New Papers (Nature, etc.) 2026/04/07–2026/04/14

 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

 

Field Trip to Kyusendo Cave (2/4-2/6)

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

 

修士課程＆博士課程修了！

こんにちは！M2の今宮です。

この度、D3の根本さんが博士課程を修了し 博士 (理学) を取得しました！

おめでとうございます！！！！！

また、M2の田畑くん、今宮は 修士 (理学) を取得しました！

おめでとうございます！！！！（ありがとうございます）

それぞれの新天地でのご活躍をお祈り申し上げます～～

New Papers (Elsevier, etc.) 2025/03/24–2026/03/31

Chemical Geology

Terrestrial dominance of sedimentary organic carbon sink in the Antarctic Weddell Sea since MIS 5
Yihao Hu, Thomas J. Algeo, Jingteng Guo, Qingyun Nan, Zheng Tang, Zhifang Xiong, Tiegang Li

Tracing arsenic and antimony in mining-impacted environments: New insights from antimony isotopes
Colin Ferrari, Kevin B. White, Carol J. Ptacek, David W. Blowes

Silicon isotope-based assessments of biogenic and dissolved silica content determination in marine sediments
Die Li, Quanchao Cui, Haiyang Liu, Tzu-Hao Huang, Wei-li Hong, Bangqi Hu, Jing Huang, Min Luo, Weidong Sun, Xiaole Sun

Geochimica et Cosmochimica Acta

Ferrous iron input retards denitrification and drives N2O accumulation across salinity gradients
Jianrong Huang, Jingjing Zhao, Sayed Dildar Hussain, Mingxian Han, Jian Yang, Qing Liu, Andreas Kappler, Hongchen Jiang

Soil formation and weathering over the past 60 kyr reconstructed using lithium isotopes from Maar records

Philip A.E. Pogge von Strandmann, Silke Voigt, Ying Zhou, Denis Scholz, Wolfgang Müller, Anthony Dosseto, Frank Sirocko

Quaternary International

Hydroclimatic heterogeneity in Southwest China revealed from trace elements of a Medieval-to-modern stalagmite

Chen-Yi Wang, Jun-Yun Li, Chao-Jun Chen, Jian Zhang, Yao Wu, Ting-Yong Li

New Papers (AGU, etc.) 2026/03/17~2026/03/23

Geochemistry, Geophysics, Geosystems

Magma Paths of the Karthala and La Grille Volcanoes (Grande Comore) Revisited: New Evidence From Geomorphology and Geochemistry

François J. P. Lötter, Nicolas Villeneuve, Andrea Di Muro, Nils Lenhardt, Laurent Michon, Pascale Besson, Hamid Soulé

Geophysical Research Letters

Unveiling the Role of Sea-Ice Loss in Early-20th-Century Arctic Warming

F. Li, V. A. Semenov, N. S. Keenlyside, T. A. Aldonina, K.-J. Ha, E.-S. Chung, X.-Q. Yang

A 1100-Year Blue-Ring Record Reveals Sub-Annual Cooling Events Hidden in Tree-Ring Width Chronologies

Liliana Siekacz, Charlotte Pearson, Matthew Salzer, Marcin Koprowski, Jakub Wojtasik

From Spinning Sea Ice Floes to Ocean Enstrophy Spectra in the Marginal Ice Zone

M. Kim, G. E. Manucharyan, M. H. DiBenedetto, E. M. Buckley, D. M. Watkins, M. M. Wilhelmus

Modeling Variability in Vertical Profiles of Particulate Organic Carbon Flux

Katherine Taylor, Raffaele Ferrari, B. B. Cael

Insights From Two Decades of Seismicity at Columbia Glacier

Sebin John, Michael E. West, Martin Truffer

Satellite Observations Reveal Complex Zonal Shifts of Western Boundary Currents Over the Past Three Decades

Yihang Zhang, Shuyi Zhou, Fanghua Xu

Transient Evolution of Polar Amplification Under Different CO2 Ramping Rates

Camille Hankel, David B. Bonan

Paleoceanography and Paleoclimatology

Eccentricity Controls the Magnitude and Periodicity of Pleistocene Glacial Cycles

Samuel T. Kodama, Terrence Blackburn

Holocene Composition, Origin, and Evolution of Terrigenous Organic Matter in the Southwestern Atlantic Ocean: Insights About Vegetation, Climate and Oceanographic Variations

F. R. Santos, R. A. Lourenço, S. Taniguchi, C. C. Martins, I. K. C. Wainer, M. M. Mahiques, R. H. Nagai, R. C. L. Figueira, I. D. Bouloubassi, M. C. Bícego

Mid-Holocene Seasonal and Annual South American Temperatures Across PMIP Phases: Contrasts With Modern Climate and Evaluation Against Proxy Records

Ana Laura Berman, Gabriel Silvestri, Ilana Wainer, Marcela S. Tonello, Roberto Donna, Nicolás J. Cosentino, Iuri Gorenstein, Luciana F. Prado

Climate of the Past

Cryosphere and ocean variability in Kane Basin since the 18th century: insights from two marine multi-proxy records

Anna Bang Kvorning, Marie-Alexandrine Sicre, Gregor Luetzenburg, Sabine Schmidt, Thorbjørn Joest Andersen, Vincent Klein, Eleanor Georgiadis, Audrey Limoges, Jacques Giraudeau, Anders Anker Bjørk, Nicolaj Krog Larsen, and Sofia Ribeiro

Exploring the Mid-Pleistocene transition with a simple physical model

Sergio Pérez-Montero, Jorge Alvarez-Solas, Jan Swierczek-Jereczek, Daniel Moreno-Parada, Alexander Robinson, and Marisa Montoya