Combining AIRS and MLS observations for three-dimensional gravity wave measurement

Research output: Contribution to journalArticle

  • 11 Citations

Abstract

Gravity waves play a critical role in transporting energy and momentum between the troposphere, stratosphere, and mesosphere. Satellite measurements provide a powerful tool to investigate these waves across the globe. However, many present methods cannot yield reliable estimates of wave momentum fluxes or the directions of these fluxes. Here we present a new method which addresses this problem by combining observations from Atmospheric Infrared Sounder (AIRS) and Microwave Limb Sounder (MLS) in three dimensions. The method allows direct estimation of horizontal and vertical wavelengths as well as wave amplitude. This in turn allows estimation of both wave momentum flux and the full 3-D direction of propagation, crucially including the horizontal direction. The method thus allows separation of the data into, for example, eastward and westward momentum fluxes, allowing estimation of the net atmospheric forcing due to these waves. We illustrate this method with a proof-of-concept study over the Andes, arguably the largest source of gravity waves in the world. We further critically assess the advantages and disadvantages of our method. Our study highlights the importance of the difference between net and absolute measures of momentum flux.
LanguageEnglish
Pages884-893
JournalGeophysical Research Letters
Volume43
Issue number2
Early online date23 Jan 2016
DOIs
StatusPublished - 28 Jan 2016

Fingerprint

microwave limb sounder
AIRS
gravity waves
limbs
gravity wave
momentum
microwaves
acoustics
globes
mesosphere
stratosphere
troposphere
atmospheric forcing
method
propagation
wavelength
estimates
wavelengths
energy

Cite this

@article{4624288a11794b3e8cd532d8eebb8f87,
title = "Combining AIRS and MLS observations for three-dimensional gravity wave measurement",
abstract = "Gravity waves play a critical role in transporting energy and momentum between the troposphere, stratosphere, and mesosphere. Satellite measurements provide a powerful tool to investigate these waves across the globe. However, many present methods cannot yield reliable estimates of wave momentum fluxes or the directions of these fluxes. Here we present a new method which addresses this problem by combining observations from Atmospheric Infrared Sounder (AIRS) and Microwave Limb Sounder (MLS) in three dimensions. The method allows direct estimation of horizontal and vertical wavelengths as well as wave amplitude. This in turn allows estimation of both wave momentum flux and the full 3-D direction of propagation, crucially including the horizontal direction. The method thus allows separation of the data into, for example, eastward and westward momentum fluxes, allowing estimation of the net atmospheric forcing due to these waves. We illustrate this method with a proof-of-concept study over the Andes, arguably the largest source of gravity waves in the world. We further critically assess the advantages and disadvantages of our method. Our study highlights the importance of the difference between net and absolute measures of momentum flux.",
author = "Wright, {Corwin J.} and Hindley, {Neil P.} and Mitchell, {Nicholas J.}",
year = "2016",
month = "1",
day = "28",
doi = "10.1002/grl.v43.2",
language = "English",
volume = "43",
pages = "884--893",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "Wiley-Blackwell",
number = "2",

}

TY - JOUR

T1 - Combining AIRS and MLS observations for three-dimensional gravity wave measurement

AU - Wright,Corwin J.

AU - Hindley,Neil P.

AU - Mitchell,Nicholas J.

PY - 2016/1/28

Y1 - 2016/1/28

N2 - Gravity waves play a critical role in transporting energy and momentum between the troposphere, stratosphere, and mesosphere. Satellite measurements provide a powerful tool to investigate these waves across the globe. However, many present methods cannot yield reliable estimates of wave momentum fluxes or the directions of these fluxes. Here we present a new method which addresses this problem by combining observations from Atmospheric Infrared Sounder (AIRS) and Microwave Limb Sounder (MLS) in three dimensions. The method allows direct estimation of horizontal and vertical wavelengths as well as wave amplitude. This in turn allows estimation of both wave momentum flux and the full 3-D direction of propagation, crucially including the horizontal direction. The method thus allows separation of the data into, for example, eastward and westward momentum fluxes, allowing estimation of the net atmospheric forcing due to these waves. We illustrate this method with a proof-of-concept study over the Andes, arguably the largest source of gravity waves in the world. We further critically assess the advantages and disadvantages of our method. Our study highlights the importance of the difference between net and absolute measures of momentum flux.

AB - Gravity waves play a critical role in transporting energy and momentum between the troposphere, stratosphere, and mesosphere. Satellite measurements provide a powerful tool to investigate these waves across the globe. However, many present methods cannot yield reliable estimates of wave momentum fluxes or the directions of these fluxes. Here we present a new method which addresses this problem by combining observations from Atmospheric Infrared Sounder (AIRS) and Microwave Limb Sounder (MLS) in three dimensions. The method allows direct estimation of horizontal and vertical wavelengths as well as wave amplitude. This in turn allows estimation of both wave momentum flux and the full 3-D direction of propagation, crucially including the horizontal direction. The method thus allows separation of the data into, for example, eastward and westward momentum fluxes, allowing estimation of the net atmospheric forcing due to these waves. We illustrate this method with a proof-of-concept study over the Andes, arguably the largest source of gravity waves in the world. We further critically assess the advantages and disadvantages of our method. Our study highlights the importance of the difference between net and absolute measures of momentum flux.

UR - http://doi.org./10.1002/2015GL067233

UR - http://doi.org./10.1002/2015GL067233

U2 - 10.1002/grl.v43.2

DO - 10.1002/grl.v43.2

M3 - Article

VL - 43

SP - 884

EP - 893

JO - Geophysical Research Letters

T2 - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 2

ER -