[OANNES Foro] Are ocean deserts getting larger?

[Raul Sanchez Scaglioni]

Are ocean deserts getting larger?
 
Andrew J. Irwin
Department of Mathematics and Computer Science, Mount Allison University, Sackville, New Brunswick, Canada
Matthew J. Oliver
School of Marine Science and Policy, College of Earth Ocean and Environment, University of Delaware, Lewes, Delaware, USA

The spatial and temporal dynamics of ocean biomes and their provincial subdivisions are affected by the dynamics of Earth's climate system, but the effect of climate change on the distribution and variability of ocean biomes and provinces is largely unknown. A time-series analysis from multiple satellite platforms shows that the lowest productivity provinces have been growing over the last decade and that the growth rates of these provinces increase as they get larger, and decrease as they get smaller. The most oligotrophic provinces of the ocean grow by reducing the size of the slightly less oligotrophic provinces. As a consequence, while the ocean's most extreme deserts are increasing at an accelerating rate, some oligotrophic areas are simultaneously shrinking. The aggregate area of the oligotrophic provinces oscillated in phase with the Pacific Decadal Oscillation Index from 1998–2007. 

Received 1 July 2009; accepted 19 August 2009; published 26 September 2009. 
Citation: Irwin, A. J., and M. J. Oliver (2009), Are ocean deserts getting larger?, Geophys. Res. Lett., 36, L18609, doi:10.1029/2009GL039883. 
 
saludos cordiales
 
Raul E. Sánchez Scaglioni


      
------------ próxima parte ------------
Se ha borrado un adjunto en formato HTML...
URL: <http://lista.oannes.org.pe/pipermail/oannes-oannes.org.pe/attachments/20091010/255a4791/attachment.htm>