], [21.47, 49.03], [22.0, 49.25], [22.25, 49.15], [22.5, 49.25], [23.03, 49.03], [23.18, 48.68], [23.53, 48.53], [23.68, 48.18], [23.75, 48.15], [24.0, 48.25], [24.53, 48.03], [24.68, 47.68], [24.75, 47.65], [25.0, 47.75], [25.53, 47.53], [25.68, 47.18], [26.03, 47.03], [26.25, 46.5], [26.03, 45.97], [25.68, 45.82], [25.53, 45.47], [25.0, 45.25], [24.75, 45.35], [24.5, 45.25], [24.25, 45.35], [24.18, 45.32], [24.03, 44.97], [23.5, 44.75], [23.25, 44.85], [23.0, 44.75], [22.75, 44.85], [22.5, 44.75], [22.25, 44.85], [22.0, 44.75], [21.47, 44.97], [21.32, 45.32], [20.97, 45.47], [20.82, 45.82], [20.47, 45.97], [20.32, 46.32], [20.0, 46.46], [19.5, 46.25], [19.25, 46.35], [19.0, 46.25], [18.75, 46.35], [18.5, 46.25], [17.97, 46.47], [17.82, 46.82], [17.75, 46.85], [17.5, 46.75], [16.97, 46.97], [16.82, 47.32], [16.75, 47.35], [16.5, 47.25], [16.25, 47.35], [16.0, 47.25], [15.75, 47.35], [15.5, 47.25], [15.25, 47.35], [15.0, 47.25], [14.47, 47.47], [14.32, 47.82], [13.97, 47.97], [13.82, 48.32], [13.75, 48.35], [13.5, 48.25], [13.25, 48.35], [13.18, 48.32], [13.03, 47.97], [12.68, 47.82], [12.53, 47.47], [12.0, 47.25], [11.75, 47.35], [11.5, 47.25], [11.25, 47.35], [11.0, 47.25], [10.75, 47.35], [10.5, 47.25], [10.25, 47.35], [10.0, 47.25], [9.75, 47.35], [9.5, 47.25], [8.97, 47.47], [8.82, 47.82], [8.47, 47.97], [8.32, 48.32], [7.97, 48.47], [7.82, 48.82], [7.47, 48.97], [7.25, 49.5]], [[23.85, 46.75], [23.82, 46.82], [23.75, 46.85], [23.68, 46.82], [23.65, 46.75], [23.68, 46.68], [23.75, 46.65], [23.82, 46.68], [23.85, 46.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.698557287655262}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.216239660987452}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.69132365537024, 15.11806079128246, 14.635271977542743, 16.28231916451125]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.362866333815589, 10.370249930085777, 10.057083523726135, 13.102646816207994]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.191794456778656, -5.3588621641472995, -5.930930567321665, -4.253665607311897]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.299622719440322, -7.426131902564123, -7.698557287655262, -5.386360152563839]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5811579845004622, -1.8261999588926559, -2.0545815880964042, -1.4844374724622327]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8803053381183585, -2.3373011002838697, -2.544576109854306, -1.7858888622294604]}}