{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:10.060169", "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": "2015-Jun-19_to_2015-Jun-21_18.0_50.0"}, "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": 2015060000724}, "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": "June 19 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 21 2015"}, "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": "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": 95322.48592066951}, "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", "Poland", "Slovakia"]}, "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": 50.0}, "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": 18.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 13.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 22.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.0, 50.25], [14.25, 50.15], [14.5, 50.25], [14.75, 50.15], [15.0, 50.25], [15.25, 50.15], [15.32, 50.18], [15.47, 50.53], [15.82, 50.68], [15.97, 51.03], [16.32, 51.18], [16.35, 51.25], [16.25, 51.5], [16.47, 52.03], [17.0, 52.25], [17.25, 52.15], [17.5, 52.25], [17.75, 52.15], [18.0, 52.25], [18.25, 52.15], [18.5, 52.25], [19.03, 52.03], [19.25, 51.5], [19.15, 51.25], [19.25, 51.0], [19.15, 50.75], [19.18, 50.68], [19.25, 50.65], [19.5, 50.75], [19.75, 50.65], [19.82, 50.68], [19.97, 51.03], [20.5, 51.25], [21.0, 51.04], [21.5, 51.25], [21.75, 51.15], [22.0, 51.25], [22.53, 51.03], [22.75, 50.5], [22.65, 50.25], [22.75, 50.0], [22.53, 49.47], [22.18, 49.32], [22.03, 48.97], [21.5, 48.75], [21.25, 48.85], [21.0, 48.75], [20.75, 48.85], [20.5, 48.75], [20.25, 48.85], [20.0, 48.75], [19.75, 48.85], [19.5, 48.75], [19.25, 48.85], [19.0, 48.75], [18.75, 48.85], [18.5, 48.75], [17.97, 48.97], [17.82, 49.32], [17.75, 49.35], [17.5, 49.25], [17.25, 49.35], [17.18, 49.32], [17.03, 48.97], [16.5, 48.75], [16.25, 48.85], [16.18, 48.82], [16.03, 48.47], [15.68, 48.32], [15.53, 47.97], [15.0, 47.75], [14.47, 47.97], [14.32, 48.32], [14.25, 48.35], [14.0, 48.25], [13.75, 48.35], [13.5, 48.25], [12.97, 48.47], [12.75, 49.0], [12.97, 49.53], [13.32, 49.68], [13.47, 50.03], [14.0, 50.25]]]]}, "2015-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.0, 50.25], [14.25, 50.15], [14.5, 50.25], [14.75, 50.15], [15.0, 50.25], [15.25, 50.15], [15.32, 50.18], [15.47, 50.53], [15.82, 50.68], [15.97, 51.03], [16.32, 51.18], [16.35, 51.25], [16.25, 51.5], [16.47, 52.03], [17.0, 52.25], [17.25, 52.15], [17.5, 52.25], [17.75, 52.15], [18.0, 52.25], [18.25, 52.15], [18.5, 52.25], [19.03, 52.03], [19.25, 51.5], [19.15, 51.25], [19.25, 51.0], [19.15, 50.75], [19.18, 50.68], [19.25, 50.65], [19.5, 50.75], [19.75, 50.65], [19.82, 50.68], [19.97, 51.03], [20.5, 51.25], [21.0, 51.04], [21.5, 51.25], [21.75, 51.15], [22.0, 51.25], [22.53, 51.03], [22.75, 50.5], [22.65, 50.25], [22.75, 50.0], [22.53, 49.47], [22.18, 49.32], [22.03, 48.97], [21.5, 48.75], [21.25, 48.85], [21.0, 48.75], [20.75, 48.85], [20.5, 48.75], [20.25, 48.85], [20.0, 48.75], [19.75, 48.85], [19.5, 48.75], [19.25, 48.85], [19.0, 48.75], [18.75, 48.85], [18.5, 48.75], [17.97, 48.97], [17.82, 49.32], [17.75, 49.35], [17.5, 49.25], [17.25, 49.35], [17.18, 49.32], [17.03, 48.97], [16.5, 48.75], [16.25, 48.85], [16.18, 48.82], [16.03, 48.47], [15.68, 48.32], [15.53, 47.97], [15.0, 47.75], [14.47, 47.97], [14.32, 48.32], [14.25, 48.35], [14.0, 48.25], [13.75, 48.35], [13.5, 48.25], [12.97, 48.47], [12.75, 49.0], [12.97, 49.53], [13.32, 49.68], [13.47, 50.03], [14.0, 50.25]]]]}, "2015-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.0, 50.25], [14.25, 50.15], [14.5, 50.25], [14.75, 50.15], [15.0, 50.25], [15.25, 50.15], [15.32, 50.18], [15.47, 50.53], [15.82, 50.68], [15.97, 51.03], [16.32, 51.18], [16.35, 51.25], [16.25, 51.5], [16.47, 52.03], [17.0, 52.25], [17.25, 52.15], [17.5, 52.25], [17.75, 52.15], [18.0, 52.25], [18.25, 52.15], [18.5, 52.25], [19.03, 52.03], [19.25, 51.5], [19.15, 51.25], [19.25, 51.0], [19.15, 50.75], [19.18, 50.68], [19.25, 50.65], [19.5, 50.75], [19.75, 50.65], [19.82, 50.68], [19.97, 51.03], [20.5, 51.25], [21.0, 51.04], [21.5, 51.25], [21.75, 51.15], [22.0, 51.25], [22.53, 51.03], [22.75, 50.5], [22.65, 50.25], [22.75, 50.0], [22.53, 49.47], [22.18, 49.32], [22.03, 48.97], [21.5, 48.75], [21.25, 48.85], [21.0, 48.75], [20.75, 48.85], [20.5, 48.75], [20.25, 48.85], [20.0, 48.75], [19.75, 48.85], [19.5, 48.75], [19.25, 48.85], [19.0, 48.75], [18.75, 48.85], [18.5, 48.75], [17.97, 48.97], [17.82, 49.32], [17.75, 49.35], [17.5, 49.25], [17.25, 49.35], [17.18, 49.32], [17.03, 48.97], [16.5, 48.75], [16.25, 48.85], [16.18, 48.82], [16.03, 48.47], [15.68, 48.32], [15.53, 47.97], [15.0, 47.75], [14.47, 47.97], [14.32, 48.32], [14.25, 48.35], [14.0, 48.25], [13.75, 48.35], [13.5, 48.25], [12.97, 48.47], [12.75, 49.0], [12.97, 49.53], [13.32, 49.68], [13.47, 50.03], [14.0, 50.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.865585681682376}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.080886650000683}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.313583757439858, 11.321776446434967, 11.97844963788117]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.856949507940783, 8.385913859832158, 9.234683330850714]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.578067935971487, -5.6201224561618055, -5.044469557868758]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.3161077810665915, -6.865585681682376, -5.740946279801278]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3786324830727077, -1.6191450751666814, -1.4410722799667883]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5207718369499965, -1.831119512058863, -1.6475080565471765]}}