{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:25.260771", "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-Jul-17_to_2015-Jul-19_48.5_53.5"}, "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": 2015070000812}, "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 17 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 19 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": 96127.12733362528}, "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": 53.5}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 52.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.82, 56.18], [46.97, 56.53], [47.5, 56.75], [47.75, 56.65], 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"MultiPolygon", "coordinates": [[[[46.82, 56.18], [46.97, 56.53], [47.5, 56.75], [47.75, 56.65], [47.82, 56.68], [47.97, 57.03], [48.32, 57.18], [48.47, 57.53], [49.0, 57.75], [49.53, 57.53], [49.75, 57.0], [49.65, 56.75], [49.68, 56.68], [50.03, 56.53], [50.25, 56.0], [50.15, 55.75], [50.18, 55.68], [50.25, 55.65], [50.5, 55.75], [50.75, 55.65], [50.82, 55.68], [50.97, 56.03], [51.5, 56.25], [51.75, 56.15], [52.0, 56.25], [52.53, 56.03], [52.68, 55.68], [53.03, 55.53], [53.25, 55.0], [53.03, 54.47], [52.68, 54.32], [52.53, 53.97], [52.0, 53.75], [51.75, 53.85], [51.68, 53.82], [51.53, 53.47], [51.18, 53.32], [51.03, 52.97], [50.5, 52.75], [50.25, 52.85], [50.0, 52.75], [49.47, 52.97], [49.32, 53.32], [49.25, 53.35], [49.18, 53.32], [49.03, 52.97], [48.5, 52.75], [48.25, 52.85], [48.0, 52.75], [47.75, 52.85], [47.5, 52.75], [47.25, 52.85], [47.0, 52.75], [46.47, 52.97], [46.25, 53.5], [46.35, 53.75], [46.25, 54.0], [46.38, 54.3], [45.97, 54.47], [45.75, 55.0], [45.97, 55.53], [46.32, 55.68], [46.47, 56.03], [46.82, 56.18]]]]}, "2015-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.82, 56.18], [46.97, 56.53], [47.5, 56.75], [47.75, 56.65], [47.82, 56.68], [47.97, 57.03], [48.32, 57.18], [48.47, 57.53], [49.0, 57.75], [49.53, 57.53], [49.75, 57.0], [49.65, 56.75], [49.68, 56.68], [50.03, 56.53], [50.25, 56.0], [50.15, 55.75], [50.18, 55.68], [50.25, 55.65], [50.5, 55.75], [50.75, 55.65], [50.82, 55.68], [50.97, 56.03], [51.5, 56.25], [51.75, 56.15], [52.0, 56.25], [52.53, 56.03], [52.68, 55.68], [53.03, 55.53], [53.25, 55.0], [53.03, 54.47], [52.68, 54.32], [52.53, 53.97], [52.0, 53.75], [51.75, 53.85], [51.68, 53.82], [51.53, 53.47], [51.18, 53.32], [51.03, 52.97], [50.5, 52.75], [50.25, 52.85], [50.0, 52.75], [49.47, 52.97], [49.32, 53.32], [49.25, 53.35], [49.18, 53.32], [49.03, 52.97], [48.5, 52.75], [48.25, 52.85], [48.0, 52.75], [47.75, 52.85], [47.5, 52.75], [47.25, 52.85], [47.0, 52.75], [46.47, 52.97], [46.25, 53.5], [46.35, 53.75], 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maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.841383207172669, -5.5852471415628315, -5.59960308649255]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5534433554616796, -1.528343961609855, -1.486754308744733]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.843252551443996, -1.7440054076511917, -1.7121301473332549]}}