An upper limit to the greenhouse effect of Earth's atmosphere

1989 ◽  
Vol 40 (3) ◽  
pp. 171-174 ◽  
Author(s):  
S. B. Idso
Keyword(s):  
Greenhouse Effect ◽  
Earth’S Atmosphere ◽  
Upper Limit ◽  
Earth's Atmosphere

scholarly journals Potensi Simpanan Karbon pada Tegakan Revegetasi Lahan Pasca Tambang PT Holcim Indonesia Tbk

2020 ◽  
Vol 11 (2) ◽  
pp. 89-95
Author(s):  
Omo Rusdiana ◽  
Syidik Fahmi
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Effect ◽  
Carbon Stock ◽  
Total Carbon ◽  
Site Quality ◽  
Earth’S Atmosphere ◽  
Diameter Increment ◽  
Average Temperature ◽  
Earth's Atmosphere ◽  
Destructive Methods

Global warming is a gradual increase in the average temperature of the Earth’s atmosphere caused by the increased volumes of greenhouse gases such as carbon dioxide, methane, and nitrous oxide. Greenhouse gases is trapped inside the atmosphere and caused UV radiation difficulty passing through Earth’s atmosphere, a processed is often referred to as the greenhouse effect. Reclamation and revegetation activities were expected could decrease the greenhouse effect. The aims of the research is to estimate total carbon stock in Pine Forest age 2005 or 11 years and 2012 or 4 years, and also to compare the result with former research in post mining revegetation site PT Holcim Indonesia Tbk. Biomass measurement of trees, poles, and saplings is conducted with non-destructive methods meanwhile biomass measurements of understorey, litter, and necromassa used destructive methods. The result showed that the value of biomass and carbon stock on the 2005 pine stand is acquired 75.31 tons/ha and 35.39 tons/ha. The value of the biomass and carbon stock on the 2012 pine stand is acquired 12.72 tons/ha and 5.98 ton/ha or increased from the previous year's measurement. Increasing of biomass content and carbon stocks is caused several factors such as increasing of diameter increment dan site quality. Keywords: biomass, carbon, reclamation

scholarly journals Impact on CO2 Uptake of MWCNT after Acid Treatment Study

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Michal Zgrzebnicki ◽  
Nikola Krauze ◽  
Andżelika Gęsikiewicz-Puchalska ◽  
Joanna Kapica-Kozar ◽  
Ewa Piróg ◽  
...  
Keyword(s):  
Greenhouse Effect ◽  
Photoelectron Spectroscopy ◽  
Acid Treatment ◽  
Activated Carbons ◽  
Area Measurement ◽  
Co2 Uptake ◽  
Relative Pressure ◽  
Earth’S Atmosphere ◽  
Average Temperature ◽  
Earth's Atmosphere

Greenhouse effect is responsible for keeping average temperature of Earth’s atmosphere at level of about 288 K. Its intensification leads to warming of our planet and may contribute to adverse changes in the environment. The most important pollution intensifying greenhouse effect is anthropogenic carbon dioxide. This particular gas absorbs secondary infrared radiation, which in the end leads to an increase of average temperature of Earth’s atmosphere. Main source of CO2 is burning of fossil fuels, like oil, natural gas, and coal. Therefore, to reduce its emission, a special CO2 capture and storage technology is required. Carbonaceous materials are promising materials for CO2 sorbents. Thus multiwalled carbon nanotubes, due to the lack of impurities like ash in activated carbons, were chosen as a model material for investigation of acid treatment impact on CO2 uptake. Remarkable 43% enhancement of CO2 sorption capacity was achieved at 273 K and relative pressure of 0.95. Samples were also thoroughly characterized in terms of texture (specific surface area measurement, transmission electron microscope) and chemical composition (X-ray photoelectron spectroscopy).

Radio astronomical measurements from earth satellites

1959 ◽  
Vol 253 (1275) ◽  
pp. 494-500 ◽  
Keyword(s):  
Low Frequency ◽  
Radio Spectrum ◽  
Absorption Bands ◽  
Frequency Limit ◽  
Low Frequencies ◽  
Earth’S Atmosphere ◽  
Upper Limit ◽  
The Earth ◽  
Earth's Atmosphere

It may be thought that radio astronomical measurements made on the earth are not subject to the influence of the atmosphere and ionosphere to any great extent and that consequently there is no demand for measurements from earth satellites or other space stations. Unfortunately this is not the case and certain measurements from outside the earth’s atmosphere are very much desired. The radio spectrum so far explored extends from a low frequency limit in the 10 to 20 Mc/s band, to an upper limit in the millimetre waveband. In the millimetre band the limitation to the extension of the spectrum arises from absorption bands in the atmosphere, whereas at low frequencies the extension is limited by absorption and disturbances in the ionosphere. In this paper some examples will be given of the need to overcome these obstacles.

Digging in the Noise

2020 ◽  
pp. 206-220
Author(s):  
David A. Weintraub
Keyword(s):  
Martian Atmosphere ◽  
Computer Models ◽  
Huge Amount ◽  
Methane Gas ◽  
Earth’S Atmosphere ◽  
Upper Limit ◽  
Earth's Atmosphere ◽  
Mariner 9

This chapter highlights the emergence of the Martian methane saga from its hibernation in 1988 when Vladimir Krasnopolsky and his colleagues undertook a study of the Martian atmosphere. It explains how the methane gas in the Earth's atmosphere absorbs light at nearly the same wavelengths as the methane in the Martian atmosphere, obscuring any possible signature of Martian methane in telescopic observations. It also recounts Krasnopolsky and his colleagues' construction of computer models that allowed them to subtract the effects of the huge amount of terrestrial methane from their spectral observations of Mars. The chapter looks at the decision of Krasnopolsky's team to neither confirm nor contradict the Mariner 9 upper limit, even after they made a definitive detection of methane on Mars. It emphasizes that the attempt to measure the level of methane in the atmosphere of Mars using a telescope in Arizona in 1988 yielded only noise.

The Effect and Strategy of Global Warming

2015 ◽  
Vol 1092-1093 ◽  
pp. 1625-1628
Author(s):  
Le Hui Huang ◽  
Miao Miao Li
Keyword(s):  
Global Warming ◽  
Greenhouse Effect ◽  
Earth’S Atmosphere ◽  
The Earth ◽  
Earth's Atmosphere

Global warming is one of the biggest environment challenges in front of human today. The earth’s atmosphere and clouds have the function of insulation, making the earth maintain a certain temperature in the night. The earth is in a serious greenhouse effect due to increasing pollution. The paper explains how to deal with and curb global warming.

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