Mesoscale gravity wave variances from AMSU-A radiances

[1] A variance analysis technique is developed here to extract gravity wave (GW) induced temperature fluctuations from NOAA AMSU-A (Advanced Microwave Sounding Unit-A) radiance measurements. By carefully removing the instrument/measurement noise, the algorithm can produce reliable GW variances with...

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Bibliographic Details
Main Author: Dong L. Wu
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Atmospheric Composition and Structure
Pressure
density
and temperature
0341 Atmospheric Composition and Structure
Middle atmosphere—constituent transport and chemistry (3334
1640 Global Change
Remote sensing. Citation
Antarctic
Antarc*
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.597.8582
http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/40861/1/04-0023.pdf
Description
Summary:[1] A variance analysis technique is developed here to extract gravity wave (GW) induced temperature fluctuations from NOAA AMSU-A (Advanced Microwave Sounding Unit-A) radiance measurements. By carefully removing the instrument/measurement noise, the algorithm can produce reliable GW variances with the minimum detectable value as small as 0.1 K2. Preliminary analyses with AMSU-A data showGWvariancemaps in the stratosphere have very similar distributions to those found with the UARS MLS (Upper Atmosphere Research Satellite Microwave Limb Sounder). However, the AMSU-A offers better horizontal and temporal resolution for observing regional GW variability, such as activity over sub-Antarctic islands. INDEX TERMS: 0350

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