{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:44.869616", "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-Jul-02_to_2016-Jul-05_186.0_68.0"}, "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": 2016070000148}, "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": "July 02 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 05 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": 62728.80030751513}, "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": ["Chukchi 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": 68.0}, "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": 186.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "186.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 177.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 187.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 66.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 70.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[180.0, 70.75], [180.0, 69.25], [179.47, 69.47], [179.25, 70.0], [179.47, 70.53], [180.0, 70.75]]], [[[-179.47, 70.53], [-179.25, 70.0], [-179.47, 69.47], [-180.0, 69.25], [-180.0, 70.75], [-179.47, 70.53]]]]}, "2016-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[177.47, 69.47], [177.25, 70.0], [177.47, 70.53], [178.0, 70.75], [178.25, 70.65], [178.5, 70.75], [178.75, 70.65], [178.82, 70.68], [178.97, 71.03], [179.5, 71.25], [179.75, 71.15], [180.0, 71.25], [180.0, 68.75], [179.75, 68.85], [179.5, 68.75], [178.97, 68.97], [178.82, 69.32], [178.75, 69.35], [178.5, 69.25], [178.25, 69.35], [178.0, 69.25], [177.47, 69.47]]], [[[-179.75, 71.15], [-179.5, 71.25], [-179.25, 71.15], [-179.0, 71.25], [-178.75, 71.15], [-178.5, 71.25], [-178.25, 71.15], [-178.0, 71.25], [-177.47, 71.03], [-177.32, 70.68], [-177.25, 70.65], [-177.0, 70.75], [-176.5, 70.54], [-176.0, 70.75], [-175.75, 70.65], [-175.5, 70.75], [-174.97, 70.53], [-174.82, 70.18], [-174.47, 70.03], [-174.32, 69.68], [-173.97, 69.53], [-173.82, 69.18], [-173.47, 69.03], [-173.32, 68.68], [-172.97, 68.53], [-172.75, 68.0], [-172.85, 67.75], [-172.82, 67.68], [-172.47, 67.53], [-172.25, 67.0], [-172.47, 66.47], [-173.0, 66.25], [-173.25, 66.35], [-173.5, 66.25], [-174.0, 66.46], [-174.5, 66.25], [-175.03, 66.47], [-175.18, 66.82], [-175.53, 66.97], [-175.68, 67.32], [-176.03, 67.47], [-176.18, 67.82], [-176.25, 67.85], [-176.5, 67.75], [-177.03, 67.97], [-177.18, 68.32], [-177.25, 68.35], [-177.5, 68.25], [-177.75, 68.35], [-178.0, 68.25], [-178.53, 68.47], [-178.68, 68.82], [-178.75, 68.85], [-179.0, 68.75], [-179.25, 68.85], [-179.5, 68.75], [-179.75, 68.85], [-180.0, 68.75], [-180.0, 71.25], [-179.75, 71.15]]]]}, "2016-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[177.47, 69.47], [177.25, 70.0], [177.47, 70.53], [178.0, 70.75], [178.25, 70.65], [178.5, 70.75], [178.75, 70.65], [178.82, 70.68], [178.97, 71.03], [179.5, 71.25], [179.75, 71.15], [180.0, 71.25], [180.0, 68.75], [179.75, 68.85], [179.5, 68.75], [178.97, 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