{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:39.612407", "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-25_to_2010-Sep-27_108.0_48.5"}, "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": 2010090001118}, "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 25 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 27 2010"}, "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": 104883.32262615731}, "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": ["Mongolia", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia"]}, "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": 48.5}, "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": 108.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "108.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 106.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 114.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.47, 47.97], [106.25, 48.5], [106.47, 49.03], [107.0, 49.25], [107.25, 49.15], [107.32, 49.18], [107.35, 49.25], [107.25, 49.5], [107.47, 50.03], [108.0, 50.25], [108.53, 50.03], [108.68, 49.68], [108.75, 49.65], [108.82, 49.68], [108.96, 50.0], [108.75, 50.5], [108.97, 51.03], [109.32, 51.18], [109.47, 51.53], [110.0, 51.75], [110.53, 51.53], [110.68, 51.18], [110.75, 51.15], [110.82, 51.18], [110.97, 51.53], [111.5, 51.75], [112.03, 51.53], [112.18, 51.18], [112.25, 51.15], [112.32, 51.18], [112.47, 51.53], [113.0, 51.75], [113.53, 51.53], [113.75, 51.0], [113.63, 50.7], [113.75, 50.65], [114.0, 50.75], [114.53, 50.53], [114.75, 50.0], [114.53, 49.47], [114.18, 49.32], [114.15, 49.25], [114.25, 49.0], [114.03, 48.47], [113.5, 48.25], [113.25, 48.35], [113.18, 48.32], [113.03, 47.97], [112.68, 47.82], [112.53, 47.47], [112.18, 47.32], [112.15, 47.25], [112.25, 47.0], [112.03, 46.47], [111.5, 46.25], [111.25, 46.35], [111.0, 46.25], [110.75, 46.35], [110.5, 46.25], [109.97, 46.47], [109.82, 46.82], [109.47, 46.97], [109.25, 47.5], [109.38, 47.8], [109.0, 47.96], [108.5, 47.75], [108.25, 47.85], [108.0, 47.75], [107.75, 47.85], [107.5, 47.75], [107.25, 47.85], [107.0, 47.75], [106.47, 47.97]], [[111.47, 48.53], [111.82, 48.68], [111.85, 48.75], [111.8, 48.88], [111.5, 48.75], [111.25, 48.85], [111.18, 48.82], [111.03, 48.47], [110.68, 48.32], [110.63, 48.2], [110.75, 48.15], [111.0, 48.25], [111.25, 48.15], [111.32, 48.18], [111.47, 48.53]]]]}, "2010-09-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.47, 47.97], [106.25, 48.5], [106.47, 49.03], [107.0, 49.25], [107.25, 49.15], [107.32, 49.18], [107.35, 49.25], [107.25, 49.5], [107.47, 50.03], [108.0, 50.25], [108.53, 50.03], [108.68, 49.68], [108.75, 49.65], [108.82, 49.68], [108.96, 50.0], [108.75, 50.5], [108.97, 51.03], [109.32, 51.18], [109.47, 51.53], [110.0, 51.75], [110.53, 51.53], [110.68, 51.18], [110.75, 51.15], [110.82, 51.18], [110.97, 51.53], [111.5, 51.75], [112.03, 51.53], [112.18, 51.18], [112.25, 51.15], [112.32, 51.18], [112.47, 51.53], [113.0, 51.75], [113.53, 51.53], [113.75, 51.0], [113.63, 50.7], [113.75, 50.65], [114.0, 50.75], [114.53, 50.53], [114.75, 50.0], [114.53, 49.47], [114.18, 49.32], [114.15, 49.25], [114.25, 49.0], [114.03, 48.47], [113.5, 48.25], [113.25, 48.35], [113.18, 48.32], [113.03, 47.97], [112.68, 47.82], [112.53, 47.47], [112.18, 47.32], [112.15, 47.25], [112.25, 47.0], [112.03, 46.47], [111.5, 46.25], [111.25, 46.35], [111.0, 46.25], [110.75, 46.35], [110.5, 46.25], [109.97, 46.47], [109.82, 46.82], [109.47, 46.97], [109.25, 47.5], [109.38, 47.8], [109.0, 47.96], [108.5, 47.75], [108.25, 47.85], [108.0, 47.75], [107.75, 47.85], [107.5, 47.75], [107.25, 47.85], [107.0, 47.75], [106.47, 47.97]], [[111.47, 48.53], [111.82, 48.68], [111.85, 48.75], [111.8, 48.88], [111.5, 48.75], [111.25, 48.85], [111.18, 48.82], [111.03, 48.47], [110.68, 48.32], [110.63, 48.2], [110.75, 48.15], [111.0, 48.25], [111.25, 48.15], [111.32, 48.18], [111.47, 48.53]]]]}, "2010-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.47, 47.97], [106.25, 48.5], [106.47, 49.03], [107.0, 49.25], [107.25, 49.15], [107.32, 49.18], [107.35, 49.25], [107.25, 49.5], [107.47, 50.03], [108.0, 50.25], [108.53, 50.03], [108.68, 49.68], [108.75, 49.65], [108.82, 49.68], [108.96, 50.0], [108.75, 50.5], [108.97, 51.03], [109.32, 51.18], [109.47, 51.53], [110.0, 51.75], [110.53, 51.53], [110.68, 51.18], [110.75, 51.15], [110.82, 51.18], [110.97, 51.53], [111.5, 51.75], [112.03, 51.53], [112.18, 51.18], [112.25, 51.15], [112.32, 51.18], [112.47, 51.53], [113.0, 51.75], [113.53, 51.53], [113.75, 51.0], [113.63, 50.7], [113.75, 50.65], [114.0, 50.75], [114.53, 50.53], [114.75, 50.0], [114.53, 49.47], [114.18, 49.32], [114.15, 49.25], [114.25, 49.0], [114.03, 48.47], [113.5, 48.25], [113.25, 48.35], [113.18, 48.32], [113.03, 47.97], [112.68, 47.82], [112.53, 47.47], [112.18, 47.32], [112.15, 47.25], [112.25, 47.0], [112.03, 46.47], [111.5, 46.25], [111.25, 46.35], [111.0, 46.25], [110.75, 46.35], [110.5, 46.25], [109.97, 46.47], [109.82, 46.82], [109.47, 46.97], [109.25, 47.5], [109.38, 47.8], [109.0, 47.96], [108.5, 47.75], [108.25, 47.85], [108.0, 47.75], [107.75, 47.85], [107.5, 47.75], [107.25, 47.85], [107.0, 47.75], [106.47, 47.97]], [[111.47, 48.53], [111.82, 48.68], [111.85, 48.75], [111.8, 48.88], [111.5, 48.75], [111.25, 48.85], [111.18, 48.82], [111.03, 48.47], [110.68, 48.32], [110.63, 48.2], [110.75, 48.15], [111.0, 48.25], [111.25, 48.15], [111.32, 48.18], [111.47, 48.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.547320333869664}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.041456740296142}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.021707508233191675, -1.9188348057745088, -0.8652359155603904]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-5.794957277460526, -9.06394167567953, -7.64929253562741]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.4369092663983345, -7.101024248261516, -5.586436706228582]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.021941481679107, -11.547320333869664, -9.015347448734587]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4252481354524715, -1.8620769260466206, -1.4647814276422702]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7914078700600147, -2.596430624779694, -2.082908186183069]}}