scholarly journals Investigating the relationship between changes in atmospheric greenhouse gases and discharge fluctuations in the Basin of Aras River

2021 ◽  
Author(s):  
Mehdi AALIJAHAN ◽  
Bromand SALAHİ ◽  
Dariush HATAMİ
Keyword(s):  
Greenhouse Gases ◽  
Discharge Fluctuations ◽  
The Relationship ◽  
Aras River

scholarly journals Measurement of Contrails Using ADS-B Data

2016 ◽  
Vol 4 (17) ◽  
pp. 27
Author(s):  
Martin Voráček ◽  
Jakub Hospodka
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Climate Changes ◽  
Gas Production ◽  
Air Traffic ◽  
Air Transport ◽  
Frequency Of Occurrence ◽  
The Relationship

Air transport contributes to climate changes not only by greenhouse gas production but also because of production of contrails. The effect of contrails is less scientifically understood compared to greenhouse gases according to IPCC [3]. In order to be able to research the effect of contrails on the atmosphere, it is necessary to identify their realistic frequency of occurrence and to define the relationship between their occurrence and other factors. The effort to identify and monitor contrails and their dependence on the type of air traffic is the objective of SGS project.

scholarly journals Investigating the relationship between variation of greenhouse gases concentrations and humidex

2018 ◽  
Vol 74 ◽  
pp. 11004 ◽  
Author(s):  
Anies Ma’rufatin ◽  
Haryoto Kusnoputranto ◽  
Kardono
Keyword(s):  
Greenhouse Gases ◽  
Thermal Comfort ◽  
Air Temperature ◽  
Urban Areas ◽  
Negative Relationship ◽  
Co2 Concentration ◽  
Comfort Level ◽  
Human Thermal Comfort ◽  
Ch4 Concentration ◽  
The Relationship

The increasing greenhouse gases (GHGs) in the atmosphere contribute to increasing average temperature earth’s surface. This research investigated relationship between variation of GHGs and human thermal comfort based on humidity index (humidex). This study applied humidex, an indices to assess the thermal comfort. The analysis was done by examining the observational data from two different monitoring stations in Serpong and Bogor. The result showed that the average CO2 concentration per month ranged between 422 and 453 ppm in Serpong, whereas in Bogor the average CO2 concentration per month was 413-426 ppm. The average CH4 concentration per month variation in Serpong was 2.05-2.65 ppm. While in Bogor, the average CH4 concentration per month variation ranged between 1.92 and 2.08 ppm. The difference of GHGs concentration in each location might be influenced by meteorological parameters and environmental characteristics. The comfort level according to humidex in Serpong was 30.5-41.5 whereas in Bogor was 29.4-38.5. The correlation between GHGs concentration and air temperature in urban areas in both stations showed a significant and strong but negative relationship. The relationship between GHGs concentration and humidex was indirectly indicated by the relationship of GHGs concentration on air temperature as indicator of humidex.

Investigation of the relationship between atmospheric mercury and concentrations of key greenhouse gases at a mountainous monitoring site

2015 ◽  
Vol 17 (3) ◽  
pp. 646-655
Author(s):  
Ki-Hyun Kim ◽  
Sudhir Kumar Pandey ◽  
Richard J. C. Brown ◽  
Guey Rong Sheu ◽  
Eui-Chan Jeon ◽  
...  
Keyword(s):  
Water Vapor ◽  
Greenhouse Gases ◽  
Atmospheric Mercury ◽  
Monitoring Site ◽  
Strongly Correlated ◽  
Source Characteristics ◽  
The Relationship

The study at Mt. Gwan-ak (Seoul, Korea) revealed that the behavior of Hg was strongly correlated with water vapor and CH4, suggesting good similarities in their source characteristics.

Effects of 17β-estradiol on typical greenhouse gas emissions in aquatic anaerobic ecosystem

2015 ◽  
Vol 71 (12) ◽  
pp. 1815-1822
Author(s):  
Aidong Ruan ◽  
Chenxiao Liu ◽  
Ying Zhao ◽  
Fengjiao Zong ◽  
Shaopeng Jiang ◽  
...  
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Microbial Populations ◽  
Experimental Conditions ◽  
Methanogenic Activity ◽  
Ch4 Production ◽  
17Β Estradiol ◽  
Micro Organisms ◽  
The Relationship ◽  
Estradiol 17Β

Anaerobic microecosystems designed with different concentrations of 17β-estradiol (17β-E2) (0.0–10,000.0 ng/L) were simulated in this study. The influence of different concentrations of 17β-E2 on the emissions of typical greenhouse gases (CH4 and CO2) in simulated anaerobic microecosystems is analyzed to primarily explore the relationship between 17β-E2 and such emissions in aquatic anaerobic ecosystems. The results showed that 17β-E2 could promote or significantly stimulate aquatic anaerobic micro-organisms' production of CH4. The degree and the promotion time of CH4 production were both enhanced with the increase of 17β-E2 concentration. Furthermore, under higher concentration of 17β-E2 (≥500.0 ng/L), the increasing tendency of aquatic anaerobic microbial populations' activity and the function of methanogenic activity under corresponding experimental conditions had a synchronous relationship.

scholarly journals The covariation of Northern Hemisphere summertime CO<sub>2</sub> with surface temperature in boreal regions

2013 ◽  
Vol 13 (18) ◽  
pp. 9447-9459 ◽  
Author(s):  
D. Wunch ◽  
P. O. Wennberg ◽  
J. Messerschmidt ◽  
N. C. Parazoo ◽  
G. C. Toon ◽  
...  
Keyword(s):  
Greenhouse Gases ◽  
Surface Temperature ◽  
Interannual Variability ◽  
Northern Hemisphere ◽  
Seasonal Cycle ◽  
Atmospheric Transport ◽  
Exchange Model ◽  
Total Carbon ◽  
The Relationship

Abstract. We observe significant interannual variability in the strength of the seasonal cycle drawdown in northern midlatitudes from measurements of CO2 made by the Total Carbon Column Observing Network (TCCON) and the Greenhouse Gases Observing Satellite (GOSAT). This variability correlates with surface temperature in the boreal regions. Using TCCON measurements, we find that the slope of the relationship between the XCO2 seasonal cycle minima and boreal surface temperature is 1.2 ± 0.7 ppm K−1. Assimilations from CarbonTracker 2011 and CO2 simulations using the Simple Biosphere exchange Model (SiB) transported by GEOS-Chem underestimate this covariation. Both atmospheric transport and biospheric activity contribute to the observed covariation.

An Investigation on the Relationship Between Emission/Uptake of Greenhouse Gases and Environmental Factors in Serniarid Grassland

2003 ◽  
Vol 20 (1) ◽  
pp. 119-127 ◽  
Author(s):  
Yuesi Wang ◽  
Yuqiong Hu ◽  
Baoming Ji ◽  
Guangren Liu ◽  
Min Xue
Keyword(s):  
Environmental Factors ◽  
Greenhouse Gases ◽  
The Relationship

scholarly journals Relationship between pesticide use and climate change for crops

2007 ◽  
Vol 8 ◽  
pp. 83-91 ◽  
Author(s):  
Bhakta R. Palikhe
Keyword(s):  
Climate Change ◽  
Greenhouse Gases ◽  
Insect Pests ◽  
Agricultural Practices ◽  
Complex Problem ◽  
Pesticide Use ◽  
Pests And Diseases ◽  
Agriculture And Environment ◽  
Reduce Emissions ◽  
The Relationship

The use (and abuse) of pesticides has increased to combat insect-pests and diseases. However, the major causes concern of are the undesirable side effects of these chemicals on biodiversity, environment, food quality and human health .Climate change will have important implications for insect conservation and pest status. Climate and weather can substantially influence the development and distribution of insects. Most of the warming over the last 50 years is likely to have been due to man-made activities. Anthropogenically induced climatic change arising from increasing levels of atmospheric greenhouse gases would, therefore, be likely to have a significant effect on agricultural insect pests. Current best estimates of changes in climate indicate an increase in global mean annual temperatures of 1[o] C by 2025 and 3[o]C by the end of the next century. Such increases in temperature have a number of implications for temperature-dependent insect pests. The Assessment investigates the relationship between pesticide use and climate for crops that require relatively large amounts of pesticide. This paper describes such input-driven agriculture, the problem of pests and diseases and the unsustainable agricultural practices that it leads to, and the socio-economic and health externalities resulting in farmer's distress in pesticide hot spots. To protect ourselves, our economy, and our land from the adverse effects of climate change, we must ultimately dramatically reduce emissions of carbon dioxide and other greenhouse gases. The causes of anthropogenic climate change are broad and often difficult to address. There is no single solution to this complex problem, but numerous opportunities exist for reducing problems of climate change. The issue of climate change is one of the most profound challenges of our time, and we believe it is a challenge that can be met. The Journal of AGRICULTURE AND ENVIRONMENT Vol. 8, 2007, pp. 83-91

Interstellar gas in the central region of the Galaxy

1967 ◽  
Vol 31 ◽  
pp. 239-251 ◽  
Author(s):  
F. J. Kerr
Keyword(s):  
Central Region ◽  
Galactic Plane ◽  
Neutral Hydrogen ◽  
Continuum Emission ◽  
Galactic Centre ◽  
Interstellar Gas ◽  
Hydrogen Recombination ◽  
The Galaxy ◽  
Centre Region ◽  
The Relationship

A review is given of information on the galactic-centre region obtained from recent observations of the 21-cm line from neutral hydrogen, the 18-cm group of OH lines, a hydrogen recombination line at 6 cm wavelength, and the continuum emission from ionized hydrogen.Both inward and outward motions are important in this region, in addition to rotation. Several types of observation indicate the presence of material in features inclined to the galactic plane. The relationship between the H and OH concentrations is not yet clear, but a rough picture of the central region can be proposed.

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