id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_biz4hihwu5cytoqwuipap3vo3m	Forrest M. Mims	Solar aureoles caused by dust, smoke, and haze	2003.0	5	.pdf	application/pdf	3710	326	70	Solar aureoles caused by dust, smoke, and haze Solar aureoles caused by dust, smoke, and haze Simple methods can be used to photograph the solar aureole with conventional and digital cameras. Yet the solar aureole is among the least observed optical phenomena in the sky because of its The solar aureole is caused by the forward scattering of sunlight by aerosols. methods for its safe observation.1 Coulson spectroscopically measured solar aureoles in the clear sky �a� Aureole-free Sun photographed from the 4.3-km summit of Mauna Kea in Hawaii on 24 June 2000 �AOT820 nm � 0.02�. �e� Broadly diffuse aureole and bluish sky caused by smoke from Mexico advected over Texas on 5 May 2000 �AOT820 nm � 0.36�. �e� Disk-shaped aureole and grayish sky formed by Sahara dust blown from Africa to Texas on 4 July 2000 �AOT820 nm � 0.24�. the Sun for the solar aureoles in Figs.	./cache/work_biz4hihwu5cytoqwuipap3vo3m.pdf	./txt/work_biz4hihwu5cytoqwuipap3vo3m.txt