Results 111 to 120 of about 4,244 (217)

Emissions of Perfluorinated Greenhouse Gases in Southeastern China Derived From High‐Frequency In Situ Observations

Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.
Abstract Sulfur hexafluoride (SF6 ${\text{SF}}_{6}$), nitrogen trifluoride (NF3 ${\text{NF}}_{3}$), and three perfluorocarbons (PFCs; CF4 ${\text{CF}}_{4}$, C2F6 ${\mathrm{C}}_{2}{\mathrm{F}}_{6}$, and c $c$‐C4F8 ${\mathrm{C}}_{4}{\mathrm{F}}_{8}$) are perfluorinated greenhouse gases (PF‐GHGs) with long atmospheric lifetimes and high global warming ...
Yuyang Chen, Bo Yao, Minde An, Ao Ding, Song Liu, Xicheng Li, Yali Li, Simon O’Doherty, Paul B. Krummel, Honglong Yang, Haibo Yu, Liqu Chen, Xin Yang, Tzung‐May Fu, Huizhong Shen, Jianhuai Ye, Chen Wang, Lei Zhu   +17 more
wiley   +1 more source

Estimates of Cl atom concentrations and hydrocarbon kinetic reactivity in surface air at Appledore Island, Maine (USA), during International Consortium for Atmospheric Research on Transport and Transformation/Chemistry of Halogens at the Isles of Shoals [PDF]

, 2007
Average hydroxyl radical (OH) to chlorine atom (Cl·) ratios ranging from 45 to 119 were determined from variability‐lifetime relationships for selected nonmethane hydrocarbons (NMHC) in surface air from six different transport sectors arriving at ...
Fischer, Emily V., Pszenny, Alexander A. P., Russo, Rachel S., Sive, Barkley C., Varner, Ruth K.   +4 more
core   +1 more source

Observing Lower‐Tropospheric Ozone Spatiotemporal Variability With Airborne Lidar and Surface Monitors in Houston, Texas

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 6, 28 March 2025.
Abstract Surface‐level ozone is a trace gas regulated by the Environmental Protection Agency as its oxidizing properties are detrimental to air quality, impacting human and environmental health. Satellite observations provide spatially continuous intraurban ozone distributions, potentially filling in gaps within monitoring networks.
Mary Angelique G. Demetillo, Laura M. Judd, Katherine R. Travis, James H. Crawford, Prajjwal Rawat, Johnathan W. Hair, Marta Fenn, Richard Ferrare, Taylor Shingler, John T. Sullivan, Paul Walter, James Flynn, Travis Griggs   +12 more
wiley   +1 more source

A case of transatlantic aerosol transport detected at the Schneefernerhaus Observatory (2650 m) on the northern edge of the Alps

Meteorologische Zeitschrift, 2010
An unusual peak in atmospheric aerosol particle number and mass concentration occurred on September 20 and 21, 2006 at the Schneefernerhaus (SFH) Observatory, Germany.
Wolfram Birmili, Tina Göbel, André Sonntag, Ludwig Ries, Ralf Sohmer, Stefan Gilge, Ingeborg Levin, Andreas Stohl   +7 more
doaj   +1 more source

Greenhouse Gas Budgets of Central and West Asia (2000–2020): A Significant Net Source to the Atmosphere

Global Biogeochemical Cycles, Volume 39, Issue 3, March 2025.
Abstract This study provides the first comprehensive quantification of three major greenhouse gases (GHGs, including CO2, CH4, and N2O) budgets for Central and West Asia (CWA) from 2000 to 2020, including contributions from fossil fuels, industry, and managed and unmanaged terrestrial ecosystems.
Xiaoyu Qin, Hanqin Tian, Josep G. Canadell, Yu Shi, Shufen Pan, Ana Bastos, Philippe Ciais, Monica Crippa, Naiqing Pan, Prabir K. Patra, Benjamin Poulter, Marielle Saunois, Stephen Sitch   +12 more
wiley   +1 more source

Numerical Simulation Study of Winter Pollutant Transport Characteristics over Lanzhou City, Northwest China

Atmosphere, 2018
Air pollution levels are severe in Lanzhou due to the valley topography and the semi-arid climate. A comprehensive understanding of pollutant transport characteristics, which are affected by atmospheric circulation, can help explain the reason for the ...
Jianjun He, Shuhua Lu, Ye Yu, Sunling Gong, Suping Zhao, Chunhong Zhou   +5 more
doaj   +1 more source

Source–Receptor Relationships and Cluster Analysis of CO₂, CH₄, and CO Concentrations in West Africa: The Case of Lamto in Côte d’Ivoire

Atmosphere, 2020
The contribution in terms of long-range transport of CO2, CH4, and CO concentrations to measurements at Lamto (5°02′ W–6°13′ N) was analyzed for the 2014–2017 period using the FLEXPART model that calculates the retro-plumes of air masses arriving at the ...
Dro Touré Tiemoko, Fidèle Yoroba, Jean-Daniel Paris, Adama Diawara, Antoine Berchet, Isabelle Pison, Aurélie Riandet, Michel Ramonet   +7 more
doaj   +1 more source

In-situ observation of Asian pollution transported into the Arctic lowermost stratosphere [PDF]

, 2011
On a research flight on 10 July 2008, the German research aircraft Falcon sampled an air mass with unusually high carbon monoxide (CO), peroxyacetyl nitrate (PAN) and water vapour (H₂O) mixing ratios in the Arctic lowermost ...
A. Roiger, A. Schäfler, A. Stohl, C. Schiller, F. Arnold, H. Aufmhoff, H. Huntrieser, H. Schlager, H. Sodemann, J. Burkhart, K. S. Law, M. Lazzara, M. Scheibe, O. R. Cooper   +13 more
core   +5 more sources

Do Microplastics Contribute to the Total Number Concentration of Ice Nucleating Particles?

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 2, 28 January 2025.
Abstract Microplastics (MPs) can be transported into clouds, where they may act as ice nucleating particles (INPs). However, MPs have not been considered as contributors to INP concentrations. Here, we quantify road traffic‐related MP number concentrations, and estimate their contribution to total INP concentrations using the atmospheric transport ...
Daria Tatsii, Blaž Gasparini, Ioanna Evangelou, Silvia Bucci, Andreas Stohl   +4 more
wiley   +1 more source

Constraints on oceanic methane emissions west of Svalbard from atmospheric in situ measurements and Lagrangian transport modeling [PDF]

, 2016
Methane stored in seabed reservoirs such as methane hydrates can reach the atmosphere in the form of bubbles or dissolved in water. Hydrates could destabilize with rising temperature further increasing greenhouse gas emissions in a warming climate.
Allen, G, Bauguitte, S, Bower, KN, Cain, M, Eckhardt, S, Gallagher, MW, Hermansen, O, Mienert, J, Myhre, CL, O'Shea, S, Percival, CJ, Pisso, I, Pitt, J, Platt, SM, Pyle, J, Schmidbauer, N, Stohl, A, Vadakkepuliyambatta, S   +17 more
core   +4 more sources