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Climate change could cause mass exodus by mid century



 
 
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  #71  
Old May 10th 16, 11:54 AM posted to sci.astro.amateur
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Default Climate change could cause mass exodus by mid century

On Sunday, May 8, 2016 at 6:28:24 PM UTC-4, Chris L Peterson wrote:
On Sun, 8 May 2016 14:00:33 -0700 (PDT), Quadibloc
wrote:

On Saturday, May 7, 2016 at 6:11:57 PM UTC-6, Chris L Peterson wrote:

What claim? NG appears to be a perfect theory. It can be derived from
GR as the limiting case for a non-accelerated frame and zero velocity.


But actual moving bodies do not have zero velocity, and acceleration is a real
phenomenon - and Newtonian mechanics purports to describe the behavior of
accelerated bodies.


No, but a limiting case can still be a perfect representation of
reality.


NG doesn't even explain Mercury's orbit.
  #72  
Old May 10th 16, 12:20 PM posted to sci.astro.amateur
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Default Climate change could cause mass exodus by mid century

On Monday, May 9, 2016 at 7:51:13 PM UTC-4, Gary Harnagel wrote:
On Monday, May 9, 2016 at 8:38:34 AM UTC-6, Chris L Peterson wrote:

On Mon, 9 May 2016 06:56:16 -0700 (PDT), Gary Harnagel
wrote:

On Monday, May 9, 2016 at 7:21:13 AM UTC-6, Chris L Peterson wrote:

On Mon, 9 May 2016 05:01:42 -0700 (PDT), Gary Harnagel
wrote:

What he has wrong is that GR is an extension of NG.

Semantics. We could say that GR extended NG. We could say that NG is a
subset of GR. There are lots of ways of connecting the two.

Only in a chronological sense.


I disagree.


Nobody cares what you do with your brain.


He doesn't seem to do anything with it.
  #73  
Old May 10th 16, 12:37 PM posted to sci.astro.amateur
Gary Harnagel
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Posts: 659
Default Climate change could cause mass exodus by mid century

On Monday, May 9, 2016 at 6:26:47 PM UTC-6, Chris L Peterson wrote:

On Mon, 9 May 2016 16:51:11 -0700 (PDT), Gary Harnagel
wrote:

On Monday, May 9, 2016 at 8:38:34 AM UTC-6, Chris L Peterson wrote:

On Mon, 9 May 2016 06:56:16 -0700 (PDT), Gary Harnagel
wrote:

On Monday, May 9, 2016 at 7:21:13 AM UTC-6, Chris L Peterson wrote:

On Mon, 9 May 2016 05:01:42 -0700 (PDT), Gary Harnagel
wrote:

What he has wrong is that GR is an extension of NG.

Semantics. We could say that GR extended NG. We could say that NG is a
subset of GR. There are lots of ways of connecting the two.

Only in a chronological sense.

I disagree.


Nobody cares what you do with your brain.


That sounds like Snell again, more interested in empty insults than
engaged discussion.


YOU should talk! YOU don't discuss ... YOU argue:

"Discussion is always better than argument, because argument is to
find WHO is right and discussion is to find WHAT is right." - Anon.

  #74  
Old May 10th 16, 12:52 PM posted to sci.astro.amateur
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Default Climate change could cause mass exodus by mid century

On Tuesday, May 10, 2016 at 7:37:06 AM UTC-4, Gary Harnagel wrote:
On Monday, May 9, 2016 at 6:26:47 PM UTC-6, Chris L Peterson wrote:

On Mon, 9 May 2016 16:51:11 -0700 (PDT), Gary Harnagel
wrote:

On Monday, May 9, 2016 at 8:38:34 AM UTC-6, Chris L Peterson wrote:

On Mon, 9 May 2016 06:56:16 -0700 (PDT), Gary Harnagel
wrote:

On Monday, May 9, 2016 at 7:21:13 AM UTC-6, Chris L Peterson wrote:

On Mon, 9 May 2016 05:01:42 -0700 (PDT), Gary Harnagel
wrote:

What he has wrong is that GR is an extension of NG.

Semantics. We could say that GR extended NG. We could say that NG is a
subset of GR. There are lots of ways of connecting the two.

Only in a chronological sense.

I disagree.

Nobody cares what you do with your brain.


That sounds like Snell again, more interested in empty insults than
engaged discussion.


YOU should talk! YOU don't discuss ... YOU argue:

"Discussion is always better than argument, because argument is to
find WHO is right and discussion is to find WHAT is right." - Anon.


Notice that peterson's statement,

"That sounds like Snell again, more interested in empty insults than
engaged discussion"

is an empty insult rather than engaged discussion. Ironic, no?

  #75  
Old May 10th 16, 01:27 PM posted to sci.astro.amateur
Gary Harnagel
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Posts: 659
Default Climate change could cause mass exodus by mid century

On Tuesday, May 10, 2016 at 5:52:41 AM UTC-6, wrote:

On Tuesday, May 10, 2016 at 7:37:06 AM UTC-4, Gary Harnagel wrote:

On Monday, May 9, 2016 at 6:26:47 PM UTC-6, Chris L Peterson wrote:

I disagree.

Nobody cares what you do with your brain.

That sounds like Snell again, more interested in empty insults than
engaged discussion.


YOU should talk! YOU don't discuss ... YOU argue:

"Discussion is always better than argument, because argument is to
find WHO is right and discussion is to find WHAT is right." - Anon.


Notice that peterson's statement,

"That sounds like Snell again, more interested in empty insults than
engaged discussion"

is an empty insult rather than engaged discussion. Ironic, no?


Indeed. And his dogmatic assertion about "perfect" gets really hard to
stomach after awhile. There is no such thing as perfection in physics,
nor in real life, for that matter. Perfection only exists in mathematics
and philosophy. On second thought, it doesn't even exist there.

Gary
  #76  
Old May 10th 16, 02:00 PM posted to sci.astro.amateur
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Posts: 9,472
Default Climate change could cause mass exodus by mid century

On Tuesday, May 10, 2016 at 8:27:58 AM UTC-4, Gary Harnagel wrote:
On Tuesday, May 10, 2016 at 5:52:41 AM UTC-6, wrote:

On Tuesday, May 10, 2016 at 7:37:06 AM UTC-4, Gary Harnagel wrote:

On Monday, May 9, 2016 at 6:26:47 PM UTC-6, Chris L Peterson wrote:

I disagree.

Nobody cares what you do with your brain.

That sounds like Snell again, more interested in empty insults than
engaged discussion.

YOU should talk! YOU don't discuss ... YOU argue:

"Discussion is always better than argument, because argument is to
find WHO is right and discussion is to find WHAT is right." - Anon.


Notice that peterson's statement,

"That sounds like Snell again, more interested in empty insults than
engaged discussion"

is an empty insult rather than engaged discussion. Ironic, no?


Indeed. And his dogmatic assertion about "perfect" gets really hard to
stomach after awhile. There is no such thing as perfection in physics,
nor in real life, for that matter. Perfection only exists in mathematics
and philosophy. On second thought, it doesn't even exist there.


Did you know that peterson was harmed by a 60mm refractor when he was young?



  #77  
Old May 10th 16, 02:53 PM posted to sci.astro.amateur
Chris L Peterson
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Posts: 10,007
Default Climate change could cause mass exodus by mid century

On Tue, 10 May 2016 05:27:56 -0700 (PDT), Gary Harnagel
wrote:

On Tuesday, May 10, 2016 at 5:52:41 AM UTC-6, wrote:

On Tuesday, May 10, 2016 at 7:37:06 AM UTC-4, Gary Harnagel wrote:

On Monday, May 9, 2016 at 6:26:47 PM UTC-6, Chris L Peterson wrote:

I disagree.

Nobody cares what you do with your brain.

That sounds like Snell again, more interested in empty insults than
engaged discussion.

YOU should talk! YOU don't discuss ... YOU argue:

"Discussion is always better than argument, because argument is to
find WHO is right and discussion is to find WHAT is right." - Anon.


Notice that peterson's statement,

"That sounds like Snell again, more interested in empty insults than
engaged discussion"

is an empty insult rather than engaged discussion. Ironic, no?


Indeed. And his dogmatic assertion about "perfect" gets really hard to
stomach after awhile. There is no such thing as perfection in physics,
nor in real life, for that matter. Perfection only exists in mathematics
and philosophy. On second thought, it doesn't even exist there.


Okay, sock puppet it is.
  #79  
Old May 10th 16, 02:57 PM posted to sci.astro.amateur
Sam Wormley[_2_]
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Posts: 3,966
Default Climate change could cause mass exodus by mid century

On 5/5/16 3:17 AM, SlurpieMcDoublegulp wrote:
Scorching temperatures brought on by climate change could leave large swaths of the Middle East and North Africa uninhabitable by the middle of this century, a new study predicts.


Extreme Heat For Middle East And North Africa
http://www.reportingclimatescience.c.../extreme-heat/



Part of the Middle East and North Africa may become uninhabitable due
to climate change driven extreme heat, say researchers, prompting
fears of a climate-exodus from the region.


Abstracts

Strongly increasing heat extremes in the Middle East and North Africa
(MENA) in the 21st century

The ensemble results of CMIP5 climate models that applied the RCP4.5
and RCP8.5 scenarios have been used to investigate climate change and
temperature extremes in the Middle East and North Africa (MENA).
Uncertainty evaluation of climate projections indicates good model
agreement for temperature but much less for precipitation. Results
imply that climate warming in the MENA is strongest in summer while
elsewhere it is typically stronger in winter. The summertime warming
extends the thermal low at the surface from South Asia across the
Middle East over North Africa, as the hot desert climate intensifies
and becomes more extreme. Observations and model calculations of the
recent past consistently show increasing heat extremes, which are
projected to accelerate in future. The number of warm days and nights
may increase sharply. On average in the MENA, the maximum temperature
during the hottest days in the recent past was about 43 °C, which
could increase to about 46 °C by the middle of the century and reach
almost 50 °C by the end of the century, the latter according to the
RCP8.5 (business-as-usual) scenario. This will have important
consequences for human health and society.

Aerosol optical depth trend over the Middle East

We use the combined Dark Target/Deep Blue aerosol optical depth (AOD)
satellite product of the moderate-resolution imaging
spectroradiometer (MODIS) collection 6 to study trends over the
Middle East between 2000 and 2015. Our analysis corroborates a
previously identified positive AOD trend over large parts of the
Middle East during the period 2001 to 2012.

We relate the annual AOD to precipitation, soil moisture and surface
winds to identify regions where these attributes are directly related
to the AOD over Saudi Arabia, Iraq and Iran. Regarding precipitation
and soil moisture, a relatively small area in and surrounding Iraq
turns out to be of prime importance for the AOD over these countries.
Regarding surface wind speed, the African Red Sea coastal area is
relevant for the Saudi Arabian AOD.

Using multiple linear regression we show that AOD trends and
interannual variability can be attributed to soil moisture,
precipitation and surface winds, being the main factors controlling
the dust cycle. Our results confirm the dust driven AOD trends and
variability, supported by a decreasing MODIS-derived Ångström
exponent and a decreasing AERONET-derived fine mode fraction that
accompany the AOD increase over Saudi Arabia. The positive AOD trend
relates to a negative soil moisture trend. As a lower soil moisture
translates into enhanced dust emissions, it is not needed to assume
growing anthropogenic aerosol and aerosol precursor emissions to
explain the observations. Instead, our results suggest that
increasing temperature and decreasing relative humidity in the last
decade have promoted soil drying, leading to increased dust emissions
and AOD; consequently an AOD increase is expected due to climate
change.

Citations

Jos Lelieveld, Yiannis Proestos, Panos Hadjinicolaou, Meryem
Tanarhte, Evangelos Tyrlis and Georgios Zittis; Strongly increasing
heat extremes in the Middle East and North Africa (MENA) in the 21st
century; Climatic Change, 23. April 2016,
doi:10.1007/s10584-016-1665-6


Klaus Klingmüller, Andrea Pozzer, Swen Metzger, Georgiy L. Stenchikov
and Jos Lelieveld; Aerosol optical depth trend over the Middle East;
Atmospheric Chemistry and Physics, 22. April 2016;
doi:10.5194/acp-16-5063-2016



--

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

  #80  
Old May 10th 16, 03:06 PM posted to sci.astro.amateur
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Posts: 9,472
Default Climate change could cause mass exodus by mid century

On Tuesday, May 10, 2016 at 9:54:29 AM UTC-4, Chris L Peterson wrote:
On Tue, 10 May 2016 03:54:51 -0700 (PDT), wsnell01 wrote:

On Sunday, May 8, 2016 at 6:28:24 PM UTC-4, Chris L Peterson wrote:
On Sun, 8 May 2016 14:00:33 -0700 (PDT), Quadibloc
wrote:

On Saturday, May 7, 2016 at 6:11:57 PM UTC-6, Chris L Peterson wrote:

What claim? NG appears to be a perfect theory. It can be derived from
GR as the limiting case for a non-accelerated frame and zero velocity.

But actual moving bodies do not have zero velocity, and acceleration is a real
phenomenon - and Newtonian mechanics purports to describe the behavior of
accelerated bodies.

No, but a limiting case can still be a perfect representation of
reality.


NG doesn't even explain Mercury's orbit.


Who said it did?


If NG can't explain Mercury's orbit, then it can hardly be a perfect theory.

 




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