Temporal Evolution of Vapor Pressure Deficit Observed in Six Locations of Different Brazilian Ecosystems and Its Relationship with Micrometeorological Variables

In this study, data collected from 2000 to 2019 on vapor pressure deficit (VPD) and its relationship with micrometeorological variables (fire occurrences, aerosol concentration, temperature, and carbon flux) were analyzed in six locations situated in different Brazilian ecosystems: Rio Branco, AC; M...

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Published in:Forests 2023-08, Vol.14 (8), p.1543
Main Authors: Palácios, Rafael da Silva, de Paulo, Sérgio Roberto, de Paulo, Iramaia Jorge Cabral, Lobo, Francisco de Almeida, Maionchi, Daniela de Oliveira, da Silva, Haline Josefa Araujo, da Silva, Ian Maxime Cordeiro Barros, Marques, João Basso, Biudes, Marcelo Sacardi, Dalmagro, Higo José, Rodrigues, Thiago Rangel, Curado, Leone Francisco Amorim
Format: Article
Language:English
Subjects:
Accuracy
Aerosols
Agricultural production
Brazil
Carbon
Carbon sequestration
Climate change
Drought
Ecosystems
Environmental aspects
Forests and forestry
Global climate
Land use
Measurement
Radiation
Rainforests
Semi arid areas
Semiarid lands
Spectrum analysis
Time-series analysis
Vapor pressure
Vapors
Variables
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Summary:In this study, data collected from 2000 to 2019 on vapor pressure deficit (VPD) and its relationship with micrometeorological variables (fire occurrences, aerosol concentration, temperature, and carbon flux) were analyzed in six locations situated in different Brazilian ecosystems: Rio Branco, AC; Manaus, AM; Alta Floresta, MT (within the Amazon Rainforest); Baia das Pedras, MT (Pantanal); Fazenda Miranda, MT (Cerrado); and Petrolina, PE (northeastern semiarid region). Temporal series analysis of VPD was conducted by determining the principal component of singular spectrum analysis (SSA) for this variable in all locations. It was observed that the main component of SSA for VPD is sensitive to local land-use changes, while no evidence of large-scale influences related to global climate change was observed. A strong coupling between VPD values and local maximum temperature with monthly fire occurrence and logarithmic aerosol concentration profiles was also observed. The results of the study are discussed in the context of the ecosystems’ carbon sequestration capacity. The combined results of the study indicate a scenario in which local land-use changes can compromise the capacity of Brazilian ecosystems to absorb carbon.
ISSN:1999-4907
1999-4907
DOI:10.3390/f14081543