The MISR sensor consists of nine pushbroom cameras, one viewing the nadir (vertically downward) direction (designated An) and four each viewing the forward and backward directions along the spacecraft ground track, labelled Df, Cf, Bf, Af, and Aa, Ba, Ca, Da, respectively. The corresponding viewing zenith angles are: 70.5° (Df, Da), 60° (Cf, Ca), 45.6° (Bf, Ba), 26.1° (Af, Aa) and 0° (An). The overall time delay, between the Df and Da cameras, is 7 min. It observes the Earth in four visible and near infrared (NIR) spectral bands (446, 558, 672, and 866 nm), with a cross-track ground spatial resolution of 275 m–1.1 km. Only images sampled at medium-resolution (275 m) were used in this study, i.e. the red band (672 nm) at all nine view angles, and the four spectral bands at nadir view. The MISR swath width is 380 km (cross-track).