The new record of drought and warmth in the Amazon in 2023 related to regional and global climatic features

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: April 6, 2024

In 2023 Amazonia experienced both historical drought and warm conditions. On October 26th the water levels at port of Manaus reached its lowest record since 1902 (12.70 m). this region, monthly maximum minimum temperature anomalies also surpassed previous values registered in 2015 (+ 3 °C above normal considering 1981-2020 average). Here we show that dry situation is associated with two main atmospheric mechanisms: (i) November 2022-February southern anomaly vertical integrated moisture flux (VIMF), related to VIMF divergence extreme rainfall deficit over southwestern Amazonia, (ii) June-August downward motion northern conditions region. Anomalies mechanisms during event. The first mechanism significantly correlated negative sea surface (SST) equatorial Pacific (November-February La Niña events). second positive SST Pacific, impacts June-September El Niño on Walker Circulation. While droughts were linked (warmer North Tropical Atlantic SST) austral summer (winter spring), transition from 2022-23 appears be a key climatic driver record-breaking situation, combined widespread anomalous warming worldwide ocean.

Language: Английский

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Amazon deforestation implications in local/regional climate change

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(50)

Published: Nov. 30, 2023

Humans become increasingly fragile as they age. We show that something similar may happen to states, although for the risk of termination levels off grow older, allowing some persist millennia. Proximate causes their ...How states and great powers rise fall is an intriguing enigma human history. Are there any patterns? Do polities more vulnerable over time age? analyze longevity in hundreds premodern using survival analysis help ...

Language: Английский

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Weakened future surface warming in China due to national planned afforestation through biophysical feedback

npj Climate and Atmospheric Science, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 6, 2025

Language: Английский

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The Use of Artificial Intelligence to Curb Deforestation in the Brazilian Rainforest

IGI Global eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 81 - 122

Published: Feb. 7, 2025

Tropical rainforests like the Amazon are invaluable ecosystems for human society and biodiversity. However, they facing unprecedented threats, primarily from deforestation. This chapter explores use of machine learning (ML) deep (DL) to address this pressing environmental problem. By analyzing different ML/DL methods, we show how these tools can be used understand deforestation patterns in Brazilian better. Specifically, discuss help identify drivers deforestation, improve remote sensing-based monitoring, predict future trends. Our results, particularly role providing actionable insights, empower decision-makers policymakers with knowledge make informed choices. Ultimately, strategies contribute more effective forest conservation measures sustainable land use, reassuring audience about reliability our research.

Language: Английский

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Temperature and Precipitation Extremes in the Brazilian Legal Amazon: A Summary of Climatological Patterns and Detected Trends

Atmosphere, Journal Year: 2025, Volume and Issue: 16(2), P. 222 - 222

Published: Feb. 16, 2025

The continuous understanding of extreme weather events in the Amazon is fundamental due to importance this biome for regional and planetary climate system. Climate characterization identification changes current can be key findings adaptation mitigation measures. This study examined climatology trends 20 indices associated with air temperature precipitation Brazilian Legal (BLA). Daily observed data, interpolated at grid points, were analyzed from 1961 2020. Statistical tests employed determine trend’s significance magnitude. results indicate that prolonged heat, hot days, annual records have become increasingly frequent practically all BLA over last decades. Warm days nights are increasing approximately +11 days/decade. Heat waves gone 10 consecutive on average 1960s around 30–40 recent years. Indices intensity frequency show a reduction, especially rainiest portion BLA, western sector. In east/south region where dry reach 100 days/year, they continue increase rate +1.5 days/decade, fact related delay beginning rainy season. These aspects deserve attention since impact local circulation, reducing convergence humidity not only but also central-southern Brazil.

Language: Английский

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Observed different impacts of potential tree restoration on local surface and air temperature

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: March 8, 2025

Abstract Tree restoration can cool or warm the local climate through biophysical processes. However, magnitude of these effects remains unconstrained at large scales, as most previous observational studies rely on land surface temperature (Ts) rather than more policy-relevant air (Ta). Using satellite observations, we show that Ta responds to tree cover change only 15–30% observed in Ts. This difference is supported by independent evidence from site and be attributed reduced aerodynamic resistance resultant flatter near-surface profiles forests compared non-forests. At mid- high-latitudes, maximum seasonal warming cooling accounts for approximately 10% equivalent effect carbon sequestration terms magnitude, whereas Ts reach 40%. These findings highlight importance selecting appropriate metric different applications avoid exaggerating underestimating impacts forestation.

Language: Английский

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Evaluating the Spatial Relationships Between Tree Cover and Regional Temperature and Precipitation of the Yucatán Peninsula Applying Spatial Autoregressive Models

Land, Journal Year: 2025, Volume and Issue: 14(5), P. 943 - 943

Published: April 26, 2025

Deforestation and forest degradation are important drivers of global warming, yet their implications on regional temperature precipitation patterns more elusive. In the Yucatán Peninsula, cover loss deterioration has been rapidly advancing over past decades. We applied local indicators spatial association (LISA) cluster analysis autoregressive models (SAR) to evaluate relationships between tree precipitation. integrated NASA’s Global Forest Cover Change (GFCC) WorldClim’s historical monthly weather datasets (2000–2015) assess effects deforested, degraded, dense land distributions Peninsula. LISA analyses show warmer drier conditions geographically coincide with deforested degraded cover, but outliers allude potential influence impacts climate. Controlling dependencies including covariates, SAR indicate that deforestation is associated higher annual mean temperatures minimum during dry wet seasons, decreased in season. Degraded was related maximum did not relate variability. highlight complex interactions climate emphasize importance conservation for mitigating change.

Language: Английский

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Consistency assessment of latent heat flux and observational datasets over the Amazon basin

Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(5), P. 054044 - 054044

Published: April 19, 2024

Abstract The Amazon basin plays a crucial role in the global hydrological cycle and climate system. Removal of latent heat from surface covered by tropical forest through evapotranspiration is key process that still requires further research due to complex nature involved processes, lack observations different model assumptions. Here we present an assessment consistency between fluxes datasets indirect comparison against daily amplitude temperature vegetation status estimated satellite observations. Our study based on hypothesis observational data can be used provide hints how realistically are represented datasets. Results evidence diverge inside both space time, but it possible figure out areas under water-limited conditions, especially around borders some regions over eastern/southeastern Amazonia. In despite these differences, clear link temperature, leaf area index flux observed particular seasons, where also correlations reach values closer −0.98 (0.94) for (leaf index) indicating suitable assessing representation partitioning energy models widely

Language: Английский

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Indigenous Territoriality and the Mediation of Space and Scale in Ritual Language

Oxford University Press eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 275 - 302

Published: Jan. 23, 2025

Abstract For Wixaritari (Huichol people) the visionary recognition (nierika) and naming of ancestral emergence-places (kakaiyarita) is central to process claiming territory (kiekari) not only where they live in Sierra Madre Occidental, but throughout their historical sphere exchange relationships western north-central Mexico. This has resulted appearance homonymous toponyms multiple sites across considerable distances. In some cases, Wixarika ceremonial experts have had deliberate which site out several eligible for government cultural heritage protection Indigenous sacred places. Making ritual processes part wider territorial claims requires translating shamans’ narrations dialogs with figures landscape, first from esoteric registers into standard then Spanish. serial interpretation makes shamanistic identifications place legible therefore politically salient broader publics on regional, national, global scales: a semiotic mediation interpretive lamination.

Language: Английский

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Combining remote sensing applications and local knowledge in understanding urban heat in a semi-arid region: a case study of Tamale’s thermal landscape

Local Environment, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 19

Published: April 19, 2025

Language: Английский

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