Programa LBA

➡ Transparência e resultados que fortalecem a ciência na Amazônia.

🟢Conheça as ações e resultados que se destacaram em cada período.

➡ Relatórios disponíveis no link https://programalba.cloud/lba-em-numeros/relatorio-gestao

O gerente científico do Programa LBA, Bruce Forsberg, acompanhou a visita do senador Omar Aziz nesta quinta-feira (23), no Inpa.

O parlamentar destinou emendas para obras de infraestrutura da instituição, incluindo ações voltadas ao LBA.

Uma das emendas, no valor de R$500 mil, será aplicada na recuperação e melhoria da trilha de acesso à Torre de Micrometeorologia K34, localizada na Estação Experimental ZF-2, em Manaus.

Saiba mais no link: https://programalba.cloud/component/content/article/17-noticias/202-recursos-de-emenda-parlamentar-fortalecem-infraestrutura-de-pesquisa-do-lba?Itemid=101

ARTIGO LBA:

de Souza, G.N.B., de França e Silva, J.A., Ribeiro, K.L. et al. Validation of Satellite-based and Gridded Precipitation Products for Gap-filling in Precipitation Series in the Eastern Amazon. Remote Sens Earth Syst Sci 9, 28 (2026). https://doi.org/10.1007/s41976-026-00278-z

Abstract - Accurate precipitation measurement is essential for climate, hydrological, and agronomic studies. However, in regions such as the Amazon, the scarcity of rain gauges and frequent gaps in historical series pose a significant challenge for long-term analyses. This study evaluated the performance of satellite and gridded precipitation estimates for gap-filling daily rainfall data recorded between 2019 and 2024. The observed dataset was obtained from a micrometeorological tower installed in an oil palm-based Agroforestry System (AFS) in the Eastern Amazon. The evaluation employed widely recognized statistical metrics, such as the coefficient of determination (R2 ), root mean square error (RMSE), mean absolute error (MAE), percent bias (PBIAS), Nash-Sutcliffe efficiency (NSE), and Willmott’s index of agreement (d). Additionally, cumulative precipitation curves from different databases were compared with the observed series to identify over- or underestimation trends. The results showed that, among the tested databases, NASA Power (NP) exhibited the best performance in terms of consistency and lower bias, making it the most suitable for filling gaps in the observed series. The analyses highlighted the importance of a careful selection of alternative databases to ensure data continuity and quality in remote tropical regions, an essential aspect for hydrological modeling studies.

O projeto Nanorad’s promove a palestra sobre soluções integradas para o monitoramento e a valoração de carbono em florestas.

O Nanorad’s é coordenado pelo pesquisador do Inpa, José Francisco Gonçalves, e é um projeto associado ao Programa LBA/Inpa-MCTI.

🎓 A atividade será ministrada pela professora Hewlley Imbuzeiro (UFV) e apresentará abordagens que integram micrometeorologia, sensoriamento remoto e modelagem biofísica para estimar fluxos de carbono, biomassa e produtividade em ecossistemas florestais.

O Nanorad’s desenvolve pesquisas voltadas à recuperação de áreas degradadas na Amazônia, integrando ensino, ciência e inovação em parceria com diversas instituições nacionais.

🔗 Saiba mais no link:
https://programalba.cloud/index.php/component/content/article/17-noticias/200-palestra-aborda-monitoramento-e-valoracao-de-carbono-em-florestas?Itemid=101

A produção científica do LBA/Inpa-MCTI ganhou um novo espaço, mais dinâmico e fácil de navegar. Desenvolvida para modernizar a gestão da produção científica, ela reúne publicações e métricas em um só lugar, com apoio de inteligência artificial para categorizar melhor as produções.

Agora ficou mais simples acessar artigos, dissertações, teses e outras publicações com colaboração do Programa LBA.

🔗Acesse pelo site institucional https://programalba.cloud/ ou diretamente no endereço: https://scholar.programalba.cloud/

OPORTUNIDADE

📢 Vaga de Bolsa TT-IV (FAPESP) – Projeto AmazonFACE

Está aberta uma vaga de bolsa TT-IV (FAPESP) no projeto temático AmazonFACE: avaliando os efeitos do aumento de CO₂ na ecologia da floresta amazônica (CEPAGRI/UNICAMP).

🔎 Atividades: apoio a inventários de carbono, coleta de dados de campo, censo de árvores, medições de dendrobandas e fluxos de CO₂, manutenção de equipamentos e organização de dados.

📍 Local: INPA – Manaus (AM)
👩‍🔬 Supervisão: Simone Aparecida Vieira (NEPAM/UNICAMP)
👩‍🔬 Co-supervisão: Laynara Lugli (INPA)

📌 Requisitos: graduação concluída e mínimo de 4 anos de experiência em pesquisa ou atuação profissional após a graduação em área relacionada.

📅 Prazo para candidatura: 31 de março

📄 Enviar: carta de intenção (1 página + 2 referências), CV formato FAPESP e histórico acadêmico.

📧 Candidaturas: [email protected]
(cc: [email protected]; [email protected])

Por favor, compartilhem com possíveis interessados!

dos Reis, A. L., Nascimento, J., Vara-Vela, A. L., & Herdies, D. L. 2026. Urban pollution effects on warm-cloud microphysics in the central Amazon Basin: A WRF-Chem and GoAmazon2014/5 analysis. Atmospheric Environment, 368, 121788. doi:https://doi.org/10.1016/j.atmosenv.2026.121788

The impact of emissions from large urban centers on atmospheric chemistry and regional climate is a central issue in atmospheric sciences. This study uses WRF-Chem and GoAmazon2014/5 data to assess how urban and forest emissions interact to influence cloud properties in the Amazon. The region around Manaus, in the central Amazon, provides a unique environment for this study worldwide. During the wet season, clean air masses transported by trade winds interact with urban emissions, altering the atmosphere's chemical composition and impacting clouds microphysical and radiative properties. The interaction between urban emissions from Manaus and emissions from the Amazon rainforest modulates aerosol concentration and size. Polluted clouds exhibit a smaller effective radius (De), while liquid water content (LWC) and cloud droplet number concentration (DNC) are higher. In background areas, the DNC is approximately 50 cm−3 and exceeds 150 cm−3 under highly polluted conditions. The higher LWC observed in polluted clouds is associated with the increased DNC, while the smaller De may delay the onset of rainfall. The amount of water v***r available in the atmosphere and the level of supersaturation determine how urban emissions influence the microphysical processes of cloud formation. Under low LWC conditions, warm precipitation is suppressed, while for high LWC (above 0.75 g m−3), the De increases until reaching levels associated with precipitation. These results highlight that the spatial and temporal variation in CCN concentration, modulated by the interaction between urban emissions and those from the tropical rainforest, plays a significant role in cloud microphysical processes in the central Amazon.

Silva, G. H. S.Farias, C. S.D'Oliveira, F. A. F.Fisch, G.de Santana, R. A. S.do Vale, R. S.Cohen, J. C. P.de Souza, R. A. F.Dias-Junior, C. Q. 2026. Do downdrafts always induce near-surface ozone enhancements above the Amazon region? Sci Total Environ, 1010, 181093. doi:10.1016/j.scitotenv.2025.181093

The investigation of atmospheric gases in the central Amazon, with emphasis on tropospheric ozone (O3), is fundamental to understanding impacts of climate change and anthropogenic activities. While previous studies associated downdrafts with near-surface O3-enhancement, cases of O3-decrease are still less explored. This study was conducted during the field mission from GoAmazon 2014/15 project. Experimental data and vertical O3 profiles from ERA5 reanalysis were used. 73 downdraft events were identified, of which around 51% were associated with near-surface O3-enhancement and the rest with decrease or minor variations. Numerical simulations were performed using the WRF-Chem model to investigate the three-dimensional dynamics of O3 during downdraft events. Two representative cases in O3 concentrations were selected to assess the model’s performance. The study revealed that the variability of near-surface O3 is driven by the O3 concentration in the middle troposphere as well as the wind direction patterns that precede the downdrafts. Our analysis shows that downdrafts carry air masses that have higher or lower concentrations of O3 than those near the surface. It was observed that wind direction, O3 concentration in the middle troposphere, and O3 concentration near the surface are identified as key factors that define whether the occurrence of a downdraft will result in an increase or decrease in surface O3. Enhancement events were associated with an increase of 11 ppbv, while decrease events showed reductions of 10 ppbv. These results may contribute to better parameterizations of some chemical processes in atmospheric models.