English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
 Local TagsRelease HistoryDetailsSummary
  Nighttime wind and scalar variability within and above an Amazonian canopy

Oliveira, P. E. S., Acevedo, O. C., Sörgel, M., Tsokankunku, A., Wolff, S., Araújo, A. C., et al. (2018). Nighttime wind and scalar variability within and above an Amazonian canopy. Atmospheric Chemistry and Physics, 18(5), 3083-3099. doi:10.5194/acp-18-3083-2018.

Item is

 

show all hide all

Basic

show hide
Item Permalink: https://hdl.handle.net/21.11116/0000-0000-3C24-5 Version Permalink: https://hdl.handle.net/21.11116/0000-000C-CD9A-0
Genre: Journal Article

Files

show Files
hide Files
:
BEX581D.pdf (Preprint), 3MB
View   Save
File Permalink:
https://hdl.handle.net/21.11116/0000-0000-3C26-3
Name:
BEX581D.pdf
Description:
Discussion paper
OA-Status:
Gold
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
View
Copyright Date:
-
Copyright Info:
-
License:
https://creativecommons.org/licenses/by/4.0/
:
BEX581.pdf (Publisher version), 3MB
View   Save
File Permalink:
https://hdl.handle.net/21.11116/0000-0000-CA07-5
Name:
BEX581.pdf
Description:
-
OA-Status:
Gold
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
View
Copyright Date:
-
Copyright Info:
-
License:
https://creativecommons.org/licenses/by/4.0/

Locators

show
hide
Locator:
http://dx.doi.org/10.5194/acp-18-3083-2018 (Publisher version)
Description:
OA
OA-Status:
Gold

Creators

show
hide
 Creators:
Oliveira, Pablo E. S.1, Author
Acevedo, Otávio C., Author
Sörgel, Matthias, Author
Tsokankunku, Anywhere, Author
Wolff, Stefan, Author
Araújo, Alessandro C., Author
Souza, Rodrigo A. F., Author
Sá, Marta O., Author
Manzi, Antônio O., Author
Andreae, Meinrat O., Author
Affiliations:
1External Organizations, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Nocturnal turbulent kinetic energy (TKE) and fluxes of energy, CO2 and O3 between the Amazon forest and the atmosphere are evaluated for a 20-day campaign at the Amazon Tall Tower Observatory (ATTO) site. The distinction of these quantities between fully turbulent (weakly stable) and intermittent (very stable) nights is discussed. Spectral analysis indicates that low-frequency, non-turbulent fluctuations are responsible for a large portion of the variability observed on intermittent nights. In these conditions, the low-frequency exchange may dominate over the turbulent transfer. In particular, we show that within the canopy most of the exchange of CO2 and H2O happens on temporal scales longer than 100 s. At 80 m, on the other hand, the turbulent fluxes are almost absent in such very stable conditions, suggesting a boundary layer shallower than 80 m. The relationship between TKE and mean winds shows that the stable boundary layer switches from the very stable to the weakly stable regime during intermittent bursts of turbulence. In general, fluxes estimated with long temporal windows that account for the low-frequency effects are more dependent on the stability over a deeper layer above the forest than they are on the stability between the top of the canopy and its interior, suggesting that low-frequency processes are controlled over a deeper layer above the forest.

Details

show
hide
Language(s):
 Dates: 2017-07-072017-07-102018-03
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: BEX581
DOI: 10.5194/acp-18-3083-2018
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Atmospheric Chemistry and Physics
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Katlenburg-Lindau, Germany : European Geosciences Union
Pages: - Volume / Issue: 18 (5) Sequence Number: - Start / End Page: 3083 - 3099 Identifier: ISSN: 1680-7316
CoNE: https://pure.mpg.de/cone/journals/resource/111030403014016