{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:59.200660", "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-Aug-01_to_2016-Aug-04_112.0_69.0"}, "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": 2016080000115}, "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": "August 01 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 04 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 261305.14013291898}, "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"]}, "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": ["Laptev Sea"]}, "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": 69.0}, "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": 112.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "112.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 107.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 66.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 75.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.97, 71.03], [107.32, 71.18], [107.47, 71.53], [108.0, 71.75], [108.25, 71.65], [108.5, 71.75], [108.75, 71.65], [108.82, 71.68], [108.97, 72.03], [109.32, 72.18], [109.47, 72.53], [109.82, 72.68], [109.97, 73.03], [110.32, 73.18], [110.47, 73.53], [111.0, 73.75], [111.25, 73.65], [111.5, 73.75], [111.75, 73.65], [111.82, 73.68], [111.97, 74.03], [112.5, 74.25], [112.75, 74.15], [113.0, 74.25], [113.25, 74.15], [113.38, 74.2], [113.25, 74.5], [113.47, 75.03], [114.0, 75.25], [114.25, 75.15], [114.5, 75.25], [114.75, 75.15], [115.0, 75.25], [115.25, 75.15], [115.32, 75.18], [115.47, 75.53], [116.0, 75.75], [116.53, 75.53], [116.68, 75.18], [117.03, 75.03], [117.18, 74.68], [117.53, 74.53], [117.68, 74.18], [117.75, 74.15], [118.0, 74.25], [118.25, 74.15], [118.5, 74.25], [118.75, 74.15], [118.82, 74.18], [118.97, 74.53], [119.32, 74.68], [119.47, 75.03], [120.0, 75.25], [120.25, 75.15], [120.32, 75.18], [120.47, 75.53], [121.0, 75.75], [121.25, 75.65], [121.5, 75.75], [121.75, 75.65], [122.0, 75.75], [122.25, 75.65], [122.5, 75.75], [122.75, 75.65], [123.0, 75.75], [123.25, 75.65], [123.5, 75.75], [123.75, 75.65], [124.0, 75.75], [124.53, 75.53], [124.75, 75.0], [124.53, 74.47], [124.0, 74.25], [123.75, 74.35], [123.5, 74.25], [123.25, 74.35], [123.0, 74.25], [122.75, 74.35], [122.68, 74.32], [122.53, 73.97], [122.0, 73.75], [121.75, 73.85], [121.5, 73.75], [121.25, 73.85], [121.18, 73.82], [121.03, 73.47], [120.5, 73.25], [120.25, 73.35], [120.0, 73.25], [119.75, 73.35], [119.68, 73.32], [119.53, 72.97], [119.0, 72.75], [118.75, 72.85], [118.5, 72.75], [118.25, 72.85], [118.18, 72.82], [118.03, 72.47], [117.5, 72.25], [117.25, 72.35], [117.0, 72.25], [116.75, 72.35], [116.5, 72.25], [116.25, 72.35], [116.0, 72.25], [115.75, 72.35], [115.68, 72.32], [115.53, 71.97], [115.0, 71.75], [114.75, 71.85], [114.68, 71.82], [114.65, 71.75], [114.75, 71.5], [114.65, 71.25], [114.75, 71.0], [114.65, 70.75], [114.75, 70.5], [114.65, 70.25], [114.75, 70.0], [114.53, 69.47], [114.18, 69.32], [114.15, 69.25], [114.25, 69.0], [114.03, 68.47], [113.68, 68.32], [113.53, 67.97], [113.18, 67.82], [113.03, 67.47], [112.5, 67.25], [111.97, 67.47], [111.82, 67.82], [111.47, 67.97], [111.32, 68.32], [111.25, 68.35], [111.0, 68.25], [110.47, 68.47], [110.32, 68.82], [109.97, 68.97], [109.82, 69.32], [109.47, 69.47], [109.32, 69.82], [109.25, 69.85], [109.18, 69.82], [109.03, 69.47], [108.5, 69.25], [108.25, 69.35], [108.0, 69.25], [107.75, 69.35], [107.5, 69.25], [106.97, 69.47], [106.75, 70.0], [106.85, 70.25], [106.75, 70.5], [106.97, 71.03]]]]}, "2016-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.97, 71.03], [107.32, 71.18], [107.47, 71.53], [108.0, 71.75], [108.25, 71.65], [108.5, 71.75], [108.75, 71.65], [108.82, 71.68], [108.97, 72.03], [109.32, 72.18], [109.47, 72.53], [109.82, 72.68], [109.97, 73.03], [110.32, 73.18], [110.47, 73.53], [111.0, 73.75], [111.25, 73.65], [111.5, 73.75], [111.75, 73.65], [111.82, 73.68], [111.97, 74.03], [112.5, 74.25], [112.75, 74.15], [113.0, 74.25], [113.25, 74.15], [113.38, 74.2], [113.25, 74.5], [113.47, 75.03], [114.0, 75.25], [114.25, 75.15], [114.5, 75.25], [114.75, 75.15], [115.0, 75.25], [115.25, 75.15], [115.32, 75.18], [115.47, 75.53], [116.0, 75.75], [116.53, 75.53], [116.68, 75.18], [117.03, 75.03], [117.18, 74.68], [117.53, 74.53], [117.68, 74.18], [117.75, 74.15], [118.0, 74.25], [118.25, 74.15], [118.5, 74.25], [118.75, 74.15], [118.82, 74.18], [118.97, 74.53], [119.32, 74.68], [119.47, 75.03], [120.0, 75.25], [120.25, 75.15], [120.32, 75.18], [120.47, 75.53], [121.0, 75.75], [121.25, 75.65], [121.5, 75.75], [121.75, 75.65], [122.0, 75.75], [122.25, 75.65], [122.5, 75.75], [122.75, 75.65], [123.0, 75.75], [123.25, 75.65], [123.5, 75.75], [123.75, 75.65], [124.0, 75.75], [124.53, 75.53], [124.75, 75.0], [124.53, 74.47], [124.0, 74.25], [123.75, 74.35], [123.5, 74.25], [123.25, 74.35], [123.0, 74.25], [122.75, 74.35], [122.68, 74.32], [122.53, 73.97], [122.0, 73.75], [121.75, 73.85], [121.5, 73.75], [121.25, 73.85], [121.18, 73.82], [121.03, 73.47], [120.5, 73.25], [120.25, 73.35], [120.0, 73.25], [119.75, 73.35], [119.68, 73.32], [119.53, 72.97], [119.0, 72.75], [118.75, 72.85], [118.5, 72.75], [118.25, 72.85], [118.18, 72.82], [118.03, 72.47], [117.5, 72.25], [117.25, 72.35], [117.0, 72.25], [116.75, 72.35], [116.5, 72.25], [116.25, 72.35], [116.0, 72.25], [115.75, 72.35], [115.68, 72.32], [115.53, 71.97], [115.0, 71.75], [114.75, 71.85], [114.68, 71.82], [114.65, 71.75], [114.75, 71.5], [114.65, 71.25], [114.75, 71.0], [114.65, 70.75], [114.68, 70.68], [114.75, 70.65], [114.82, 70.68], [114.97, 71.03], [115.5, 71.25], [115.75, 71.15], [116.0, 71.25], [116.53, 71.03], [116.68, 70.68], [116.75, 70.65], [117.0, 70.75], [117.25, 70.65], [117.5, 70.75], [117.75, 70.65], [118.0, 70.75], [118.25, 70.65], [118.5, 70.75], [119.03, 70.53], [119.18, 70.18], [119.25, 70.15], [119.5, 70.25], [119.75, 70.15], [120.0, 70.25], [120.53, 70.03], [120.68, 69.68], [121.03, 69.53], [121.18, 69.18], [121.25, 69.15], [121.5, 69.25], [121.75, 69.15], [122.0, 69.25], [122.53, 69.03], [122.75, 68.5], [122.53, 67.97], [122.18, 67.82], [122.15, 67.75], [122.18, 67.68], [122.53, 67.53], [122.75, 67.0], [122.65, 66.75], [122.75, 66.5], [122.53, 65.97], [122.0, 65.75], [121.75, 65.85], [121.5, 65.75], [121.25, 65.85], [121.0, 65.75], [120.75, 65.85], [120.5, 65.75], [120.25, 65.85], [120.0, 65.75], [119.75, 65.85], [119.5, 65.75], [119.25, 65.85], [119.0, 65.75], [118.75, 65.85], [118.5, 65.75], [117.97, 65.97], [117.82, 66.32], [117.75, 66.35], [117.5, 66.25], [117.25, 66.35], [117.0, 66.25], [116.75, 66.35], [116.5, 66.25], [116.25, 66.35], [116.0, 66.25], [115.75, 66.35], [115.5, 66.25], [115.25, 66.35], [115.0, 66.25], [114.47, 66.47], [114.32, 66.82], [114.25, 66.85], [114.0, 66.75], [113.47, 66.97], [113.32, 67.32], [113.25, 67.35], [113.0, 67.25], [112.75, 67.35], [112.5, 67.25], [111.97, 67.47], [111.82, 67.82], [111.47, 67.97], [111.32, 68.32], [111.25, 68.35], [111.0, 68.25], [110.47, 68.47], [110.32, 68.82], [109.97, 68.97], [109.82, 69.32], [109.47, 69.47], [109.32, 69.82], [109.25, 69.85], [109.18, 69.82], [109.03, 69.47], [108.5, 69.25], [108.25, 69.35], [108.0, 69.25], [107.75, 69.35], [107.5, 69.25], [106.97, 69.47], [106.75, 70.0], [106.85, 70.25], [106.75, 70.5], [106.97, 71.03]]]]}, "2016-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.97, 71.03], [107.32, 71.18], [107.47, 71.53], [108.0, 71.75], [108.25, 71.65], [108.5, 71.75], [108.75, 71.65], [108.82, 71.68], [108.97, 72.03], [109.32, 72.18], [109.47, 72.53], [109.82, 72.68], [109.97, 73.03], [110.32, 73.18], [110.47, 73.53], [111.0, 73.75], [111.25, 73.65], [111.5, 73.75], [111.75, 73.65], [111.82, 73.68], [111.97, 74.03], [112.5, 74.25], [112.75, 74.15], [113.0, 74.25], [113.25, 74.15], [113.38, 74.2], [113.25, 74.5], [113.47, 75.03], [114.0, 75.25], [114.25, 75.15], [114.5, 75.25], [114.75, 75.15], [115.0, 75.25], [115.25, 75.15], [115.32, 75.18], [115.47, 75.53], [116.0, 75.75], [116.53, 75.53], [116.68, 75.18], [117.03, 75.03], [117.18, 74.68], [117.53, 74.53], [117.68, 74.18], [117.75, 74.15], [118.0, 74.25], [118.25, 74.15], [118.5, 74.25], [118.75, 74.15], [118.82, 74.18], [118.97, 74.53], [119.32, 74.68], [119.47, 75.03], [120.0, 75.25], [120.25, 75.15], [120.32, 75.18], [120.47, 75.53], [121.0, 75.75], [121.25, 75.65], [121.5, 75.75], [121.75, 75.65], [122.0, 75.75], [122.25, 75.65], [122.5, 75.75], [122.75, 75.65], [123.0, 75.75], [123.25, 75.65], [123.5, 75.75], [123.75, 75.65], [124.0, 75.75], [124.53, 75.53], [124.75, 75.0], [124.53, 74.47], [124.0, 74.25], [123.75, 74.35], [123.5, 74.25], [123.25, 74.35], [123.0, 74.25], [122.75, 74.35], [122.68, 74.32], [122.53, 73.97], [122.0, 73.75], [121.75, 73.85], [121.5, 73.75], [121.25, 73.85], [121.18, 73.82], [121.03, 73.47], [120.5, 73.25], [120.25, 73.35], [120.0, 73.25], [119.75, 73.35], [119.68, 73.32], [119.53, 72.97], [119.0, 72.75], [118.75, 72.85], [118.5, 72.75], [118.25, 72.85], [118.18, 72.82], [118.03, 72.47], [117.5, 72.25], [117.25, 72.35], [117.0, 72.25], [116.75, 72.35], [116.5, 72.25], [116.25, 72.35], [116.0, 72.25], [115.75, 72.35], [115.68, 72.32], [115.53, 71.97], [115.0, 71.75], [114.75, 71.85], [114.68, 71.82], [114.65, 71.75], [114.75, 71.5], [114.65, 71.25], [114.75, 71.0], [114.65, 70.75], [114.68, 70.68], [114.75, 70.65], [114.82, 70.68], [114.97, 71.03], [115.5, 71.25], [115.75, 71.15], [116.0, 71.25], [116.53, 71.03], [116.68, 70.68], [116.75, 70.65], [117.0, 70.75], [117.25, 70.65], [117.5, 70.75], [117.75, 70.65], [118.0, 70.75], [118.25, 70.65], [118.5, 70.75], [119.03, 70.53], [119.18, 70.18], [119.25, 70.15], [119.5, 70.25], [119.75, 70.15], [120.0, 70.25], [120.53, 70.03], [120.68, 69.68], [121.03, 69.53], [121.18, 69.18], [121.25, 69.15], [121.5, 69.25], [121.75, 69.15], [122.0, 69.25], [122.53, 69.03], [122.75, 68.5], [122.53, 67.97], [122.18, 67.82], [122.15, 67.75], [122.18, 67.68], [122.53, 67.53], [122.75, 67.0], [122.65, 66.75], [122.75, 66.5], [122.53, 65.97], [122.0, 65.75], [121.75, 65.85], [121.5, 65.75], [121.25, 65.85], [121.0, 65.75], [120.75, 65.85], [120.5, 65.75], [120.25, 65.85], [120.0, 65.75], [119.75, 65.85], [119.5, 65.75], [119.25, 65.85], [119.0, 65.75], [118.75, 65.85], [118.5, 65.75], [117.97, 65.97], [117.82, 66.32], [117.75, 66.35], [117.5, 66.25], [117.25, 66.35], [117.0, 66.25], [116.75, 66.35], [116.5, 66.25], [116.25, 66.35], [116.0, 66.25], [115.75, 66.35], [115.5, 66.25], [115.25, 66.35], [115.0, 66.25], [114.47, 66.47], [114.32, 66.82], [114.25, 66.85], [114.0, 66.75], [113.47, 66.97], [113.32, 67.32], [113.25, 67.35], [113.0, 67.25], [112.75, 67.35], [112.5, 67.25], [111.97, 67.47], [111.82, 67.82], [111.47, 67.97], [111.32, 68.32], [111.25, 68.35], [111.0, 68.25], [110.47, 68.47], [110.32, 68.82], [109.97, 68.97], [109.82, 69.32], [109.47, 69.47], [109.32, 69.82], [109.25, 69.85], [109.18, 69.82], [109.03, 69.47], [108.5, 69.25], [108.25, 69.35], [108.0, 69.25], [107.75, 69.35], [107.5, 69.25], [106.97, 69.47], [106.75, 70.0], [106.85, 70.25], [106.75, 70.5], [106.97, 71.03]]]]}, "2016-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.97, 69.53], [111.5, 69.75], [111.75, 69.65], [112.0, 69.75], [112.25, 69.65], [112.5, 69.75], [112.75, 69.65], [113.0, 69.75], [113.25, 69.65], [113.38, 69.7], [113.25, 70.0], [113.47, 70.53], [114.0, 70.75], [114.25, 70.65], [114.5, 70.75], [114.75, 70.65], [114.82, 70.68], [114.97, 71.03], [115.5, 71.25], [115.75, 71.15], [116.0, 71.25], [116.53, 71.03], [116.68, 70.68], [116.75, 70.65], [117.0, 70.75], [117.25, 70.65], [117.5, 70.75], [117.75, 70.65], [118.0, 70.75], [118.25, 70.65], [118.5, 70.75], [119.03, 70.53], [119.18, 70.18], [119.25, 70.15], [119.5, 70.25], [119.75, 70.15], [120.0, 70.25], [120.53, 70.03], [120.68, 69.68], [121.03, 69.53], [121.18, 69.18], [121.25, 69.15], [121.5, 69.25], [121.75, 69.15], [122.0, 69.25], [122.53, 69.03], [122.75, 68.5], [122.53, 67.97], [122.18, 67.82], [122.15, 67.75], [122.18, 67.68], [122.53, 67.53], [122.75, 67.0], [122.65, 66.75], [122.75, 66.5], [122.53, 65.97], [122.0, 65.75], [121.75, 65.85], [121.5, 65.75], [121.25, 65.85], [121.0, 65.75], [120.75, 65.85], [120.5, 65.75], [120.25, 65.85], [120.0, 65.75], [119.75, 65.85], [119.5, 65.75], [119.25, 65.85], [119.0, 65.75], [118.75, 65.85], [118.5, 65.75], [117.97, 65.97], [117.82, 66.32], [117.75, 66.35], [117.5, 66.25], [117.25, 66.35], [117.0, 66.25], [116.75, 66.35], [116.5, 66.25], [116.25, 66.35], [116.0, 66.25], [115.75, 66.35], [115.5, 66.25], [115.25, 66.35], [115.0, 66.25], [114.47, 66.47], [114.32, 66.82], [114.25, 66.85], [114.0, 66.75], [113.47, 66.97], [113.32, 67.32], [113.25, 67.35], [113.0, 67.25], [112.75, 67.35], [112.5, 67.25], [111.97, 67.47], [111.82, 67.82], [111.47, 67.97], [111.32, 68.32], [110.97, 68.47], [110.75, 69.0], [110.97, 69.53]]], [[[119.25, 74.5], [119.47, 75.03], [120.0, 75.25], [120.25, 75.15], [120.32, 75.18], [120.47, 75.53], [121.0, 75.75], [121.25, 75.65], [121.5, 75.75], [121.75, 75.65], [122.0, 75.75], [122.25, 75.65], [122.5, 75.75], [122.75, 75.65], [123.0, 75.75], [123.25, 75.65], [123.5, 75.75], [123.75, 75.65], [124.0, 75.75], [124.53, 75.53], [124.75, 75.0], [124.53, 74.47], [124.0, 74.25], [123.75, 74.35], [123.5, 74.25], [123.25, 74.35], [123.0, 74.25], [122.75, 74.35], [122.5, 74.25], [122.25, 74.35], [122.18, 74.32], [122.03, 73.97], [121.5, 73.75], [121.25, 73.85], [121.0, 73.75], [120.75, 73.85], [120.5, 73.75], [120.25, 73.85], [120.0, 73.75], [119.47, 73.97], [119.25, 74.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.02434246910434}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.669671117996818}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.8108707325890805, 4.316333038722746, 4.866228517106947, 5.974773195119269]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.39719854212461314, -0.0032455266833153473, -0.2711303632080444, 0.24173973623339862]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.4971013108298425, -6.988279187845522, -6.397530249196335, -6.762332288922459]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.402050961379814, -10.02434246910434, -8.397344368344648, -8.292178272775573]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.706828948845752, -1.7749560329505722, -1.6211527471484501, -1.7368038202276372]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.197361576806056, -2.3584090567471248, -2.076995494934658, -2.1585948953859115]}}