Sentences with phrase «polar surface»

This in turn has been linked to solar UV / ozone chemistry translated through atmospheric pathways to polar surface pressure.

Subsequently, on December 15, 2008, scientists announced at the Fall 2008 Meeting of the American Geophysical Union» that the latest high - resolution images of Saturn's moon Enceladus suggest that its south polar surface changes over time.

In a world rapidly warming as humans burn ever more fossil fuels, to add ever more greenhouse gases into the atmosphere, researchers expect to observe an increase in the volume of meltwater on the south polar surface.

The fate of this material and its effects on biogeochemical cycles will depend on its routing and residence time in polar surface waters4.

This new study has demonstrated that cold polar surface waters will start to become corrosive to these calcifying organisms once the atmospheric CO2 level reaches about 600 parts per million, which is 60 % more than the current level but which could be attained by the middle of this century.

The repositioning of the storm tracks generally improves the simulations in the Northern Hemisphere, as it reduces a positive polar surface pressure bias which is present in the models at standard resolution.

There are other factors influencing polar surface pressure.

But these snow - covered caps are increasingly interrupted by pits like these, whose black mud bottoms of rocky sediment called cryoconite drastically reduces polar surface reflectivity.

Model simulations indicate that polar surface waters will become undersaturated for aragonite in the near future for the Arctic (atmospheric carbon dioxide of 400 - 450 ppm) and by mid-century for the southern ocean off the Antarctic (atmospheric carbon dioxide of 550 - 600 ppm).

The puzzle of a shared 20 to 30 year pulse in both hemispheres is traced mechanistically back to changing polar surface pressure fields — influencing storm tracks in high latitudes.

At the polar surface level, the mass of air is driven toward the 60th parallel, replacing the air that rose there, and the polar circulation cell is complete.

That warming extends the 50 m or so to the seabed because we are dealing with only a polar surface water layer here (over the shelves the Arctic Ocean structure is one - layer rather than three layers) and the surface warming is mixed down by wave - induced mixing because the extensive open water permits large fetches.