On Aug 4, 5:21 pm, "oonbz" wrote:
"chemist" wrote in message

...
On Aug 4, 4:00 am, "oonbz" wrote:





Sahara Desert Greening Due to Climate Change

July 31 2009

Desertification, drought, and despair-that's what global warming has in
store for much of Africa. Or so we hear.

Emerging evidence is painting a very different scenario, one in which
rising
temperatures could benefit millions of Africans in the driest parts of the
continent.

Scientists are now seeing signals that the Sahara desert and surrounding
regions are greening due to increasing rainfall.

If sustained, these rains could revitalize drought-ravaged regions,
reclaiming them for farming communities.

This desert-shrinking trend is supported by climate models, which predict
a
return to conditions that turned the Sahara into a lush savanna some
12,000
years ago.

Green Shoots

The green shoots of recovery are showing up on satellite images of regions
including the Sahel, a semi-desert zone bordering the Sahara to the south
that stretches some 2,400 miles (3,860 kilometers).

Images taken between 1982 and 2002 revealed extensive regreening
throughout
the Sahel, according to a new study in the journal Biogeosciences.

The study suggests huge increases in vegetation in areas including central
Chad and western Sudan.

The transition may be occurring because hotter air has more capacity to
hold
moisture, which in turn creates more rain, said Martin Claussen of the Max
Planck Institute for Meteorology in Hamburg, Germany, who was not involved
in the new study.

"The water-holding capacity of the air is the main driving force,"
Claussen
said

http://news.nationalgeographic.com/n...en-sahara.html

Warmest Regards

Bonzo

This may already be out of date the climate is cooling.
=====================================

Yes, it probably is.


Probably???

You can't make up your mind about reality at all can you? The only
consistent claim you make is that the IPCC is wrong. Why it's wrong is
a matter of complete indifference to you because for the filth
merchant lobby, defeating mitigation rather than getting scientific
clarity is all that matters

Fran

On Aug 4, 4:11*am, Fran wrote:
On Aug 4, 5:21 pm, "oonbz" wrote:





"chemist" wrote in message

....
On Aug 4, 4:00 am, "oonbz" wrote:

Sahara Desert Greening Due to Climate Change

July 31 2009

Desertification, drought, and despair-that's what global warming has in
store for much of Africa. Or so we hear.

Emerging evidence is painting a very different scenario, one in which
rising
temperatures could benefit millions of Africans in the driest parts of the
continent.

Scientists are now seeing signals that the Sahara desert and surrounding
regions are greening due to increasing rainfall.

If sustained, these rains could revitalize drought-ravaged regions,
reclaiming them for farming communities.

This desert-shrinking trend is supported by climate models, which predict
a
return to conditions that turned the Sahara into a lush savanna some
12,000
years ago.

Green Shoots

The green shoots of recovery are showing up on satellite images of regions
including the Sahel, a semi-desert zone bordering the Sahara to the south
that stretches some 2,400 miles (3,860 kilometers).

Images taken between 1982 and 2002 revealed extensive regreening
throughout
the Sahel, according to a new study in the journal Biogeosciences.

The study suggests huge increases in vegetation in areas including central
Chad and western Sudan.

The transition may be occurring because hotter air has more capacity to
hold
moisture, which in turn creates more rain, said Martin Claussen of the Max
Planck Institute for Meteorology in Hamburg, Germany, who was not involved
in the new study.

"The water-holding capacity of the air is the main driving force,"
Claussen
said

http://news.nationalgeographic.com/n...en-sahara.html

Warmest Regards

Bonzo

This may already be out of date the climate is cooling.
=====================================

Yes, it probably is.

Probably???

You can't make up your mind about reality at all can you? The only
consistent claim you make is that the IPCC is wrong. Why it's wrong is
a matter of complete indifference to you because for the filth
merchant lobby, defeating mitigation rather than getting scientific
clarity is all that matters

Fran- Hide quoted text -

- Show quoted text -

Sorry Fran, but the Sahara desert once had plentiful rainfall
and lush vegetation. It dried up after the last Ice Age long
before the Industrial and Petroleum Ages.

Sahara Desert Was Once Lush and PopulatedBy Bjorn Carey, LiveScience
Staff Writer

posted: 20 July 2006 02:07 pm ET
..View of the Great Sand Sea of Egypt from the Gilf Kebir Plateau. This
was a good place to live 8000 years ago. Credit: © ScienceFull Size
1 of 3.View of the Great Sand Sea of Egypt from the Gilf Kebir
Plateau. This was a good place to live 8000 years ago. Credit: ©
ScienceRock art from the "swimmers cave" in remote Southwest Egypt.
Credit: © ScienceA timeline map of rainfall and human occupancy in
the Sahara Desert. Credit: © Science
At the end of the last Ice Age, the Sahara Desert was just as dry and
uninviting as it is today. But sandwiched between two periods of
extreme dryness were a few millennia of plentiful rainfall and lush
vegetation.

During these few thousand years, prehistoric humans left the congested
Nile Valley and established settlements around rain pools, green
valleys, and rivers.

The ancient climate shift and its effects are detailed in the July 21
issue of the journal Science.

When the rains came

Some 12,000 years ago, the only place to live along the eastern Sahara
Desert was the Nile Valley. Being so crowded, prime real estate in the
Nile Valley was difficult to come by. Disputes over land were often
settled with the fist, as evidenced by the cemetery of Jebel Sahaba
where many of the buried individuals had died a violent death.

But around 10,500 years ago, a sudden burst of monsoon rains over the
vast desert transformed the region into habitable land.

This opened the door for humans to move into the area, as evidenced by
the researcher's 500 new radiocarbon dates of human and animal remains
from more than 150 excavation sites.

"The climate change at [10,500 years ago] which turned most of the
[3.8 million square mile] large Sahara into a savannah-type
environment happened within a few hundred years only, certainly within
less than 500 years," said study team member Stefan Kroepelin of the
University of Cologne in Germany.

Frolicking in pools

In the Egyptian Sahara, semi-arid conditions allowed for grasses and
shrubs to grow, with some trees sprouting in valleys and near
groundwater sources. The vegetation and small, episodic rain pools
enticed animals well adapted to dry conditions, such as giraffes, to
enter the area as well.

Humans also frolicked in the rain pools, as depicted in rock art from
Southwest Egypt.

In the more southern Sudanese Sahara, lush vegetation, hearty trees,
and permanent freshwater lakes persisted over millennia. There were
even large rivers, such as the Wadi Howar, once the largest tributary
to the Nile from the Sahara.

"Wildlife included very demanding species such as elephants, rhinos,
hippos, crocodiles, and more than 30 species of fish up to 2 meters (6
feet) big," Kroepelin told LiveScience.

A timeline of Sahara occupation [See Map]:

•22,000 to 10,500 years ago: The Sahara was devoid of any human
occupation outside the Nile Valley and extended 250 miles further
south than it does today.
•10,500 to 9,000 years ago: Monsoon rains begin sweeping into the
Sahara, transforming the region into a habitable area swiftly settled
by Nile Valley dwellers.
•9,000 to 7,300 years ago: Continued rains, vegetation growth, and
animal migrations lead to well established human settlements,
including the introduction of domesticated livestock such as sheep and
goats.
•7,300 to 5,500 years ago: Retreating monsoonal rains initiate
desiccation in the Egyptian Sahara, prompting humans to move to
remaining habitable niches in Sudanese Sahara. The end of the rains
and return of desert conditions throughout the Sahara after 5,500
coincides with population return to the Nile Valley and the beginning
of pharaonic society.

On Aug 5, 8:46*am, jose el fontanero wrote:
On Aug 4, 4:11*am, Fran wrote:





On Aug 4, 5:21 pm, "oonbz" wrote:

"chemist" wrote in message

....
On Aug 4, 4:00 am, "oonbz" wrote:

Sahara Desert Greening Due to Climate Change

July 31 2009

Desertification, drought, and despair-that's what global warming has in
store for much of Africa. Or so we hear.

Emerging evidence is painting a very different scenario, one in which
rising
temperatures could benefit millions of Africans in the driest parts of the
continent.

Scientists are now seeing signals that the Sahara desert and surrounding
regions are greening due to increasing rainfall.

If sustained, these rains could revitalize drought-ravaged regions,
reclaiming them for farming communities.

This desert-shrinking trend is supported by climate models, which predict
a
return to conditions that turned the Sahara into a lush savanna some
12,000
years ago.

Green Shoots

The green shoots of recovery are showing up on satellite images of regions
including the Sahel, a semi-desert zone bordering the Sahara to the south
that stretches some 2,400 miles (3,860 kilometers).

Images taken between 1982 and 2002 revealed extensive regreening
throughout
the Sahel, according to a new study in the journal Biogeosciences.

The study suggests huge increases in vegetation in areas including central
Chad and western Sudan.

The transition may be occurring because hotter air has more capacity to
hold
moisture, which in turn creates more rain, said Martin Claussen of the Max
Planck Institute for Meteorology in Hamburg, Germany, who was not involved
in the new study.

"The water-holding capacity of the air is the main driving force,"
Claussen
said

http://news.nationalgeographic.com/n...en-sahara.html

Warmest Regards

Bonzo

This may already be out of date the climate is cooling.
=====================================

Yes, it probably is.

Probably???

You can't make up your mind about reality at all can you? The only
consistent claim you make is that the IPCC is wrong. Why it's wrong is
a matter of complete indifference to you because for the filth
merchant lobby, defeating mitigation rather than getting scientific
clarity is all that matters

Fran- Hide quoted text -

- Show quoted text -

Sorry Fran, but the Sahara desert once had plentiful rainfall
and lush vegetation. It dried up after the last Ice Age long
before the Industrial and Petroleum Ages.


snip interesting but irrelevant early holocene history of African
climate

This doesn't affect my argument at all. To the best of my knowledge
it's not anyone's assertion that the Sahara became desertified as a
result of anthopogenic factors. My point was that Bonzo simultaneously
claims that the world is cooling and warming, depending on which claim
better suits the immediate interests of the filth merchants he
embraces.

Fran

On Aug 4, 6:30*pm, Fran wrote:
On Aug 5, 8:46*am, jose el fontanero wrote:





On Aug 4, 4:11*am, Fran wrote:

On Aug 4, 5:21 pm, "oonbz" wrote:

"chemist" wrote in message

...
On Aug 4, 4:00 am, "oonbz" wrote:

Sahara Desert Greening Due to Climate Change

July 31 2009

Desertification, drought, and despair-that's what global warming has in
store for much of Africa. Or so we hear.

Emerging evidence is painting a very different scenario, one in which
rising
temperatures could benefit millions of Africans in the driest parts of the
continent.

Scientists are now seeing signals that the Sahara desert and surrounding
regions are greening due to increasing rainfall.

If sustained, these rains could revitalize drought-ravaged regions,
reclaiming them for farming communities.

This desert-shrinking trend is supported by climate models, which predict
a
return to conditions that turned the Sahara into a lush savanna some
12,000
years ago.

Green Shoots

The green shoots of recovery are showing up on satellite images of regions
including the Sahel, a semi-desert zone bordering the Sahara to the south
that stretches some 2,400 miles (3,860 kilometers).

Images taken between 1982 and 2002 revealed extensive regreening
throughout
the Sahel, according to a new study in the journal Biogeosciences..

The study suggests huge increases in vegetation in areas including central
Chad and western Sudan.

The transition may be occurring because hotter air has more capacity to
hold
moisture, which in turn creates more rain, said Martin Claussen of the Max
Planck Institute for Meteorology in Hamburg, Germany, who was not involved
in the new study.

"The water-holding capacity of the air is the main driving force,"
Claussen
said

http://news.nationalgeographic.com/n...en-sahara.html

Warmest Regards

Bonzo

This may already be out of date the climate is cooling.
=====================================

Yes, it probably is.

Probably???

You can't make up your mind about reality at all can you? The only
consistent claim you make is that the IPCC is wrong. Why it's wrong is
a matter of complete indifference to you because for the filth
merchant lobby, defeating mitigation rather than getting scientific
clarity is all that matters

Fran- Hide quoted text -

- Show quoted text -

Sorry Fran, but the Sahara desert once had plentiful rainfall
and lush vegetation. It dried up after the last Ice Age long
before the Industrial and Petroleum Ages.

snip interesting but irrelevant early holocene history of African
climate

This doesn't affect my argument at all. To the best of my knowledge
it's not anyone's assertion that the Sahara became desertified as a
result of anthopogenic factors. My point was that Bonzo simultaneously
claims that the world is cooling and warming, depending on which claim
better suits the immediate interests of the filth merchants he
embraces.

Fran- Hide quoted text -

- Show quoted text -

My point is that our Planet has undergone numerous and
extreme changes over billions of years and the unmitigated
hubris of those who claim that our Planet's climate is in
anyway effected by anthropogenic activity is self serving
and absurd.

"jose el fontanero" wrote in message
...

Please do not reply to trolls like bonzo.They ruin forums with their
agendas.