{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:34.123434", "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": "2022-Oct-15_to_2022-Oct-24_156.5_61.0"}, "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": 2022100000655}, "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": "October 15 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 24 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 178383.32269272907}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["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": 61.0}, "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": 156.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "156.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 151.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 162.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[150.75, 59.0], [150.97, 59.53], [151.5, 59.75], [151.8, 59.63], [151.97, 60.03], [152.5, 60.25], [152.75, 60.15], [153.0, 60.25], [153.25, 60.15], [153.5, 60.25], [153.75, 60.15], [154.0, 60.25], [154.25, 60.15], [154.32, 60.18], [154.47, 60.53], [154.82, 60.68], [154.97, 61.03], [155.32, 61.18], [155.47, 61.53], [156.0, 61.75], [156.25, 61.65], [156.32, 61.68], [156.47, 62.03], [157.0, 62.25], [157.53, 62.03], [157.68, 61.68], [158.03, 61.53], [158.25, 61.0], [158.15, 60.75], [158.18, 60.68], [158.25, 60.65], [158.5, 60.75], [158.75, 60.65], [159.0, 60.75], [159.53, 60.53], [159.75, 60.0], [159.65, 59.75], [159.7, 59.63], [159.82, 59.68], [159.97, 60.03], [160.5, 60.25], [160.75, 60.15], [160.82, 60.18], [160.97, 60.53], [161.5, 60.75], [161.75, 60.65], [162.0, 60.75], [162.53, 60.53], [162.75, 60.0], [162.53, 59.47], [162.0, 59.25], [161.75, 59.35], [161.68, 59.32], [161.53, 58.97], [161.18, 58.82], [161.03, 58.47], [160.68, 58.32], [160.65, 58.25], [160.75, 58.0], [160.53, 57.47], [160.0, 57.25], [159.47, 57.47], [159.32, 57.82], [159.25, 57.85], [159.0, 57.75], [158.5, 57.96], [158.18, 57.82], [158.03, 57.47], [157.5, 57.25], [157.25, 57.35], [157.18, 57.32], [157.03, 56.97], [156.5, 56.75], [156.25, 56.85], [156.0, 56.75], [155.75, 56.85], [155.68, 56.82], [155.65, 56.75], [155.75, 56.5], [155.65, 56.25], [155.75, 56.0], [155.53, 55.47], [155.0, 55.25], [154.75, 55.35], [154.5, 55.25], [154.25, 55.35], [154.0, 55.25], [153.47, 55.47], [153.25, 56.0], [153.35, 56.25], [153.32, 56.32], [153.25, 56.35], [153.0, 56.25], [152.75, 56.35], [152.5, 56.25], [152.25, 56.35], [152.0, 56.25], [151.75, 56.35], [151.5, 56.25], [150.97, 56.47], [150.82, 56.82], [150.47, 56.97], [150.25, 57.5], [150.35, 57.75], [150.25, 58.0], [150.47, 58.53], [150.82, 58.68], [150.85, 58.75], [150.75, 59.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[156.47, 62.03], [157.0, 62.25], [157.53, 62.03], [157.75, 61.5], [157.53, 60.97], [157.18, 60.82], [157.03, 60.47], [156.5, 60.25], [155.97, 60.47], [155.75, 61.0], [155.97, 61.53], [156.32, 61.68], [156.47, 62.03]]]]}, "2022-10-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[156.47, 62.03], [157.0, 62.25], [157.53, 62.03], [157.75, 61.5], [157.53, 60.97], [157.18, 60.82], [157.03, 60.47], [156.5, 60.25], [155.97, 60.47], [155.75, 61.0], [155.97, 61.53], [156.32, 61.68], [156.47, 62.03]]]]}, "2022-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[156.47, 62.03], [157.0, 62.25], [157.53, 62.03], [157.75, 61.5], [157.53, 60.97], [157.18, 60.82], [157.03, 60.47], [156.5, 60.25], [155.97, 60.47], [155.75, 61.0], [155.97, 61.53], [156.32, 61.68], [156.47, 62.03]]]]}, "2022-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.25, 58.0], [150.47, 58.53], [150.82, 58.68], [150.85, 58.75], [150.75, 59.0], [150.97, 59.53], [151.5, 59.75], [152.0, 59.54], [152.5, 59.75], [152.75, 59.65], [153.0, 59.75], [153.25, 59.65], [153.5, 59.75], [153.75, 59.65], [154.0, 59.75], [154.25, 59.65], [154.32, 59.68], [154.35, 59.75], [154.25, 60.0], [154.47, 60.53], [155.0, 60.75], [155.25, 60.65], [155.32, 60.68], [155.47, 61.03], [155.82, 61.18], [155.97, 61.53], [156.5, 61.75], [156.75, 61.65], [157.0, 61.75], [157.53, 61.53], [157.75, 61.0], [157.65, 60.75], [157.75, 60.5], [157.53, 59.97], [157.18, 59.82], [157.03, 59.47], [156.68, 59.32], [156.54, 59.0], [156.75, 58.5], [156.53, 57.97], [156.18, 57.82], [156.03, 57.47], [155.68, 57.32], [155.65, 57.25], [155.75, 57.0], [155.65, 56.75], [155.75, 56.5], [155.65, 56.25], [155.75, 56.0], [155.53, 55.47], [155.0, 55.25], [154.75, 55.35], [154.5, 55.25], [154.25, 55.35], [154.0, 55.25], [153.47, 55.47], [153.25, 56.0], [153.35, 56.25], [153.32, 56.32], [153.25, 56.35], [153.0, 56.25], [152.75, 56.35], [152.5, 56.25], [152.25, 56.35], [152.0, 56.25], [151.75, 56.35], [151.5, 56.25], [150.97, 56.47], [150.82, 56.82], [150.47, 56.97], [150.25, 57.5], [150.35, 57.75], [150.25, 58.0]]]]}, "2022-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.25, 58.0], [150.47, 58.53], [150.82, 58.68], [150.85, 58.75], [150.75, 59.0], [150.97, 59.53], [151.5, 59.75], [152.0, 59.54], [152.5, 59.75], [152.75, 59.65], [153.0, 59.75], [153.25, 59.65], [153.32, 59.68], [153.47, 60.03], [154.0, 60.25], [154.25, 60.15], [154.32, 60.18], [154.47, 60.53], [154.82, 60.68], [154.97, 61.03], [155.5, 61.25], [155.75, 61.15], [155.82, 61.18], [155.97, 61.53], [156.5, 61.75], [156.75, 61.65], [157.0, 61.75], [157.25, 61.65], [157.5, 61.75], [158.03, 61.53], [158.25, 61.0], [158.15, 60.75], [158.18, 60.68], [158.25, 60.65], [158.5, 60.75], [159.03, 60.53], [159.18, 60.18], [159.53, 60.03], [159.75, 59.5], [159.53, 58.97], [159.18, 58.82], [159.03, 58.47], [158.68, 58.32], [158.53, 57.97], [158.18, 57.82], [158.03, 57.47], [157.5, 57.25], [157.25, 57.35], [157.18, 57.32], [157.03, 56.97], [156.5, 56.75], [156.25, 56.85], [156.0, 56.75], [155.75, 56.85], [155.68, 56.82], [155.65, 56.75], [155.75, 56.5], [155.65, 56.25], [155.75, 56.0], [155.53, 55.47], [155.0, 55.25], [154.75, 55.35], [154.5, 55.25], [154.25, 55.35], [154.0, 55.25], [153.47, 55.47], [153.25, 56.0], [153.35, 56.25], [153.32, 56.32], [153.25, 56.35], [153.0, 56.25], [152.75, 56.35], [152.5, 56.25], [152.25, 56.35], [152.0, 56.25], [151.75, 56.35], [151.5, 56.25], [150.97, 56.47], [150.82, 56.82], [150.47, 56.97], [150.25, 57.5], [150.35, 57.75], [150.25, 58.0]]]]}, "2022-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.25, 58.0], [150.47, 58.53], [150.82, 58.68], [150.85, 58.75], [150.75, 59.0], [150.97, 59.53], [151.5, 59.75], [152.0, 59.54], [152.32, 59.68], [152.47, 60.03], [153.0, 60.25], [153.25, 60.15], [153.5, 60.25], [153.75, 60.15], [154.0, 60.25], [154.25, 60.15], [154.32, 60.18], [154.47, 60.53], [154.82, 60.68], [154.97, 61.03], [155.5, 61.25], [155.75, 61.15], [155.82, 61.18], [155.97, 61.53], [156.5, 61.75], [156.75, 61.65], [157.0, 61.75], [157.25, 61.65], [157.5, 61.75], [158.03, 61.53], [158.25, 61.0], [158.15, 60.75], [158.18, 60.68], [158.25, 60.65], [158.5, 60.75], [158.75, 60.65], [159.0, 60.75], [159.53, 60.53], [159.75, 60.0], [159.65, 59.75], [159.75, 59.5], [159.53, 58.97], [159.18, 58.82], [159.03, 58.47], [158.68, 58.32], [158.53, 57.97], [158.18, 57.82], [158.03, 57.47], [157.5, 57.25], [157.25, 57.35], [157.18, 57.32], [157.03, 56.97], [156.5, 56.75], [156.25, 56.85], [156.0, 56.75], [155.75, 56.85], [155.68, 56.82], [155.65, 56.75], [155.75, 56.5], [155.65, 56.25], [155.75, 56.0], [155.53, 55.47], [155.0, 55.25], [154.75, 55.35], [154.5, 55.25], [154.25, 55.35], [154.0, 55.25], [153.47, 55.47], [153.25, 56.0], [153.35, 56.25], [153.32, 56.32], [153.25, 56.35], [153.0, 56.25], [152.75, 56.35], [152.5, 56.25], [152.25, 56.35], [152.0, 56.25], [151.75, 56.35], [151.5, 56.25], [150.97, 56.47], [150.82, 56.82], [150.47, 56.97], [150.25, 57.5], [150.35, 57.75], [150.25, 58.0]]]]}, "2022-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[160.0, 57.25], [159.47, 57.47], [159.25, 58.0], [159.47, 58.53], [160.0, 58.75], [160.53, 58.53], [160.75, 58.0], [160.53, 57.47], [160.0, 57.25]]], [[[150.85, 58.75], [150.75, 59.0], [150.97, 59.53], [151.5, 59.75], [151.8, 59.63], [151.97, 60.03], [152.5, 60.25], [152.75, 60.15], [153.0, 60.25], [153.25, 60.15], [153.5, 60.25], [153.75, 60.15], [154.0, 60.25], [154.25, 60.15], [154.32, 60.18], [154.47, 60.53], [154.82, 60.68], [154.97, 61.03], [155.32, 61.18], [155.47, 61.53], [156.0, 61.75], [156.25, 61.65], [156.5, 61.75], [156.75, 61.65], [157.0, 61.75], [157.25, 61.65], [157.5, 61.75], [158.03, 61.53], [158.25, 61.0], [158.15, 60.75], [158.18, 60.68], [158.25, 60.65], [158.5, 60.75], [158.75, 60.65], [159.0, 60.75], [159.53, 60.53], [159.75, 60.0], [159.65, 59.75], [159.75, 59.5], [159.53, 58.97], [159.18, 58.82], [159.03, 58.47], [158.68, 58.32], [158.53, 57.97], [158.18, 57.82], [158.03, 57.47], [157.5, 57.25], [157.25, 57.35], [157.18, 57.32], [157.03, 56.97], [156.5, 56.75], [156.25, 56.85], [156.0, 56.75], [155.75, 56.85], [155.68, 56.82], [155.53, 56.47], [155.0, 56.25], [154.47, 56.47], [154.32, 56.82], [154.25, 56.85], [154.0, 56.75], [153.75, 56.85], [153.5, 56.75], [153.25, 56.85], [153.0, 56.75], [152.75, 56.85], [152.5, 56.75], [151.97, 56.97], [151.82, 57.32], [151.75, 57.35], [151.5, 57.25], [150.97, 57.47], [150.75, 58.0], [150.85, 58.25], [150.75, 58.5], [150.85, 58.75]]]]}, "2022-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.97, 60.03], [152.5, 60.25], [152.75, 60.15], [153.0, 60.25], [153.25, 60.15], [153.5, 60.25], [153.75, 60.15], [154.0, 60.25], [154.25, 60.15], [154.32, 60.18], [154.47, 60.53], [154.82, 60.68], [154.97, 61.03], [155.32, 61.18], [155.47, 61.53], [156.0, 61.75], [156.25, 61.65], [156.5, 61.75], [156.75, 61.65], [157.0, 61.75], [157.25, 61.65], [157.5, 61.75], [158.03, 61.53], [158.25, 61.0], [158.07, 60.57], [158.5, 60.75], [158.75, 60.65], [159.0, 60.75], [159.53, 60.53], [159.75, 60.0], [159.57, 59.57], [159.82, 59.68], [159.97, 60.03], [160.5, 60.25], [160.75, 60.15], [160.82, 60.18], [160.97, 60.53], [161.5, 60.75], [161.75, 60.65], [162.0, 60.75], [162.53, 60.53], [162.75, 60.0], [162.53, 59.47], [162.0, 59.25], [161.75, 59.35], [161.68, 59.32], [161.53, 58.97], [161.18, 58.82], [161.03, 58.47], [160.68, 58.32], [160.65, 58.25], [160.75, 58.0], [160.53, 57.47], [160.0, 57.25], [159.47, 57.47], [159.32, 57.82], [159.25, 57.85], [159.0, 57.75], [158.47, 57.97], [158.25, 58.5], [158.38, 58.8], [158.25, 58.85], [158.18, 58.82], [158.03, 58.47], [157.5, 58.25], [157.25, 58.35], [157.0, 58.25], [156.75, 58.35], [156.5, 58.25], [156.25, 58.35], [156.18, 58.32], [156.03, 57.97], [155.5, 57.75], [155.2, 57.88], [155.03, 57.47], [154.5, 57.25], [153.97, 57.47], [153.82, 57.82], [153.75, 57.85], [153.5, 57.75], [153.25, 57.85], [153.0, 57.75], [152.47, 57.97], [152.25, 58.5], [152.35, 58.75], [152.32, 58.82], [152.2, 58.88], [152.03, 58.47], [151.5, 58.25], [150.97, 58.47], [150.75, 59.0], [150.97, 59.53], [151.5, 59.75], [151.8, 59.63], [151.97, 60.03]], [[159.32, 59.18], [159.43, 59.43], [159.18, 59.32], [159.13, 59.2], [159.25, 59.15], [159.32, 59.18]]]]}, "2022-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[158.47, 57.97], [158.25, 58.5], [158.47, 59.03], [159.0, 59.25], [159.25, 59.15], [159.32, 59.18], [159.47, 59.53], [159.82, 59.68], [159.97, 60.03], [160.5, 60.25], [160.75, 60.15], [160.82, 60.18], [160.97, 60.53], [161.5, 60.75], [161.75, 60.65], [162.0, 60.75], [162.53, 60.53], [162.75, 60.0], [162.53, 59.47], [162.0, 59.25], [161.75, 59.35], [161.68, 59.32], [161.53, 58.97], [161.18, 58.82], [161.03, 58.47], [160.68, 58.32], [160.65, 58.25], [160.75, 58.0], [160.53, 57.47], [160.0, 57.25], [159.47, 57.47], [159.32, 57.82], [159.25, 57.85], [159.0, 57.75], [158.47, 57.97]]], [[[151.75, 59.5], [151.97, 60.03], [152.5, 60.25], [152.75, 60.15], [153.0, 60.25], [153.25, 60.15], [153.5, 60.25], [153.75, 60.15], [154.0, 60.25], [154.53, 60.03], [154.75, 59.5], [154.53, 58.97], [154.18, 58.82], [154.03, 58.47], [153.5, 58.25], [152.97, 58.47], [152.82, 58.82], [152.75, 58.85], [152.5, 58.75], [151.97, 58.97], [151.75, 59.5]]], [[[156.25, 61.65], [156.5, 61.75], [156.75, 61.65], [157.0, 61.75], [157.53, 61.53], [157.75, 61.0], [157.53, 60.47], [157.18, 60.32], [157.03, 59.97], [156.5, 59.75], [156.0, 59.96], [155.5, 59.75], [154.97, 59.97], [154.75, 60.5], [154.97, 61.03], [155.32, 61.18], [155.47, 61.53], [156.0, 61.75], [156.25, 61.65]]]]}, "2022-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[159.0, 57.75], [158.47, 57.97], [158.25, 58.5], [158.47, 59.03], [159.0, 59.25], [159.25, 59.15], [159.32, 59.18], [159.47, 59.53], [159.82, 59.68], [159.97, 60.03], [160.5, 60.25], [160.75, 60.15], [160.82, 60.18], [160.97, 60.53], [161.5, 60.75], [161.75, 60.65], [162.0, 60.75], [162.53, 60.53], [162.75, 60.0], [162.53, 59.47], [162.0, 59.25], [161.75, 59.35], [161.68, 59.32], [161.53, 58.97], [161.18, 58.82], [161.03, 58.47], [160.68, 58.32], [160.53, 57.97], [160.0, 57.75], [159.75, 57.85], [159.5, 57.75], [159.25, 57.85], [159.0, 57.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.356286736419406}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.6378039785183205}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-5.337790810055026, -7.138002443583446, -5.7365387118427975, -1.072191168370182, -2.256046704315395, -1.963648470781095, -2.4244520104686558, -4.628556277918847, -8.806442017260053, -7.57936005282528]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-7.317104937931958, -9.39997811722509, -8.198875336135245, -5.104099636844182, -9.683550739688542, -12.106179604530212, -12.516923349517299, -13.609380234289972, -14.509599935641575, -9.940018830366228]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.168818551982042, -6.8402540770850635, -5.225683911139953, -4.076149444168572, -4.970396559750579, -4.324592706138262, -4.076588428237197, -4.89861179916284, -6.873247117411301, -6.403267237654379]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.054655418459731, -7.992467716503143, -6.559261807223038, -5.505856147781117, -7.227037204344356, -8.717325728058597, -9.199345829710524, -9.552925240430454, -11.356286736419406, -8.155929154666524]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7357292259296973, -2.266351038667562, -1.6626399060577888, -1.880293653277086, -2.2385715688036885, -1.8338339649533582, -1.62682297459582, -1.6611040231772496, -1.9337976397210883, -1.9564170732189612]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8336548189796171, -2.369022993163418, -1.8807098856079558, -2.3706266095833155, -3.0931237387461303, -2.51388351196321, -2.1337777226485, -2.7018780394233226, -3.0246381928078243, -2.6374414431660056]}}