Results 31 to 40 of about 149,411 (292)

Distributions, sources, and air-sea fluxes of nitrous oxide in Bohai Bay, China

Frontiers in Marine Science, 2023
IntroductionPolluted bays are one of the critical areas for the production and emissions of marine nitrous oxide (N2O), which has a strong effect on global warming and plays a critical role in stratospheric ozone depletion.MethodsIn 2020, the ...
Zhi Wang, Zhi Wang, Ting Gu, Ting Gu, Ting Gu, Yujian Wen, Yujian Wen, XuDong Cui, XuDong Cui, Dai Jia, Dai Jia, Jun Sun, Jun Sun, Jun Sun   +13 more
doaj   +1 more source

Nitrous Oxide Emissions from Smallholders’ Cropping Systems in Sub-Saharan Africa

Advances in Agriculture, 2021
Increased concentration of atmospheric nitrous oxide (N2O), a potent greenhouse gas (GHG), is of great concern due to its impact on ozone layer depletion leading to climate change. Ozone layer depletion allows penetration of ultraviolet radiations, which
Shaankua E. Lemarpe, Collins M. Musafiri, Joseph M. Macharia, Milka N. Kiboi, Onesmus K. Ng’etich, Chris A. Shisanya, Jeremiah Okeyo, Elizabeth A. Okwuosa, Felix K. Ngetich   +8 more
doaj   +1 more source

The Optimization of Hypobromite Oxidation Combined with Sodium Azide Chemical Methods and Determination of the Nitrogen Isotopic Composition of Dissolved Ammonium in Seawater

Journal of Isotopes
Ammonium is a key dissolved inorganic nitrogen (DIN) in the biogeochemical cycle of nitrogen in the ocean. Depending on the environment，the 15N natural abundance (δ15Nair ) of NH4+ can provide insights into N sources and mechanisms of N transformations ...
Haili YANG
doaj   +1 more source

Extreme emission of N2O from tropical wetland soil (Pantanal, South America)

Frontiers in Microbiology, 2013
Nitrous oxide (N2O) is an important greenhouse gas and ozone depleter, but the global budget of N2O remains unbalanced. Currently, ~25% of the global N2O emission is ascribed to uncultivated tropical soils, but the exact locations and controlling ...
Lars eLiengaard, Lars Peter eNielsen, Niels Peter eRevsbech, Anders ePriemé, Bo eElberling, Alex eEnrich-Prast, Michael eKühl, Michael eKühl, Michael eKühl   +8 more
doaj   +1 more source

Contribution of nitrification and denitrification to N2O emissions from urine patches [PDF]

, 2007
Urine deposition by grazing livestock causes an immediate increase in nitrous oxide (N2O) emissions, but the responsible mechanisms are not well understood. A nitrogen-15 (15N) labelling study was conducted in an organic grass-clover sward to examine the
Allen, Ambus, Ambus, Bateman, Bergsma, Bol, Clough, Clough, Conrad, Crutzen, Davidson, De Klein, De Klein, Firestone, Glatzel, Grundmann, Harada, Hutchinson, Kester, Koops, Kyveryga, Mathieu, Mette S. Carter, Monaghan, Monaghan, Mosier, Okereke, Panek, Petersen, Poth, Robertson, Ryden, Schmidt, Shand, Sherlock, Simek, Stevens, Stevens, Stevens, Sørensen, Thomas, Tiedje, Van Groenigen, Weier, Whitehead, Williams, Wrage, Wrage, Wrage, Yamulki, Yoshida   +50 more
core   +1 more source

Inland Waters can Act as Nitrous Oxide Sinks: Observation and Modeling Reveal that Nitrous Oxide Undersaturation May Partially Offset Emissions

Geophysical Research Letters, 2023
Inland waters are significant, yet highly uncertain, natural sources of nitrous oxide (N2O). Many emission models assume that N2O is only emitted from freshwaters, and that N2O sink behavior is negligible. However, observational studies have reported N2O
K. S. Aho, T. Maavara, K. M. Cawley, P. A. Raymond   +3 more
doaj   +1 more source

Marine N2O cycling from high spatial resolution concentration, stable isotopic and isotopomer measurements along a meridional transect in the eastern Pacific Ocean

Frontiers in Marine Science, 2023
Nitrous oxide (N2O) is a potent greenhouse gas and ozone depleting substance, with the ocean accounting for about one third of global emissions. In marine environments, a significant amount of N2O is produced by biological processes in Oxygen Deficient ...
Annie Bourbonnais, Bonnie X. Chang, Rolf E. Sonnerup, Scott C. Doney, Mark A. Altabet   +4 more
doaj   +1 more source

Nitrous oxide cycling in the Arabian Sea [PDF]

, 2001
Depth profiles of dissolved nitrous oxide (N2O) were measured in the central and western Arabian Sea during four cruises in May and July–August 1995 and May–July 1997 as part of the German contribution to the Arabian Sea Process Study of the Joint Global
Bange, Bange, Bouwman, Brandes, Butler, Butler, Codispoti, Codispoti, Cohen, Cohen, De Wilde, Dore, Elkins, Elkins, Farrenkopf, Froelich, Hashimoto, Hermann W. Bange, Ittekkot, Khalil, Kim, Lal, Law, Lee, Mantoura, McAllister, Meinrat O. Andreae, Morrison, Naqvi, Naqvi, Naqvi, Naqvi, Naqvi, Naqvi, Naqvi, Nevison, Olson, Oudot, Patra, Pierotti, Prather, Rao, Rhein, Rönner, Schott, Shenoi, Siedler, Spyridon Rapsomanikis, Stumm, Upstill-Goddard, Weiss, Weiss, Yoshida, Yoshinari, You   +54 more
core   +1 more source

Nitrous oxide consumption potentials of well-drained forest soils in Southern Québec, Canada. [PDF]

, 2010
To establish the major controls on N2O consumption by forest soils, we conducted laboratory incubations of 16 samples from four soil types, two organic and two mineral, varying in overlying forest vegetation (sugar maple, American beech and eastern ...
Frasier, Rebeccah, Moore, Tim R., Ullah, Sami   +2 more
core   +1 more source

Negative ion photoelectron spectroscopy of N2O− and (N2O)−2

Chemical Physics Letters, 1986
Abstract We have recorded the photoelectron spectra of the gas phase negative ions N 2 O − and (N 2 O) 2 − both of which were prepared in a nozzle ion source. The shift between the maxima of the two spectra is interpreted in terms of the dissociation energy of the dimer ion.
J.V. Coe, J.T. Snodgrass, C.B. Freidhoff, K.M. McHugh, K.H. Bowen   +4 more
openaire   +1 more source