{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:24.014367", "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": "2016-May-24_to_2016-May-26_100.5_65.0"}, "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": 2016050000638}, "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 24 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 26 2016"}, "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": 112326.48705864203}, "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-Arctic"]}, "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": 65.0}, "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": 100.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "100.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 99.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 110.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 63.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.47, 64.47], [99.25, 65.0], [99.47, 65.53], [100.0, 65.75], [100.25, 65.65], [100.32, 65.68], [100.47, 66.03], [101.0, 66.25], [101.25, 66.15], [101.32, 66.18], [101.35, 66.25], [101.25, 66.5], [101.47, 67.03], [102.0, 67.25], [102.25, 67.15], [102.5, 67.25], [102.75, 67.15], [103.0, 67.25], [103.25, 67.15], [103.5, 67.25], [103.75, 67.15], [104.0, 67.25], [104.25, 67.15], [104.32, 67.18], [104.47, 67.53], [105.0, 67.75], [105.25, 67.65], [105.5, 67.75], [106.03, 67.53], [106.18, 67.18], [106.25, 67.15], [106.32, 67.18], [106.47, 67.53], [107.0, 67.75], [107.53, 67.53], [107.68, 67.18], [107.75, 67.15], [107.82, 67.18], [107.97, 67.53], [108.5, 67.75], [108.75, 67.65], [109.0, 67.75], [109.53, 67.53], [109.68, 67.18], [110.03, 67.03], [110.18, 66.68], [110.53, 66.53], [110.68, 66.18], [111.03, 66.03], [111.25, 65.5], [111.15, 65.25], [111.25, 65.0], [111.03, 64.47], [110.5, 64.25], [110.25, 64.35], [110.0, 64.25], [109.75, 64.35], [109.5, 64.25], [109.25, 64.35], [109.18, 64.32], [109.15, 64.25], [109.25, 64.0], [109.03, 63.47], [108.5, 63.25], [108.25, 63.35], [108.0, 63.25], [107.47, 63.47], [107.32, 63.82], [107.25, 63.85], [107.0, 63.75], [106.75, 63.85], [106.5, 63.75], [106.25, 63.85], [106.0, 63.75], [105.75, 63.85], [105.5, 63.75], [105.25, 63.85], [105.0, 63.75], [104.75, 63.85], [104.5, 63.75], [104.25, 63.85], [104.0, 63.75], [103.47, 63.97], [103.25, 64.5], [103.43, 64.93], [103.18, 64.82], [103.03, 64.47], [102.5, 64.25], [102.25, 64.35], [102.0, 64.25], [101.75, 64.35], [101.5, 64.25], [101.25, 64.35], [101.0, 64.25], [100.75, 64.35], [100.5, 64.25], [100.25, 64.35], [100.0, 64.25], [99.47, 64.47]]]]}, "2016-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.47, 64.47], [99.25, 65.0], [99.47, 65.53], [100.0, 65.75], [100.25, 65.65], [100.32, 65.68], [100.47, 66.03], [101.0, 66.25], [101.25, 66.15], [101.32, 66.18], [101.35, 66.25], [101.25, 66.5], [101.47, 67.03], [102.0, 67.25], [102.25, 67.15], [102.5, 67.25], [102.75, 67.15], [103.0, 67.25], [103.25, 67.15], [103.5, 67.25], [103.75, 67.15], [104.0, 67.25], [104.25, 67.15], [104.32, 67.18], [104.47, 67.53], [105.0, 67.75], [105.25, 67.65], [105.5, 67.75], [106.03, 67.53], [106.18, 67.18], [106.25, 67.15], [106.32, 67.18], [106.47, 67.53], [107.0, 67.75], [107.53, 67.53], [107.68, 67.18], [107.75, 67.15], [107.82, 67.18], [107.97, 67.53], [108.5, 67.75], [108.75, 67.65], [109.0, 67.75], [109.53, 67.53], [109.68, 67.18], [110.03, 67.03], [110.18, 66.68], [110.53, 66.53], [110.68, 66.18], [111.03, 66.03], [111.25, 65.5], [111.15, 65.25], [111.25, 65.0], [111.03, 64.47], [110.5, 64.25], [110.25, 64.35], [110.0, 64.25], [109.75, 64.35], [109.5, 64.25], [109.25, 64.35], [109.18, 64.32], [109.15, 64.25], [109.25, 64.0], [109.03, 63.47], [108.5, 63.25], [108.25, 63.35], [108.0, 63.25], [107.47, 63.47], [107.32, 63.82], [107.25, 63.85], [107.0, 63.75], [106.75, 63.85], [106.5, 63.75], [106.25, 63.85], [106.0, 63.75], [105.75, 63.85], [105.5, 63.75], [105.25, 63.85], [105.0, 63.75], [104.75, 63.85], [104.5, 63.75], [104.25, 63.85], [104.0, 63.75], [103.47, 63.97], [103.25, 64.5], [103.43, 64.93], [103.18, 64.82], [103.03, 64.47], [102.5, 64.25], [102.25, 64.35], [102.0, 64.25], [101.75, 64.35], [101.5, 64.25], [101.25, 64.35], [101.0, 64.25], [100.75, 64.35], [100.5, 64.25], [100.25, 64.35], [100.0, 64.25], [99.47, 64.47]]]]}, "2016-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.47, 64.47], [99.25, 65.0], [99.47, 65.53], [100.0, 65.75], [100.25, 65.65], [100.32, 65.68], [100.47, 66.03], [101.0, 66.25], [101.25, 66.15], [101.32, 66.18], [101.35, 66.25], [101.25, 66.5], [101.47, 67.03], [102.0, 67.25], [102.25, 67.15], [102.5, 67.25], [102.75, 67.15], [103.0, 67.25], [103.25, 67.15], [103.5, 67.25], [103.75, 67.15], [104.0, 67.25], [104.25, 67.15], [104.32, 67.18], [104.47, 67.53], [105.0, 67.75], [105.25, 67.65], [105.5, 67.75], [106.03, 67.53], [106.18, 67.18], [106.25, 67.15], [106.32, 67.18], [106.47, 67.53], [107.0, 67.75], [107.53, 67.53], [107.68, 67.18], [107.75, 67.15], [107.82, 67.18], [107.97, 67.53], [108.5, 67.75], [108.75, 67.65], [109.0, 67.75], [109.53, 67.53], [109.68, 67.18], [110.03, 67.03], [110.18, 66.68], [110.53, 66.53], [110.68, 66.18], [111.03, 66.03], [111.25, 65.5], [111.15, 65.25], [111.25, 65.0], [111.03, 64.47], [110.5, 64.25], [110.25, 64.35], [110.0, 64.25], [109.75, 64.35], [109.5, 64.25], [109.25, 64.35], [109.18, 64.32], [109.15, 64.25], [109.25, 64.0], [109.03, 63.47], [108.5, 63.25], [108.25, 63.35], [108.0, 63.25], [107.47, 63.47], [107.32, 63.82], [107.25, 63.85], [107.0, 63.75], [106.75, 63.85], [106.5, 63.75], [106.25, 63.85], [106.0, 63.75], [105.75, 63.85], [105.5, 63.75], [105.25, 63.85], [105.0, 63.75], [104.75, 63.85], [104.5, 63.75], [104.25, 63.85], [104.0, 63.75], [103.47, 63.97], [103.25, 64.5], [103.43, 64.93], [103.18, 64.82], [103.03, 64.47], [102.5, 64.25], [102.25, 64.35], [102.0, 64.25], [101.75, 64.35], [101.5, 64.25], [101.25, 64.35], [101.0, 64.25], [100.75, 64.35], [100.5, 64.25], [100.25, 64.35], [100.0, 64.25], [99.47, 64.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.70052032716859}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.26976676439733}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-2.2826039086647256, -2.5082136523831196, -1.274462045168832]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.644168683890314, -4.418199692333985, -3.525367613127173]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.260188225912396, -6.729398110894189, -5.819713956385399]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.232379969182887, -7.70052032716859, -7.322941935669746]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2831869066229789, -1.4164875550470877, -1.2339419684058202]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.47729463500602, -1.557249728417764, -1.5397436680801029]}}