{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:38.376744", "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-Oct-03_to_2019-Oct-07_144.5_60.0"}, "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": 2019100000203}, "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": "October 03 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 07 2019"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 71609.32140040313}, "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": 60.0}, "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": 144.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "144.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 138.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 145.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.47, 60.03], [138.82, 60.18], [138.97, 60.53], [139.5, 60.75], [139.75, 60.65], [140.0, 60.75], [140.25, 60.65], [140.5, 60.75], [141.03, 60.53], [141.25, 60.0], [141.15, 59.75], [141.25, 59.5], [141.07, 59.07], [141.5, 59.25], [142.03, 59.03], [142.18, 58.68], [142.25, 58.65], [142.5, 58.75], [142.75, 58.65], [143.0, 58.75], [143.25, 58.65], [143.5, 58.75], [143.75, 58.65], [144.0, 58.75], [144.53, 58.53], [144.75, 58.0], [144.65, 57.75], [144.75, 57.5], [144.53, 56.97], [144.0, 56.75], [143.75, 56.85], [143.5, 56.75], [143.25, 56.85], [143.0, 56.75], [142.75, 56.85], [142.5, 56.75], [142.25, 56.85], [142.0, 56.75], [141.75, 56.85], [141.5, 56.75], [140.97, 56.97], [140.82, 57.32], [140.47, 57.47], [140.25, 58.0], [140.43, 58.43], [140.0, 58.25], [139.75, 58.35], [139.5, 58.25], [138.97, 58.47], [138.82, 58.82], [138.47, 58.97], [138.25, 59.5], [138.47, 60.03]], [[140.57, 58.57], [140.82, 58.68], [140.93, 58.93], [140.68, 58.82], [140.57, 58.57]]], [[[142.75, 60.0], [142.97, 60.53], [143.5, 60.75], [143.75, 60.65], [144.0, 60.75], [144.25, 60.65], [144.5, 60.75], [145.03, 60.53], [145.25, 60.0], [145.03, 59.47], [144.5, 59.25], [144.25, 59.35], [144.0, 59.25], [143.75, 59.35], [143.5, 59.25], [142.97, 59.47], [142.75, 60.0]]]]}, "2019-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.25, 59.5], [138.47, 60.03], [138.82, 60.18], [138.97, 60.53], [139.5, 60.75], [139.75, 60.65], [140.0, 60.75], [140.25, 60.65], [140.5, 60.75], [140.75, 60.65], [141.0, 60.75], [141.25, 60.65], [141.5, 60.75], [141.75, 60.65], [142.0, 60.75], [142.25, 60.65], [142.5, 60.75], [142.75, 60.65], [143.0, 60.75], [143.25, 60.65], [143.5, 60.75], [143.75, 60.65], [144.0, 60.75], [144.25, 60.65], [144.5, 60.75], [145.03, 60.53], [145.18, 60.18], [145.53, 60.03], [145.75, 59.5], [145.53, 58.97], [145.0, 58.75], [144.75, 58.85], [144.5, 58.75], [144.25, 58.85], [144.0, 58.75], [144.53, 58.53], [144.75, 58.0], [144.65, 57.75], [144.75, 57.5], [144.53, 56.97], [144.0, 56.75], [143.75, 56.85], [143.5, 56.75], [143.25, 56.85], [143.0, 56.75], [142.75, 56.85], [142.5, 56.75], [142.25, 56.85], [142.0, 56.75], [141.75, 56.85], [141.5, 56.75], [140.97, 56.97], [140.82, 57.32], [140.47, 57.47], [140.25, 58.0], [140.35, 58.25], [140.32, 58.32], [140.25, 58.35], [140.0, 58.25], [139.75, 58.35], [139.5, 58.25], [138.97, 58.47], [138.82, 58.82], [138.47, 58.97], [138.25, 59.5]], [[143.75, 58.85], [143.5, 58.75], [143.75, 58.65], [144.0, 58.75], [143.75, 58.85]], [[143.25, 58.85], [143.0, 58.75], [143.25, 58.65], [143.5, 58.75], [143.25, 58.85]], [[142.75, 58.85], [142.68, 58.82], [142.63, 58.7], [142.75, 58.65], [143.0, 58.75], [142.75, 58.85]]]]}, "2019-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.25, 59.5], [138.47, 60.03], [138.82, 60.18], [138.97, 60.53], [139.5, 60.75], [139.75, 60.65], [140.0, 60.75], [140.25, 60.65], [140.5, 60.75], [140.75, 60.65], [141.0, 60.75], [141.25, 60.65], [141.5, 60.75], [141.75, 60.65], [142.0, 60.75], [142.25, 60.65], [142.5, 60.75], [142.75, 60.65], [143.0, 60.75], [143.25, 60.65], [143.5, 60.75], [143.75, 60.65], [144.0, 60.75], [144.25, 60.65], [144.5, 60.75], [145.03, 60.53], [145.18, 60.18], [145.53, 60.03], [145.75, 59.5], [145.53, 58.97], [145.0, 58.75], [144.75, 58.85], [144.5, 58.75], [144.25, 58.85], [144.0, 58.75], [144.53, 58.53], [144.75, 58.0], [144.65, 57.75], [144.75, 57.5], [144.53, 56.97], [144.0, 56.75], [143.75, 56.85], [143.5, 56.75], [143.25, 56.85], [143.0, 56.75], [142.75, 56.85], [142.5, 56.75], [142.25, 56.85], [142.0, 56.75], [141.75, 56.85], [141.5, 56.75], [140.97, 56.97], [140.82, 57.32], [140.47, 57.47], [140.25, 58.0], [140.35, 58.25], [140.32, 58.32], [140.25, 58.35], [140.0, 58.25], [139.75, 58.35], [139.5, 58.25], [138.97, 58.47], [138.82, 58.82], [138.47, 58.97], [138.25, 59.5]], [[143.75, 58.85], [143.5, 58.75], [143.75, 58.65], [144.0, 58.75], [143.75, 58.85]], [[143.25, 58.85], [143.0, 58.75], [143.25, 58.65], [143.5, 58.75], [143.25, 58.85]], [[142.75, 58.85], [142.68, 58.82], [142.63, 58.7], [142.75, 58.65], [143.0, 58.75], [142.75, 58.85]]]]}, "2019-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.47, 60.03], [140.0, 60.25], [140.25, 60.15], [140.32, 60.18], [140.47, 60.53], [141.0, 60.75], [141.25, 60.65], [141.5, 60.75], [141.75, 60.65], [142.0, 60.75], [142.25, 60.65], [142.5, 60.75], [142.75, 60.65], [143.0, 60.75], [143.25, 60.65], [143.5, 60.75], [143.75, 60.65], [144.0, 60.75], [144.25, 60.65], [144.5, 60.75], [145.03, 60.53], [145.18, 60.18], [145.53, 60.03], [145.75, 59.5], [145.53, 58.97], [145.0, 58.75], [144.75, 58.85], [144.5, 58.75], [144.25, 58.85], [144.0, 58.75], [143.75, 58.85], [143.5, 58.75], [143.25, 58.85], [143.0, 58.75], [142.75, 58.85], [142.68, 58.82], [142.53, 58.47], [142.0, 58.25], [141.75, 58.35], [141.68, 58.32], [141.53, 57.97], [141.0, 57.75], [140.47, 57.97], [140.32, 58.32], [140.25, 58.35], [140.0, 58.25], [139.47, 58.47], [139.25, 59.0], [139.35, 59.25], [139.25, 59.5], [139.47, 60.03]]]]}, "2019-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.0, 60.75], [144.25, 60.65], [144.5, 60.75], [145.03, 60.53], [145.25, 60.0], [145.15, 59.75], [145.25, 59.5], [145.03, 58.97], [144.5, 58.75], [144.25, 58.85], [144.0, 58.75], [143.75, 58.85], [143.5, 58.75], [142.97, 58.97], [142.75, 59.5], [142.97, 60.03], [143.32, 60.18], [143.47, 60.53], [144.0, 60.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.265030268909356}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.311830986427623}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.5780659169817568, -2.232257757355626, -2.8415604513700714, -5.211139895923623, -4.59633013161158]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-6.645195279756308, -7.692421116066214, -9.850530317153641, -12.414828093580127, -8.870977787976358]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.605866987485587, -4.223299415534505, -4.42489596138657, -5.008272497113382, -4.279835590904895]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.9163813069257, -6.475209636977411, -8.158329014600668, -10.265030268909356, -6.30796821035932]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6473718771382857, -1.8782778719148125, -1.9176540982155668, -1.9794285813437105, -1.5246172483816776]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.606925038666707, -2.3122952916446304, -2.6427453457874837, -3.095908732111198, -1.8094383009380939]}}