%K applied, transport, Turbulence %N 17 %T Turbulence, spatial transport, and heating of the solar wind %D 1999 %P 3444 - 3447 %V 82 %O © 1999 The American Physical Society %A WH Matthaeus %A GP Zank %A CW Smith %A S Oughton %J Physical Review Letters %L discovery172652 %X A phenomenological theory describes radial evolution of plasma turbulence in the solar wind from 1 to 50 astronomical units. The theory includes a simple closure for local anisotropic magnetohydrodynamic turbulence, spatial transport, and driving by large-scale shear and pickup ions. Results compare well to plasma and magnetic field data from the Voyager 2 spacecraft, providing a basis for a concise, tractable description of turbulent energy transport in a variety of astrophysical plasmas.