University of Florida

Department of Geological Sciences

Skip to main Content   Search   Main Navigation   Quick Links   Resources   Website   Social   Address   What is this view

Main Navigation

Quick Links

GrAINFluxes – Greenland Atmospheric Isotopic and Nutrient Fluxes

Published: May 30th, 2017

Category: Featured, Front Page, News

A study aimed at developing a holistic understanding of weathering across forelands of retreating ice sheets.

GrAINFluxes – Greenland Atmospheric Isotopic and Nutrient Fluxes

GrAINFluxes – Greenland Atmospheric Isotopic and Nutrient Fluxes

Following the last glacial maximum about 20,000 yrs ago, ice sheets retreated from much of North America and Eurasia, leaving the Greenland Ice Sheet (GrIS) as the largest ice sheet in the northern hemisphere.  Chemical weathering of finely ground sediments exposed during the retreat of the ice sheets alters atmospheric CO2concentrations as well as nutrient and isotopic fluxes to the ocean.  The nutrient fluxes are likely to stimulate ocean productivity, further impacting atmospheric CO2, while the isotopic fluxes may produce a history of ice sheet dynamics that is preserved in marine sediments.

Most previous studies of weathering in the vicinity of the GrIS have focused on proglacial watersheds that receive dilute but high volumes of glacial meltwater from the top and underneath the ice sheet.  In contrast, deglacial watersheds that are no longer physically connected to the ice sheet and instead are sourced only by annual precipitation and permafrost melt have received little attention.  Yet, preliminary work from our group and others suggests deglacial watersheds may be equally or more important than proglacial watersheds for oceanic and atmospheric fluxes.

The Greenland Research Project at UF addresses the question of how mineral weathering reactions impact atmospheric CO2 and oceanic nutrient and isotope fluxes across proglacial and deglacial watersheds of western Greenland.  Results of the project have the potential to change our understanding of global CO2, nutrient, and isotope cycling in response to ice sheet collapse.  This understanding should inform predictions of future responses to global warming and ice sheet retreat and provide a context to interpret past high latitude ice sheet retreat and climate change based on marine isotope records.

Learn More at:

Tagged as: ,

Comments are currently closed.




Social links


What is this view?

You are using a dynamic assistive view of the University of Florida site. It has all the same data and features of the original site but formatted just with assistive users in mind. It has links and content reorganized to aid assistive users and has controls at the bottom under assistive options that allow you to control key aspects such as font size and contrast colors etc.
This is not a separate text-only site, it's a dynamic view that uses unique technology from Usablenet to give assistive users better, more accessible access to the same content and features as all users that use the graphic view of the site.

Assistive Options

Top of page

Assistive Options

Open the original version of this page.

Usablenet Assistive is a Usablenet product. Usablenet Assistive Main Page.