The cycling of carbon on Earth exerts a fundamental influence upon the greenhouse gas
content of the atmosphere, and hence global climate over millennia. Until recently, ice …

The silicon isotope composition of biogenic silica (δ 30 Si BSi) in the ocean is a function of
the δ 30 Si of the available dissolved Si (DSi; H 2 SiO 4), the degree of utilisation of the …

Freshwater discharge from glaciers is increasing across the Arctic in response to
anthropogenic climate change, which raises questions about the potential downstream …

Liquid water has been known to occur beneath the Antarctic ice sheet for more than 40
years, but only recently have these subglacial aqueous environments been recognized as …

Abstract The Greenland and Antarctic Ice Sheets cover~\n10% of global land surface, but
are rarely considered as active components of the global iron cycle. The ocean waters …

Physical erosion and chemical weathering rates beneath glaciers are expected to increase
in a warming climate with enhanced melting but are poorly constrained. We present a global …

The contribution of ice sheets to the global biogeochemical cycle of phosphorus is largely
unknown, due to the lack of field data. Here we present the first comprehensive study of …

The discharge of nutrient-rich meltwater from the Greenland Ice Sheet has emerged as a
potentially important contributor to regional marine primary production and nutrient cycling …

Ice sheets play a more important role in the global silicon cycle than previously appreciated.
Input of dissolved and amorphous particulate silica into natural waters stimulates the growth …

Trace elements sustain biological productivity, yet the significance of trace element
mobilization and export in subglacial runoff from ice sheets is poorly constrained at present …