Originally posted by PuterMan
reply to post by Aromaz
and THAT is definitely going to change the world climate
In what way will this affect the world climate? Are we talking colder, warmer, windier etc - you get my drift. How will this affect other areas -
Just asking as maybe some are not aware of the potential effects of cooling the Sahara.
It looks like NABRO went quiet since about 11h00 UTC on 16 June. There were two small quakes, one at depth of about 8 km and another 1.83 km; these
probably closed the magma pipe; ash stopped soon after that.
Answer to your question is a long one; I will try to keep it short, but . . . Heck, I re-write this answer three times already! It would take a few
hours of lecture! This is a very simplified basic condensed descriptions - just to get the general idea.
The Sahara is often seen as the Driving Force of atmospheric movement around the world. It is the pulsating HEART of the world. During the day the
desert gets hot very quickly, reach to 50 deg C; at night temperature drops rapidly often below 0 deg C. This causes the pulse - temperature
fluctuation on average 35 to 50 deg C. When I refer here to Sahara I actually mean the Greater Sahara that also includes all of Northern Africa. In
effect the Sahara radiate/ejects hot air in day time (Expansion) and sucks air interior (Contraction) during the night time. Hot expands, cold
The general atmospheric movement is East to West; thus over a period of about four to ten days the wind from the Sahara reaches the shores of the
Americas; over the Atlantic. During the months of June to September this hot air from the Sahara causes the onset of the North America Monsoon. AND
the formation of hurricanes over the Atlantic Ocean. This wind/atmosphere action is a result of the Intertropical Convergence Zone'
As for Europe; during the period June to September the increased flow of air from N-Africa Westwards sucks 'feeding' air in from Europe in the North
and Africa on the South. This causes air flow from polar regions towards the Equator - this cool moist air gives rainfall in Africa and Europe.
If NABRO was going to spew more ash into the high atmosphere;
and as per recent few days that ash cloud remain mostly over Northern Africa
it will cause cooling down in day and even night temperatures over the Sahara desert.
In effect it will be like the HEART of the world gets ineffective, lazy, fluttering.
The Atlantic hurricane season will be low, meaning low rainfalls in Southern USA and Northern parts of S-America. Temperature will drop over Europe,
not much of fronts for rain - even more dry conditions.
To some extend we do have this happening at the moment and if we do consider the Grimsvotn volcano, Eyjafjallakull and St Helens all placing large
amounts of ash in the higher atmosphere during this past year - that already did have cooling effect around Equatorial regions - including the Sahara.
Now we add Chile to the Southern Hemisphere . . . the picture is looking somewhat grim for coming years.
YES, I am aware there are all the time volcano's erupting all over the world but; this past 18 months we had VERY explosive kind of eruptions, large
amounts of Ash and Sulphur blowing high (above 8,000 meters) into the air. Ash will reduce solar radiation, cool down and Sulphur also reflects solar
rays but worse it is acidic.