Results 151 to 160 of about 26,538 (206)

CO₂ and N₂O Emissions From Vehicles in Seoul Megacity, South Korea: Insights From Mixing Ratio and Stable Isotope Ratios. [PDF]

Rapid Commun Mass Spectrom
Kim J, Ahn J, Ghosh S, Toyoda S, Morimoto S, Choi H, Jung J, Lee H.   +7 more
europepmc   +1 more source

Net Carbon Transfer From Ocean to Land During the Last Deglaciation Synchronous With Sea Level Rise and Lagging Atmospheric CO2 by Several Millennia

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The sequence of events in the global carbon cycle during deglaciations is not entirely understood. Here, we analyze mean ocean δ13 ${\delta }^{13}$C and δ18 ${\delta }^{18}$O in an updated compilation of foraminiferal stable isotope data comprising 902 time series from 381 sediment cores, with individual records covering intervals within the ...
Peter Köhler, Stefan Mulitza
wiley   +1 more source

Reaffirming the Consistency of the Original Stock of NBS 19 Limestone and Its Byproduct With Finer Grain Size for δ¹³C and δ¹⁸O Calibrations-Both Distributed Internationally. [PDF]

Rapid Commun Mass Spectrom
Qi H, Coplen TB, Reid LT, Mroczkowski SJ.   +3 more
europepmc   +1 more source

Hydropeaking Catalyzes Redox Reactions in Impacted Aquifers: A First Field Evidence

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Hydropeaking indicates the sudden and frequent fluctuation of river stage caused by the operation of hydropower plants. This river alteration affects numerous physical, chemical, biological, and ecohydrological processes in surface water bodies.
Gabriele Chiogna, Francesca Ziliotto, Mónica Basilio Hazas, Carla Feistner, Klara Hoebenreich, Mohammad Alqadi, Anushruti Kukreja, Beatrice Richieri, Catalina Zapata Barra, Giulio Dolcetti, Johannes A. C. Barth   +10 more
wiley   +1 more source

Establishment of a Purge and Trap Continuous-Flow Isotope Ratio Mass Spectrometer System for Analysis of Stable Nitrate Isotopes (δ¹⁵N and δ¹⁸O) in Water Samples by Ti(III) Reduction. [PDF]

Rapid Commun Mass Spectrom
Gcakasi MN, Stumpp C, Watzinger A.
europepmc   +1 more source

Millennial‐Scale Deoxygenation in the Southern California Oxygen Minimum Zone Over the Last Glacial Cycle

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Past variability of oxygen minimum zones (OMZs) provides key insights into future ocean deoxygenation. However, California margin OMZ records remain temporally limited, restricting evaluation of mechanisms across full glacial–interglacial cycles.
Fang Qian, Yi Wang, Kassandra M. Costa, Ingrid L. Hendy, Sune G. Nielsen   +4 more
wiley   +1 more source

Differentiation of Cotton Fabrics Using Stable Isotope Ratio Mass Spectrometry. [PDF]

J Am Soc Mass Spectrom
Eckmann JD, Beussman DJ.
europepmc   +1 more source

Through the Cracks: Sea Ice Regions as a Source of Volatile Marine Sulfur in the Springtime Arctic

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Marine volatile methylated sulfur compounds (VMS) including dimethyl sulfide (DMS) and methanethiol (MeSH), are important natural sources of sulfur to the atmosphere and precursors to aerosols and cloud condensation nuclei. However, observations of DMS and MeSH in regions with sea ice remain limited.
Nicole A. June, Cort L. Zang, Samuel E. O’Donnell, Ben G. Kopec, Anderson Da Silva, Betty Croft, Rachel Y.‐W. Chang, Linia Tashmim, Antoine Haddon, Shengqian Zhou, William C. Porter, Jeffrey M. Welker, Shantanu H. Jathar, Nadja Steiner, Michael Tjernström, Paul Zieger, Megan D. Willis, Jeffrey R. Pierce   +17 more
wiley   +1 more source

High‐Resolution Temperature and Precipitation Variability in Northeast Asia Since the Last Glacial Maximum Recorded in an Annually Laminated Maar Lake

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Temperature and precipitation variability in monsoonal Asia is central to understanding regional climate dynamics and global teleconnections. How post‐LGM warming and hydroclimate change unfolded in Northeast Asia, and how they were linked to external forcing, remain poorly constrained.
Deke Xu, Jiatong Lu, Guoqiang Chu, Caiming Shen, Ning Tan, Anning Cui, Hao Li, Baoshuo Fan, Bing Song, Xiudong Yang, Kangyou Huang, Yun Zhang, Yuecong Li, Sangheon Yi, Jungjae Park, Zhuo Zheng, Qinghai Xu, Jie Liu, Chang Li, Houyuan Lu   +19 more
wiley   +1 more source

Sources, Transformation, and Fate of Groundwater Nitrate Under Intensive Anthropogenic Pressures in the Lower Yellow River Basin: Insights From Hydrochemistry and Multi-Isotope Analysis. [PDF]

Water Environ Res
Yan S, Zhang T, Yan Z, Wang S, Cheng X, Zhang Y, Su H.   +6 more
europepmc   +1 more source