CFC Destruction of
Ozone - Major Cause of Recent Global Warming!
Robert A. Ashworth

The animation illustrates how one chlorine atom in the
stratosphere
can destroy up to 100,000 ozone molecules.
Graphic credit goes to
University of Alaska
Abstract
There has been a lot of discussion about global
warming. Some say anthropogenic carbon
dioxide (CO2) emissions caused the earth to warm. Others say there is no abnormality at all,
that it is just natural warming. As you
will see from the data presented and analyzed, a greater than normal warming
did occur in recent times but no measurements confirm an increase in CO2,
whether anthropogenic or natural, had any effect on global temperatures. There is however, strong evidence that
anthropogenic emissions of chlorofluorocarbons (CFCs) were the major cause of
the recent abnormal warming.
CFCs have created both unnatural
atmospheric cooling and warming based on these facts:
Greenhouse
Gases
Many
scientists do not agree with the CO2 global warming models developed
by the Intergovernmental Panel on Climate Change (IPCC). For instance, T.M.L. Wigley
1, a senior scientist at the U.S. National Center for
Atmospheric Research, calculated the "saved" warming that would
accrue if every nation met its Kyoto
Protocol obligations (U.S. reduction of 43%).
By 2050, the earth’s temperature would reduce by 0.07 oC - a change so small it could not be reliably
measured. In contrast to Wigley's projections, the IPCC has developed models 2
that predict the average surface temperature of the earth relative to
1980-1990, will increase by 2 to 11.5°F (1.1 to 6.4°C) by the end of the 21st
century due to increased CO2 concentrations in the atmosphere. They project temperature change as functions
of growth rates in atmospheric carbon dioxide.
Those projections are shown in Figure 1.

Figure
1.
IPCC projections of global warming.
What is so
disturbing is that measured temperature points added to the IPCC graph do not
show the temperature has increased.
Further, temperatures for over 1200 years (see Figure 2) show absolutely
no correlation with CO2 concentration in the atmosphere. Note that the 210 to 312 ppmv scale is in
larger increments than the upper 312 to 378 ppmv scale, visually making the CO2
increase look greater than it actually was.
The temperature is jumping around and not following CO2
concentrations at all. The IPCC models
are clearly flawed. One must wonder
whether the IPCC used any actual temperature measurements or historic CO2
concentrations relative to global temperature, when it developed its
models. After developing the models, it
does not look like they checked their predictions against real measurements. If so, CO2 causing global warming
would have been negated by now.

Figure 2.
CO2 concentration and temperature change with time from 800
to 2006 AD 3.
As
shown in Figure 2, over the time from 850 until 1650, the CO2 concentration
was relatively the same (~230 ppmv) but the earth's temperature varied from
+0.6 to -0.2 o C. The CO2
concentration was 375 ppmv in 2006 and there was still no correlation of
temperature with CO2 concentration
Some
say historically, that increased CO2 levels in the atmosphere have
created periods of global warming. They
cite the Vostok,
Antarctica ice core data 4, as proof of this. The truth here is that whoever came up with
this analysis got the cause and effect reversed. The data show that global warming always
comes first (refer back to Figure 2). After a temperature spike from by
the sun, the oceans start to warm and liberate more CO2 because of
the reduced solubility of CO2 in seawater at higher temperatures.
After a spike, there is a lag of some 800+ years until CO2
concentration in the atmosphere starts to increase.
Data
that is more recent, further confirm that atmospheric CO2
concentrations have no effect on global temperature, see Figure 3. While CO2 levels increased
some 20 ppmv over the past 10 years,
global temperatures did not increase they fell. For instance,
the earth's temperature from January 2007 to January 2008 dropped by almost 0.6
oC.

Figure 3.
Earth temperature and CO2 concentration
1998-2008.
The temperatures shown in the graph
5 are from the National Aeronautics and Space Administration's (NASA)
Microwave Sounding Unit (MSU) and the United Kingdom's (UK) Hadley Climate
Research Unit. The Mauna Loa Observatory
in Hawaii measured concentrations of CO2 in the atmosphere over this
same period. Here again, actual data
completely refutes IPCC modeling
predictions. Even further, human
emissions account for only some three percent (3%) of the total CO2
in atmosphere 6 or some 12 ppmv of the 385 ppmv seen in 2008. Therefore, if anthropogenic emissions of CO2
had been banished completely at the start of 2008 the CO2 in the
atmosphere would have dropped only back to the level we had in mid 2002. It was also warmer in 2002 than it was in
2007. Although one would prefer not to
refute another's work, the more you study CO2 causing global
warming, the more ludicrous it becomes.
Besides
the carbon dioxide increase in the atmosphere, atmospheric concentrations of
methane have increased 2.5 times from pre-industrial time (approximately 700 ppbv) to 1,745 ppbv in 1998
7. In 1966, the methane
concentration was around 1400 ppbv. In 2000, methane concentrations leveled off
at 1755 ppbv and currently appear to be slowly
dropping. This is during the same time
span when stratospheric CFC concentrations leveled off and started to drop
slowly. Where is this methane coming
from? Much of it could be from the
melting of permafrost. A recent study
8 showed that permafrost melting in North Siberia is releasing methane sequestered
there since the Pleistocene era (10,000 to one million years ago) from the
surface of thawing lakes. Further,
methane is being emitted at a rate much greater than previously thought. The methane being released was estimated to
be some 100 times the rate of carbon dioxide released from the burning of
fossil fuels. Methane (CH4) slowly converts to CO2 in the
atmosphere. If the researchers from
Florida, Alaska and Russia are correct, it appears that most of the recent CO2
increase has come from the melting of permafrost.
Ozone Loss Effect
In
1994, ozone in the lower stratosphere in Antarctica had dropped to less than
one-third of its normal level. Although
not as severe, ozone concentration north of the Arctic Circle sank to 45% of
normal in the winter of 1996.
The legendary hypotheses 9 of Paul Crutzen, Sherwood Rowland, and Mario Molina led to CFCs being banned because they were destroying stratospheric
ozone. Although it unleashed
a storm of criticism and controversy at the time they did their work, they were
vindicated by receipt of the 1995 Nobel Prize in Chemistry. In
1978, the USA banned the use of CFCs in hair sprays and other aerosols. In 1987, the governments of the world through
the United Nations Environment Programme (UNEP),
agreed to limit the production and release of a variety of CFCs. The protocol to accomplish this was put
forward at a meeting in Montreal, Canada and has since become known as the
Montreal Protocol. Since the original
protocol, its provisions were amended in mid-1998; the amendments were then
ratified or accepted by 120 and 78 countries, respectively. CFCs will be produced in China and other
developing countries until 2010.
However, in July 2007, China shut down five of its six remaining CFC
production plants ahead of schedule and now is only producing 550 metric tons
per year.
It is well known that warming of the stratosphere is caused by
ozone absorbing ultraviolet radiation.
Since ozone keeps the stratosphere warm, using straightforward logic,
loss of ozone would cause the stratosphere to cool. When ozone is lost, more UV light passes
through the stratosphere to hit earth. The effect is clearly shown (Figure
4) by temperature versus ozone concentration in Dobson Units (DU). NASA 10 generated the graph
below.

Figure 4.
Ozone concentration versus stratospheric temperature.
Except
for the periods of two large volcanic eruptions, temperature and ozone
concentration rise and fall together.
From 1997 to 2001, the temperature of the stratosphere averaged a 1 oC change for every 6.45 DU of increase or
decrease in stratospheric ozone concentration.
Over the Polar Regions, the primal cause for colder than normal
temperatures is loss of ozone. During
winter, the air temperature drops and clouds of ice crystals, with mixtures of
hydrochloric, sulfuric and nitric acids, form in the stratosphere. These ice crystals provide a surface
for chemical reactions that change chlorine compounds that do not react with
ozone (e.g. hydrogen chloride) into more active forms that destroy ozone, such
as:
HCl
+ ClONO2 -> Cl2 + HNO3 and CL2 + UV
-> 2 Cl -
In
addition, the very cold air creates vortices of fast-moving air. These vortices effectively insulate the Polar
Regions from the rest of the atmosphere.
They sit there, are very stable, and keep the outside higher-ozone air
from coming in. Most stratospheric ozone
is created in the tropics because of the greater intensity of solar radiation
that creates ozone. Stratospheric air
currents, from the tropics, then transport ozone to the Arctic and Antarctica. However, the strong and stable vortices hinder
the migration of ozone to the poles and more UV light passes through to hit
earth. That is why the Polar Regions
have warmed more that the rest of the earth.
Since
the late sixties, the loss of ozone has caused the stratosphere to cool, see
Figure 5. The exceptions to cooling
caused by ozone destruction occurred at the times of the major eruptions of El Chichon, and Mt. Pinatubo volcanoes. The Agung volcanic
eruption that occurred before the time interval analyzed also warmed the
stratosphere. In 1980, Mt. St. Helens
erupted but it had a much smaller effect than El Chichon
and Mt. Pinatubo. In 1998, the
stratosphere was 1.37 oC cooler than it
was in 1966. This span of time was
chosen to negate the solar irradiance cycle and the volcanic eruption effects. The data suggests that the cooling over this
time span appears to be mostly due to loss of ozone.

Figure 5.
Global lower stratospheric anomalies from 1958 to 2008
11.
The
temperature changes before 1966 are most likely the result of change in the
rate of solar energy that hits earth and maybe some volcanic activity. However, after CFC refrigerants and aerosols
started to be produced and released to the atmosphere, the stratosphere started
to cool. As the lower stratosphere and
upper troposphere cooled, the troposphere and earth from 1966 to 1998 warmed by
0.48 oC see Figure 6. The mean used for this graph to set a zero
temperature is different from Figure 5 but since only temperature change is
being considered, the line depicting the zero point is irrelevant.

Figure 6. Near earth
surface temperature global change with time 12.
In
the Arctic, surface temperatures increased 2 ˝ times the average global
increase (1.2 oC vs. 0.48 oC) from 1966 to 1998, see Figure 7. This appears to be caused by less ozone in
the stratosphere in polar climes where ozone destruction is exacerbated.

Figure 7. Observed Arctic
temperature change 13.
There
is a cooling anomaly in Antarctica.
Whereas, the Signey Island landmass in the
northern part of Antarctica has warmed, south at Vostok,
there has been a cooling effect.
Although the cooling at Vostok needs to be
analyzed in more detail, because of the large ozone hole in Antarctica, it
seems likely that black body radiation from Vostok
(some 11,400 feet above sea level) to outer space is most likely the cause,
especially since this phenomenon occurred over the same time span that
stratospheric ozone destruction took place.
One would have to use reverse logic to explain the cooling effect at Vostok being caused by increased CO2 in the
atmosphere.
The
change in ozone depletion chemicals in the stratosphere versus time 14
plus future concentration projections is shown in Figure 8. CFC concentrations peaked in the late nineties
and then started dropping slightly. The
contribution of methyl bromide is split into anthropogenic (A) and natural (N)
components and the natural ozone-depleting substance methyl chloride is included. The line
at 2 ppb corresponds to the time when ozone depletion was first detected
(1980). It also shows when major ozone
recovery is anticipated (2050 to 2060).
Although not shown, chloroform (CHCl3), dichloromethane (CH2Cl2), and a range of other chlorinated
solvents contribute a further 0.1 ppb to the stratospheric chlorine.

Figure 8.
Ozone depletion chemicals in the stratosphere.
CFC's
and CCl4 are nearly inert in the troposphere and have lifetimes of
50-200+ years. The hydrogen-containing
halocarbons like HCl are more reactive, and tend to
be removed in the troposphere by reactions with [OH] radicals. However, this process is slow and some live
long enough to reach the stratosphere.
Total stratospheric organic chlorine is currently over 3 ppbv. Methyl
Chloride (CH3Cl) is the only ozone-depleting chlorocarbon
from a major natural source and makes up around 0.5 ppbv
of the total. Organic bromides and
iodides also destroy ozone.
It
is different in the stratosphere; the major source of CFC decomposition there
is photolysis 15, reaction with ultraviolet (UV) light
radiation. Ultraviolet light has
wavelengths in the 200-400 nm region. UV-A light is a low energy UV light with
wavelengths between 320-400 nm. Only
about 5% of the UV-A light is absorbed by ozone and most reaches the surface of
the Earth. UV-B light is of moderate
energy and has wavelengths between 290-320 nm.
Ozone absorbs most of the UV-B light before it reaches the surface of
the Earth. UV-C light is a high energy
UV light with wavelengths in the range of 200-290 nm.
Both
ozone and oxygen molecules absorb the UV-C light before it can reach the
Earth's surface. Therefore, where there
is low stratospheric ozone, more UV (A, B & C) light from the sun passes
through the atmosphere to hit earth and heat it up.
The
initial products from high energy UV-C light hitting a CFC molecule are a
chlorine atom and an organic radical, considering CFC-11 (trichlorofluoromethane):
CCl3F + UV-C light = CCl2F + Cl
The free chlorine atom can then
react with ozone to form ClO:
Cl
+ O3
-> ClO + O2
The ClO in
turn will react with nascent oxygen (O) to release a chlorine atom; thus, a
continuous destruction of ozone occurs because the chlorine atoms are not
sequestered into stable compounds:
ClO
+ O -> Cl + O2
The CFC chlorine can take other
reaction paths, but this is believed to be the predominant ozone destruction
cycle. It has been estimated that one
CFC molecule in the stratosphere will destroy 100,000 molecules of ozone over
its natural lifetime there. Though
the concentration of CFCs is only 3 ppbv, they have
the ozone destruction effect of a concentration of 0.03% based on one reaction
per ozone molecule.
Figure 9
shows a correlation of CFC concentration and average stratosphere and earth
temperature plotted versus time. As shown by the arrows, in a logical sequence,
CFC concentration started to drop first causing a reduction in stratospheric
cooling and then a reduction in earth warming.

Figure 9. Stratospheric
cooling, earth warming and CFC concentration.
When
one sees like trends, it is a good indication that the trends are related to
one another. Contrarily,
when one looks at CO2 concentrations versus earth temperature there
is no trend whatsoever that shows increased CO2 concentrations
increase global temperature. The
only observable trend between the two is that a global spike from the sun
creates a higher temperature on earth and some 800 years or so later the CO2
concentrations in the atmosphere start to increase.
Large
solar heating-cooling cycle variations occur every 80,000 to 110,000 years, but
the sun's thermostat also regularly increases and decreases in shorter term
cooling-warming cycles (approximately 11 years) 16, see Figure
10. For the mass and energy balances
completed, to eliminate the short-term solar irradiance warming-cooling cycle
effect on global warming, the period from 1966 to 1998 was chosen. At these two points in time, the solar
irradiance hitting the earth was approximately the same (1368.8 W/m2).
According
to NASA, the lower stratosphere and upper troposphere, both of which have
cooled together 17, extends from 8 to 19 km above the surface of the
earth with the lower troposphere being in the 0 to 8 km elevation zone. Knowing how much the lower
stratosphere-upper troposphere cooled and how much the lower troposphere-earth
warmed, mass and energy balances could be made to determine how much more
radiant energy hit the earth in 1998 compared to 1966 due to the destruction of
ozone.

Figure 10. Solar irradiance
cycle effect on earth.
Table
1 shows the mass and energy balances completed around the lower
stratosphere/upper troposphere (8-19 km above sea level) zone, 1966 versus 1998
based on measured atmospheric temperatures that showed these zones had cooled
1.37 oC over this time span. The mass and energy balance in Table 2 shows
the effect of the additional energy being absorbed by the troposphere/earth
(surface to 8 km above sea level) in 1998 compared to 1966. It is similar to this. Say you have one million pounds of
water. You measure the temperature of
the water, and then you add one million Btus of
energy to it and measure the temperature again to find it has raised 1 oF. The additional UV radiation passing through
the upper atmosphere is sufficient to heat the lower troposphere and the top
8-3/4 inches of the earth by 0.48 oC. The temperature of the lower troposphere and
8-3/4" of earth (land and water) in 1966 had an average heat content of
9.7755 x 10 20 Btu and in 1998; it had a heat content of 9.7924 x 10
20 Btu. The added instantaneous UV
energy that hit the earth in 1998 was 1.6855 x 1018 Btu. The added energy hitting the earth was used
to first heat the troposphere and the remaining energy was then applied to heat
land and water. To make the energy
balance, 8-3/4" of earth/water needed to be heated.
TABLE 1.
UV-B LIGHT NOT ABSORBED IN UPPER TROPOSPHERE/LOWER STRATOSPHERE

TABLE 2.
HEAT ABSORBED IN LOWER TROPOSPHERE AND EARTH SURFACE
Ozone
Signature Present but No Greenhouse Signature
There are several possible causes of
global warming, and they each warm the atmosphere at different latitudes and
altitudes, that is, each cause will produce a distinct pattern of hot spots in
the atmosphere, or “signature”. The
greenhouse signature is very distinct from the others; warming due to a
greenhouse effect would cause most warming in the tropics at about 10 km up in
the atmosphere 18.
If
the IPCC is right about a greenhouse effect, do actual temperature measurements
show a hot spot like they predict from their signature modeling efforts? The answer is no! Therefore, one cannot in good conscience say
CO2 is causing global warming through a greenhouse effect that is
not there. It exists, but there is no
signature for its existence?
Temperature
in the atmosphere has been measured for decades using radiosondes
(a technique where weather balloons with thermometers radio back the
temperature as the balloon ascends through the atmosphere). Actual measured temperatures (Hadley
Centre radiosonde observations) for 2006-2007 are shown in Figure 11. The measurements show mostly warming in the
troposphere and on earth with cooling in the stratosphere

Figure 11.
Observed signature from actual measurements 19.
The
axes for the observed temperatures are as per the signature diagrams developed
by the IPCC shown in Figure 12. However,
the horizontal axis only goes from 75 degrees north to 75 degrees south, there
is no data around 60 degrees south, the vertical axis only goes up to 24 km and
there was no data above 20 km for the equator area. The vertical axis shows the height in the
atmosphere in kilometers (km) and the atmospheric pressure in hectopascals (hpa).
The
six theoretical computer model signatures developed (Figures 12 a through f) by
the IPCC 20, which is the most authoritative document for those who
believe carbon emissions have caused global warming. In each diagram, the horizontal axis is the
latitude, from the North Pole through the equator to the South Pole. The colored regions on each
diagram, shows where the temperature changes occur for each possible cause. Here also, the vertical axis shows the height
in the atmosphere in kilometers (km) and the atmospheric pressure in hectopascals (hpa).
Figure 12.
IPCC projected climate change signatures.
Figure
12a is the signature developed for increased solar irradiation. If this signature were present, the warming
would be moderate through most of the stratosphere and troposphere. This effect is not seen.
Figure
12b is the signature of a large volcanic eruption producing huge clouds of ash
and fumes. If this signature were
present, there would be moderate warming above 14 km, and moderate cooling
below that. The opposite of this effect
is seen, cooling in the stratosphere and warming in the troposphere.
Figure
12c is a signature of an increase in greenhouse gases, including carbon
dioxide. If this signature were present,
warming would be concentrated in a distinct “hot spot” about 8 to 12 km up over
the tropics, with less warming further away, turning to cooling above 18 km. No
"hot spot" seen.
Figure
12d is a signature of increased ozone depletion (both tropospheric
and stratospheric). The ozone signature
shows moderate warming below 12 km and moderate cooling above 12 km. This
effect is seen and was probably more pronounced in 1998 when it was hotter on
the earth than it was in 2007.
Figure
12e is a signature of increased industrial pollution, specifically direct
sulfate aerosols. If this signature were
present, there would be moderate cooling below 14 km mainly in the northern
hemisphere and moderate warming above 14 km over the tropics. A little bit of this could be occurring
around the equator and in the southern hemisphere.
Figure
12f is the signature that was expected by the IPCC, developed by combining the
five signatures. The combination was
made in the proportions the IPCC believed those causes contributed to global
warming. The distinct "hot
spot" at 8 to 12 km high over the tropics due to increased greenhouse
warming dominates the theoretical combined signature. Actual measurements do not show this effect.
There
is clearly no "hot spot" as the IPCC predicted; the "greenhouse
signature" is absent, which means greenhouse gases did not cause the earth
to warm. After the greenhouse signature
was found to be missing, alarmists objected by saying the readings of the radiosonde thermometers might not be accurate and maybe the
hotspot is there but went undetected.
The uncertainties in temperature measurement from one radiosonde is large enough to miss the hotspot;
however, hundreds of radiosondes have given the same
answer, so statistically it is not possible that they collectively failed to
notice the hotspot.
The
signature that is the closest to the actual warming signature is the
"ozone depletion signature"; refer back to Figure 12d where it showed
moderate warming below 12 km and moderate cooling above 12 km. This effect dominates in the northern
hemisphere from 20o to 75oN north. It is not an exact fit for the observed
signature all over the globe but clearly appears to play the dominant
role. The ozone signature also shows
greater warming in the North Polar Region like is currently seen. In the IPCC ozone signature presented, there
was no projection for the South Polar Region.
Effects like industrial pollution and other currently unknown effects
could be playing minor roles based on the IPCC models.
Conclusion
Many
factors can influence the earth's temperature.
However, from a scientific analysis, there is not a greenhouse signature
in the atmosphere as implied by the IPCC.
The non-effect of CO2 is also clearly shown, by an earth
temperature drop of almost 0.6 oC from
January 2007 to January 2008. It should
be obvious to everyone who has analyzed climate change that climate-driving
forces, other than CO2, control the temperature.
As
this paper addresses, chlorofluorocarbon destruction of stratospheric ozone can
be correlated nicely with both the cooling and warming temperature anomalies
seen over the time span from 1966 to 1998 and the ozone signature for global
warming is the closest of the five signature impacts developed by the
IPCC. Further, one can account for most,
if not all, of the 0.48oC rise in earth's temperature from 1966 to
1998 with the additional UV light that hit the earth due to ozone destruction
in the upper atmosphere. Further, the
"ozone depletion signature" developed by the IPCC for the atmosphere
is seen but not the "greenhouse signature".
Ozone
destruction has also indirectly created an increase in CO2
concentrations due to the melting of the permafrost in Siberia that has warmed
two and one-half (2˝) times more than the average earth temperature has
risen. The higher temperatures started
melting the permafrost, and this in turn created a significant release of
methane. Methane slowly reacts with
oxygen to convert to CO2 in the atmosphere.
Unless
we remove the CFCs from the atmosphere, it appears that the whole earth will
continue to be warmer than normal and higher concentrations of CO2
(from permafrost release of methane) will exist until the CFCs in the
stratosphere slowly disappear naturally over the next 50-100 years. The exceptions that could alter this are
large volcanic eruptions or weather modification techniques as proposed by
physicist Freeman Dyson, wherein fine particulate, such as bauxite (Al2O3),
is sprayed into the stratosphere to simulate a volcanic eruption, which would
absorb more UV light in the stratosphere and cool the earth as shown in the
IPCC modeled signature for volcanic eruptions.
China
and other developing countries are to phase out CFC production in 2010. Some CFC production plants have been shutdown
ahead of schedule in these developing countries, which is very beneficial. However, it would not be that difficult to
remove CFCs from the atmosphere to bring earth's temperature back to normal
much quicker. Although the atmosphere is
intricate in how it acts and reacts, CFCs appear to be the dominant cause of
the greater than normal earth warming from 1966 to 1998, not CO2.
Einstein
(21) once said, "The grand aim
of all science is to cover the greatest number of empirical facts by logical
deduction from the smallest possible number of hypotheses or axioms". One can do that here using CFC destruction of
ozone to explain the observed recent earth temperature anomalies.
The
United States Congress will be considering a $1.2 trillion carbon tax this year
that, if implemented, would make the recent increase in the cost of gasoline
look pale in comparison to the price it will be after such a tax is
imposed. Taxing carbon makes absolutely
no sense and will dramatically hurt the economy of every country that
implements it - all for no useful reason!
This paper is a direct challenge to the IPCC; its models are way off
base. When one develops a model, actual
data needs to be observed to confirm or refute the model that one
develops. It does not look like the
IPCC knows this.
Acknowledgements
I would like to thank Christopher
Monckton and David Evans for their support and suggestions. Most of all I would like to pay tribute to
three gentlemen; Paul Crutzen, Sherwood Rowland, and
Mario Molina, who saved this earth through their work on the CFC effect on the
environment. If they had not worked to
stop CFC production, what we are seeing now with global warming would be
nothing compared to how bad it would have been without their efforts to stop
its production. Their work was not only
important from the standpoint of reducing global warming, but also in reducing
the occurrence in skin cancer.
References
(1) Wigley, T.M.L.,
1998. Geophys. Res. Lett., 25,
2285-2288.
(2) IPCC, 2007: Climate Change 2007: The Physical
Science Basis. Contribution of Working
Group I to the Fourth Assessment Report of the Intergovernmental Panel on
Climate Change. Editors: Solomon, S., D. Qin, and M. Manning.
(3) Nahle, N., Noriega, W. and Nahle, A. S. H. 2006.
"Global
Tropospheric Temperature Deviations since the
Medieval Age". ©Biology
Cabinet Organization. Obtained
from http://www.biocab.org/MGW_to_2006.html.
Data Sources for developed graph: M.L. Khandidar,
et. al, "The Global
Warming Debate: A Review of the State of the Science", Pure Applied
Geophysics; 162 (2006). K.J. Kreutz et. al, Bipolar Changes in Atmospheric Circulation
During the Little Ice Age", Science; Vol 277,
Issue 5330; pp 1294-1296, Aug. 29, 1997.
Keith R. Briffa and Timothy
J. Olsen, "PALEOCLIMATE; Blowing Hot and Cold", Volume 295; Issue
5563; pp 2227- 2228, March 22, 2002.
NOAA/NASA/TIROS-N; http://www.science.nasa.gov.
(4) "Climate and Atmospheric History of the past
420,000 years from the Vostok Ice Core,
Antarctica", by Petit J.R., Jouzel J., Raynaud D., Barkov N.I., Barnola J.M., Basile I., Bender
M., Chappellaz J., Davis J. Delaygue
G., Delmotte M. Kotlyakov
V.M., Legrand M., Lipenkov
V.M., Lorius C., Pépin L.,
Ritz C., Saltzman E., Stievenard M., Nature, June 3,
1999.
(5) "Correlation Last Decade and This Century CO2 and Global
Temperatures Not There" by
Joseph D’Aleo, Certified Consultant Meteorologist, Fellow of the
American Meteorological Society (AMS), and Executive Director of Icecap.us http://icecap.us/images/uploads/Correlation_Last_Decade.pdf
(6)
"Climate Change 2001: The Scientific Basis Contribution of Working Group I to
the Third Assessment Report of the Intergovernmental Panel on Climate Change
(IPCC) J.
T. Houghton, Y. Ding, D.J. Griggs, M. Noguer, P. J.
van der Linden and D. Xiaosu
(Eds.)Cambridge
University Press, UK
(7) "Climate Change 2001: The
Scientific Basis Contribution
of Working Group I to the Third Assessment Report of the Intergovernmental
Panel on Climate Change (IPCC) J. T. Houghton, Y. Ding, D.J. Griggs, M. Noguer,
P. J. van der Linden and D. Xiaosu
(Eds.)Cambridge
University Press, UK. pp 944.
(8)
"Methane bubbling from Siberian thaw lakes as a positive feedback
to climate warming", Nature (Sept. 7, 2006), Jeff Chanton,
Florida State University; K. M. Walter and D.Verbla,
University of Alaska-Fairbanks; S.
A. Zimov, Northeast Science Station, Cherskii,
Russia.
(9)
Nobel Prize in Chemistry, The Rotal Swedish
Academy of Sciences , October 11,1995.
http://nobelprize.org/nobel_prizes/chemistry/laureates/1995/press.html
(10) Graph from data developed by Paul Newman of
National Aeronautics and Space Administration Goddard Space Flight Center
(11)
Data from HadAT2 radiosonde developed by the
United Kingdom Met Office Hadley Centre.
(12) Brohan, P., J.J. Kennedy, I. Harris,
S.F.B. Tett and P.D. Jones, 2006: Uncertainty
estimates in regional and global observed temperature changes: a new dataset
from 1850. J. Geophysical Research 111, D12106, doi:10.1029/2005JD006548
(13)
Impacts of a Warming Arctic: Arctic Climate Impact Assessment, ACIA Overview report, Cambridge University Press, 2004
(14)
"Australia State of the Environment 2001 Independent Report to the Commonwealth
Minister for the Environment and Heritage, graph and projections provided by Madronich & Velders
(15) R. Zander,
M. R. Gunson, C. B. Farmer, C. P. Rinsland,
F. W. Irion, and E. Mahieu, "The 1985 chlorine
and fluorine inventories in the stratosphere based on ATMOS observations at 30
degrees North latitude", J. Atmos. Chem. 15, 171, 1992.
(16) Lean, J. 2000. Evolution of the Sun's Spectral Irradiance Since the Maunder minimum. Geophysical Research Letters,
Vol. 27, No. 16, pp.2425-2428, Aug. 15, 2000
(17) Duan, A. (2007),
"Cooling trend in the upper troposphere and lower stratosphere over
China", Geophys. Res.Lett., 34
(18) "Carbon Emissions Don't Cause Global
Warming, November 28, 2007", Dr David Evans, Former Greenhouse Accounting
Specialist for the Australian Greenhouse Office.
http://icecap.us/images/uploads/Evans-CO2DoesNotCauseGW.pdf
(19)
HadAT2 radiosonde
observations, from US
Climate Change Science Program (2006), p.
116, fig. 5.7E.
(20) Intergovernmental
Panel on Climate Change (IPCC), 2007, p. 675, based on Santer
et al, 2003. See also IPCC, 2007,
Appendix 9C).
(21)
L. Barnett, The Universe and Dr. Einstein, (William
Sloane Associates, New York, 1947) p. 110.