{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:36.663838", "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": "2010-Sep-08_to_2010-Sep-10_44.0_47.0"}, "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": 2010090000433}, "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 08 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 10 2010"}, "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": 63692.92589114677}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 47.0}, "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": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 46.25}, "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": 47.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 47.0], [40.47, 47.53], [41.0, 47.75], [41.25, 47.65], [41.5, 47.75], [41.75, 47.65], [42.0, 47.75], [42.25, 47.65], [42.5, 47.75], [42.75, 47.65], [42.82, 47.68], [42.97, 48.03], [43.5, 48.25], [43.75, 48.15], [44.0, 48.25], [44.25, 48.15], [44.5, 48.25], [45.03, 48.03], [45.18, 47.68], [45.25, 47.65], [45.5, 47.75], [46.03, 47.53], [46.18, 47.18], [46.53, 47.03], [46.75, 46.5], [46.53, 45.97], [46.0, 45.75], [45.75, 45.85], [45.68, 45.82], [45.53, 45.47], [45.18, 45.32], [45.03, 44.97], [44.5, 44.75], [44.25, 44.85], [44.0, 44.75], [43.47, 44.97], [43.32, 45.32], [43.25, 45.35], [43.0, 45.25], [42.47, 45.47], [42.32, 45.82], [42.25, 45.85], [42.0, 45.75], [41.75, 45.85], [41.5, 45.75], [40.97, 45.97], [40.82, 46.32], [40.47, 46.47], [40.25, 47.0]]]]}, "2010-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 47.0], [40.47, 47.53], [41.0, 47.75], [41.25, 47.65], [41.5, 47.75], [41.75, 47.65], [42.0, 47.75], [42.25, 47.65], [42.5, 47.75], [42.75, 47.65], [42.82, 47.68], [42.97, 48.03], [43.5, 48.25], [43.75, 48.15], [44.0, 48.25], [44.25, 48.15], [44.5, 48.25], [45.03, 48.03], [45.18, 47.68], [45.25, 47.65], [45.5, 47.75], [46.03, 47.53], [46.18, 47.18], [46.53, 47.03], [46.75, 46.5], [46.53, 45.97], [46.0, 45.75], [45.75, 45.85], [45.68, 45.82], [45.53, 45.47], [45.18, 45.32], [45.03, 44.97], [44.5, 44.75], [44.25, 44.85], [44.0, 44.75], [43.47, 44.97], [43.32, 45.32], [43.25, 45.35], [43.0, 45.25], [42.47, 45.47], [42.32, 45.82], [42.25, 45.85], [42.0, 45.75], [41.75, 45.85], [41.5, 45.75], [40.97, 45.97], [40.82, 46.32], [40.47, 46.47], [40.25, 47.0]]]]}, "2010-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 47.0], [40.47, 47.53], [41.0, 47.75], [41.25, 47.65], [41.5, 47.75], [41.75, 47.65], [42.0, 47.75], [42.25, 47.65], [42.5, 47.75], [42.75, 47.65], [42.82, 47.68], [42.97, 48.03], [43.5, 48.25], [43.75, 48.15], [44.0, 48.25], [44.25, 48.15], [44.5, 48.25], [45.03, 48.03], [45.18, 47.68], [45.25, 47.65], [45.5, 47.75], [46.03, 47.53], [46.18, 47.18], [46.53, 47.03], [46.75, 46.5], [46.53, 45.97], [46.0, 45.75], [45.75, 45.85], [45.68, 45.82], [45.53, 45.47], [45.18, 45.32], [45.03, 44.97], [44.5, 44.75], [44.25, 44.85], [44.0, 44.75], [43.47, 44.97], [43.32, 45.32], [43.25, 45.35], [43.0, 45.25], [42.47, 45.47], [42.32, 45.82], [42.25, 45.85], [42.0, 45.75], [41.75, 45.85], [41.5, 45.75], [40.97, 45.97], [40.82, 46.32], [40.47, 46.47], [40.25, 47.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.000544475784238}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.520577502584499}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.628345140905537, 11.580153592849683, 13.963080699067461]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.059333588638879, 9.517914937464582, 13.222412215213069]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.845756685555838, -7.648063947374505, -5.067911874823155]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.764251146127378, -9.000544475784238, -5.941816921851853]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9786022576621887, -2.3173269024804637, -1.6175599560979248]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.442448774031064, -2.6110316207747646, -2.001376010767029]}}