A new mechanism for millennial scale positive precipitation anomalies over tropical South America

MC Campos, CM Chiessi, M Prange, S Mulitza… - Quaternary Science …, 2019 - Elsevier
Continental and marine paleoclimate archives from northwestern and northeastern South
America recorded positive precipitation anomalies during Heinrich Stadials (HS). These …

Changes in obliquity drive tree cover shifts in eastern tropical South America

JQ Ferreira, CM Chiessi, M Hirota, RS Oliveira… - Quaternary Science …, 2022 - Elsevier
Despite its great ecological importance, the main factors governing tree cover in tropical
savannas as well as savanna-forest boundaries are still largely unknown. Here we address …

Insolation and greenhouse gas forcing of the South American Monsoon System across three glacial‐interglacial cycles

A Hou, A Bahr, J Raddatz, S Voigt… - Geophysical …, 2020 - Wiley Online Library
Precipitation extremes with devastating socioeconomic consequences within the South
American Monsoon System (SAMS) are expected to become more frequent in the near …

A Comparison Study of Mg/Ca‐, Alkenone‐, and TEX86‐Derived Temperatures for the Brazilian Margin

A Bahr, A Jaeschke, A Hou, K Meier… - Paleoceanography …, 2023 - Wiley Online Library
The reconstruction of accurate sea‐surface temperatures (SST) is of utmost importance due
to the ocean's central role in the global climate system. Yet, a number of environmental …

Forcing of western tropical South Atlantic sea surface temperature across three glacial-interglacial cycles

A Hou, A Bahr, S Schmidt, C Strebl… - Global and Planetary …, 2020 - Elsevier
The western tropical Atlantic (WTA) supplies warm and saline waters to the upper-limb of the
Atlantic Meridional Overturning Circulation (AMOC) and may store excess heat and salinity …

Coupled oceanic and atmospheric controls of deglacial Southeastern South America precipitation and Western South Atlantic productivity

KJF Meier, A Jaeschke, J Rethemeyer… - Frontiers in Marine …, 2022 - frontiersin.org
Various mechanisms were proposed as substantial drivers of (sub) tropical South American
hydroclimate changes during the last deglaciation. However, the interpretation of past …

The cold-water coral Solenosmilia variabilis as a paleoceanographic archive for the reconstruction of intermediate water mass temperature variability on the Brazilian …

S Endress, N Schleinkofer, A Schmidt… - Frontiers in Marine …, 2022 - frontiersin.org
Recent oceanographic observations have identified significant changes of intermediate
water masses characterized by increased temperatures, lowered pH and deoxygenation. In …

Late Holocene precipitation fluctuations in South America triggered by variability of the North Atlantic overturning circulation

A Bahr, S Kaboth‐Bahr, A Jaeschke… - Paleoceanography …, 2021 - Wiley Online Library
Historic droughts document the strong spatio‐temporal variability of the South American
Monsoon System, which currently provides more than two thirds of the rainfall in tropical …

Mercury deposition in the western tropical South Atlantic during the last 70 ka

BS Chede, IM Venancio, TS Figueiredo… - Palaeogeography …, 2022 - Elsevier
Mercury is released via natural and anthropogenic sources. Atmospheric deposition via dry
and wet deposition is the main source of mercury to the continents and oceans. In the …

Spatiotemporal discharge variability of the Doce River in SE Brazil during MIS 6 and 5

I Arndt, S Voigt, R Petschick, A Hou… - Frontiers in Earth …, 2022 - frontiersin.org
The modern precipitation balance in southeastern (SE) Brazil is regulated by the South
American summer Monsoon and threatened by global climate change. On glacial …