{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:58.430589", "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": "2011-Jul-31_to_2011-Aug-05_121.0_38.0"}, "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": 2011070001676}, "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 31 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 05 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 58407.30991009658}, "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": ["China"]}, "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": ["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": 38.0}, "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": 121.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "121.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.75}, "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": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.25, 38.0], [120.47, 38.53], [121.0, 38.75], [121.25, 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37.35], [121.0, 37.25], [120.47, 37.47]]]]}, "2011-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.82, 37.82], [118.47, 37.97], [118.25, 38.5], [118.47, 39.03], [118.82, 39.18], [118.97, 39.53], [119.5, 39.75], [119.75, 39.65], [120.0, 39.75], [120.53, 39.53], [120.68, 39.18], [121.03, 39.03], [121.18, 38.68], [121.25, 38.65], [121.32, 38.68], [121.47, 39.03], [122.0, 39.25], [122.53, 39.03], [122.68, 38.68], [122.75, 38.65], [122.82, 38.68], [122.97, 39.03], [123.5, 39.25], [124.03, 39.03], [124.18, 38.68], [124.53, 38.53], [124.75, 38.0], [124.53, 37.47], [124.0, 37.25], [123.75, 37.35], [123.5, 37.25], [123.25, 37.35], [123.18, 37.32], [123.03, 36.97], [122.5, 36.75], [122.25, 36.85], [122.0, 36.75], [121.75, 36.85], [121.5, 36.75], [120.97, 36.97], [120.82, 37.32], [120.75, 37.35], [120.68, 37.32], [120.53, 36.97], [120.0, 36.75], [119.75, 36.85], [119.68, 36.82], [119.53, 36.47], [119.0, 36.25], [118.47, 36.47], [118.25, 37.0], [118.47, 37.53], [118.82, 37.68], [118.85, 37.75], [118.82, 37.82]]]]}, "2011-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.82, 37.82], [118.47, 37.97], [118.25, 38.5], [118.47, 39.03], [118.82, 39.18], [118.97, 39.53], [119.5, 39.75], [119.75, 39.65], [120.0, 39.75], [120.53, 39.53], [120.68, 39.18], [121.03, 39.03], [121.18, 38.68], [121.25, 38.65], [121.32, 38.68], [121.47, 39.03], [122.0, 39.25], [122.53, 39.03], [122.68, 38.68], [122.75, 38.65], [122.82, 38.68], [122.97, 39.03], [123.5, 39.25], [124.03, 39.03], [124.25, 38.5], [124.15, 38.25], [124.25, 38.0], [124.03, 37.47], [123.5, 37.25], [123.25, 37.35], [123.18, 37.32], [123.03, 36.97], [122.5, 36.75], [122.25, 36.85], [122.0, 36.75], [121.75, 36.85], [121.5, 36.75], [120.97, 36.97], [120.82, 37.32], [120.75, 37.35], [120.68, 37.32], [120.53, 36.97], [120.0, 36.75], [119.75, 36.85], [119.68, 36.82], [119.53, 36.47], [119.0, 36.25], [118.47, 36.47], [118.25, 37.0], [118.47, 37.53], [118.82, 37.68], [118.85, 37.75], [118.82, 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"anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5986286357405064, -1.5119069276380204, -1.9414480213655922, -2.317814462730832, -2.021608573023128, -1.6143985993723076]}}