☆AGU☆
★G3★
Determination of B/Ca of natural carbonates by
HR-ICP-MS
Sambuddha
Misra, Mervyn Greaves, Robert Owen, Joanna Kerr, Aurora C Elmore, Henry
Elderfield
DOI: 10.1002/2013GC005049
B/Ca and Me/Ca determination from < 5 µg CaCO3
External precision < 4.0% (2σ) on B/Ca
Analysis of Me/Ca from single foraminifera shell
Model evaluation of the coherence of a common
source water oxygen isotopic signal recorded by tree-ring cellulose and
speleothem calcite
S. R.
Managave
DOI: 10.1002/2013GC004983
Oxygen isotopic composition variation of rain affects
correlation between oxygen isotopic composition records of two proxies
Relative humidity affects the correlation between oxygen
isotopic composition records of two proxies
Subannual tree-ring oxygen isotopic composition analysis
might be better for integrating two proxies
Calcite saturation, foraminiferal test mass, and
Mg/Ca-based temperatures dissolution corrected using XDX: A 150 ka record from
the western Indian Ocean
Heather
J.H. Johnstone, Thorsten Kiefer, Henry Elderfield, Michael Schulz
DOI: 10.1002/2013GC004994
Foraminifer dissolution index XDX gives deepwater calcite
saturation
XDX used to correct dissolution bias in Mg/Ca and shell
mass records
Corrected records for the core (WIND28K) are compared to
published data
★GRL★
Swiss tree-rings
reveal warm and wet summers during medieval times
Anne
Kress, Sarah Hangartner, Harald Bugmann, Ulf Büntgen, David C. Frank, Markus
Leuenberger, Rolf T.W. Siegwolf, Matthias Saurer
DOI: 10.1002/2013GL059081
A 1200‐year
drought reconstruction for the Swiss Alps was established
The tree‐ring carbon
isotope ratios at the site are highly moisture‐sensitive
The data fill a gap in our knowledge about medieval
hydroclimate
What is Responsible for the Strong Observed
Asymmetry in Teleconnections Between El Niño and La Niña?
Tao
Zhang, Judith Perlwitz, Martin P. Hoerling
DOI: 10.1002/2013GL058964
Asymmetry is a fundamental property of atmospheric
responses to recent ENSO
Strong observed asymmetry in ENSO teleconnections is from
sampling variability
True ENSO symmetric component is likely greater than
asymmetric component
Inter-model Spread
of East Asian Summer Monsoon Simulations in CMIP5
Jinqiang
Chen, Simona Bordoni
DOI: 10.1002/2013GL058981
High correlations exist between
monsoon precipitation and stationary eddies
★JGR Oceans★
Distinct modes of East Asian Winter Monsoon
documented by a southern Red Sea coral record
Monica
Ionita, Thomas Felis, Gerrit Lohmann, Norel Rimbu, Jürgen Pätzold
DOI: 10.1002/2013JC009203
The coral documents information on ENSO-like variability
and stationarity
Abrupt shift in the relationship of the coral with ENSO
Strong influence of EAWM and Siberian High after 1960s
★Paleoceanography★
★GBC★
特になし
☆EGU☆
★Climate of the Past★
Biogeochemical
variability during the past 3.6 million years recorded by FTIR spectroscopy in
the sediment record of Lake El'gygytgyn, Far East Russian Arctic
C. Meyer-Jacob,
H. Vogel, A. C. Gebhardt, V. Wennrich, M. Melles, and
P. Rosén
doi:10.5194/cp-10-209-2014
Developed calibration models based on Fourier
transform infrared spectroscopy (FTIRS) for the quantitative determination of
biogenic silica (BSi), total organic carbon (TOC), and total inorganic carbon
(TIC) in a 318 m-long sediment record with a basal age of 3.6 million years from
Lake El'gygytgyn, Far East Russian Arctic.
High accumulation rates of BSi indicate a
productivity maximum during the middle Pliocene (3.6–3.3 Ma), followed by
gradually decreasing rates during the late Pliocene and Quaternary. The average
BSi accumulation during the middle Pliocene was ~3 times higher than maximum
accumulation rates during the past 1.5 million years. The indicated progressive
deterioration of environmental and climatic conditions in the Siberian Arctic
starting at ca. 3.3 Ma is consistent with the first occurrence of glacial
periods and the finally complete establishment of glacial–interglacial cycles
during the Quaternary.
