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Differentiation Between Nitrate Aerosol Formation Pathways in a Southeast Chinese City by Dual Isotope and Modeling Studies 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Xiao, Hong-Wei;  Zhu, Ren-Guo;  Pan, Yuan-Yuan;  Guo, Wei;  Zheng, Neng-Jian;  Liu, Yong-Hui;  Liu, Cheng;  Zhang, Zhong-Yi;  Wu, Jing-Feng;  Kang, Chang-An;  Luo, Li;  Xiao, Hua-Yun
收藏  |  浏览/下载：19/0  |  提交时间：2020/08/18
Microphysical Properties of Generating Cells Over the Southern Ocean: Results From SOCRATES 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Wang, Yang;  McFarquhar, Greg M.;  Rauber, Robert M.;  Zhao, Chuanfeng;  Wu, Wei;  Finlon, Joseph A.;  Stechman, Daniel M.;  Stith, Jeffery;  Jensen, Jorgen B.;  Schnaiter, Martin;  Jarvinen, Emma;  Waitz, Fritz;  Vivekanandan, Jothiram;  Dixon, Michael;  Rainwater, Bryan;  Toohey, Darin W.
收藏  |  浏览/下载：33/0  |  提交时间：2020/08/18
generating cells  microphysical properties  Southern Ocean  
Slower nutrient stream suppresses Subarctic Atlantic Ocean biological productivity in global warming 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (27) : 15504-15510
作者:  Whitt, Daniel B.;  Jansen, Malte F.
收藏  |  浏览/下载：205/0  |  提交时间：2020/06/29
ocean circulation  biogeochemistry  global warming  
The Nd-142/Nd-144 variations in mantle-derived rocks provide constraints on the stirring rate of the mantle from the Hadean to the present 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (26) : 14738-14744
作者:  Hyung, Eugenia;  Jacobsen, Stein B.
收藏  |  浏览/下载：6/0  |  提交时间：2020/06/22
Ice Breakup Controls Dissipation of Wind Waves Across Southern Ocean Sea Ice 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Ardhuin, Fabrice;  Otero, Mark;  Merrifield, Sophia;  Grouazel, Antoine;  Terrill, Eric
收藏  |  浏览/下载：7/0  |  提交时间：2020/06/16
sea ice  ocean waves  SAR  
Subpolar marginal seas fuel the North Pacific through the intermediate water at the termination of the ocean circulation 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (23) : 12665-12673
作者:  Nishioka, Jun;  Obata, Hajime;  Ogawa, Hiroshi;  Ono, Kazuya;  Yamashita, Youhei;  Lee, Keunjong;  Takeda, Shigenobu;  Yasuda, Ichiro
收藏  |  浏览/下载：11/0  |  提交时间：2020/06/01
dissolved iron  macronutrients  North Pacific Ocean  island chains mixing  GEOTRACES  
Global reconstruction reduces the uncertainty of oceanic nitrous oxide emissions and reveals a vigorous seasonal cycle 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (22) : 11954-11960
作者:  Yang, Simon;  Chang, Bonnie X.;  Warner, Mark J.;  Weber, Thomas S.;  Bourbonnais, Annie M.;  Santoro, Alyson E.;  Kock, Annette;  Sonnerup, Rolf E.;  Bullister, John L.;  Wilson, Samuel T.;  Bianchi, Daniele
收藏  |  浏览/下载：13/0  |  提交时间：2020/05/20
nitrous oxide  air-sea gas exchange  seasonal variability  nitrogen cycle  greenhouse gases  
Relaxation of Wind Stress Drives the Abrupt Onset of Biological Carbon Uptake in the Kerguelen Bloom: A Multisensor Approach 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (9)
作者:  Pellichero, Violaine;  Boutin, Jacqueline;  Claustre, Herve;  Merlivat, Liliane;  Sallee, Jean-baptiste;  Blain, Stephane
收藏  |  浏览/下载：6/0  |  提交时间：2020/07/02
onset of the phytoplankton bloom  mixing-layer depth  in situ high-resolution data  mixed-layer depth  air-sea heat flux  wind stress  
Hydrothermal (NN)-N-15-N-15 abundances constrain the origins of mantle nitrogen 期刊论文
NATURE, 2020, 580 (7803) : 367-+
作者:  Zhao, Steven;  Jang, Cholsoon;  Liu, Joyce;  Uehara, Kahealani;  Gilbert, Michael;  Izzo, Luke;  Zeng, Xianfeng;  Trefely, Sophie;  Fernandez, Sully;  Carrer, Alessandro;  Miller, Katelyn D.;  Schug, Zachary T.;  Snyder, Nathaniel W.;  Gade, Terence P.;  Titchenell, Paul M.;  Rabinowitz, Joshua D.;  Wellen, Kathryn E.
收藏  |  浏览/下载：15/0  |  提交时间：2020/05/13

Nitrogen is the main constituent of the Earth'  s atmosphere, but its provenance in the Earth'  s mantle remains uncertain. The relative contribution of primordial nitrogen inherited during the Earth'  s accretion versus that subducted from the Earth'  s surface is unclear(1-6). Here we show that the mantle may have retained remnants of such primordial nitrogen. We use the rare (NN)-N-15-N-15 isotopologue of N-2 as a new tracer of air contamination in volcanic gas effusions. By constraining air contamination in gases from Iceland, Eifel (Germany) and Yellowstone (USA), we derive estimates of mantle delta N-15 (the fractional difference in N-15/N-14 from air), N-2/Ar-36 and N-2/He-3. Our results show that negative delta N-15 values observed in gases, previously regarded as indicating a mantle origin for nitrogen(7-10), in fact represent dominantly air-derived N-2 that experienced N-15/N-14 fractionation in hydrothermal systems. Using two-component mixing models to correct for this effect, the (NN)-N-15-N-15 data allow extrapolations that characterize mantle endmember delta N-15, N-2/Ar-36 and N-2/He-3 values. We show that the Eifel region has slightly increased delta N-15 and N-2/Ar-36 values relative to estimates for the convective mantle provided by mid-ocean-ridge basalts(11), consistent with subducted nitrogen being added to the mantle source. In contrast, we find that whereas the Yellowstone plume has delta N-15 values substantially greater than that of the convective mantle, resembling surface components(12-15), its N-2/Ar-36 and N-2/He-3 ratios are indistinguishable from those of the convective mantle. This observation raises the possibility that the plume hosts a primordial component. We provide a test of the subduction hypothesis with a two-box model, describing the evolution of mantle and surface nitrogen through geological time. We show that the effect of subduction on the deep nitrogen cycle may be less important than has been suggested by previous investigations. We propose instead that high mid-ocean-ridge basalt and plume delta N-15 values may both be dominantly primordial features.


  
Submesoscale Fronts in the Antarctic Marginal Ice Zone and Their Response to Wind Forcing 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (6)
作者:  Swart, Sebastiaan;  du Plessis, Marcel D.;  Thompson, Andrew F.;  Biddle, Louise C.;  Giddy, Isabelle;  Linders, Torsten;  Mohrmann, Martin;  Nicholson, Sarah-Anne
收藏  |  浏览/下载：10/0  |  提交时间：2020/07/02
submesoscales  mixed-layer  sea-ice  Southern Ocean  air-sea fluxes  gliders