Based on variational adjoint methods,theoretical analyses and numerical experiments are performed for retrievals of two-dimensional winds and related parameters from single-Doppler radar data in polar coordinates.In t...Based on variational adjoint methods,theoretical analyses and numerical experiments are performed for retrievals of two-dimensional winds and related parameters from single-Doppler radar data in polar coordinates.In the method,the reflectivity conservation equation is used as the governing equation and the mass continuity equation as a weak constraint.At the same time,the stable functional of regularization and background field are also introduced in the cost functional.Based on the ideal experiments with artificial data,real two-dimensional wind fields are retrieved with low-altitude data from the Nanjing Doppler Radar Station,and the results are encouraging and promising.展开更多
基金supported by the National Key Technologies R and D Program of China during the 11th Five-year Plan Period(Grant No. 2008BAC37B03)
文摘Based on variational adjoint methods,theoretical analyses and numerical experiments are performed for retrievals of two-dimensional winds and related parameters from single-Doppler radar data in polar coordinates.In the method,the reflectivity conservation equation is used as the governing equation and the mass continuity equation as a weak constraint.At the same time,the stable functional of regularization and background field are also introduced in the cost functional.Based on the ideal experiments with artificial data,real two-dimensional wind fields are retrieved with low-altitude data from the Nanjing Doppler Radar Station,and the results are encouraging and promising.
