{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:41.235429", "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": "2017-Aug-22_to_2017-Aug-24_30.5_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": 2017080000680}, "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": "August 22 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 24 2017"}, "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": 62939.152938564504}, "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": ["Moldova", "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": ["Black Sea"]}, "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": 30.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "30.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 28.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 33.75}, "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": 49.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, 44.97], [28.25, 45.5], [28.47, 46.03], [29.0, 46.25], [29.25, 46.15], [29.32, 46.18], [29.35, 46.25], [29.32, 46.32], [28.97, 46.47], [28.75, 47.0], [28.97, 47.53], [29.32, 47.68], [29.35, 47.75], [29.25, 48.0], [29.35, 48.25], [29.25, 48.5], [29.35, 48.75], [29.25, 49.0], [29.47, 49.53], [30.0, 49.75], [30.5, 49.54], [31.0, 49.75], [31.53, 49.53], [31.75, 49.0], [31.65, 48.75], [31.75, 48.5], [31.65, 48.25], [31.75, 48.0], [31.65, 47.75], [31.68, 47.68], [31.75, 47.65], [31.82, 47.68], [31.97, 48.03], [32.5, 48.25], [32.75, 48.15], [33.0, 48.25], [33.53, 48.03], [33.68, 47.68], [34.03, 47.53], [34.25, 47.0], [34.03, 46.47], [33.68, 46.32], [33.53, 45.97], [33.0, 45.75], [32.75, 45.85], [32.5, 45.75], [31.97, 45.97], [31.82, 46.32], [31.75, 46.35], [31.68, 46.32], [31.53, 45.97], [31.0, 45.75], [30.75, 45.85], [30.68, 45.82], [30.53, 45.47], [30.18, 45.32], [30.03, 44.97], [29.5, 44.75], [29.25, 44.85], [29.0, 44.75], [28.47, 44.97]]]]}, "2017-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, 44.97], [28.25, 45.5], [28.47, 46.03], [29.0, 46.25], [29.25, 46.15], [29.32, 46.18], [29.35, 46.25], [29.32, 46.32], [28.97, 46.47], [28.75, 47.0], [28.97, 47.53], [29.32, 47.68], [29.35, 47.75], [29.25, 48.0], [29.35, 48.25], [29.25, 48.5], [29.35, 48.75], [29.25, 49.0], [29.47, 49.53], [30.0, 49.75], [30.5, 49.54], [31.0, 49.75], [31.53, 49.53], [31.75, 49.0], [31.65, 48.75], [31.75, 48.5], [31.65, 48.25], [31.75, 48.0], [31.65, 47.75], [31.68, 47.68], [31.75, 47.65], [31.82, 47.68], [31.97, 48.03], [32.5, 48.25], [32.75, 48.15], [33.0, 48.25], [33.53, 48.03], [33.68, 47.68], [34.03, 47.53], [34.25, 47.0], [34.03, 46.47], [33.68, 46.32], [33.53, 45.97], [33.0, 45.75], [32.75, 45.85], [32.5, 45.75], [31.97, 45.97], [31.82, 46.32], [31.75, 46.35], [31.68, 46.32], [31.53, 45.97], [31.0, 45.75], [30.75, 45.85], [30.68, 45.82], [30.53, 45.47], [30.18, 45.32], [30.03, 44.97], [29.5, 44.75], [29.25, 44.85], [29.0, 44.75], [28.47, 44.97]]]]}, "2017-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.47, 44.97], [28.25, 45.5], [28.47, 46.03], [29.0, 46.25], [29.25, 46.15], [29.32, 46.18], [29.35, 46.25], [29.32, 46.32], [28.97, 46.47], [28.75, 47.0], [28.97, 47.53], [29.32, 47.68], [29.35, 47.75], [29.25, 48.0], [29.35, 48.25], [29.25, 48.5], [29.35, 48.75], [29.25, 49.0], [29.47, 49.53], [30.0, 49.75], [30.5, 49.54], [31.0, 49.75], [31.53, 49.53], [31.75, 49.0], [31.65, 48.75], [31.75, 48.5], [31.65, 48.25], [31.75, 48.0], [31.65, 47.75], [31.68, 47.68], [31.75, 47.65], [31.82, 47.68], [31.97, 48.03], [32.5, 48.25], [32.75, 48.15], [33.0, 48.25], [33.53, 48.03], [33.68, 47.68], [34.03, 47.53], [34.25, 47.0], [34.03, 46.47], [33.68, 46.32], [33.53, 45.97], [33.0, 45.75], [32.75, 45.85], [32.5, 45.75], [31.97, 45.97], [31.82, 46.32], [31.75, 46.35], [31.68, 46.32], [31.53, 45.97], [31.0, 45.75], [30.75, 45.85], [30.68, 45.82], [30.53, 45.47], [30.18, 45.32], [30.03, 44.97], [29.5, 44.75], [29.25, 44.85], [29.0, 44.75], [28.47, 44.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.124540267766179}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.600789114652357}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.49572699390734, 17.0339870123197, 17.659995503311336]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.608065982101664, 14.01161789881803, 15.36668909162023]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.730733414238017, -4.940628154123294, -4.131005775595758]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.124540267766179, -5.569550408978671, -4.752280450228]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.581587178065797, -1.6541481083567056, -1.388981115047731]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9915385577207847, -1.913916131694672, -1.6761192817825816]}}