Terrestrial lipid detritus has been found in some pelagic sediments at great distances from
land (for example, in the North Atlantic) and aeolian transport has been invoked as one input …

Atmospheric aerosols exert an important influence on climate through their effects on
stratiform cloud albedo and lifetime and the invigoration of convective storms. Model …

AIRBORNE mineral dust can have a significant effect on the Earth's radiation budget, as it
can both scatter sunlight back to space (leading to negative radiative forcing), and absorb …

CHEMICAL depletion of ozone in the lower stratosphere decreases the direct radiative
forcing from greenhouse gases in the atmosphere1. Here we show that ozone depletion …

WHEN fossil fuel is burned, both carbon dioxide and sulphur dioxide are added to the
atmosphere. The former should cause warming of the lower atmosphere by enhancing the …

OXYGENATED species in the atmosphere are important sources of free radicals and are
intricately linked with the fate of nitrogen oxides (NO x), which are themselves necessary for …

Hydrogen peroxide, a powerful oxidant, is believed to be a key component in the oxidation
of SO2 to H2SO4 in clouds1. The first quantitative H2O2 measurements in snow, rain …

In cirrus and orographic wave clouds, highly supercooled water has been observed in small
quantities (less than 0.15 g m-3). This high degree of supercooling was attributed to the …

HETEROGENEOUS chemical reactions on the surfaces of solid or liquid particles present in
the lower stratosphere may be an important influence on the levels of ozone depletion …

AIRBORNE particulates have a major role in the air pollution problem. They are responsible
for acid rain, reduced visibility, and, in certain size ranges, are deposited in the lungs where …