Andreas I. Jonsson's Science Blog

Mar 11

Administrative Notice

URL change: andreasjonsson > andreasijonsson

Mar 08

Administrative Notice

This is now strictly a science blog. I have moved all bird-related content over to Please check it out.

Nov 03

Madden-Julian Conversation -


I just stumbled on this new blog over at called the “Madden-Julian Conversation”. They have a series of very nice tutorial posts speaking about atmospheric modes of variability, including large-scale patterns such as the El Niño-Southern Oscillation (ENSO), the Indian Monsson and the Madden-Julian Oscillation (MJO). It is an excellent introduction to understanding the regularity and chaos of our changing climate

What is the MJO? Part 1

What is the MJO? Part 2

What is the MJO? Part 3 - on modes of variability, and space and time scales

What is the MJO? Part 4 - more background on modes of variability

What is the MJO? Part 5 - interannual and intraseasonal, prediction, beating chaos

Sep 24


Sep 19


Canada Cuts Ozone Sonde Network -

This is really troubling. Canada, with its huge landmass in the Arctic, has a tremendous responsibility to the global community to continue its long-term monitoring of this fragile region. I don’t think Environment Canada are to blame specifically; they are just trying to cope with significant budgets cuts under the current government.

Feb 06

Arctic sea ice loss -

A Polar bear has been recorded swimming 426 miles for nine straight days in search for ice.

Jan 08

Reduced emissions of ozone depleting substances will mitigate global warming -

An interesting new study was presented at the American Geophysical Union meeting in San Fransisco in December 2010: It was shown that controlling emissions of chlorofluorocarbons (CFCs) within the Montreal Protocol and its amendments to prevent thinning of the stratospheric ozone layer, will have significant beneficial side-effects on climate change. It is projected that global warming could be reduced by as much as 1.5 degrees by 2070, compared to a scenario in which CFCs would have been allowed to increase unabated.    

Jan 07


Dec 20