One of the strongest pieces of evidence for human-induced climate change is the consistent rise in carbon dioxide (CO2) in modern times, as measured at the Mauna Loa Observatory in Hawaii, where CO2 has been observed since 1958. As of 2005, the concentration of CO2 in Earth’s atmosphere was about 378 parts per million (ppm).

Green-e Climate is primarily aimed at emission reductions from the six primary greenhouse gases-carbon dioxide, nitrous oxide, methane, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride (CO2, N2O, CH4, HFCs, PFCs and SF6) that are included under the Kyoto Protocol. Green-e Climate only verifies and certifies offsets comprising GHG emission reductions already verified and certified according to an Endorsed Program's protocols.

If we start with 1000 cubic feet of natural gas (and assuming it is pure methane or CH4) at STP (standard temperature and pressure, i.e., temperature of 273&#176K = 0&#176C = 32&#176F and pressure of 1 atm = 14.7 psia = 760 torr), and burn it completely, here's what we come up with: Since 1 mole of a gas occupies 22.4 L at STP, 28316.85 L of CH4 contains 28316.85/22.4 = 1264.145 moles of CH4 (each mole of CH4 = approx. 16 g) One mole of CO2 has a mass of approx. 44 g, so 1264.

Yes.Therapeutic laser treatment with carbon dioxide lasers has become more and more popular. This does not require instruments expressly designed for that purpose. Practically any carbon dioxide laser can be used as long as the beam can be spread out over an appropriate area, and as long as the power can be regulated to avoid burning. This can always be achieved with an additional lens of germanium or zinc selenide, if it cannot be done with the standard accessories accompanying the apparatus.

Humans exhale about 1 kg of carbon dioxide per day (http://cdiac.esd.ornl.gov/pns/faq.html). The exact amount depends on age, sex, size, and most importantly activity level. Multiply that by a world population of six billion and you get a very large number. However, human exhalation of carbon dioxide is part of a closed system.

The gas that humans and animals breathe out and that plants use during photosynthesis to produce oxygen.

Supercritical fluid extraction has emerged as an attractive separation technique for the food and pharmaceutical industries due to a growing demand for "natural" processes that do not introduce any residual organic chemicals. Supercritical carbon dioxide is by far the most commonly used supercritical fluid.

Oil production totaled 42,692 barrels from 18 producing wells in 2007, down from 54,807 barrels from 20 wells in 2006. Gas production totaled 650 million cubic feet from 7 producing gas wells, up from 608 million cubic feet from 7 wells in 2006. No CO2 was produced in 2007. There was one active disposal well and 23 shut-in wells at yearend including 20 oil, 1 gas, 1 CO2, and 2 disposal wells.

Natural gas is primarily methane, which is a major greenhouse gas. Methane is emitted directly to the atmosphere from sources such as leaks in natural gas wells and pipelines and is produced in landfills, sewage treatment facilities and livestock operations. Other major greenhouse gases, carbon dioxide and nitrous oxides are produced when natural gas is burned for heating and electric power production.

The greenhouse gas estimates presented here are full fuel-cycle estimates, combining the three major greenhouse gases emitted by motor vehicles: Full fuel-cycle estimates include all steps in the use of a fuel, from production and refining to distribution and final use. This gives a more complete picture of the climate change impacts of using a particular fuel. Some greenhouse gases have greater impacts on climate than others.

There are six main greenhouse gases, the most common of which are carbon dioxide (C02), methane (CH4) and nitrous oxide (N20). These are all produced from human activity - C02 from transport and energy; CH4 mainly from animals burping out the gas as they digest their food; N20 mainly from agriculture such as the use of fertiliser and when animals urinate.

Carbon dioxide persists for more than a century in the air. Methane’s average lifetime is about 11 years.

The Program Developed for CO2 System Calculations (ORNL/CDIAC-105), recently released by Ernie Lewis, Department of Applied Science, Brookhaven National Laboratory, and Doug Wallace, Abteilung Meereschemie, Institut fuer Meereskunde, was developed to help calculate inorganic carbon speciation in seawater.

The properties which make supercritical carbon dioxide an attractive solvent for extraction also apply to its use as a medium for reaction chemistry. A fluid's most important physical and transport properties that influence the kinetics of a chemical reaction are intermediate between those of a liquid and a gas in the supercritical carbon dioxide. The reactants and the supercritical carbon dioxide frequently form a single supercritical fluid phase.

Various types of pumps can be used for supercritical fluid applications. For medium to large volume processes, a pneumatic booster pump is most often used. A diaphragm pushes against a piston to compress the liquid carbon dioxide to a set pressure point. The air that drives the pump increases the liquid carbon dioxide pressure (boosts) in a ratio of about 100 to 1. So for every 1 psi of air delivered to the pump, the carbon dioxide pressure is boosted by 100 psi. (i.e. Air at 50 psi.

The Program Developed for CO2 System Calculations (ORNL/CDIAC-105), recently released by Ernie Lewis, Department of Applied Science, Brookhaven National Laboratory, and Doug Wallace, Abteilung Meereschemie, Institut fuer Meereskunde, was developed to help calculate inorganic carbon speciation in seawater.

A 1,300-kilowatt mill generates the electric energy consumed during the course of a year by one thousand homes, which is he equivalent to saving two thousand barrels of oil and avoiding emitting three thousand tonnes of carbon dioxide. The power installed in Galicia by 2010 is estimated at 6,500 MW, which means an annual saving of 28.4 million barrels of petrol and, 715 million Euro for the Spanish economy.

It depends. View references of papers relating to forest management, biomass fuels, and CO2 emissions to the atmosphere. [GM] See new document, Answers to ten frequently asked questions about bioenergy, carbon sinks and their role in global climate change, by Robert Matthews and Kimberly Robertson, prepared as part of IEA Bioenergy Task 38 (Greenhouse Gas Balances of Biomass and Bioenergy Systems).