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We present a Raman scattering study of wurtzite over a temperature range from 80 to . Second-order Raman features are interpreted in the light of recent ab initio phonon density of states calculations. The temperature dependence of the Raman intensities allows the assignment of difference modes to be made unambiguously. Some weak, sharp Raman peaks are detected whose temperature dependence suggests they may be due to impurity modes. High-resolution spectra of the , , and modes were recorded, and an analysis of the anharmonicity and lifetimes of these phonons is carried out. The mode displays a visibly asymmetric line shape. This can be attributed to anharmonic interaction with transverse and longitudinal acoustic phonon combinations in the vicinity of the point, where the two-phonon density of states displays a sharp edge around the frequency. The temperature …