VARIABILITY OF THE MEAN CONCENTRATION OF CO2 ABOVE THE AMAZONIAN FOREST DURING NIGHTTIME ASSOCIATED WITH DISTINCT TURBULENCE REGIMES
DOI:
https://doi.org/10.5902/2179460X19840Keywords:
Floresta Amazônica 1. Camada Limite Noturna 2. Regimes Turbulentos 3. Concentração de CO2 4. ATTO 5.Abstract
We studied the Nocturnal Boundary Layer - CLN on area of primary tropical forest northeast of Amazonas State in Amazon Tall Tower Observatory - ATTO. We applied the method of Sun et al. (2012) to characterization three regimes dinamic stability in CLN: 1) a weak turbulence, with low average wind speed; 2) strong turbulence, with high avarage wind speed and 3) turbulent intermittency and nonstationarity conditions. There are seasonal variations in the values of "c" and from one regime to another. We investigated some of the main statistical characteristics of CO2 concentrations - "c" for each one the turbulent regimes. "c" slightly increases with the increase of the value of a characteristic turbulence velocity scale, VTKE until a threshold value, VL, from which a sudden increase in the values of "c" is observed.This find is important consequences for parametrization of meteorological variables in the NBL and modelling of the atmospheric flod in the interface forest-atmosferic.Downloads
References
Araújo, A. C., Dolman, A. J., Waterloo, M. J., Gash, J. H. C., Kruijt, B., Zanchi, F. B., Lange, J. M. E., Stoevelaar, R., Manzi, A. O., Nobre, A. D., Lootens, R. N., Backer, J. The spatial variability of CO2 storage and the interpretation of eddy covariance fluxes in central Amazonia. Agricultural and Forest Meteorology. 2010. 150, 226-237.
Doughty, C. E.; Goulden, M. L. Seasonal patterns of tropical forest leaf area index and CO2 exchange. Journal of Geophysical Research. 2008. v. 113, G00B06, doi: 10.1029/2007JG000590.
Malhi, Y., Nobre, A. D., Grace. J., Kruijt, B., Pereira, M. G. P., Culf, A.; Scott, S. Carbon dioxide transfer over a Central Amazonian rain forest. Journal of Geophysical Reasearch. 1998. , December 27. 103, D24: 31593-31612.
Poulos, G. S., Blumen, W., Fritts, D. C., Lundquist, J. K., Sun, J., Burns, S. P., Nappo, C., Banta, R., Newsom, R., Cuxart, J., Terradellas, E., Balsley., B., Jensen, M. CASES-99: A comprehensive investigation of the stable nocturnal boundary layer. Bulletin of the American Meteorological Society. 2002.83, 4: 555-581.
Sun, J.; Mahrt, L.; Banta, R. M.; Pichugina, Y. L. Turbulence Regimes and Turbulence Intermittency in the Stable Boundary Layer during CASES-99. Journal of the Atmospheric Sciences. 2012. v. 69, p. 338-351.
Sun, J.; Mahrt, L.; Nappo, C.; Lenschow, D. H. Wind and Temperature Oscillations Generated by Wave-Turbulence Interactions in the Stably Stratified Boundary Layer. Journal of the Atmospheric Sciences. 2015. v. 72, p. 1484-1503.
Downloads
Published
How to Cite
Issue
Section
License
To access the DECLARATION AND TRANSFER OF COPYRIGHT AUTHOR’S DECLARATION AND COPYRIGHT LICENSE click here.
Ethical Guidelines for Journal Publication
The Ciência e Natura journal is committed to ensuring ethics in publication and quality of articles.
Conformance to standards of ethical behavior is therefore expected of all parties involved: Authors, Editors, Reviewers, and the Publisher.
In particular,
Authors: Authors should present an objective discussion of the significance of research work as well as sufficient detail and references to permit others to replicate the experiments. Fraudulent or knowingly inaccurate statements constitute unethical behavior and are unacceptable. Review Articles should also be objective, comprehensive, and accurate accounts of the state of the art. The Authors should ensure that their work is entirely original works, and if the work and/or words of others have been used, this has been appropriately acknowledged. Plagiarism in all its forms constitutes unethical publishing behavior and is unacceptable. Submitting the same manuscript to more than one journal concurrently constitutes unethical publishing behavior and is unacceptable. Authors should not submit articles describing essentially the same research to more than one journal. The corresponding Author should ensure that there is a full consensus of all Co-authors in approving the final version of the paper and its submission for publication.
Editors: Editors should evaluate manuscripts exclusively on the basis of their academic merit. An Editor must not use unpublished information in the editor's own research without the express written consent of the Author. Editors should take reasonable responsive measures when ethical complaints have been presented concerning a submitted manuscript or published paper.
Reviewers: Any manuscripts received for review must be treated as confidential documents. Privileged information or ideas obtained through peer review must be kept confidential and not used for personal advantage. Reviewers should be conducted objectively, and observations should be formulated clearly with supporting arguments, so that Authors can use them for improving the paper. Any selected Reviewer who feels unqualified to review the research reported in a manuscript or knows that its prompt review will be impossible should notify the Editor and excuse himself from the review process. Reviewers should not consider manuscripts in which they have conflicts of interest resulting from competitive, collaborative, or other relationships or connections with any of the authors, companies, or institutions connected to the papers.
