{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:37.870609", "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-15_to_2010-Sep-18_139.5_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": 2010090000727}, "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 15 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 18 2010"}, "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": 55372.6321902798}, "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": ["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": ["Sea of Okhotsk"]}, "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": 139.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "139.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 135.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 140.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.97, 53.97], [135.75, 54.5], [135.97, 55.03], [136.5, 55.25], [137.03, 55.03], [137.2, 54.63], [137.5, 54.75], [138.03, 54.53], [138.25, 54.0], [138.03, 53.47], [137.5, 53.25], [136.97, 53.47], [136.8, 53.88], [136.5, 53.75], [135.97, 53.97]]]]}, "2010-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.97, 54.53], [135.32, 54.68], [135.47, 55.03], [136.0, 55.25], [136.25, 55.15], [136.5, 55.25], [137.03, 55.03], [137.2, 54.63], [137.5, 54.75], [138.03, 54.53], [138.2, 54.13], [138.32, 54.18], [138.47, 54.53], [139.0, 54.75], [139.25, 54.65], [139.5, 54.75], [139.75, 54.65], [140.0, 54.75], [140.53, 54.53], [140.75, 54.0], [140.63, 53.7], [141.03, 53.53], [141.25, 53.0], [141.03, 52.47], [140.68, 52.32], [140.53, 51.97], [140.0, 51.75], [139.75, 51.85], [139.5, 51.75], [139.25, 51.85], [139.0, 51.75], [138.75, 51.85], [138.5, 51.75], [138.25, 51.85], [138.0, 51.75], [137.75, 51.85], [137.5, 51.75], [137.25, 51.85], [137.0, 51.75], [136.47, 51.97], [136.25, 52.5], [136.35, 52.75], [136.32, 52.82], [136.25, 52.85], [136.0, 52.75], [135.75, 52.85], [135.5, 52.75], [134.97, 52.97], [134.75, 53.5], [134.85, 53.75], [134.75, 54.0], [134.97, 54.53]]]]}, "2010-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.97, 54.53], [135.32, 54.68], [135.47, 55.03], [136.0, 55.25], [136.25, 55.15], [136.5, 55.25], [137.03, 55.03], [137.2, 54.63], [137.5, 54.75], [138.03, 54.53], [138.2, 54.13], [138.32, 54.18], [138.47, 54.53], [139.0, 54.75], [139.25, 54.65], [139.5, 54.75], [139.75, 54.65], [140.0, 54.75], [140.53, 54.53], [140.75, 54.0], [140.63, 53.7], [141.03, 53.53], [141.25, 53.0], [141.03, 52.47], [140.68, 52.32], [140.53, 51.97], [140.0, 51.75], [139.75, 51.85], [139.5, 51.75], [139.25, 51.85], [139.0, 51.75], [138.75, 51.85], [138.5, 51.75], [138.25, 51.85], [138.0, 51.75], [137.75, 51.85], [137.5, 51.75], [137.25, 51.85], [137.0, 51.75], [136.47, 51.97], [136.25, 52.5], [136.35, 52.75], [136.32, 52.82], [136.25, 52.85], [136.0, 52.75], [135.75, 52.85], [135.5, 52.75], [134.97, 52.97], [134.75, 53.5], [134.85, 53.75], [134.75, 54.0], [134.97, 54.53]]]]}, "2010-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.97, 54.53], [135.32, 54.68], [135.47, 55.03], [136.0, 55.25], [136.53, 55.03], [136.68, 54.68], [137.03, 54.53], [137.18, 54.18], [137.53, 54.03], [137.68, 53.68], [137.75, 53.65], [137.82, 53.68], [137.97, 54.03], [138.32, 54.18], [138.47, 54.53], [139.0, 54.75], [139.25, 54.65], [139.5, 54.75], [139.75, 54.65], [140.0, 54.75], [140.53, 54.53], [140.75, 54.0], [140.63, 53.7], [141.03, 53.53], [141.25, 53.0], [141.03, 52.47], [140.68, 52.32], [140.53, 51.97], [140.0, 51.75], [139.75, 51.85], [139.5, 51.75], [139.25, 51.85], [139.0, 51.75], [138.75, 51.85], [138.5, 51.75], [138.25, 51.85], [138.0, 51.75], [137.75, 51.85], [137.5, 51.75], [137.25, 51.85], [137.0, 51.75], [136.47, 51.97], [136.25, 52.5], [136.35, 52.75], [136.32, 52.82], [136.25, 52.85], [136.0, 52.75], [135.75, 52.85], [135.5, 52.75], [134.97, 52.97], [134.75, 53.5], [134.85, 53.75], [134.75, 54.0], [134.97, 54.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.471489780387628}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.0196204748649835}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.654642649497191, 5.024258243243651, 4.895215931895052, 4.813049626067766]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.743734902826134, 1.9571877262356452, 2.5308111808320177, 2.214826153612364]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.164087641912886, -5.293947334782526, -5.096846133568429, -4.7754951215533605]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.836009551690779, -6.211869642042814, -6.103652735359958, -6.471489780387628]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.369474484253634, -1.7015810905742168, -1.6112256331203767, -1.5044351474061741]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5252439599961451, -2.0075103134780634, -1.9727165263200228, -1.999195837250726]}}