Climate Definition and 182 Threads

http://sciences.blogs.liberation.fr/home/files/Courtillot07EPSL.pdf I have been looking into puzzling cyclic changes the geomagnetic field which appear to be solar driven as they match the solar magnetic cycle timing. The sun is moved by the large planets about its barycenter. The change in...

I've been aware of this work for a couple of months, and it has at last got through the review processes and has been accepted for publication. Annan, J.D., and Hargreaves, J.C. (2009) On the generation and interpretation of probabilistic estimates of climate sensitivity, to appear in Climatic...

In the thread about mammoths and climate scepticism, we have seen that the fossil remains of the Arctic Siberian mammoth steppe suggest that is was actually warmer than today, at least during summers. This mammth steppe existed throughout most of the final stages of ice age, the late Wisconian...

It may be known that the roots of current climate concerns and alarmism are in the study of paleo climate, especially the last 'ice age' http://www.aip.org/history/climate/ It seems that things all add up, especially ice core records and proxies as well as oceanic isotope proxies. However...

1. Why did the Earth's climate cool so much during the Cenezoic? 2. Will global warming (if nothing is done about it) cause the climate to return more or less to what it was before it? If so, how would that affect life as it is today (who loses and who benefits, for example will corals survive)?

Came across a 2007 study concerning climate sensitivity. It was published by the Journal Nature, but only as a letter. Can't say exactly why they do that, but it probably hasn't been scrutinized as closely as it would be otherwise. Anyhow, in this study, atmospheric CO2 concentrations over...

Last year saw several publications about the climate of the past. I call to the stand, http://www.pnas.org/content/early/2008/09/02/0805721105.full.pdf+html about a reconstruction of the global temperatures in the last 2000 years and http://www.pnas.org/content/105/41/15815.full.pdf+html about a...

A new study is published, "A surrogate ensemble study of climate reconstruction methods: Stochasticity and robustness." From the abstract: http://web.dmi.dk/solar-terrestrial/staff/boc/reconstr.pdf of the full article

http://www.sciencedaily.com/releases/2009/02/090216092824.htm Quote. The Younger Dryas event, which began approximately 12,900 years ago, was a period of rapid cooling in the Northern Hemisphere, driven by large-scale reorganizations of patterns of atmospheric and oceanic circulation...

http://webusers.ct.astro.it/gca/papers/telluric.pdf Would it be possible to use telluric lines to give accurate measurements of atmospheric gases along with synchronous Earth temperature measurements, thus giving an index for gas abundance and variation of heat transfer through same gases...

I'd be interested in any ideas or theories or references on how the location of the continents is thought to affect global warming and cooling cycles. I previously read somewhere that the current position of the continents would cause different net solar heat absorption/reflection than prior...

Just thought i should flag this page, there seems to be some good stuff there. http://www.atmos-chem-phys.net/recent_papers.html

Did climate change aid the fall of the Roman empire in the eastern Mediterranean between 100ad and 700ad ? http://www.sciencedaily.com/releases/2008/12/081205171005.htm I would think there are some ancient written records to check against.

A http://www.cdejager.com/wp-content/uploads/2008/11/solaractivandclimate-nethjgeosci.pdf of eminence grise Cees de Jager. If you think it's too old, check that Silvia Duhau and Dirk Callebaut are credited for their support. Anyway in the abstract:

Has anyone ever researched what contribution, if any, the actual combustion of fossil fuels contributes to global warming? If you added up all the BTU's of energy which have been released in the last few decades, would it add up to something or is it negligible? Of course, all motion due to...

http://arxiv.org/abs/0809.3762 Richard Lindzen is a professor of climatology at MIT, was a member of the IPCC, and is well-known as a climate change skeptic.

http://arxiv.org/ftp/arxiv/papers/0809/0809.3762.pdf

The new hockeystick is http://www.pnas.org/content/early/2008/09/02/0805721105.full.pdf the abstract: They use two methods of reconstruction: About those methods they observe: So looking at this reconstruction we see the EIV showing a distinct medieval warm period and what also...

[SIZE="2"]While I have quickly looked at Monique's sticky thread on ‘Reviews on Global Warming’ I believe the scope of this thread is still relevant. If not, please delete, as I was only making a general inquiry. -------- It appears that the media, in general, is now committed to...

For a brief moment it appeared that the American Physical Society had reversed its stance on climate change: http://www.dailytech.com/Myth+of+Consensus+Explodes+APS+Opens+Global+Warming+Debate/article12403.htm However look at the red text above the article...

http://www.sciencealert.com.au/opinions/20081007-17643.html It’s an assertion repeated by politicians and climate campaigners the world over: “2500 scientists of the United Nation’s Intergovernmental Panel on Climate Change (IPCC) agree that humans are causing a climate crisis.” But it’s not...

http://www.sciencealert.com.au/opinions/20081007-17643.html It’s an assertion repeated by politicians and climate campaigners the world over: “2500 scientists of the United Nation’s Intergovernmental Panel on Climate Change (IPCC) agree that humans are causing a climate crisis.” But it’s not...

I've been working on a task in the area of astronomy, regarding influence on climate by astronomical factors. However, the work is rather tough and I have a problem on wording of "amplitude of precession". You definitely know about the precession of Earth's axis, once in 25 765 years. It is...

Legendary Climate Scientist Says "Last Chance" to Stop Global Warming WASHINGTON - Exactly 20 years after warning America about global warming, a top NASA scientist said the situation has gotten so bad that the world's only hope is drastic action. James Hansen told Congress on Monday that...

“Climate” is distinguished from “weather”, in that weather is the day-to-day state of the atmosphere and environment, whereas climate is the statistical average of weather patterns over a limited region and a long period (usually, minimum 30 years). A number factors have some influence on...

Who Believes In Climate Change?? Random question, but I'm not sure if the government is just using climate change as a reason to push forward carbon taxing etc. :approve: Btw, I recycle. :cool:

I posed this question to my brother and father-in-law yesterday and they disagreed with the premise of the question, let alone the result. They debated the physics involved. Weather is generally a result of the sun's uneven heating of the atmosphere and the resulting convection currents, ie...

http://arxiv.org/PS_cache/arxiv/pdf/0804/0804.1938v1.pdf

'The first age, the Phyllocian era, lasted from just after the planet's birth to about four billion years ago. Ancient rocks show the presence of clay-rich minerals - phyllosilicates - which to form would have required a water-abundant alkaline environment. Volcanoes erupt The second era...

The Pope condemns the climate change prophets of doom Do you think it is appropriate for a religious leader of billions to make such statements about things that are, honestly, quite outside his range of 'expertise'? If one called the IPCC biased and/or politically motivated, what can one...

The global warming skeptics advance arguments against the conclusions of the IPCC. They argue that anthropogenic global warming has not been "proven". But there is no such thing as scientific proof. There are merely falsifiable theories. The 'proof' of a positive theory is simply the result...

http://news.yahoo.com/s/nm/20070812/sc_nm/climate_uncertainty_dc;_ylt=Ag1yFddYptlo6iNlm.Fyz0r737YB

Years of bad data corrected; 1998 no longer the warmest year on record http://www.dailytech.com/Blogger+finds+Y2K+bug+in+NASA+Climate+Data/article8383.htm A friend of mine just pointed this out to me. Very... interesting. Edit by Ivan: copyright violation. Please quote only...

Oh no, not another global warming thread! But seriously, I read that CO2 accounts for ~20% of the greenhouse effect on Earth, we are undoubtedly raising the amount of this (and other) greenhouse gases in the atmosphere. The greenhouse effect is very important in determining the lower...

We are all doomed, if climate change does not get us, some thing will impact the Earth and kill us, will some one get it right ,the suspense is killing me.

It has been observed lately that I'm a bit passionate fighting the global warming myth. Before starting the paleo climate business in this thread, I think it's good to explain why. I used to be a fighter pilot and as such I had no issues with climate whatsoever. That job is a bit demanding so...

We have seen http://home.earthlink.net/~ponderthemaundercf/id12.html, she has decided that: and moreover: However, let's have a look at the http://www.royalsoc.ac.uk/news.asp?id=6245 . Like Kristen, it has also a scope of work. First a little vitriol also aimed at Kristen to...

Hi all Iam doing my master's degree. I want help regarding implementing Automatic climate control. I found one in MATLAB but it doesn't meet my specifications. Can anyone help giving me any idea or providing equations regarding AirConditioner and Heater.

Where do folk here currently stand on the issue of climate change?

Here is the abstract. And here is a related article. With the arctic ice melting, should we expect a weakening of the warm northerly flow? Since we are in the midst of a giant atmospheric experiment, with the only currently habitable planet that we have, I wonder how much understanding...

Is it the Earth's wobble that is responsible for all of our global warming debates?! Can it be completely ruled out as a major contributor? http://www.physorg.com/news79791441.html

Organizing a critical climate review in Stockholm has been compared to organizing a meeting of capitalists on the Red Square of Communist Moscow, but I think that's greatly exagarated http://gamma.physchem.kth.se/~climate/ Never mind but perhaps browse around a bit and perhaps consider...

Hi there. I have two questions to make. First how do you imagine to be Pluto's surface, climate and atmosphere? And second how much time does the sun light to reach Pluto? Please answer, i really want to know about these two things. Thank you.

[SIZE="4"]A new hypothesis for global warming Introduction The current climate change/global warming debate has become highly political, with some people maintaining that the warming over the last 150 years is due to the enhanced greenhouse effect caused by anthropogenic emission of carbon...

There is a lot of debate going on in the media and on forums like these as to whether or not anthropogenic global warming is real. Here is a link to an article in the AAAS Science Magazine that states there is no disagreement between climate scientists as to the consensus, not majority or...

I have been wondering about climate classifications. Based on average annual temperature and precip, a large chunk of the southeast/southcentral United States is lumped into the Humid Subtropical climate zone. But that seems misleading to people with agriculture or gardening interests, since...

Adding fuel to the fire ( :wink: :biggrin: ) of controversy and debate over Global Warming, http://www.npr.org/templates/story/story.php?storyId=5293273 'Weather Makers' - http://www.theweathermakers.com/ Flannery mentions that the 'energy budget' in the atmosphere, which contributes to...

I won't say who said it, but does this sound right to you? Dendrochronolgists on TV all say it so easy, you count the tree rings and the space in between, and that will tell you about the temperature and precipitation and how long the tree lived. Also: This sounds kind of dumb, but what about...

Let's do another one. The idea that humans can and have had a big impact on climate is increasingly thriving. Apparently we are the central factor -Anthropocentrism. It started with Ruddiman who had produced a http://courses.eas.uAlberta.ca/eas457/Ruddiman2003.pdf . How come, well the...

The Earth periodically cools and warms on a large time scale. What causes this fluctuation?