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Super-pressure balloon observation of gravity waves over the Antarctic Y. Tomikawa

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Super-pressure balloon observation of gravity waves over the Antarctic

Y. Tomikawa

1,2

*, K. Sato

3

, Y. Saito

4

, I. Murata

5

, N. Hirasawa

1,2

, and M. Kohma

3

1

National Institute of Polar Research, Japan

2

SOKENDAI (The Graduate University for Advanced Studies), Japan

3

The University of Tokyo, Japan

4

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Japan

5

Tohoku University, Japan

Recently super-pressure balloons (SPBs) have been developed, which can float at a constant density surface in the troposphere

and stratosphere for long duration (i.e., several months). They can follow Lagrangian motions of air parcels, which is

beneficial for gravity wave studies. Gravity wave is one of uncertain factors in current climate models, in which it is required

to obtain its stochastic features as well as its spatial and temporal mean behavior. SPBs enable us to obtain stochastic features

of gravity waves in a full frequency range from Brunt-Vaisala frequency to inertial frequency. Our group proposes new SPB

observations in the Antarctic.

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