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- Title
Carbon dioxide concentration in the savannah Amazon: a case study.
- Authors
de Andrade, Antonio Marcos Delfino; da Siva, Rodrigo; da Silva, Júlio Tota; dos Santos Moreira, Vinicius; Barros dos Santos, Aurilene; Aquino Santana, Raoni; Da Silva Pinto, Joicy
- Abstract
To investigate the correlation between two time series (CO2 versus air temperature and wind speed), we used coherency wavelets and phase angle. The datasets used in this study are in the October 16 of 2018, measured from micrometeorological tower in savanna natural area (2 ° 49'30 "S; 54 ° 54'35" W; 82 m amsl), Santarém (PA). The correlation between with CO2 concentration and air temperature detected high coherence (upper 0.8). When confronted with the wind speed, in microscale, detection a chaotic and disordered region, displaying very intermittent and showed "islands" (statistically significant), justified by the low amplitude between them. Naturally, the use of coherence wavelet and phase is fundamental to emphasize the between with CO2 and meteorological variables ration. It is evident, even for one day only, antiphase relation between with the CO2 and air temperature signals. The temporal domain less than 32 minutes (microscale), the wind speed, at some moments, exerts a strong influence on the concentration of the referred gas (> 0.8), mainly from 09 to 15 local time.
- Subjects
CARBON dioxide; SAVANNAS; WIND speed; ATMOSPHERIC temperature; TIME series analysis
- Publication
Revista Ciência e Natura, 2020, Vol 42, p1
- ISSN
0100-8307
- Publication type
Article
- DOI
10.5902/2179460X53214