{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:53.356543", "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": "2021-Jan-12_to_2021-Jan-19_166.5_60.5"}, "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": 2021010000554}, "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 12 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 19 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 199555.3283516189}, "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": ["Bering Sea", "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": 60.5}, "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": 166.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "166.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 160.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 171.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[161.47, 59.47], [161.25, 60.0], [161.47, 60.53], [162.0, 60.75], [162.53, 60.53], [162.75, 60.0], [162.53, 59.47], [162.0, 59.25], [161.47, 59.47]]], [[[164.75, 61.0], [164.97, 61.53], [165.5, 61.75], [165.8, 61.63], [165.97, 62.03], [166.5, 62.25], [166.75, 62.15], [167.0, 62.25], [167.25, 62.15], [167.32, 62.18], [167.47, 62.53], [168.0, 62.75], [168.25, 62.65], [168.5, 62.75], [168.75, 62.65], [168.82, 62.68], [168.97, 63.03], [169.32, 63.18], [169.47, 63.53], [170.0, 63.75], [170.53, 63.53], [170.75, 63.0], [170.65, 62.75], [170.68, 62.68], [171.03, 62.53], [171.25, 62.0], [171.03, 61.47], [170.5, 61.25], [170.25, 61.35], [170.0, 61.25], [169.75, 61.35], [169.5, 61.25], [169.25, 61.35], [169.18, 61.32], [169.03, 60.97], [168.5, 60.75], [168.25, 60.85], [168.0, 60.75], [167.75, 60.85], [167.5, 60.75], [167.25, 60.85], [167.13, 60.8], [167.25, 60.5], [167.03, 59.97], [166.5, 59.75], [165.97, 59.97], [165.8, 60.38], [165.5, 60.25], [164.97, 60.47], [164.75, 61.0]]]]}, "2021-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[161.25, 60.0], [161.47, 60.53], [161.82, 60.68], [161.97, 61.03], [162.5, 61.25], [162.75, 61.15], [162.82, 61.18], [162.97, 61.53], [163.32, 61.68], [163.47, 62.03], [164.0, 62.25], [164.25, 62.15], [164.5, 62.25], [164.75, 62.15], [165.0, 62.25], [165.5, 62.04], [166.0, 62.25], [166.25, 62.15], [166.5, 62.25], [166.75, 62.15], [166.82, 62.18], [166.97, 62.53], [167.5, 62.75], [167.75, 62.65], [168.0, 62.75], [168.25, 62.65], [168.32, 62.68], [168.47, 63.03], [169.0, 63.25], [169.25, 63.15], [169.32, 63.18], [169.47, 63.53], [170.0, 63.75], [170.53, 63.53], [170.75, 63.0], [170.65, 62.75], [170.68, 62.68], [171.03, 62.53], [171.25, 62.0], [171.03, 61.47], [170.5, 61.25], [170.25, 61.35], [170.0, 61.25], [169.75, 61.35], [169.68, 61.32], [169.65, 61.25], [169.75, 61.0], [169.53, 60.47], [169.0, 60.25], [168.75, 60.35], [168.68, 60.32], [168.54, 60.0], [168.68, 59.68], [168.75, 59.65], [169.0, 59.75], [169.53, 59.53], [169.68, 59.18], [169.75, 59.15], [170.0, 59.25], [170.25, 59.15], [170.5, 59.25], [171.03, 59.03], [171.25, 58.5], [171.15, 58.25], [171.25, 58.0], [171.15, 57.75], [171.25, 57.5], [171.15, 57.25], [171.25, 57.0], [171.03, 56.47], [170.5, 56.25], [170.25, 56.35], [170.0, 56.25], [169.75, 56.35], [169.68, 56.32], [169.53, 55.97], [169.0, 55.75], [168.47, 55.97], [168.32, 56.32], [168.25, 56.35], [168.0, 56.25], [167.47, 56.47], [167.32, 56.82], [167.25, 56.85], [167.0, 56.75], [166.47, 56.97], [166.25, 57.5], [166.35, 57.75], [166.32, 57.82], [165.97, 57.97], [165.75, 58.5], [165.85, 58.75], [165.82, 58.82], [165.47, 58.97], [165.32, 59.32], [165.25, 59.35], [165.13, 59.3], [165.25, 59.0], [165.03, 58.47], [164.5, 58.25], [163.97, 58.47], [163.8, 58.88], [163.5, 58.75], [163.25, 58.85], [163.0, 58.75], [162.75, 58.85], [162.5, 58.75], [161.97, 58.97], [161.82, 59.32], [161.47, 59.47], [161.25, 60.0]]]]}, "2021-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[161.35, 58.75], [161.25, 59.0], [161.35, 59.25], [161.25, 59.5], [161.35, 59.75], [161.25, 60.0], [161.35, 60.25], [161.25, 60.5], [161.47, 61.03], [162.0, 61.25], [162.25, 61.15], [162.32, 61.18], [162.47, 61.53], [163.0, 61.75], [163.25, 61.65], [163.32, 61.68], [163.47, 62.03], [164.0, 62.25], [164.25, 62.15], [164.5, 62.25], [164.75, 62.15], [165.0, 62.25], [165.25, 62.15], [165.5, 62.25], [165.75, 62.15], [166.0, 62.25], [166.25, 62.15], [166.5, 62.25], [166.75, 62.15], [166.82, 62.18], [166.97, 62.53], [167.5, 62.75], [167.75, 62.65], [168.0, 62.75], [168.25, 62.65], [168.32, 62.68], [168.47, 63.03], [169.0, 63.25], [169.25, 63.15], [169.32, 63.18], [169.47, 63.53], [170.0, 63.75], [170.53, 63.53], [170.75, 63.0], [170.65, 62.75], [170.68, 62.68], [171.03, 62.53], [171.25, 62.0], [171.03, 61.47], [170.5, 61.25], [170.25, 61.35], [170.0, 61.25], [169.75, 61.35], [169.68, 61.32], [169.65, 61.25], [169.75, 61.0], [169.53, 60.47], [169.18, 60.32], [169.13, 60.2], [169.5, 60.04], [170.0, 60.25], [170.25, 60.15], [170.5, 60.25], [171.03, 60.03], [171.25, 59.5], [171.15, 59.25], [171.25, 59.0], [171.15, 58.75], [171.18, 58.68], [171.53, 58.53], [171.75, 58.0], [171.53, 57.47], [171.18, 57.32], [171.15, 57.25], [171.25, 57.0], [171.03, 56.47], [170.5, 56.25], [170.25, 56.35], [170.0, 56.25], [169.75, 56.35], [169.68, 56.32], [169.53, 55.97], [169.0, 55.75], [168.47, 55.97], [168.32, 56.32], [168.25, 56.35], [168.0, 56.25], [167.47, 56.47], [167.32, 56.82], [167.25, 56.85], [167.0, 56.75], [166.47, 56.97], [166.25, 57.5], [166.35, 57.75], [166.32, 57.82], [165.97, 57.97], [165.75, 58.5], [165.85, 58.75], [165.82, 58.82], [165.47, 58.97], [165.32, 59.32], [165.25, 59.35], [165.13, 59.3], [165.25, 59.0], [165.03, 58.47], [164.5, 58.25], [164.25, 58.35], [164.0, 58.25], [163.5, 58.46], [163.13, 58.3], [163.25, 58.0], [163.15, 57.75], [163.25, 57.5], [163.03, 56.97], [162.5, 56.75], [161.97, 56.97], [161.82, 57.32], [161.47, 57.47], [161.25, 58.0], [161.35, 58.25], [161.25, 58.5], [161.35, 58.75]]]]}, "2021-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[160.47, 59.97], [160.25, 60.5], [160.47, 61.03], [161.0, 61.25], [161.25, 61.15], [161.5, 61.25], [161.75, 61.15], [162.0, 61.25], [162.25, 61.15], [162.32, 61.18], [162.47, 61.53], [163.0, 61.75], [163.25, 61.65], [163.32, 61.68], [163.47, 62.03], [164.0, 62.25], [164.25, 62.15], [164.5, 62.25], [164.75, 62.15], [165.0, 62.25], [165.25, 62.15], [165.5, 62.25], [165.75, 62.15], [166.0, 62.25], [166.25, 62.15], [166.5, 62.25], [166.75, 62.15], [166.82, 62.18], [166.97, 62.53], [167.5, 62.75], [167.75, 62.65], [168.0, 62.75], [168.25, 62.65], [168.32, 62.68], [168.47, 63.03], [169.0, 63.25], [169.25, 63.15], [169.32, 63.18], [169.47, 63.53], [170.0, 63.75], [170.53, 63.53], [170.75, 63.0], [170.53, 62.47], [170.18, 62.32], [170.03, 61.97], [169.68, 61.82], [169.65, 61.75], [169.68, 61.68], [170.03, 61.53], [170.25, 61.0], [170.03, 60.47], [169.5, 60.25], [169.25, 60.35], [169.18, 60.32], [169.13, 60.2], [169.5, 60.04], [170.0, 60.25], [170.25, 60.15], [170.5, 60.25], [171.03, 60.03], [171.25, 59.5], [171.15, 59.25], [171.25, 59.0], [171.15, 58.75], [171.18, 58.68], [171.53, 58.53], [171.75, 58.0], [171.53, 57.47], [171.18, 57.32], [171.15, 57.25], [171.25, 57.0], [171.03, 56.47], [170.5, 56.25], [170.25, 56.35], [170.0, 56.25], [169.75, 56.35], [169.68, 56.32], [169.53, 55.97], [169.0, 55.75], [168.47, 55.97], [168.32, 56.32], [168.25, 56.35], [168.0, 56.25], [167.47, 56.47], [167.32, 56.82], [167.25, 56.85], [167.0, 56.75], [166.47, 56.97], [166.25, 57.5], [166.35, 57.75], [166.32, 57.82], [165.97, 57.97], [165.75, 58.5], [165.85, 58.75], [165.82, 58.82], [165.47, 58.97], [165.32, 59.32], [165.25, 59.35], [165.13, 59.3], [165.25, 59.0], [165.03, 58.47], [164.5, 58.25], [164.25, 58.35], [164.0, 58.25], [163.5, 58.46], [163.13, 58.3], [163.25, 58.0], [163.15, 57.75], [163.25, 57.5], [163.03, 56.97], [162.5, 56.75], [161.97, 56.97], [161.82, 57.32], [161.47, 57.47], [161.25, 58.0], [161.35, 58.25], [161.25, 58.5], [161.35, 58.75], [161.25, 59.0], [161.35, 59.25], [161.25, 59.5], [161.35, 59.75], [161.32, 59.82], [161.25, 59.85], [161.0, 59.75], [160.47, 59.97]]]]}, "2021-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[160.47, 59.97], [160.25, 60.5], [160.47, 61.03], [161.0, 61.25], [161.25, 61.15], [161.5, 61.25], [161.75, 61.15], [162.0, 61.25], [162.25, 61.15], [162.32, 61.18], [162.47, 61.53], [163.0, 61.75], [163.25, 61.65], [163.32, 61.68], [163.47, 62.03], [164.0, 62.25], [164.25, 62.15], [164.5, 62.25], [164.75, 62.15], [165.0, 62.25], [165.25, 62.15], [165.5, 62.25], [165.75, 62.15], [166.0, 62.25], [166.25, 62.15], [166.5, 62.25], [166.75, 62.15], [166.82, 62.18], [166.97, 62.53], [167.5, 62.75], [167.75, 62.65], [168.0, 62.75], [168.25, 62.65], [168.5, 62.75], [168.75, 62.65], [169.0, 62.75], [169.25, 62.65], [169.5, 62.75], [170.03, 62.53], [170.25, 62.0], [170.04, 61.5], [170.25, 61.0], [170.03, 60.47], [169.5, 60.25], [169.25, 60.35], [169.18, 60.32], [169.13, 60.2], [169.5, 60.04], [170.0, 60.25], [170.25, 60.15], [170.5, 60.25], [171.03, 60.03], [171.25, 59.5], [171.15, 59.25], [171.25, 59.0], [171.15, 58.75], [171.18, 58.68], [171.53, 58.53], [171.75, 58.0], [171.53, 57.47], [171.18, 57.32], [171.03, 56.97], [170.5, 56.75], [170.25, 56.85], [170.0, 56.75], [169.75, 56.85], [169.5, 56.75], [169.25, 56.85], [169.0, 56.75], [168.75, 56.85], [168.5, 56.75], [168.25, 56.85], [168.0, 56.75], [167.47, 56.97], [167.32, 57.32], [167.25, 57.35], [167.0, 57.25], [166.47, 57.47], [166.32, 57.82], [165.97, 57.97], [165.75, 58.5], [165.85, 58.75], [165.82, 58.82], [165.47, 58.97], [165.32, 59.32], [165.25, 59.35], [165.13, 59.3], [165.25, 59.0], [165.03, 58.47], [164.5, 58.25], [164.25, 58.35], [164.0, 58.25], [163.5, 58.46], [163.13, 58.3], [163.25, 58.0], [163.15, 57.75], [163.25, 57.5], [163.03, 56.97], [162.5, 56.75], [161.97, 56.97], [161.82, 57.32], [161.47, 57.47], [161.25, 58.0], [161.35, 58.25], [161.25, 58.5], [161.35, 58.75], [161.25, 59.0], [161.35, 59.25], [161.25, 59.5], [161.35, 59.75], [161.32, 59.82], [161.25, 59.85], [161.0, 59.75], [160.47, 59.97]]]]}, "2021-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[160.47, 59.97], [160.25, 60.5], [160.47, 61.03], [161.0, 61.25], [161.25, 61.15], [161.5, 61.25], [161.75, 61.15], [162.0, 61.25], [162.25, 61.15], [162.32, 61.18], [162.47, 61.53], [163.0, 61.75], [163.53, 61.53], [163.68, 61.18], [163.75, 61.15], [164.0, 61.25], [164.3, 61.13], [164.47, 61.53], [165.0, 61.75], [165.25, 61.65], [165.5, 61.75], [165.75, 61.65], [166.0, 61.75], [166.25, 61.65], [166.32, 61.68], [166.47, 62.03], [166.82, 62.18], [166.97, 62.53], [167.5, 62.75], [167.75, 62.65], [168.0, 62.75], [168.25, 62.65], [168.5, 62.75], [168.75, 62.65], [169.0, 62.75], [169.25, 62.65], [169.5, 62.75], [169.75, 62.65], [170.0, 62.75], [170.53, 62.53], [170.75, 62.0], [170.53, 61.47], [170.13, 61.3], [170.25, 61.0], [170.03, 60.47], [169.5, 60.25], [169.25, 60.35], [169.0, 60.25], [168.75, 60.35], [168.68, 60.32], [168.53, 59.97], [168.0, 59.75], [167.75, 59.85], [167.5, 59.75], [167.0, 59.96], [166.5, 59.75], [166.25, 59.85], [166.0, 59.75], [165.75, 59.85], [165.5, 59.75], [164.97, 59.97], [164.82, 60.32], [164.7, 60.38], [164.53, 59.97], [164.0, 59.75], [163.75, 59.85], [163.5, 59.75], [163.25, 59.85], [163.0, 59.75], [162.75, 59.85], [162.5, 59.75], [162.25, 59.85], [162.0, 59.75], [161.75, 59.85], [161.5, 59.75], [161.25, 59.85], [161.0, 59.75], [160.47, 59.97]]]]}, "2021-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[167.97, 61.47], [167.75, 62.0], [167.97, 62.53], [168.5, 62.75], [168.75, 62.65], [169.0, 62.75], [169.25, 62.65], [169.5, 62.75], [169.75, 62.65], [170.0, 62.75], [170.53, 62.53], [170.75, 62.0], [170.53, 61.47], [170.0, 61.25], [169.75, 61.35], [169.5, 61.25], [169.25, 61.35], [169.0, 61.25], [168.75, 61.35], [168.5, 61.25], [167.97, 61.47]]]]}, "2021-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[170.0, 62.75], [170.53, 62.53], [170.75, 62.0], [170.53, 61.47], [170.0, 61.25], [169.47, 61.47], [169.25, 62.0], [169.47, 62.53], [170.0, 62.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -20.927287523957688}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -10.4966402936872}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-33.33238625507184, -22.65062980424159, -23.068860480618696, -23.43706789769132, -24.129220694525713, -31.934821475533568, -35.0247617015379, -32.98027388322035]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-35.01059673841499, -39.85745814194206, -39.68679012939495, -42.35407161794424, -43.6058206313094, -36.548261143514, -35.16962986023182, -32.98027388322035]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-11.110780147666793, -9.806382109395289, -10.36630303810424, -10.79806644272477, -10.684856297475632, -11.02993126930333, -11.144513772709836, -8.609665685796074]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-12.294118128756082, -17.368636349404966, -19.320610061582897, -20.927287523957688, -19.890928393734782, -13.73632843463622, -11.681257450070603, -8.609665685796074]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3051084660739927, -1.503396733230942, -1.6443404617446986, -1.6638505774125982, -1.6198056153292846, -1.3570124075304344, -1.445351482369947, -1.188736803505581]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5003109629138203, -1.8765136074601132, -2.2482353613760493, -2.5896349860964967, -2.318879603518481, -1.519447429563948, -1.5016386309086058, -1.188736803505581]}}