{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:00.432095", "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-May-29_to_2015-Jun-01_133.0_58.5"}, "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": 2015050000984}, "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 29 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 01 2015"}, "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": 136357.08858789844}, "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.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": 58.5}, "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": 133.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "133.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 128.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 135.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 55.25}, "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": {"2015-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.47, 55.47], [129.25, 56.0], [129.47, 56.53], [130.0, 56.75], [130.25, 56.65], [130.5, 56.75], [130.75, 56.65], [131.0, 56.75], [131.25, 56.65], [131.5, 56.75], [131.75, 56.65], [132.0, 56.75], [132.25, 56.65], [132.5, 56.75], [132.75, 56.65], [133.0, 56.75], [133.25, 56.65], [133.5, 56.75], [133.75, 56.65], [134.0, 56.75], [134.25, 56.65], [134.5, 56.75], [135.03, 56.53], [135.25, 56.0], [135.03, 55.47], [134.5, 55.25], [134.25, 55.35], [134.0, 55.25], [133.75, 55.35], [133.68, 55.32], [133.53, 54.97], [133.0, 54.75], [132.75, 54.85], [132.5, 54.75], [132.25, 54.85], [132.0, 54.75], [131.75, 54.85], [131.5, 54.75], [131.25, 54.85], [131.0, 54.75], [130.47, 54.97], [130.32, 55.32], [130.25, 55.35], [130.0, 55.25], [129.47, 55.47]]]]}, "2015-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.0, 59.75], [129.25, 59.65], [129.32, 59.68], [129.47, 60.03], [130.0, 60.25], [130.25, 60.15], [130.32, 60.18], [130.47, 60.53], [131.0, 60.75], [131.25, 60.65], [131.5, 60.75], [131.75, 60.65], [132.0, 60.75], [132.25, 60.65], [132.5, 60.75], [133.03, 60.53], [133.18, 60.18], [133.53, 60.03], [133.68, 59.68], [133.75, 59.65], [134.0, 59.75], [134.25, 59.65], [134.5, 59.75], [135.03, 59.53], [135.18, 59.18], [135.25, 59.15], [135.5, 59.25], [136.03, 59.03], [136.25, 58.5], [136.03, 57.97], [135.68, 57.82], [135.65, 57.75], [135.68, 57.68], [136.03, 57.53], [136.25, 57.0], [136.03, 56.47], [135.5, 56.25], [135.25, 56.35], [135.13, 56.3], [135.25, 56.0], [135.03, 55.47], [134.5, 55.25], [134.25, 55.35], [134.0, 55.25], [133.75, 55.35], [133.68, 55.32], [133.53, 54.97], [133.0, 54.75], [132.75, 54.85], [132.5, 54.75], [132.25, 54.85], [132.0, 54.75], [131.75, 54.85], [131.5, 54.75], [131.25, 54.85], [131.0, 54.75], [130.47, 54.97], [130.32, 55.32], [130.25, 55.35], [130.0, 55.25], [129.47, 55.47], [129.25, 56.0], [129.47, 56.53], [130.0, 56.75], [129.75, 56.85], [129.5, 56.75], [128.97, 56.97], [128.75, 57.5], [128.85, 57.75], [128.82, 57.82], [128.75, 57.85], [128.5, 57.75], [127.97, 57.97], [127.75, 58.5], [127.97, 59.03], [128.32, 59.18], [128.47, 59.53], [129.0, 59.75]], [[130.25, 56.65], [130.32, 56.68], [130.35, 56.75], [130.32, 56.82], [130.25, 56.85], [130.0, 56.75], [130.25, 56.65]], [[134.32, 56.82], [133.97, 56.97], [133.82, 57.32], [133.75, 57.35], [133.68, 57.32], [133.65, 57.25], [133.75, 57.0], [133.63, 56.7], [133.75, 56.65], [134.0, 56.75], [134.25, 56.65], [134.38, 56.7], [134.32, 56.82]]]]}, "2015-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.0, 59.75], [129.25, 59.65], [129.32, 59.68], [129.47, 60.03], [130.0, 60.25], [130.25, 60.15], [130.32, 60.18], [130.47, 60.53], [131.0, 60.75], [131.25, 60.65], [131.5, 60.75], [131.75, 60.65], [132.0, 60.75], [132.25, 60.65], [132.5, 60.75], [133.03, 60.53], [133.18, 60.18], [133.53, 60.03], [133.68, 59.68], [133.75, 59.65], [134.0, 59.75], [134.25, 59.65], [134.5, 59.75], [135.03, 59.53], [135.18, 59.18], [135.25, 59.15], [135.5, 59.25], [136.03, 59.03], [136.25, 58.5], [136.03, 57.97], [135.68, 57.82], [135.65, 57.75], [135.68, 57.68], [136.03, 57.53], [136.25, 57.0], [136.03, 56.47], [135.5, 56.25], [135.25, 56.35], [135.13, 56.3], [135.25, 56.0], [135.03, 55.47], [134.5, 55.25], [134.25, 55.35], [134.0, 55.25], [133.75, 55.35], [133.68, 55.32], [133.53, 54.97], [133.0, 54.75], [132.75, 54.85], [132.5, 54.75], [132.25, 54.85], [132.0, 54.75], [131.75, 54.85], [131.5, 54.75], [131.25, 54.85], [131.0, 54.75], [130.47, 54.97], [130.32, 55.32], [130.25, 55.35], [130.0, 55.25], [129.47, 55.47], [129.25, 56.0], [129.47, 56.53], [130.0, 56.75], [129.75, 56.85], [129.5, 56.75], [128.97, 56.97], [128.75, 57.5], [128.85, 57.75], [128.82, 57.82], [128.75, 57.85], [128.5, 57.75], [127.97, 57.97], [127.75, 58.5], [127.97, 59.03], [128.32, 59.18], [128.47, 59.53], [129.0, 59.75]], [[130.25, 56.65], [130.32, 56.68], [130.35, 56.75], [130.32, 56.82], [130.25, 56.85], [130.0, 56.75], [130.25, 56.65]], [[134.32, 56.82], [133.97, 56.97], [133.82, 57.32], [133.75, 57.35], [133.68, 57.32], [133.65, 57.25], [133.75, 57.0], [133.63, 56.7], [133.75, 56.65], [134.0, 56.75], [134.25, 56.65], [134.38, 56.7], [134.32, 56.82]]]]}, "2015-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.0, 59.75], [129.25, 59.65], [129.32, 59.68], [129.47, 60.03], [130.0, 60.25], [130.25, 60.15], [130.32, 60.18], [130.47, 60.53], [131.0, 60.75], [131.25, 60.65], [131.5, 60.75], [131.75, 60.65], [132.0, 60.75], [132.25, 60.65], [132.5, 60.75], [133.03, 60.53], [133.18, 60.18], [133.53, 60.03], [133.68, 59.68], [133.75, 59.65], [134.0, 59.75], [134.25, 59.65], [134.5, 59.75], [135.03, 59.53], [135.18, 59.18], [135.25, 59.15], [135.5, 59.25], [136.03, 59.03], [136.25, 58.5], [136.03, 57.97], [135.68, 57.82], [135.65, 57.75], [135.68, 57.68], [136.03, 57.53], [136.25, 57.0], [136.03, 56.47], [135.5, 56.25], [135.25, 56.35], [135.13, 56.3], [135.25, 56.0], [135.03, 55.47], [134.5, 55.25], [133.97, 55.47], [133.75, 56.0], [133.97, 56.53], [134.38, 56.7], [134.32, 56.82], [133.97, 56.97], [133.82, 57.32], [133.75, 57.35], [133.68, 57.32], [133.65, 57.25], [133.75, 57.0], [133.53, 56.47], [133.0, 56.25], [133.53, 56.03], [133.75, 55.5], [133.53, 54.97], [133.0, 54.75], [132.5, 54.96], [132.0, 54.75], [131.75, 54.85], [131.5, 54.75], [131.25, 54.85], [131.0, 54.75], [130.47, 54.97], [130.32, 55.32], [129.97, 55.47], [129.75, 56.0], [129.97, 56.53], [130.32, 56.68], [130.35, 56.75], [130.32, 56.82], [130.25, 56.85], [130.0, 56.75], [129.75, 56.85], [129.5, 56.75], [128.97, 56.97], [128.75, 57.5], [128.85, 57.75], [128.82, 57.82], [128.75, 57.85], [128.5, 57.75], [127.97, 57.97], [127.75, 58.5], [127.97, 59.03], [128.32, 59.18], [128.47, 59.53], [129.0, 59.75]], [[132.75, 56.35], [132.63, 56.3], [132.7, 56.13], [133.0, 56.25], [132.75, 56.35]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.816588702323088}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.519380018249348}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.9420289512330555, 3.027220820664809, 3.2475312876518956, 4.980575692791604]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.7094353209310498, -0.19534552524777382, -0.9541146200248249, -0.8388533432683403]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.4255169613779195, -6.853066878001897, -7.023264655885477, -5.811240172513493]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.092212127865366, -8.816588702323088, -8.681625050987293, -7.139237768980763]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4127386365841983, -1.8485292021285784, -1.8660671247163976, -1.5438346836639694]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.605796273372145, -2.5048939890714785, -2.397864152336692, -1.8539971313661556]}}