[Chemical Geology]
1. Evidence for seawater Mg/Ca and dietary control on Mg incorporation in oyster shells
Marie Pesnin, Laurent Emmanuel, Amélie Guittet, Boris Eyheraguidel, Gaetan Schires ,Julien Normand, Vincent Mouchi
東京大学大気海洋研究所 横山祐典研究室
Atmosphere and Ocean Research Institute, the University of Tokyo
[Chemical Geology]
1. Evidence for seawater Mg/Ca and dietary control on Mg incorporation in oyster shells
Marie Pesnin, Laurent Emmanuel, Amélie Guittet, Boris Eyheraguidel, Gaetan Schires ,Julien Normand, Vincent Mouchi
1. Space-based observation of global increase in urban methane emissions from 2019–2023
E. Whiting,G. Plant,E.A. Kort,I. Aben,K.J. Biener,G. Leguijt, & J.D. Maasakkers
2. Paleohydraulics of cyclonic storm deposits suggest that the equatorial climate of Earth in the Pennsylvanian was not cold
Paul M. Myrow, Mingxi Hu, Michael P. Lamb
3. Organic pollution found oceanwide
Aron Stubbins
4. A new paradigm for understanding Earth’s marine ice sheets
Olga Sergienko, Marianne Haseloff, Alexander Robel & Duncan Wingham
5. Deep ocean control of global temperature after net-zero emissions
Yong-Han Lee, Sang-Wook Yeh, Guojian Wang, Se-Yong Song & Soon-Il An
6. Climate futures require politics
Julia Leininger, Halvard Buhaug, Elisabeth Gilmore, Staffan I. Lindberg, Marina Andrijevic & Elina Brutschin
7. ENSO shapes salinity regimes and fish migration in the China Seas
Zhixuan Wang, Han Huang, Guizhi Wang, Tangdong Qu, Yue Liu, Xianghui Guo, Shiyun Lei, Jianyu Hu, Jingfang Fan, Jianping Gan, Ling Cao, Xiaosong Chen & Minhan Dai
AGU 4/14-4/20
Geochemistry, Geophysics, Geosystems
Late Eocene to Early Oligocene (36–26 Ma) Rock Magnetism and Magnetostratigraphy of IODP Site U1553, Southwestern Pacific: Defying the Challenges of Carbonate Dilution and Reductive Diagenesis
Yang Zhang, Wanzhang Wang, Tilo von Dobeneck, Anna Joy Drury, Thomas Frederichs, Wei Yuan
Geophysical Research Letters
Submesoscale Energy Cycle in a Coupled Ocean-Atmosphere Simulation of the Gulf Stream
Marcela Contreras, Patrick Marchesiello, Lionel Renault
High-Resolution Observations Unveil (Sub)Mesoscale Heat Fluxes Shaping Upper-Ocean Heat Content
Mathieu Gentil, Charly de Marez, Enric Pallàs-Sanz, Anthony Bosse, Miguel Tenreiro, Rémi Laxenaire
Quantifying Under-Ice Phytoplankton Blooms in the Changing Arctic and Southern Oceans
Courtney M. Payne, Alice K. DuVivier, Kristen M. Krumhardt, Nicole S. Lovenduski, Marika M. Holland
Pacific Decadal Oscillation Modulates an Interdecadal Trans-Pacific Dry-Wet Seesaw in East Asian and North American Semi-Arid Regions
Shanshan Wang, Xinya Shu, Jianping Huang, Jinfei Sun, Fuxing Shi
Air Quality Penalty in Southeast Asia Driven by AMOC Slowdown
Ryan Vella, Benedikt Steil, Virna Meccia, Holger Tost, Jos Lelieveld, Andrea Pozzer
JGR Oceans
Pre- to Post-Monsoon Shifts in Cyclone-Driven Sea Surface Temperature, Salinity, and Chlorophyll-a Responses in the Arabian Sea
Arwa Najah Abdulmawjood, Guoqiang Liu, Xiaoxiong Zhang, Fahim Abdul Gafoor, Maryam R. Al Shehhi
Paleoceanography, Paleoclimatology
Unsteady Gypsum Cycling as a Driver of Cryptic Perturbations in the Ancient Carbon Cycle
Kalev Hantsoo, Kimberly V. Lau
Leaf Wax Hydrogen Isotopes Reflect Storm Track Position Over Western North America
Tripti Bhattacharya, David Fastovich, Christopher R. Maupin, Alexandra E. Thompson, Ran Feng, Jiang Zhu, Erin L. McClymont, Hayoung Bong, Allegra LeGrande, Sylvia Dee, Richard P. Fiorella
Climate of the Past
Growth and decay of the Iceland Ice Sheet through the last glacial cycle
Alexis Arturo Goffin, Lev Tarasov, Ívar Örn Benediktsson, and Joseph M. Licciardi
Interplay of North Atlantic freshening and deep convection during the last deglaciation constrained by Iberian speleothems
Laura Endres, Carlos Pérez-Mejías, Ruza Ivanovic, Lauren Gregoire, Anna L. C. Hughes, Hai Cheng, and Heather Stoll
The Geological Society of America
N/A
Nature
Decadal-scale droughts disrupted the African Humid Period in
the Sahara
Florence Sylvestre, Martin Melles, Volker Wennrich, Michèle
Dinies, Françoise Chalié, Didier Swingedouw, Anne Dallmeyer, Xiaoxu Shi, Martin
Claussen, Andrea Jaeschke, Christine Cocquyt, Jens Karls, Jan Kuper, Baba
Mallaye, Jean-Charles Mazur, Christine Paillès, Remadji Rirongarti, Janet
Rethemeyer, Benedikt Ritter-Prinz, Enno Schefuß, Finn Viehberg, Bernd Wagner,
Martin Werner, Abdallah N. Yacoub & Stefan Kröpelin
Observing the tidal pulse of rivers from wide-swath
satellite altimetry
M. G. Hart-Davis, D. Scherer, C. Schwatke, A. H. Sawyer, T.
M. Pavelsky, R. D. Ray, P. Matte, D. Dettmering & F. Seitz
Science
Tectonic origin of Yellowstone’s translithospheric magma
plumbing system
Zebin Cao, Lijun Liu, Bo Wan, Ling Chen, and Craig Lundstrom
PNAS
Projected changes in tropical instability wave activity in
the Pacific Ocean under greenhouse warming
Aoyun Xue, Samantha Stevenson, Julien Boucharel, and Minyang
Wang
Model evidence for distinct origins of glacial–interglacial
and millennial signals in Greenland dust
Peter O. Hopcroft and Denis-Didier Rousseau
Recent extremes in Antarctic sea ice extent modulated by
ocean heat ventilation
Earle A. Wilson, Lexi Arlen, and Ethan C. Campbell
Geology
Paleohydraulics of cyclonic storm deposits suggest that the
equatorial climate of Earth in the Pennsylvanian was not cold
Paul M. Myrow, Mingxi Hu, and Michael P. Lamb
Pronounced typhoon landfall imprints in the Holocene
precipitation isotope record from coastal South China
Jiantao Cao, Yanming Ruan, Liping Tian, Fajin Chen, Chao
Huang, Xiaobo Jin, Zhiguo Rao, and Guodong Jia
Late-Cenozoic tectonic versus glacial control on the
topographic evolution of the Terskey Range, Kyrgyz Tian Shan
Lingxiao Gong, Peter van der Beek, Edward R. Sobel, Taylor
F. Schildgen, Apolline Mariotti, Maxime Bernard, Johannes Glodny, and Isabel
Wapenhans
Nature Communications
Equatorward upper-ocean heat transport from the Southern
Ocean boosted interglacial warming
Ce Yang, Haowen Dang, Jian Xu, Xiaolin Ma, Xingxing Wang, Yu
Ren, Hongrui Zhang, Chen Li, Peng Zhang, Haijing Chen, Franck Bassinot, Yair
Rosenthal & Zhimin Jian
Machine-learning emergent constraints on surface albedo
feedback over Arctic land regions
Linfei Yu, Guoyong Leng, Lei Yao, Qiuhong Tang, Manfred
Wendisch, Jiali Qiu, Shengzhi Huang, Xiaoyong Liao & Jian Peng
Abiotic CO2 reduction promoted by carbonate and
phyllosilicate minerals on the primitive seafloor
Yuan Zhong, Ning Zhang, Daoming Huan, Jingxiang Low,
Isabelle Daniel, H. James Cleaves II, Chao Zhang, Yamei Li, Yawen Jiang, Xinyu
Wang, Christopher R. Glein, Jiawei Li, Yu Bai, Yaping Li, Fang Huang, Liping
Qin, Andrew H. Knoll, Jihua Hao, Ran Long & Yujie Xiong
Nature Climate Change
Climate policy feasibility across Europe relies on the
conditional middle
E. Keith Smith, Žan Mlakar, Alessio Levis, Mary Sanford, Lea
Stapper, Thijs Bouman, Johannes Emmerling, Goda Perlaviciute, Massimo Tavoni,
Loïc Berger, Jeroen van den Bergh, Thomas Bernauer, Alessia Casamassima, Thomas
Epper, Nahed Eddai, Ivan Savin, Milan Ščasný, Uyanga Turmunkh, Iva Zvěřinová
& Silvia Pianta
ENSO shapes salinity regimes and fish migration in the China
Seas
Zhixuan Wang, Han Huang, Guizhi Wang, Tangdong Qu, Yue Liu,
Xianghui Guo, Shiyun Lei, Jianyu Hu, Jingfang Fan, Jianping Gan, Ling Cao,
Xiaosong Chen & Minhan Dai
Naoto-san and I arrived in Kumamoto Prefecture on a chilly February Thursday for a short 2-day field trip to the Kyusendo Cave (球泉洞). Before the trip, I had learned that this was where stalagmites had been previously collected back in 2019. After the great flood of Kumamoto in 2020, the devastation of towns and roads near the cave prevented access to the cave. Now, five years onwards, we finally get the chance to revisit old sites and continue past research.
Entrance to the Kyusendo Cave (球泉洞)
Our primary objective this time was to revisit the previous sampling sites
to check on cave conditions and to sample the water in the surrounding
environment for carbon and oxygen isotopic measurements. As we made our way to
the sampling sites, we had to descend deep underground using ladders. As we
ventured further inside, water started seeping from the marble walls, and we
encountered underground waterfalls and rivers.
Descending ladder after ladder to get to our sampling sites
Through comparisons with old photos, we were able to identify the previous
sampling sites. We carefully set up funnels and bottles to collect dripwater
from the hanging stalactites while trying to avoid bumping into the hundreds of stalactites hanging from the ceiling above. Since it was the dry season, flow rates were low,
so we had to leave the bottles in the cave to collect water overnight. We also sampled
water from the underground waterfall and river. As we bottled up the water, we
took note of the cave’s temperature, humidity, and carbon dioxide concentration,
giving us a picture of environmental conditions underground.
Naoto-san setting up our dripwater-collecting funnel and vials. Watch out for the stalactites!
On the second day, Yokoyama-sensei joined us in the cave to collect the
bottles we placed the day before. We walked back to the sites where we left our
bottles yesterday, passing two Kumamon, the ever-present mascot of Kumamoto
Prefecture, on our way there. We were happy to find that all our bottles had been
filled to the brim with dripwater. With the teamwork and experience we had
built up the day before, we quickly packed up our samples and climbed back out
of the cave. After a quick lunch at a nearby restaurant, we drove around to nearby
spots to sample water from rivers in the area, wrapping up our field trip at a
beautiful waterfall.
Group picture with caving Kumamon