新着論文紹介(2014.12.16) AGU
◉Climate
of the Past
1. Climate
history of the Southern Hemisphere Westerlies(SHW) belt during the last
glacial–interglacial transition revealed from lake water oxygen isotope
reconstruction of Laguna Potrok Aike (52° S, Argentina)
J. Zhu, A. Lücke, H. Wissel, C. Mayr, D. Enters,
K. Ja Kim, C. Ohlendorf, F. Schäbitz, and
B. Zolitschka
doi:10.5194/cp-10-2153-2014
The authors show
an oxygen isotope (δ18O) record from Laguna Potrok Aike, a deep maar lake located in semi-arid,
extra-Andean Patagonia, covering the last glacial–interglacial transition (26
000 to 8500 cal BP). During the last deglaciation, reconstructed δ18O values
reveal a significant two-step rise. Their interpretation provides a new view to
the patterns of changes in the SHW throughout the last glacial–interglacial
transition.
2. Enhanced
20th-century heat transfer to the Arctic simulated in the context of climate
variations over the last millennium
J. H. Jungclaus, K. Lohmann, and D. Zanchettin
doi:10.5194/cp-10-2201-2014
◉Global
Biogeochemical Cycles
3. Variability
in efficiency of particulate organic carbon export: A model study
Stephanie A.
Henson, Andrew Yool and Richard Sanders
DOI: 10.1002/2014GB004965
· Seasonal and spatial variability in
export ratio are quantified
· Empirical algorithms for e-ratio may
be overly simple
· Assuming e-ratio is seasonally
invariant results in large errors in export
4. Predicting
the long-term fate of buried organic carbon in colluvial soils
Zhengang Wang,
Kristof Van Oost and Gerard Govers
DOI: 10.1002/2014GB004912
◉Geophysical
Reserch Letter
5. A mechanism for lack of sea ice reversibility in
the Southern Ocean
Jeff K. Ridley and
Helen
T. Hewitt
DOI: 10.1002/2014GL062167
6. Seasonal variability of the warm Atlantic water
layer in the vicinity of the Greenland shelf break
Jeremy P. Grist,
Simon A. Josey, Lars Boehme, Michael P. Meredith, Kristin L. Laidre, Mads Peter
Heide-Jørgensen, Kit M. Kovacs, Christian Lydersen, Fraser J. M. Davidson,
Garry B. Stenson, Mike O. Hammill, Robert Marsh, Andrew C. Coward
DOI: 10.1002/2014GL062051
7. Inter-annual and decadal fluctuations of the
Kuroshio in East China Sea and connection with surface fluxes of momentum and
heat
Jia Wang, Lie-Yauw
Oey
DOI:
10.1002/2014GL062118
8. Quantifying flow regimes in a Greenland glacial
fjord using iceberg drifters
David A.
Sutherland, George E. Roth, Gordon S. Hamilton, Sebastian H. Mernild, Leigh A.
Stearns, Fiammetta Straneo
DOI:
10.1002/2014GL062256
9. Deuterium excess in subtropical free troposphere
water vapor: Continuous measurements from the Chajnantor Plateau, northern
Chile
Kimberly E.
Samuels-Crow, Joseph Galewsky, Zachary D. Sharp, Kate J. Dennis
DOI:
10.1002/2014GL062302
Water vapor
measured continuously by cavity ring-down spectroscopy from July 2012 to March
2013 on the hyperarid Chajnantor Plateau, northern Chile, has a mean deuterium
excess (d-excess = δD − 8*δ18O) of 46‰ ± 5‰ and frequently exceeds 100‰ at low water vapor
mixing ratios (q ≤ 500 ppmv). These measurements provide empirical
support for theoretical predictions of free troposphere d-excess.
◉Paleoceanogralhy
10. The changing roles of iron and vertical mixing in
regulating nitrogen and silicon cycling in the Southern Ocean over the last
glacial cycle
Rebecca S.
Robinson, Mark A. Brzezinski, Charlotte P. Beucher, Matthew G. S. Horn, Patrick
Bedsole
DOI:
10.1002/2014PA002686
11. Deep water exchanges between the South China Sea
and the Pacific since the last glacial period
Sui Wan, Zhimin
Jian
DOI:
10.1002/2013PA002578
12. The middle Eocene climatic optimum (MECO): A
multiproxy record of paleoceanographic changes in the southeast Atlantic (ODP
Site 1263, Walvis Ridge)
F. Boscolo
Galazzo, E. Thomas, M. Pagani, C. Warren, V. Luciani, L. Giusberti
DOI:
10.1002/2014PA002670
◉Geochemistry,
Geophysics, Geosystems
◉Journal
of Geophysical Research: Oceans
◉Journal
of Geophysical Research: Atmospheres
◉Radiocarbon
