Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation.

Ocean dissolved oxygen (DO) can provide insights on how the marine carbon cycle affects global climate change. However, the net global DO change and the controlling mechanisms remain uncertain through the last deglaciation. Here, we present a globally integrated DO reconstruction using thallium isotopes, corroborating lower global DO during the Last Glacial Maximum [19 to 23 thousand years before the present (ka B.P.)] relative to the Holocene. During the deglaciation, we reveal reoxygenation in the Heinrich Stadial 1 (~14.7 to 18 ka B.P.) and the Younger Dryas (11.7 to 12.9 ka B.P.), with deoxygenation during the Bølling-Allerød (12.9 to 14.7 ka B.P.). The deglacial DO changes were decoupled from North Atlantic Deep Water formation rates and imply that Southern Ocean ventilation controlled ocean oxygen. The coherence between global DO and atmospheric CO2 on millennial timescales highlights the Southern Ocean's role in deglacial atmospheric CO2 rise.

Global reorganization of deep-sea circulation and carbon storage after the last ice age.

Using new and published marine fossil radiocarbon (14C/C) measurements, a tracer uniquely sensitive to circulation and air-sea gas exchange, we establish several benchmarks for Atlantic, Southern, and Pacific deep-sea circulation and ventilation since the last ice age. We find the most 14C-depleted water in glacial Pacific bottom depths, rather than the mid-depths as they are today, which is best explained by a slowdown in glacial deep-sea overturning in addition to a "flipped" glacial Pacific overturning configuration. These observations cannot be produced by changes in air-sea gas exchange alone, and they underscore the major role for changes in the overturning circulation for glacial deep-sea carbon storage in the vast Pacific abyss and the concomitant drawdown of atmospheric CO2.

Atualização das recomendações da prática quanto ao cateter central de inserção periférica em recém-nascidos / Updated practical recommendations for the peripherally inserted central catheter in newborns / Actualización de las recomendaciones de la práctica sobre el catéter central de inserción periférica en neonatos

Objetivo: discorrer sobre as recomendações para prática de enfermagem mais atuais no manejo de cateter central de inserção periférica (PICC) em recém-nascidos (RNs). Conteúdo: a assistência ao RN com PICC vem sofrendo diversas alterações em relação às formas de mensuração do tamanho do cateter a ser inserido e de visualização da veia a ser puncionada, aos fatores que influenciam a escolha do sítio de inserção, ao acompanhamento da migração do cateter, à confirmação da ponta do PICC e a outros cuidados de manutenção e remoção do dispositivo. Conclusão: houve uma grande evolução do conhecimento referente ao manejo do PICC na população neonatal, mas ainda existem lacunas de conhecimento a serem exploradas. Espera-se uma melhoria da assistência ao RN que receberá um PICC.

Objective: to discuss the most current recommendations for nursing practice in the management of the peripherally inserted central catheter (PICC) in newborns (NBs). Content: care for NBs with PICCs has undergone several changes as regards measuring the size of the catheter to be inserted and visualizing the vein to be punctured, factors influencing choice of insertion site, monitoring for catheter migration, confirming PICC tip position, and other precautions for device maintenance and removal. Conclusion: knowledge of PICC management in newborns has advanced greatly, but still features gaps to be explored. Care for NBs who receive a PICC is expected to improve.

Objetivo: discutir las recomendaciones más actuales para la práctica de enfermería sobre el manejo de catéteres centrales de inserción periférica (PICC) en recién nacidos (RN). Contenido: la asistencia al RN con PICC ha sufrido varios cambios en relación con las formas de medir el tamaño del catéter a insertar y la visualización de la vena a puncionar, los factores que influyen en la elección del sitio de inserción, el seguimiento de la migración del catéter, la confirmación de la punta del PICC y otras precauciones de mantenimiento y extracción del dispositivo. Conclusión: ha habido una gran evolución del conocimiento sobre el manejo de PICC en la población neonatal, sin embargo, aún existen brechas de conocimiento por explorar. Se espera una mejora en la asistencia al RN que recibirá un PICC.

Atualização das recomendações da prática quanto ao cateter central de inserção periférica em recém-nascidos / Actualización de las recomendaciones de la práctica sobre el catéter central de inserción periférica en neonatos / Updated practical recommendations for the peripherally inserted central catheter in newborns

RESUMO Objetivo discorrer sobre as recomendações para prática de enfermagem mais atuais no manejo de cateter central de inserção periférica (PICC) em recém-nascidos (RNs). Conteúdo a assistência ao RN com PICC vem sofrendo diversas alterações em relação às formas de mensuração do tamanho do cateter a ser inserido e de visualização da veia a ser puncionada, aos fatores que influenciam a escolha do sítio de inserção, ao acompanhamento da migração do cateter, à confirmação da ponta do PICC e a outros cuidados de manutenção e remoção do dispositivo. Conclusão houve uma grande evolução do conhecimento referente ao manejo do PICC na população neonatal, mas ainda existem lacunas de conhecimento a serem exploradas. Espera-se uma melhoria da assistência ao RN que receberá um PICC.

RESUMEN Objetivo discutir las recomendaciones más actuales para la práctica de enfermería sobre el manejo de catéteres centrales de inserción periférica (PICC) en recién nacidos (RN). Contenido la asistencia al RN con PICC ha sufrido varios cambios en relación con las formas de medir el tamaño del catéter a insertar y la visualización de la vena a puncionar, los factores que influyen en la elección del sitio de inserción, el seguimiento de la migración del catéter, la confirmación de la punta del PICC y otras precauciones de mantenimiento y extracción del dispositivo. Conclusión ha habido una gran evolución del conocimiento sobre el manejo de PICC en la población neonatal, sin embargo, aún existen brechas de conocimiento por explorar. Se espera una mejora en la asistencia al RN que recibirá un PICC.

ABSTRACT Objective to discuss the most current recommendations for nursing practice in the management of the peripherally inserted central catheter (PICC) in newborns (NBs). Content care for NBs with PICCs has undergone several changes as regards measuring the size of the catheter to be inserted and visualizing the vein to be punctured, factors influencing choice of insertion site, monitoring for catheter migration, confirming PICC tip position, and other precautions for device maintenance and removal. Conclusion knowledge of PICC management in newborns has advanced greatly, but still features gaps to be explored. Care for NBs who receive a PICC is expected to improve.

Olfactory sensory and perceptual evaluation in newborn infants: A systematic review.

Fetuses are able to process olfactory stimuli present in the womb and continue to show a preference for these odors for months after birth. Despite the accumulated knowledge about their early ability to perceive odors, there is a lack of validated scales for odor response in newborns. The evaluation of reactions of the olfactory system to environmental stimuli in infants has been defined by methodological theoretical approaches of experimental and clinical assessment tools. These approaches are mainly based on psychophysical approaches and predominantly use behavioral and physiological measures. Examples can be found in studies describing early abilities of newborn babies for behaviors or heart rate variability showing memory of maternal food preferences or mother's breast milk. This systematic review aimed to determine whether validated odor assessment tools can be feasibly used in studies. Particularly in light of the current COVID-19 pandemic and evidence of associated olfactory impairment resulting from SARS-COV-2 infection, the study is also motivated by the need for tools to assess olfactory function in neonates.

Olfactory sensory evaluation in newborn children of women infected with COVID-19 during pregnancy / Avaliação sensorial olfativa em crianças recémnascidas de mulheres infectadas com COVID-19 durante a gravidez

INTRODUCTION: In adults, olfactory loss is one of the earliest and most frequent acute clinical manifestations of SARS-CoV-2 infection. The number of children infected with SARS-CoV-2 is relatively small, perhaps due to the lower expression of Angiotensin Converting Enzyme 2 (ACE2) in children compared to adults. Little is known about foetal impairment in mothers infected with SARS-CoV-2. This paper describes an ongoing scientific project on smell perception in infantsOBJECTIVE: The goal of the study is to develop and validate a behavioural evaluative scale of olfactory perception in healthy newborns and to apply this scale to newborn children of women infected with COVID-19 during pregnancy comparing to newborn children of women without COVID-19 infection history, in order to compare these groupsMETHODS: This is a retrospective comparative analytical cohort study of 300 newborns exposed and unexposed to COVID-19 during pregnancy. The data collection will follow the experimental procedure in a previous study that explored odours of the maternal breastmilk, vanilla (sweet) and distilled water (neutral). A coffee smell was implemented as an addition to this previous study in order to include acid/bitterness category to the categories of stimuliDISCUSSION: It is feasible to argue the hypothesis of the involvement of the foetus' olfactory bulb as one of the indelible pathophysiological manifestations to the clinical diagnosis of COVID-19 with neurosensory olfactory deficit in foetuses and newborns affected by intrauterine infection. This study aims to investigate if newborn children of women infected with COVID-19 during pregnancy have olfactory sensory changes. The clinical trial was registered in the Brazilian Registry of Clinical Trials (ReBEC- RBR-65qxs2

INTRODUÇÃO: Em adultos, a perda olfativa é uma das manifestações clínicas agudas mais precoces e frequentes da infecção por SARS-CoV-2. O número de crianças infectadas com SARS-CoV-2 é pequeno, talvez devido à menor expressão da Enzima Conversora da Angiotensina 2 (ACE2) em crianças em comparação com adultos. Pouco se sabe sobre o comprometimento fetal em mães infectadas com SARS-CoV-2. Este artigo descreve um projeto em andamento sobre a percepção olfativa em bebês recém-nascidosOBJETIVO: o objetivo do presente estudo é desenvolver e validar uma escala de avaliação comportamental da percepção olfativa em recém-nascidos saudáveis e aplicá-la a recém-nascidos de mulheres infectadas com COVID-19 durante a gravidez e comparar a recém-nascidos de mulheres sem histórico de infecção por COVID-19MÉTODO: Este é um estudo de coorte analítico comparativo retrospectivo de 300 recém-nascidos expostos e não expostos ao COVID-19 durante a gravidez. A coleta de dados seguirá o procedimento experimental de estudo anterior que explorou odores do leite materno, baunilha (doce) e água destilada (neutro). Um cheiro de café foi implementado como um complemento a este estudo anterior, a fim de incluir a categoria ácido / amargo nas categorias de estímulosDISCUSSÃO: É possível argumentar a hipótese do envolvimento do bulbo olfatório do feto durante a vida intrauterina como uma das manifestações fisiopatológicas indeléveis para o diagnóstico clínico de COVID-19 com déficit olfatório neurossensorial em fetos e recém-nascidos afetados por infecção intrauterina. Este estudo tem como objetivo investigar se filhos recém-nascidos de mulheres infectadas com COVID-19 durante a gravidez apresentam alterações sensoriais olfativas. O ensaio clínico foi registrado no Registro Brasileiro de Ensaios Clínicos (ReBEC- RBR-65qxs2

Hammock and nesting in preterm infants: randomized controlled trial.

OBJECTIVE: To compare the physiological variables and the sleep-wake pattern presented by preterm in nesting and hammock positions after diaper change. METHOD: This is a crossover randomized controlled trial. It was conducted with 20 preterm infants who, after diaper change, were placed in nests or hammocks. These preterm infants were evaluated for physiological variables (heart rate and oxygen saturation) and behavioral variables (sleep and wakefulness). RESULTS: There was no statistically significant difference in the studied variables between nesting and hammock positions. However, regarding the categorical variable sleep, the comparison between the research phases for the hammock position showed differences between the baseline phase and the immediate recovery (p=0.00), baseline and late recovery (p=0.00), response and immediate recovery (p=0.00), response and late recovery (p=0.00). CONCLUSION: No differences were identified between the nest and the hammock; however, the use of the hammock favored the sleep of preterm infants compared to its non-use.

Profile of at-risk newborns attended by nurses in outpatient follow-up clinic: a retrospective cohort study.

OBJECTIVE: to analyze the cohort profile of at-risk newborns attended by nurses in a multidisciplinary follow-up clinic, with emphasis on the type of feeding and weight gain, after hospital discharge. METHOD: retrospective cohort, whose population is composed of at-risk newborns attended in a 4-year period. Data came from medical records and attendance report, later exported to R Program. The outcome variables were number of the nursing consultation, type of feeding, daily weight gain and main guidelines. We used descriptive statistics, frequency distribution and applied Mann-Whitney, Chi-Square, Spearman correlation, Variance and Tukey analysis, with p <0.05 being significant. RESULTS: a total of 882 consultations with 629 infants and families were analyzed. The frequencies of exclusive breastfeeding and weight gain increased as the consultations progressed. The infants who needed more consultations and with lower weight gain were those with lower gestational age (p = 0.001) and birth weight (p = 0.000), longer length of hospital stay (p <0.005), and diagnoses related to extreme prematurity (p <0.05), among others. CONCLUSION: nurses verified the importance of outpatient follow-up of at-risk newborns, especially in promoting breastfeeding and healthy growth.

Profile of at-risk newborns attended by nurses in outpatient follow-up clinic: a retrospective cohort study / Perfil de recém-nascidos de risco atendidos por enfermeiros em seguimento ambulatorial: estudo de coorte retrospectiva / Perfil de recién-nacidos de riesgo atendidos por enfermeros en seguimiento ambulatorio: estudio de cohorte retrospectivo

ABSTRACT Objective: to analyze the cohort profile of at-risk newborns attended by nurses in a multidisciplinary follow-up clinic, with emphasis on the type of feeding and weight gain, after hospital discharge. Method: retrospective cohort, whose population is composed of at-risk newborns attended in a 4-year period. Data came from medical records and attendance report, later exported to R Program. The outcome variables were number of the nursing consultation, type of feeding, daily weight gain and main guidelines. We used descriptive statistics, frequency distribution and applied Mann-Whitney, Chi-Square, Spearman correlation, Variance and Tukey analysis, with p <0.05 being significant. Results: a total of 882 consultations with 629 infants and families were analyzed. The frequencies of exclusive breastfeeding and weight gain increased as the consultations progressed. The infants who needed more consultations and with lower weight gain were those with lower gestational age (p = 0.001) and birth weight (p = 0.000), longer length of hospital stay (p <0.005), and diagnoses related to extreme prematurity (p <0.05), among others. Conclusion: nurses verified the importance of outpatient follow-up of at-risk newborns, especially in promoting breastfeeding and healthy growth.

RESUMO Objetivo: analisar o perfil de coorte dos recém-nascidos de risco atendidos por enfermeiros em Ambulatório de Seguimento Multidisciplinar, com destaque ao tipo de alimentação e ao ganho ponderal, após a alta hospitalar. Método: coorte retrospectiva, população composta por recém -nascidos de risco atendidos em período de 4 anos, dados procedentes de prontuário e relatório de atendimento, posteriormente exportados para o Programa R. As variáveis de desfecho foram: número da consulta com o enfermeiro, tipo de alimentação, ganho diário de peso e principais orientações. Houve a realização de estatística descritiva, distribuição de frequências e aplicação dos testes Mann-Whitney, Qui-Quadrado, Correlação de Spearman, Análise de Variância e Tukey, sendo significativo p<0,05. Resultados: foram analisados 882 atendimentos com 629 bebês e famílias. As frequências do aleitamento materno exclusivo e do ganho ponderal foram aumentando com o passar das consultas. Os bebês que necessitaram de mais consultas e com menor ganho ponderal foram os com menores idade gestacional (p=0,001) e peso de nascimento (p=0,000), maior tempo de internação (p<0,005) e que possuíam diagnósticos relacionados à prematuridade extrema (p<0,05), dentre outros. Conclusão: verificou-se a importância do acompanhamento ambulatorial de recém-nascidos de risco pelo enfermeiro, especialmente na promoção do aleitamento materno e do crescimento saudável.

RESUMEN Objetivo: analizar el perfil de cohorte de los recién-nacidos de riesgo atendidos por enfermeros en Ambulatorio de Seguimiento Multidisciplinario, con destaque al tipo de alimentación y al aumento de peso, después del alta hospitalaria. Método: cohorte retrospectiva, población compuesta por recién-nacidos de riesgo atendidos en período de 4 años, datos procedentes de archivos e informe de atendimiento, posteriormente exportados para el Programa R. Las variables de resultado fueron: número de la consulta con el enfermero, tipo de alimentación, aumento diario de peso y principales orientaciones. Se realizó una estadística descriptiva, distribución de frecuencias y aplicación de las pruebas Mann-Whitney, Chi-Cuadrado, Correlación de Spearman, Análisis de Varianza y Tukey, siendo significativo p<0,05. Resultados: fueron analizados 882 atendimientos con 629 bebés y familias. Las frecuencias del amamantamiento materno exclusivo y del aumento de peso fueron aumentando con el pasar de las consultas. Los bebés que necesitaron de más consultas y con menor aumento de peso fueron los con menor edad gestacional (p=0,001) y peso de nacimiento (p=0,000), mayor tiempo de internación (p<0,005) y que poseían diagnósticos relacionados a la prematuridad extrema (p<0,05), entre otros. Conclusión: se verificó la importancia del acompañamiento ambulatorio de recién-nacidos de riesgo por el enfermero, especialmente en la promoción del amamantamiento materno y del crecimiento saludable.

Hammock and nesting in preterm infants: randomized controlled trial / Hamaca de descanso y nido en prematuros: ensayo clínico aleatorizado / Rede de descanso e ninho em prematuros: ensaio clínico randomizado

ABSTRACT Objective: To compare the physiological variables and the sleep-wake pattern presented by preterm in nesting and hammock positions after diaper change. Method: This is a crossover randomized controlled trial. It was conducted with 20 preterm infants who, after diaper change, were placed in nests or hammocks. These preterm infants were evaluated for physiological variables (heart rate and oxygen saturation) and behavioral variables (sleep and wakefulness). Results: There was no statistically significant difference in the studied variables between nesting and hammock positions. However, regarding the categorical variable sleep, the comparison between the research phases for the hammock position showed differences between the baseline phase and the immediate recovery (p=0.00), baseline and late recovery (p=0.00), response and immediate recovery (p=0.00), response and late recovery (p=0.00). Conclusion: No differences were identified between the nest and the hammock; however, the use of the hammock favored the sleep of preterm infants compared to its non-use.

RESUMEN Objetivo: comparar las variables fisiológicas y el patrón de sueño y vigilia presentados por prematuros, cuando ellos son puestos en hamaca y en nido, después del cambio de pañales. Método: Se trata de un ensayo clínico aleatorizado del tipo crossover. Realizado con 20 prematuros que, tras el cambio de pañales, fueron colocados en hamacas de descanso y nido. Estos prematuros fueron evaluados en cuanto a las variables fisiológicas (frecuencia cardíaca y saturación de oxígeno) y variable conductual (sueño y vigilia). Resultados: No hubo diferencia estadísticamente significativa entre las condiciones nido y hamaca en cuanto a las variables estudiadas. Sin embargo, en cuanto a la variable categórica sueño, en las comparaciones entre las fases de la investigación para la condición hamaca, hubo diferencias entre fase basal y recuperación inmediata (p = 0,00), basal y recuperación tardía (p = 0,00), respuesta y recuperación inmediata (p = 0,00), respuesta y recuperación tardía (p = 0,00). Conclusión: No se identificaron diferencias entre hamaca y nido, sin embargo, el uso de la hamaca favoreció el sueño de prematuros en comparación a su no utilización.

RESUMO Objetivo: Comparar as variáveis fisiológicas e o padrão de sono-vigília apresentados por prematuros, quando colocados em rede e em ninho, após a troca de fraldas. Método: Trata-se de um Ensaio Clínico Randomizado do tipo cross-over, realizado com 20 prematuros que, após a troca de fraldas, foram posicionados em redes de descanso e ninho. Esses prematuros foram avaliados quanto às variáveis fisiológicas (frequência cardíaca e saturação de oxigênio) e variável comportamental (sono e vigília). Resultados: Não houve diferença estatisticamente significativa entre as condições ninho e rede quanto às variáveis estudadas. Entretanto, quanto à variável categórica sono, nas comparações entre as fases da pesquisa para a condição rede, houve diferenças entre fase basal e recuperação imediata (p=0,00), basal e recuperação tardia (p=0,00), resposta e recuperação imediata (p=0,00), resposta e recuperação tardia (p=0,00). Conclusão: Não se identificaram diferenças entre rede e ninho, entretanto, o uso da rede favoreceu o sono de prematuros comparado ao seu não uso.

Hammock position and nesting: comparison of physiological and behavioral effects in preterm infants. / Rede de descanso e ninho: comparação entre efeitos fisiológicos e comportamentais em prematuros.

OBJECTIVE: To compare the effects of the use of hammocks versus nesting in preterm infants, after diaper changing. METHODS: quasi-experimental study, a cross-over trial with 30 preterm newborns in an intermediate care nursery (ICN) in a public hospital in Brasilia-DF, conducted from November 2011 to March 2012. The effects of the two interventions (nesting and hammock) after diaper changing were assessed. Student's t test with a confidence level of 95% (p <0.05) was used in data analysis. RESULTS: In hammock position the preterm infants were found to be less stressed (p = 0.002), had fewer defining characteristics indicating nursing diagnosis "Disorganized Infant Behavior" (p = 0.05) and remained in a more suitable position for receiving intensive care compared to nesting (p = 0.04). CONCLUSION: Preterm infants in hammock position, compared to nesting, were less stressed, with a more organized behavior and in a better position for receiving intensive care.

Rede de descanso e ninho: comparação entre efeitos fisiológicos e comportamentais em prematuros / Hamaca y nido: comparación entre los efectos fisiológicos y de comportamiento en prematuros / Hammock position and nesting: comparison of physiological and behavioral effects in preterm infants

RESUMO Objetivo comparar os efeitos da aplicação de redes de descanso em prematuros, após a troca de fraldas, em comparação com o ninho. Métodos pesquisa quase experimental, crossover, com 30 prematuros internados em uma unidade de cuidados intermediários de um hospital público de Brasília, DF, no período de novembro de 2011 a março de 2012. Foram avaliados os efeitos das duas intervenções (ninho e rede) após a troca de fraldas. Para análise dos dados utilizou-se o teste t de Student com nível de confiança de 95% (p < 0,05). Resultados os prematuros, quando em rede, se mostraram menos estressados (p=0,002), tiveram menos características definidoras para o diagnóstico de enfermagem “Comportamento Desorganizado do Bebê” (p=0,05) e permaneceram em postura terapêutica em relação ao ninho (p=0,04). Conclusão quando comparado ao ninho, os prematuros posicionados em redes estiveram menos estressados, mais organizados e em melhor postura terapêutica.

RESUMEN Objetivo Para comparar los efectos de la aplicación de las hamacas en los bebés prematuros después de cambiarles pañales, en comparación con el nido. Métodos investigación casi experimental, cruzada con 30 recién nacidos prematuros en una unidad de cuidados intermedios en un hospital público en Brasilia-DF, a partir de noviembre de 2011 a marzo de 2012. Los efectos de las dos intervenciones (nido y la hamaca) después de cambiar pañales. Para el análisis de datos se utilizó la prueba t de Student con un nivel de confianza del 95% (p <0,05). Resultados prematuros cuando posicionados en hamaca, estaban menos estresados (p = 0,002), tenían menos características definitorias para el diagnóstico de enfermería “Comportamiento Desorganizado del Bebé” (p = 0,05) y se mantuvo en la postura terapéutica en relación con el nido (p = 0,04). Conclusión en comparación con el nido, los prematuros posicionados en hamaca estaban menos estresados, más organizados y con mejor posicionamiento terapéutico.

ABSTRACT Objective To compare the effects of the use of hammocks versus nesting in preterm infants, after diaper changing. Methods quasi-experimental study, a cross-over trial with 30 preterm newborns in an intermediate care nursery (ICN) in a public hospital in Brasilia-DF, conducted from November 2011 to March 2012. The effects of the two interventions (nesting and hammock) after diaper changing were assessed. Student’s t test with a confidence level of 95% (p <0.05) was used in data analysis. Results In hammock position the preterm infants were found to be less stressed (p = 0.002), had fewer defining characteristics indicating nursing diagnosis “Disorganized Infant Behavior” (p = 0.05) and remained in a more suitable position for receiving intensive care compared to nesting (p = 0.04). Conclusion Preterm infants in hammock position, compared to nesting, were less stressed, with a more organized behavior and in a better position for receiving intensive care.

Glacial forcing of central Indonesian hydroclimate since 60,000 y B.P.

The Indo-Pacific warm pool houses the largest zone of deep atmospheric convection on Earth and plays a critical role in global climate variations. Despite the region's importance, changes in Indo-Pacific hydroclimate on orbital timescales remain poorly constrained. Here we present high-resolution geochemical records of surface runoff and vegetation from sediment cores from Lake Towuti, on the island of Sulawesi in central Indonesia, that continuously span the past 60,000 y. We show that wet conditions and rainforest ecosystems on Sulawesi present during marine isotope stage 3 (MIS3) and the Holocene were interrupted by severe drying between ∼33,000 and 16,000 y B.P. when Northern Hemisphere ice sheets expanded and global temperatures cooled. Our record reveals little direct influence of precessional orbital forcing on regional climate, and the similarity between MIS3 and Holocene climates observed in Lake Towuti suggests that exposure of the Sunda Shelf has a weaker influence on regional hydroclimate and terrestrial ecosystems than suggested previously. We infer that hydrological variability in this part of Indonesia varies strongly in response to high-latitude climate forcing, likely through reorganizations of the monsoons and the position of the intertropical convergence zone. These findings suggest an important role for the tropical western Pacific in amplifying glacial-interglacial climate variability.