{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:37.795157", "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": "2013-Jun-28_to_2013-Jul-02_171.5_64.5"}, "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": 2013060001209}, "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": "June 28 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 02 2013"}, "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": 51288.303011764685}, "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-Arctic", "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": 64.5}, "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": 171.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "171.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 169.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 172.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 62.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 66.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[170.25, 66.0], [170.47, 66.53], [171.0, 66.75], [171.25, 66.65], [171.5, 66.75], [171.75, 66.65], [172.0, 66.75], [172.53, 66.53], [172.68, 66.18], [173.03, 66.03], [173.25, 65.5], [173.03, 64.97], [172.68, 64.82], [172.53, 64.47], [172.18, 64.32], [172.03, 63.97], [171.5, 63.75], [170.97, 63.97], [170.82, 64.32], [170.75, 64.35], [170.5, 64.25], [169.97, 64.47], [169.75, 65.0], [169.97, 65.53], [170.32, 65.68], [170.35, 65.75], [170.25, 66.0]]]]}, "2013-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[170.25, 66.0], [170.47, 66.53], [171.0, 66.75], [171.25, 66.65], [171.5, 66.75], [171.75, 66.65], [172.0, 66.75], [172.53, 66.53], [172.68, 66.18], [173.03, 66.03], [173.25, 65.5], [173.15, 65.25], [173.25, 65.0], [173.15, 64.75], [173.25, 64.5], [173.03, 63.97], [172.5, 63.75], [172.25, 63.85], [172.0, 63.75], [171.75, 63.85], [171.5, 63.75], [170.97, 63.97], [170.82, 64.32], [170.75, 64.35], [170.5, 64.25], [169.97, 64.47], [169.75, 65.0], [169.97, 65.53], [170.32, 65.68], [170.35, 65.75], [170.25, 66.0]]]]}, "2013-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[168.85, 63.25], [168.75, 63.5], [168.97, 64.03], [169.32, 64.18], [169.47, 64.53], [169.82, 64.68], [169.85, 64.75], [169.75, 65.0], [169.97, 65.53], [170.32, 65.68], [170.35, 65.75], [170.25, 66.0], [170.47, 66.53], [171.0, 66.75], [171.25, 66.65], [171.5, 66.75], [171.75, 66.65], [172.0, 66.75], [172.53, 66.53], [172.68, 66.18], [173.03, 66.03], [173.25, 65.5], [173.15, 65.25], [173.25, 65.0], [173.15, 64.75], [173.25, 64.5], [173.03, 63.97], [172.68, 63.82], [172.65, 63.75], [172.75, 63.5], [172.53, 62.97], [172.18, 62.82], [172.15, 62.75], [172.25, 62.5], [172.03, 61.97], [171.5, 61.75], [171.25, 61.85], [171.0, 61.75], [170.75, 61.85], [170.5, 61.75], [170.25, 61.85], [170.0, 61.75], [169.75, 61.85], [169.5, 61.75], [168.97, 61.97], [168.75, 62.5], [168.85, 62.75], [168.75, 63.0], [168.85, 63.25]]]]}, "2013-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[168.85, 63.25], [168.75, 63.5], [168.97, 64.03], [169.32, 64.18], [169.47, 64.53], [169.82, 64.68], [169.85, 64.75], [169.75, 65.0], [169.97, 65.53], [170.32, 65.68], [170.35, 65.75], [170.25, 66.0], [170.47, 66.53], [171.0, 66.75], [171.25, 66.65], [171.5, 66.75], [171.75, 66.65], [172.0, 66.75], [172.53, 66.53], [172.68, 66.18], [173.03, 66.03], [173.25, 65.5], [173.15, 65.25], [173.25, 65.0], [173.15, 64.75], [173.25, 64.5], [173.03, 63.97], [172.68, 63.82], [172.65, 63.75], [172.75, 63.5], [172.53, 62.97], [172.18, 62.82], [172.15, 62.75], [172.25, 62.5], [172.03, 61.97], [171.5, 61.75], [171.25, 61.85], [171.0, 61.75], [170.75, 61.85], [170.5, 61.75], [170.25, 61.85], [170.0, 61.75], [169.75, 61.85], [169.5, 61.75], [168.97, 61.97], [168.75, 62.5], [168.85, 62.75], [168.75, 63.0], [168.85, 63.25]]]]}, "2013-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[168.85, 63.25], [168.75, 63.5], [168.97, 64.03], [169.32, 64.18], [169.47, 64.53], [169.82, 64.68], [169.85, 64.75], [169.75, 65.0], [169.97, 65.53], [170.5, 65.75], [170.75, 65.65], [171.0, 65.75], [171.25, 65.65], [171.5, 65.75], [171.75, 65.65], [171.82, 65.68], [171.97, 66.03], [172.5, 66.25], [173.03, 66.03], [173.25, 65.5], [173.15, 65.25], [173.25, 65.0], [173.03, 64.47], [172.68, 64.32], [172.65, 64.25], [172.75, 64.0], [172.65, 63.75], [172.75, 63.5], [172.53, 62.97], [172.18, 62.82], [172.15, 62.75], [172.25, 62.5], [172.03, 61.97], [171.5, 61.75], [171.25, 61.85], [171.0, 61.75], [170.75, 61.85], [170.5, 61.75], [170.25, 61.85], [170.0, 61.75], [169.75, 61.85], [169.5, 61.75], [168.97, 61.97], [168.75, 62.5], [168.85, 62.75], [168.75, 63.0], [168.85, 63.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.757740324551378}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.2570315893864406}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.015205658915704, 8.321822838984644, 7.856772395114717, 7.086717735819491, 8.056586760333516]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.0736758037165828, 5.838573708552076, 4.371596788840463, 4.6679192304973185, 4.536537950905881]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.202105507102743, -5.008076411210906, -4.756784806395263, -5.756814977862137, -5.012226739438893]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.757740324551378, -5.6222872028890265, -5.239054081985387, -7.0102334314073005, -5.410603887248726]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.700185533876601, -1.3493413523439162, -1.4115283640667027, -1.6576831283983378, -1.4569106262153864]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0844579174417457, -1.4973671984738945, -1.5622855538982647, -2.0324144709095124, -1.6088759150980136]}}