Observations and modelling of the solar and terrestrial radiative effects of Saharan dust: a radiative closure case-study over oceans during the GERBILS campaign - Haywood, JM; Johnson, BT; Osborne, SR; Mulcahy, J; Brooks, ME; Harrison, MAJ; Milton, SF; Brindley, HE (QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 2011)