{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:43.015198", "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": "2019-May-26_to_2019-May-29_128.5_48.0"}, "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": 2019050000711}, "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": "May 26 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 29 2019"}, "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": 82983.79812443754}, "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": ["China", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia", "Russian-Far-East"]}, "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": 48.0}, "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": 128.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "128.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 126.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 131.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.47, 47.53], [126.82, 47.68], [126.97, 48.03], [127.32, 48.18], [127.47, 48.53], [128.0, 48.75], [128.25, 48.65], [128.5, 48.75], [129.03, 48.53], [129.25, 48.0], [129.15, 47.75], [129.25, 47.5], [129.03, 46.97], [128.68, 46.82], [128.53, 46.47], [128.18, 46.32], [128.03, 45.97], [127.5, 45.75], [127.25, 45.85], [127.0, 45.75], [126.47, 45.97], [126.25, 46.5], [126.35, 46.75], [126.25, 47.0], [126.47, 47.53]]]]}, "2019-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.47, 47.53], [126.82, 47.68], [126.97, 48.03], [127.32, 48.18], [127.47, 48.53], [127.82, 48.68], [127.97, 49.03], [128.32, 49.18], [128.47, 49.53], [129.0, 49.75], [129.25, 49.65], [129.5, 49.75], [129.75, 49.65], [129.82, 49.68], [129.97, 50.03], [130.5, 50.25], [130.75, 50.15], [131.0, 50.25], [131.53, 50.03], [131.75, 49.5], [131.65, 49.25], [131.68, 49.18], [132.03, 49.03], [132.25, 48.5], [132.03, 47.97], [131.68, 47.82], [131.65, 47.75], [131.75, 47.5], [131.65, 47.25], [131.75, 47.0], [131.53, 46.47], [131.18, 46.32], [131.03, 45.97], [130.68, 45.82], [130.53, 45.47], [130.0, 45.25], [129.47, 45.47], [129.25, 46.0], [129.35, 46.25], [129.25, 46.5], [129.35, 46.75], [129.32, 46.82], [129.25, 46.85], [129.0, 46.75], [128.75, 46.85], [128.68, 46.82], [128.53, 46.47], [128.18, 46.32], [128.03, 45.97], [127.5, 45.75], [127.25, 45.85], [127.0, 45.75], [126.47, 45.97], [126.25, 46.5], [126.35, 46.75], [126.25, 47.0], [126.47, 47.53]]]]}, "2019-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.47, 47.53], [126.82, 47.68], [126.97, 48.03], [127.32, 48.18], [127.47, 48.53], [127.82, 48.68], [127.97, 49.03], [128.32, 49.18], [128.47, 49.53], [129.0, 49.75], [129.25, 49.65], [129.5, 49.75], [129.75, 49.65], [129.82, 49.68], [129.97, 50.03], [130.5, 50.25], [130.75, 50.15], [131.0, 50.25], [131.53, 50.03], [131.75, 49.5], [131.65, 49.25], [131.68, 49.18], [132.03, 49.03], [132.25, 48.5], [132.03, 47.97], [131.68, 47.82], [131.65, 47.75], [131.75, 47.5], [131.65, 47.25], [131.75, 47.0], [131.53, 46.47], [131.18, 46.32], [131.03, 45.97], [130.68, 45.82], [130.53, 45.47], [130.0, 45.25], [129.47, 45.47], [129.25, 46.0], [129.35, 46.25], [129.25, 46.5], [129.35, 46.75], [129.32, 46.82], [129.25, 46.85], [129.0, 46.75], [128.75, 46.85], [128.68, 46.82], [128.53, 46.47], [128.18, 46.32], [128.03, 45.97], [127.5, 45.75], [127.25, 45.85], [127.0, 45.75], [126.47, 45.97], [126.25, 46.5], [126.35, 46.75], [126.25, 47.0], [126.47, 47.53]]]]}, "2019-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.97, 49.03], [128.32, 49.18], [128.47, 49.53], [129.0, 49.75], [129.25, 49.65], [129.5, 49.75], [129.75, 49.65], [129.82, 49.68], [129.97, 50.03], [130.5, 50.25], [130.75, 50.15], [131.0, 50.25], [131.53, 50.03], [131.75, 49.5], [131.65, 49.25], [131.68, 49.18], [132.03, 49.03], [132.25, 48.5], [132.03, 47.97], [131.68, 47.82], [131.65, 47.75], [131.75, 47.5], [131.65, 47.25], [131.75, 47.0], [131.53, 46.47], [131.18, 46.32], [131.03, 45.97], [130.68, 45.82], [130.53, 45.47], [130.0, 45.25], [129.47, 45.47], [129.25, 46.0], [129.35, 46.25], [129.25, 46.5], [129.35, 46.75], [129.32, 46.82], [129.25, 46.85], [129.0, 46.75], [128.47, 46.97], [128.32, 47.32], [127.97, 47.47], [127.75, 48.0], [127.85, 48.25], [127.75, 48.5], [127.97, 49.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.688623198392918}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.904268150634565}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.856533479535642, 9.43861531581041, 8.356397139582668, 8.989945304396997]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.28044595384307, 7.3233774302970005, 5.556038497423401, 7.290431032080903]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.466690706941057, -5.3206934809916415, -6.582903027807812, -5.922763832432061]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.153641726431431, -6.135511539475658, -7.688623198392918, -6.997997320743082]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4891221437836557, -1.5293285695444792, -1.8809838156659702, -1.651008917315866]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.672882881065158, -1.7512771768914728, -2.2122019377676727, -2.0123696733392746]}}