{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:39.868367", "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-17_to_2022-Oct-20_125.5_34.0"}, "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": 2022100000633}, "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 17 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 20 2022"}, "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": 506754.78300518077}, "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": ["South Korea"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "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": ["Eastern China Sea", "Japan Sea", "Yellow 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": 34.0}, "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": 125.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "125.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 121.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 129.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, 33.53], [121.32, 33.68], [121.47, 34.03], [122.0, 34.25], [122.25, 34.15], [122.32, 34.18], [122.35, 34.25], [122.25, 34.5], [122.47, 35.03], [123.0, 35.25], [123.25, 35.15], [123.5, 35.25], [123.75, 35.15], [123.82, 35.18], [123.97, 35.53], [124.5, 35.75], [124.75, 35.65], [124.82, 35.68], [124.97, 36.03], [125.5, 36.25], [125.75, 36.15], [125.82, 36.18], [125.85, 36.25], [125.75, 36.5], [125.97, 37.03], [126.38, 37.2], [126.25, 37.5], [126.47, 38.03], [127.0, 38.25], [127.5, 38.04], [128.0, 38.25], [128.25, 38.15], [128.5, 38.25], [129.03, 38.03], [129.25, 37.5], [129.15, 37.25], [129.25, 37.0], [129.15, 36.75], [129.25, 36.5], [129.15, 36.25], [129.25, 36.0], [129.13, 35.7], [129.25, 35.65], [129.5, 35.75], [130.03, 35.53], [130.25, 35.0], [130.03, 34.47], [129.68, 34.32], [129.65, 34.25], [129.75, 34.0], [129.65, 33.75], [129.75, 33.5], [129.65, 33.25], [129.75, 33.0], [129.53, 32.47], [129.18, 32.32], [129.15, 32.25], [129.25, 32.0], [129.15, 31.75], [129.25, 31.5], [129.03, 30.97], [128.5, 30.75], [128.25, 30.85], [128.18, 30.82], [128.03, 30.47], [127.5, 30.25], [127.25, 30.35], [127.18, 30.32], [127.03, 29.97], [126.68, 29.82], [126.65, 29.75], [126.75, 29.5], [126.53, 28.97], [126.18, 28.82], [126.03, 28.47], [125.68, 28.32], [125.65, 28.25], [125.75, 28.0], [125.53, 27.47], [125.18, 27.32], [125.03, 26.97], [124.5, 26.75], [124.25, 26.85], [124.18, 26.82], [124.03, 26.47], [123.68, 26.32], [123.53, 25.97], [123.0, 25.75], [122.47, 25.97], [122.25, 26.5], [122.46, 27.0], [122.32, 27.32], [122.25, 27.35], [122.0, 27.25], [121.47, 27.47], [121.25, 28.0], [121.46, 28.5], [121.25, 29.0], [121.47, 29.53], [121.82, 29.68], [121.85, 29.75], [121.82, 29.82], [121.47, 29.97], [121.25, 30.5], [121.35, 30.75], [121.25, 31.0], [121.35, 31.25], [121.25, 31.5], [121.35, 31.75], [121.32, 31.82], [120.97, 31.97], [120.75, 32.5], [120.85, 32.75], [120.75, 33.0], [120.97, 33.53]]]]}, "2022-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, 33.53], [121.32, 33.68], [121.47, 34.03], [122.0, 34.25], [122.25, 34.15], [122.32, 34.18], [122.35, 34.25], [122.25, 34.5], [122.47, 35.03], [123.0, 35.25], [123.25, 35.15], [123.5, 35.25], [123.75, 35.15], [123.82, 35.18], [123.97, 35.53], [124.5, 35.75], [124.75, 35.65], [124.82, 35.68], [124.97, 36.03], [125.5, 36.25], [125.75, 36.15], [125.82, 36.18], [125.85, 36.25], [125.75, 36.5], [125.97, 37.03], [126.38, 37.2], [126.25, 37.5], [126.47, 38.03], [127.0, 38.25], [127.5, 38.04], [128.0, 38.25], [128.25, 38.15], [128.5, 38.25], [129.03, 38.03], [129.25, 37.5], [129.15, 37.25], [129.25, 37.0], [129.15, 36.75], [129.25, 36.5], [129.15, 36.25], [129.25, 36.0], [129.13, 35.7], [129.25, 35.65], [129.5, 35.75], [130.03, 35.53], [130.25, 35.0], [130.03, 34.47], [129.68, 34.32], [129.65, 34.25], [129.75, 34.0], [129.65, 33.75], [129.75, 33.5], [129.65, 33.25], [129.75, 33.0], [129.53, 32.47], [129.18, 32.32], [129.15, 32.25], [129.25, 32.0], [129.15, 31.75], [129.25, 31.5], [129.03, 30.97], [128.5, 30.75], [128.25, 30.85], [128.18, 30.82], [128.03, 30.47], [127.5, 30.25], [127.25, 30.35], [127.18, 30.32], [127.03, 29.97], [126.68, 29.82], [126.65, 29.75], [126.75, 29.5], [126.53, 28.97], [126.18, 28.82], [126.03, 28.47], [125.68, 28.32], [125.65, 28.25], [125.75, 28.0], [125.53, 27.47], [125.18, 27.32], [125.03, 26.97], [124.5, 26.75], [124.25, 26.85], [124.18, 26.82], [124.03, 26.47], [123.68, 26.32], [123.53, 25.97], [123.0, 25.75], [122.47, 25.97], [122.25, 26.5], [122.46, 27.0], [122.32, 27.32], [122.25, 27.35], [122.0, 27.25], [121.47, 27.47], [121.25, 28.0], [121.46, 28.5], [121.25, 29.0], [121.47, 29.53], [121.82, 29.68], [121.85, 29.75], [121.82, 29.82], [121.47, 29.97], [121.25, 30.5], [121.35, 30.75], [121.25, 31.0], [121.35, 31.25], [121.25, 31.5], [121.35, 31.75], [121.32, 31.82], [120.97, 31.97], [120.75, 32.5], [120.85, 32.75], [120.75, 33.0], [120.97, 33.53]]]]}, "2022-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, 33.53], [121.32, 33.68], [121.47, 34.03], [122.0, 34.25], [122.25, 34.15], [122.32, 34.18], [122.35, 34.25], [122.25, 34.5], [122.47, 35.03], [123.0, 35.25], [123.25, 35.15], [123.5, 35.25], [123.75, 35.15], [123.82, 35.18], [123.97, 35.53], [124.5, 35.75], [124.75, 35.65], [124.82, 35.68], [124.97, 36.03], [125.5, 36.25], [125.75, 36.15], [125.82, 36.18], [125.85, 36.25], [125.75, 36.5], [125.97, 37.03], [126.38, 37.2], [126.25, 37.5], [126.47, 38.03], [127.0, 38.25], [127.5, 38.04], [128.0, 38.25], [128.25, 38.15], [128.5, 38.25], [129.03, 38.03], [129.25, 37.5], [129.15, 37.25], [129.25, 37.0], [129.15, 36.75], [129.25, 36.5], [129.15, 36.25], [129.25, 36.0], [129.13, 35.7], [129.25, 35.65], [129.5, 35.75], [130.03, 35.53], [130.25, 35.0], [130.03, 34.47], [129.68, 34.32], [129.65, 34.25], [129.75, 34.0], [129.65, 33.75], [129.75, 33.5], [129.65, 33.25], [129.75, 33.0], [129.53, 32.47], [129.18, 32.32], [129.15, 32.25], [129.25, 32.0], [129.15, 31.75], [129.25, 31.5], [129.03, 30.97], [128.5, 30.75], [128.25, 30.85], [128.18, 30.82], [128.03, 30.47], [127.5, 30.25], [127.25, 30.35], [127.18, 30.32], [127.03, 29.97], [126.68, 29.82], [126.65, 29.75], [126.75, 29.5], [126.53, 28.97], [126.18, 28.82], [126.03, 28.47], [125.68, 28.32], [125.65, 28.25], [125.75, 28.0], [125.53, 27.47], [125.18, 27.32], [125.03, 26.97], [124.5, 26.75], [124.25, 26.85], [124.18, 26.82], [124.03, 26.47], [123.68, 26.32], [123.53, 25.97], [123.0, 25.75], [122.47, 25.97], [122.25, 26.5], [122.46, 27.0], [122.32, 27.32], [122.25, 27.35], [122.0, 27.25], [121.47, 27.47], [121.25, 28.0], [121.46, 28.5], [121.25, 29.0], [121.47, 29.53], [121.82, 29.68], [121.85, 29.75], [121.82, 29.82], [121.47, 29.97], [121.25, 30.5], [121.35, 30.75], [121.25, 31.0], [121.35, 31.25], [121.25, 31.5], [121.35, 31.75], [121.32, 31.82], [120.97, 31.97], [120.75, 32.5], [120.85, 32.75], [120.75, 33.0], [120.97, 33.53]]]]}, "2022-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.0, 35.75], [128.53, 35.53], [128.75, 35.0], [128.53, 34.47], [128.0, 34.25], [127.47, 34.47], [127.25, 35.0], [127.47, 35.53], [128.0, 35.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.9783664417140585}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.2206938558531126}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.00348683632177, 16.123681793329183, 16.907172923510416, 12.917528924404621]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.70603576199602, 4.830204762477138, 5.369638091152581, 12.917528924404621]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.077130396922671, -3.771571301159486, -2.8130749530703247, -3.136284179850975]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.101757891730813, -6.9783664417140585, -5.861388979864273, -3.136284179850975]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9455345840816798, -2.327277997286449, -1.6885173861951948, -1.5846695393578456]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6631594238514733, -2.8157251059075934, -2.283805449637262, -1.5846695393578456]}}