{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:43:52.388085", "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-Jan-15_to_2010-Jan-20_175.0_62.5"}, "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": 2010010000553}, "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": "January 15 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 53608.907821505956}, "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": []}, "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": 62.5}, "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": 175.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "175.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 164.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 175.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 61.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 64.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[171.5, 64.25], [172.03, 64.03], [172.25, 63.5], [172.03, 62.97], [171.5, 62.75], [170.97, 62.97], [170.75, 63.5], [170.97, 64.03], [171.5, 64.25]]]]}, "2010-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[170.47, 64.53], [171.0, 64.75], [171.53, 64.53], [171.68, 64.18], [172.03, 64.03], [172.2, 63.63], [172.5, 63.75], [172.75, 63.65], [173.0, 63.75], [173.53, 63.53], [173.68, 63.18], [173.75, 63.15], [174.0, 63.25], [174.25, 63.15], [174.5, 63.25], [174.75, 63.15], [175.0, 63.25], [175.25, 63.15], [175.5, 63.25], [176.03, 63.03], [176.25, 62.5], [176.03, 61.97], [175.5, 61.75], [175.25, 61.85], [175.0, 61.75], [174.75, 61.85], [174.5, 61.75], [174.25, 61.85], [174.0, 61.75], [173.75, 61.85], [173.5, 61.75], [173.25, 61.85], [173.0, 61.75], [172.47, 61.97], [172.32, 62.32], [171.97, 62.47], [171.8, 62.88], [171.5, 62.75], [171.25, 62.85], [171.0, 62.75], [170.47, 62.97], [170.25, 63.5], [170.35, 63.75], [170.25, 64.0], [170.47, 64.53]]]]}, "2010-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[164.5, 62.75], [164.75, 62.65], [165.0, 62.75], [165.25, 62.65], [165.5, 62.75], [166.03, 62.53], [166.25, 62.0], [166.15, 61.75], [166.25, 61.5], [166.03, 60.97], [165.5, 60.75], [165.0, 60.96], [164.5, 60.75], [163.97, 60.97], [163.75, 61.5], [163.85, 61.75], [163.75, 62.0], [163.97, 62.53], [164.5, 62.75]]], [[[171.0, 64.75], [171.53, 64.53], [171.68, 64.18], [172.03, 64.03], [172.2, 63.63], [172.5, 63.75], [172.75, 63.65], [173.0, 63.75], [173.53, 63.53], [173.68, 63.18], [173.75, 63.15], [174.0, 63.25], [174.25, 63.15], [174.5, 63.25], [174.75, 63.15], [175.0, 63.25], [175.25, 63.15], [175.5, 63.25], [176.03, 63.03], [176.25, 62.5], [176.03, 61.97], [175.5, 61.75], [175.25, 61.85], [175.0, 61.75], [174.75, 61.85], [174.68, 61.82], [174.53, 61.47], [174.0, 61.25], [173.75, 61.35], [173.5, 61.25], [172.97, 61.47], [172.82, 61.82], [172.47, 61.97], [172.32, 62.32], [171.97, 62.47], [171.8, 62.88], [171.5, 62.75], [171.25, 62.85], [171.0, 62.75], [170.47, 62.97], [170.25, 63.5], [170.35, 63.75], [170.25, 64.0], [170.47, 64.53], [171.0, 64.75]]]]}, "2010-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[163.97, 62.53], [164.5, 62.75], [164.75, 62.65], [165.0, 62.75], [165.25, 62.65], [165.5, 62.75], [165.75, 62.65], [165.82, 62.68], [165.97, 63.03], [166.32, 63.18], [166.47, 63.53], [167.0, 63.75], [167.25, 63.65], [167.32, 63.68], [167.47, 64.03], [168.0, 64.25], [168.25, 64.15], [168.5, 64.25], [168.75, 64.15], [168.82, 64.18], [168.97, 64.53], [169.32, 64.68], [169.47, 65.03], [170.0, 65.25], [170.25, 65.15], [170.5, 65.25], [170.75, 65.15], [171.0, 65.25], [171.53, 65.03], [171.75, 64.5], [171.65, 64.25], [171.75, 64.0], [171.65, 63.75], [171.68, 63.68], [171.75, 63.65], [172.0, 63.75], [172.25, 63.65], [172.5, 63.75], [172.75, 63.65], [173.0, 63.75], [173.53, 63.53], [173.68, 63.18], [173.75, 63.15], [174.0, 63.25], [174.25, 63.15], [174.5, 63.25], [174.75, 63.15], [175.0, 63.25], [175.25, 63.15], [175.5, 63.25], [176.03, 63.03], [176.25, 62.5], [176.03, 61.97], [175.5, 61.75], [175.25, 61.85], [175.18, 61.82], [175.03, 61.47], [174.5, 61.25], [174.25, 61.35], [174.0, 61.25], [173.75, 61.35], [173.5, 61.25], [173.25, 61.35], [173.0, 61.25], [172.47, 61.47], [172.25, 62.0], [172.35, 62.25], [172.32, 62.32], [172.25, 62.35], [172.0, 62.25], [171.75, 62.35], [171.5, 62.25], [170.97, 62.47], [170.82, 62.82], [170.47, 62.97], [170.3, 63.38], [170.0, 63.25], [169.75, 63.35], [169.68, 63.32], [169.53, 62.97], [169.18, 62.82], [169.03, 62.47], [168.5, 62.25], [168.25, 62.35], [168.0, 62.25], [167.75, 62.35], [167.68, 62.32], [167.53, 61.97], [167.18, 61.82], [167.03, 61.47], [166.5, 61.25], [166.25, 61.35], [166.18, 61.32], [166.03, 60.97], [165.5, 60.75], [165.0, 60.96], [164.5, 60.75], [163.97, 60.97], [163.75, 61.5], [163.85, 61.75], [163.75, 62.0], [163.97, 62.53]]]]}, "2010-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[163.97, 62.53], [164.5, 62.75], [164.75, 62.65], [165.0, 62.75], [165.25, 62.65], [165.5, 62.75], [165.75, 62.65], [165.82, 62.68], [165.97, 63.03], [166.32, 63.18], [166.47, 63.53], [167.0, 63.75], [167.25, 63.65], [167.32, 63.68], [167.47, 64.03], [168.0, 64.25], [168.25, 64.15], [168.5, 64.25], [168.75, 64.15], [168.82, 64.18], [168.97, 64.53], [169.32, 64.68], [169.47, 65.03], [170.0, 65.25], [170.25, 65.15], [170.5, 65.25], [170.75, 65.15], [171.0, 65.25], [171.53, 65.03], [171.75, 64.5], [171.65, 64.25], [171.75, 64.0], [171.65, 63.75], [171.68, 63.68], [171.75, 63.65], [172.0, 63.75], [172.25, 63.65], [172.5, 63.75], [172.75, 63.65], [173.0, 63.75], [173.53, 63.53], [173.68, 63.18], [173.75, 63.15], [174.0, 63.25], [174.25, 63.15], [174.5, 63.25], [174.75, 63.15], [175.0, 63.25], [175.53, 63.03], [175.75, 62.5], [175.53, 61.97], [175.18, 61.82], [175.03, 61.47], [174.5, 61.25], [174.25, 61.35], [174.0, 61.25], [173.75, 61.35], [173.5, 61.25], [173.25, 61.35], [173.0, 61.25], [172.47, 61.47], [172.25, 62.0], [172.35, 62.25], [172.32, 62.32], [172.25, 62.35], [172.0, 62.25], [171.75, 62.35], [171.5, 62.25], [170.97, 62.47], [170.82, 62.82], [170.47, 62.97], [170.3, 63.38], [170.0, 63.25], [169.75, 63.35], [169.68, 63.32], [169.53, 62.97], [169.18, 62.82], [169.03, 62.47], [168.5, 62.25], [168.25, 62.35], [168.0, 62.25], [167.75, 62.35], [167.68, 62.32], [167.53, 61.97], [167.18, 61.82], [167.03, 61.47], [166.5, 61.25], [166.25, 61.35], [166.18, 61.32], [166.03, 60.97], [165.5, 60.75], [165.0, 60.96], [164.5, 60.75], [163.97, 60.97], [163.75, 61.5], [163.85, 61.75], [163.75, 62.0], [163.97, 62.53]]]]}, "2010-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[166.32, 63.18], [166.47, 63.53], [167.0, 63.75], [167.25, 63.65], [167.32, 63.68], [167.47, 64.03], [168.0, 64.25], [168.25, 64.15], [168.5, 64.25], [168.75, 64.15], [168.82, 64.18], [168.97, 64.53], [169.32, 64.68], [169.47, 65.03], [170.0, 65.25], [170.25, 65.15], [170.5, 65.25], [170.75, 65.15], [171.0, 65.25], [171.53, 65.03], [171.75, 64.5], [171.65, 64.25], [171.75, 64.0], [171.65, 63.75], [171.68, 63.68], [171.75, 63.65], [172.0, 63.75], [172.25, 63.65], [172.5, 63.75], [172.75, 63.65], [173.0, 63.75], [173.53, 63.53], [173.68, 63.18], [173.75, 63.15], [174.0, 63.25], [174.25, 63.15], [174.5, 63.25], [174.75, 63.15], [175.0, 63.25], [175.53, 63.03], [175.75, 62.5], [175.53, 61.97], [175.18, 61.82], [175.03, 61.47], [174.5, 61.25], [174.25, 61.35], [174.0, 61.25], [173.75, 61.35], [173.5, 61.25], [173.25, 61.35], [173.0, 61.25], [172.47, 61.47], [172.25, 62.0], [172.35, 62.25], [172.32, 62.32], [172.25, 62.35], [172.0, 62.25], [171.75, 62.35], [171.5, 62.25], [170.97, 62.47], [170.82, 62.82], [170.47, 62.97], [170.3, 63.38], [170.0, 63.25], [169.75, 63.35], [169.68, 63.32], [169.53, 62.97], [169.18, 62.82], [169.03, 62.47], [168.5, 62.25], [168.25, 62.35], [168.0, 62.25], [167.75, 62.35], [167.68, 62.32], [167.53, 61.97], [167.18, 61.82], [167.03, 61.47], [166.5, 61.25], [166.25, 61.35], [166.0, 61.25], [165.47, 61.47], [165.25, 62.0], [165.47, 62.53], [165.82, 62.68], [165.97, 63.03], [166.32, 63.18]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -17.372188192002255}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -13.07540427895942}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-39.43035421864644, -41.21459999936721, -38.57487626724327, -39.360255093969016, -40.505297571167205, -40.50870113710033]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-39.43035421864644, -46.182063534587456, -46.06305868389123, -45.890152035446675, -47.05426793946205, -47.90732838090466]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-11.747968871929572, -13.88460814135637, -12.249899982451584, -12.650044501435136, -13.598198492162993, -13.210984612858603]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-11.747968871929572, -16.696208922797894, -16.289513303152347, -16.00857958788953, -16.996211092322568, -17.372188192002255]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.208719567574791, -1.4480547411343494, -1.3672318637519756, -1.4754412742658718, -1.6084844543897296, -1.55458717311459]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.208719567574791, -1.5766458042233766, -1.6125731568462887, -1.7571241037656797, -1.9090566871484809, -1.8221731011187945]}}