Next Article in Journal
Effects of Stratospheric Conditions on the Viability, Metabolism and Proteome of Prokaryotic Cells
Next Article in Special Issue
Radiation Balance of Urban Materials and Their Thermal Impact in Semi-Desert Region: Mexicali, México Study Case
Previous Article in Journal
Analysis of PAHs Associated with Particulate Matter PM2.5 in Two Places at the City of Cuernavaca, Morelos, México
Previous Article in Special Issue
Scaling Flux Tower Observations of Sensible Heat Flux Using Weighted Area-to-Area Regression Kriging
Article Menu

Export Article

Open AccessArticle
Atmosphere 2015, 6(9), 1271-1289; doi:10.3390/atmos6091271

Characteristics of Gravity Waves over an Antarctic Ice Sheet during an Austral Summer

1
Istituto di Scienze dell'Atmosfera e del Clima, ISAC-CNR, strada. prov. Lecce-Monteroni km 1.2, Lecce 73100, Italy
2
Department of Basic Sciences (DiSBeF), Università degli Studi di Urbino "Carlo Bo", Scientific Campus "Sogesta", Urbino 61029, Italy
3
CINFAI (National Inter-University Consortium for Physics of the Atmosphere and Hydrosphere), Tolentino, 62029, Italy
4
Nicholas School of the Environment, Duke University, Box 90328, Durham, NC 27708, USA,
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editors: Daniele Contini and Robert W. Talbot
Received: 4 June 2015 / Revised: 12 August 2015 / Accepted: 17 August 2015 / Published: 25 August 2015
View Full-Text   |   Download PDF [1878 KB, uploaded 25 August 2015]   |  

Abstract

While occurrences of wavelike motion in the stable boundary layer due to the presence of a significant restoring buoyancy force are rarely disputed, their modalities and interaction with turbulence remain a subject of active research. In this work, the characteristics of gravity waves and their impact on flow statistics, including turbulent fluxes, are presented using data collected above an Antarctic Ice sheet during an Austral Summer. Antarctica is an ideal location for exploring the characteristics of gravity waves because of persistent conditions of strong atmospheric stability in the lower troposphere. Periods dominated by wavelike motion have been identified by analysing time series measured by fast response instrumentation. The nature and characteristic of the dominant wavy motions are investigated using Fourier cross-spectral indicators. Moreover, a multi-resolution decomposition has been applied to separate gravity waves from turbulent fluctuations in case of a sufficiently defined spectral gap. Statistics computed after removing wavy disturbances highlight the large impact of gravity waves on second order turbulent quantities including turbulent flux calculations. View Full-Text
Keywords: Antarctica; gravity waves; multiresolution decomposition; stable boundary layer; turbulent fluxes Antarctica; gravity waves; multiresolution decomposition; stable boundary layer; turbulent fluxes
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Cava, D.; Giostra, U.; Katul, G. Characteristics of Gravity Waves over an Antarctic Ice Sheet during an Austral Summer. Atmosphere 2015, 6, 1271-1289.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Atmosphere EISSN 2073-4433 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top