Numerical simulations of gravity waves and turbulence during the ATReC campaign

Todd P. Lane; Robert D. Sharman; Hsiao Ming Hsu; William D. Hall; Melvyn A. Shapiro; Riwal Plougonven; John J. Murray

Numerical simulations of gravity waves and turbulence during the ATReC campaign

Todd P. Lane
, Robert D. Sharman
, Hsiao Ming Hsu
, William D. Hall
, Melvyn A. Shapiro
, Riwal Plougonven
, John J. Murray

National Center for Atmospheric Research
National Oceanic and Atmospheric Administration
University of St Andrews
NASA Langley Research Center

Research output: Abstract › Paper › peer-review

3 Scopus citations

Abstract

During the Atlantic THORPEX Regional Campaign (ATReC) the NOAA Gulfstream-IV weather reconnaissance aircraft experienced severe clear-air turbulence while above a region of active moist convection, to the east of a surface low pressure system off the north-east coast of the United States. In-situ measurements of this encounter are presented, along with turbulence parameters derived from spectral analysis of the measurements. Results from a multiply-nested numerical simulation of the event are also presented. These simulations show that the turbulence occurred in a region of low background Richardson number. This region of low Richardson number is perturbed by vertically propagating gravity waves generated by the underlying convection. The perturbations are substantial enough to initiate a turbulent instability.

Original language	English
Pages	11963-11969
Number of pages	7
State	Published - 2005
Event	43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States Duration: Jan 10 2005 → Jan 13 2005

Conference

Conference	43rd AIAA Aerospace Sciences Meeting and Exhibit
Country/Territory	United States
City	Reno, NV
Period	01/10/05 → 01/13/05

Cite this

@conference{ed70e8e758624304b1be9e1f6319d126,

title = "Numerical simulations of gravity waves and turbulence during the ATReC campaign",

abstract = "During the Atlantic THORPEX Regional Campaign (ATReC) the NOAA Gulfstream-IV weather reconnaissance aircraft experienced severe clear-air turbulence while above a region of active moist convection, to the east of a surface low pressure system off the north-east coast of the United States. In-situ measurements of this encounter are presented, along with turbulence parameters derived from spectral analysis of the measurements. Results from a multiply-nested numerical simulation of the event are also presented. These simulations show that the turbulence occurred in a region of low background Richardson number. This region of low Richardson number is perturbed by vertically propagating gravity waves generated by the underlying convection. The perturbations are substantial enough to initiate a turbulent instability.",

author = "Lane, \{Todd P.\} and Sharman, \{Robert D.\} and Hsu, \{Hsiao Ming\} and Hall, \{William D.\} and Shapiro, \{Melvyn A.\} and Riwal Plougonven and Murray, \{John J.\}",

year = "2005",

language = "English",

pages = "11963--11969",

note = "43rd AIAA Aerospace Sciences Meeting and Exhibit ; Conference date: 10-01-2005 Through 13-01-2005",

}

TY - CONF

T1 - Numerical simulations of gravity waves and turbulence during the ATReC campaign

AU - Lane, Todd P.

AU - Sharman, Robert D.

AU - Hsu, Hsiao Ming

AU - Hall, William D.

AU - Shapiro, Melvyn A.

AU - Plougonven, Riwal

AU - Murray, John J.

PY - 2005

Y1 - 2005

N2 - During the Atlantic THORPEX Regional Campaign (ATReC) the NOAA Gulfstream-IV weather reconnaissance aircraft experienced severe clear-air turbulence while above a region of active moist convection, to the east of a surface low pressure system off the north-east coast of the United States. In-situ measurements of this encounter are presented, along with turbulence parameters derived from spectral analysis of the measurements. Results from a multiply-nested numerical simulation of the event are also presented. These simulations show that the turbulence occurred in a region of low background Richardson number. This region of low Richardson number is perturbed by vertically propagating gravity waves generated by the underlying convection. The perturbations are substantial enough to initiate a turbulent instability.

AB - During the Atlantic THORPEX Regional Campaign (ATReC) the NOAA Gulfstream-IV weather reconnaissance aircraft experienced severe clear-air turbulence while above a region of active moist convection, to the east of a surface low pressure system off the north-east coast of the United States. In-situ measurements of this encounter are presented, along with turbulence parameters derived from spectral analysis of the measurements. Results from a multiply-nested numerical simulation of the event are also presented. These simulations show that the turbulence occurred in a region of low background Richardson number. This region of low Richardson number is perturbed by vertically propagating gravity waves generated by the underlying convection. The perturbations are substantial enough to initiate a turbulent instability.

UR - https://www.scopus.com/pages/publications/30744453995

M3 - Paper

AN - SCOPUS:30744453995

SP - 11963

EP - 11969

T2 - 43rd AIAA Aerospace Sciences Meeting and Exhibit

Y2 - 10 January 2005 through 13 January 2005

ER -

Numerical simulations of gravity waves and turbulence during the ATReC campaign

Abstract

Conference

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