Showing posts with label Earth-system. Show all posts
Showing posts with label Earth-system. Show all posts

Saturday, June 13, 2009

Feedbacks and Interactions between Global Change...

Feedbacks and Interactions between Global Change, Atmospheric Chemistry, and the Biosphere.

A very thought provoking review paper from the Max Planck Institute for Chemistry (Otto Hahn Institute) Biogeochemistry Department, Germany. The research in by Professor Andreae's et al and is closely tied to the International Biosphere/Geosphere Program, and involves a high amount of international collaboration.
http://www.mpch-mainz.mpg.de/~biogeo/feedbacks.htm

And check out the amazingly detailed diagram: CONCEPTUAL MODEL of Earth System process operating on timescales of decades to centuries. You may discover a lot of existing and potential feedbacks. (negative or positive...)

Here is a simplified, nicely colored overview of that diagram via NASA (1988)

Earth Systems Science: an Overview

Thursday, March 15, 2007

Sea level could rise faster while Antarctic gains mass

Hot off the press are some interesting findings.

In brief:
If iceberg calving in the Antartic (huge chunks braking off the ice shelves) continue at current rate, glaciers could get involved. It appears that, if unencumbered, they slip faster into sea, then previously thought. This could far accelerate sea level rise beyond the currently projected 28-43 cm over the next 100 years.
However, overall, the Antarctic is not likely to loose ice mass. Instead it will gain from more intense precipitation in the form of snow fall. Also, widespread thawing of the Antarctic is not likely due to the extreme cold.
This current finding seems to support the idea that the Atlantic sea mass and currents are at greater risk of widespred change then the Pacific. For that reason too, when it comes to regulating oceanic changes, Earth agmentation should start at the Gulf. Check out this article on the subject.

http://www.sustdev.org/index.php?option=content&task=view&id=1708