Monday, July 29, 2013

Warmest Decade


Temperature data from four international science institutions. All show rapid warming in the past few decades and that the last decade has been the warmest on record.
Temperature data from four international science institutions. All show rapid warming in the past few decades and that the last decade has been the warmest on record.



Courtesy:Nasa Global CLimate change
http://climate.nasa.gov/scientific-consensus

Friday, July 12, 2013

El Nino activity in 2oth century and global warming

High El Nino -Southern Oscillation (ENSO) activity in the late 20th century is a footprint of global warming says a recent study.
An international team of scientists spearheaded by Jinbao Li and Shang-Ping Xie, while working at the International Pacific Research Center, University of Hawaii at Manoa, has compiled 2,222 tree-ring chronologies of the past seven centuries from both the tropics and mid-latitudes in both hemispheres. Their work is published in the June 30, 2013 online issue of Nature Climate Change.

Li, J., S.-P. Xie, E. R. Cook, M. Morales, D. Christie, N. Johnson, F. Chen, R. D'Arrigo, A. Fowler, X. Gou, and K. Fang (2013): El Niño modulations over the past seven centuries. Nature Climate Change. http://dx.doi.org/10.1038/nclimate1936

Caption: This graph shows El Niño variability derived from tree rings (blue) and instrumental measurements (red). The dashed lines indicate boundary for natural variability. Recent El Niño behavior is largely beyond natural variability.
Credit: International Pacific Research Center

Read More: http://www.eurekalert.org/pub_releases/2013-06/uoha-enu062813.php
and http://dx.doi.org/10.1038/nclimate1936