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Role of Reemergence in the Central North Pacific Revealed by a Mixed Layer Heat Budget Analysis 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Murata, Kazumichi;  Kido, Shoichiro;  Tozuka, Tomoki
收藏  |  浏览/下载：8/0  |  提交时间：2020/06/16
reemergence  mixed layer heat budget analysis  Regional Ocean Model  North Pacific  sea surface temperature  
Constraining an Ocean Model Under Getz Ice Shelf, Antarctica, Using A Gravity-Derived Bathymetry 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Millan, Romain;  St-Laurent, Pierre;  Rignot, Eric;  Morlighem, Mathieu;  Mouginot, Jeremie;  Scheuchl, Bernd
收藏  |  浏览/下载：7/0  |  提交时间：2020/06/01
glaciology  bathymetry  melt rates  ocean model  grounding line  getz ice shelf  
Antarctic Sea Ice Area in CMIP6 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (9)
作者:  Roach, Lettie A.;  39;Farrell, Siobhan P.
收藏  |  浏览/下载：9/0  |  提交时间：2020/07/02
sea ice  CMIP6  Antarctica  climate models  Southern Ocean  model evaluation  
Influence of polluted dust on chlorophyll-a concentration and particulate organic carbon in the subarctic North Pacific Ocean based on satellite observation and the WRF-Chem simulation 期刊论文
ATMOSPHERIC RESEARCH, 2020, 236
作者:  Luo, Chenghan;  Wang, Wencai;  Sheng, Lifang;  Zhou, Yang;  Hu, Zhiyuan;  Qu, Wenjun;  Li, Xiaodong;  Hai, Shangfei
收藏  |  浏览/下载：21/0  |  提交时间：2020/07/02
Dust aerosol  Chlorophyll-a concentration  Particulate organic carbon  North Pacific Ocean  WRF-Chem model  
Internal Variability Dominates Over Externally Forced Ocean Circulation Changes Seen Through CFCs 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (9)
作者:  Lester, J. G.;  Lovenduski, N. S.;  Graven, H. D.;  Long, M. C.;  Lindsay, K.
收藏  |  浏览/下载：10/0  |  提交时间：2020/05/13
internal variability  Southern Ocean  model ensemble  Circumpolar Deep Water  Subantarctic Mode Water  CFC12  
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：14/0  |  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.


  
Sensitivity of Marine Heatwave Metrics to Ocean Model Resolution 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Pilo, Gabriela S.;  Holbrook, Neil J.;  Kiss, Andrew E.;  Hogg, Andrew McC.
收藏  |  浏览/下载：9/0  |  提交时间：2020/02/17
marine heatwave  global ocean-sea ice model  model resolution  temperature extremes  
Predicting the Atlantic Multidecadal Variability from Initialized Simulations 期刊论文
JOURNAL OF CLIMATE, 2019, 32 (24) : 8701-8711
作者:  Si, Dong;  Hu, Aixue;  Wang, Huijun;  Chao, Qingchen
收藏  |  浏览/下载：5/0  |  提交时间：2020/02/17
North Atlantic Ocean  Climate prediction  Model initialization  Climate variability  Multidecadal variability  
Simulation of mid-latitude winter storms over the North Atlantic Ocean: impact of boundary layer parameterization schemes 期刊论文
CLIMATE DYNAMICS, 2019, 53 (11) : 6785-6814
作者:  Pradhan, P. K.;  Liberato, Margarida L. R.;  Kumar, Vinay;  Rao, S. Vijaya Bhaskara;  Ferreira, Juan;  Sinha, Tushar
收藏  |  浏览/下载：6/0  |  提交时间：2020/02/17
Mid-latitude storms  Explosive cyclogenesis  Mature stage  Mesoscale model WRF  Planetary boundary layer scheme  North Atlantic Ocean  
Aliasing of the Indian Ocean externally-forced warming spatial pattern by internal climate variability 期刊论文
CLIMATE DYNAMICS, 2019
作者:  Gopika, S.;  Izumo, Takeshi;  Vialard, Jerome;  Lengaigne, Matthieu;  Suresh, Iyyappan;  Kumar, M. R. Ramesh
收藏  |  浏览/下载：12/0  |  提交时间：2020/02/17
Indian Ocean  Anthropogenic climate change  Natural climate variability  Sea surface temperature (SST)  Coupled model intercomparison project (CMIP)  Spatial pattern of Indian Ocean SST change