Ocean Pollution & Rainfall

  • Author: ChemistryViews
  • Published: 16 February 2011
thumbnail image: Ocean Pollution & Rainfall

A study by David Kadko and Joseph Prospero, University of Miami (UM), Rosenstiel School of Marine & Atmospheric Science, FL, USA, suggests a new way to estimate how much of the ocean's pollution is falling from the sky. These findings can help improve scientific understanding of how toxic airborne chemicals, from the burning of fossil fuels and industrial power plants emissions, are impacting the oceans globally.


Beryllium-7 (7Be) isotope is found naturally throughout Earth's atmosphere. It attaches itself, like man-made pollutants and other naturally occurring chemicals, to atmospheric dust particles and enters the ocean during rain events. Its distribution in ocean surface waters is used as tracer of upper ocean transport and atmospheric deposition processes.
By measuring the 7Be isotope concentrations in the ocean the scientists were able to provide a method to accurately estimate rainfall in remote regions of the ocean. The two-year study measured 7Be deposited in rain collectors at two sites in Bermuda and compared these estimates to those observed in the nearby Sargasso Sea.


The measurements are placed in a longer-term and large-scale spatial context by using climatological rainfall data on Bermuda and ocean rainfall estimates from the Global Precipitation Climatology Program and Tropical Rainfall Measuring Mission.


Article Views: 3050

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH