Award Abstract # 0527385
Mixing and Transport in the Upper Troposphere and Lower Stratosphere

NSF Org: AGS
Division of Atmospheric and Geospace Sciences
Recipient: NORTHWEST RESEARCH ASSOCIATES, INC.
Initial Amendment Date: September 14, 2005
Latest Amendment Date: September 14, 2005
Award Number: 0527385
Award Instrument: Standard Grant
Program Manager: Jay S. Fein
AGS
 Division of Atmospheric and Geospace Sciences
GEO
 Directorate for Geosciences
Start Date: October 1, 2005
End Date: September 30, 2008 (Estimated)
Total Intended Award Amount: $273,030.00
Total Awarded Amount to Date: $273,030.00
Funds Obligated to Date: FY 2005 = $273,030.00
History of Investigator:
  • Richard Scott (Principal Investigator)
    scott@nwra.com
Recipient Sponsored Research Office: NorthWest Research Associates, Incorporated
1100 NE 45TH ST, STE 500
SEATTLE
WA  US  98105-4696
(206)556-8151
Sponsor Congressional District: 07
Primary Place of Performance: NorthWest Research Associates, Incorporated
1100 NE 45TH ST, STE 500
SEATTLE
WA  US  98105-4696
Primary Place of Performance
Congressional District:
07
Unique Entity Identifier (UEI): CBP3W28RNZB3
Parent UEI:
NSF Program(s): Atmospheric Chemistry,
Climate & Large-Scale Dynamics
Primary Program Source: app-0105 
Program Reference Code(s): 0000, 1527, 4444, OTHR
Program Element Code(s): 152400, 574000
Award Agency Code: 4900
Fund Agency Code: 4900
Assistance Listing Number(s): 47.050

ABSTRACT

The upper troposphere/lower stratosphere (UTLS) is a transit region, the dynamics of which is still insufficiently understood. This research seeks to address a range of questions concerning the dynamics of the UTLS, the resulting impacts on UTLS tracers (H20 and O3), and dynamical forcing by the two tracers on the UTLS. A simple, yet dynamically consistent model will be used to generate flows and to isolate and understand associated transport processes and mixing regimes. An underlying theme is the search for an accurate description of the small-scale structures resulting from typical mixing processes in the UTLS region.

Intellectual merit. The PI will improve our fundamental understanding of mixing and transport processes in the UTLS region. Particular attention will be paid to the mixing and transport of radiatively and chemically important trace species, stratosphere-troposphere exchange, the transport of water vapor from the tropics to the extratropics, and transport by monsoon circulations. Completion of this work will offer new insights into:

1. Mixing processes and the resulting fine-scale constituent distributions in the UTLS region, and
2. Further understanding of climate sensitivity to dynamics of UTLS.

Broader impacts. The issues addressed by this research are fundamental to our understanding of the mixing and transport processes in the UTLS on a range of spatial and temporal scales, an area of much recent research. A new flux parameterization may be developed. This work is closely related to key initiatives of the Stratospheric Processes And their Role in Climate (SPARC) project, a component of the World Climate Research Program.

PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

Note:  When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

Dunkerton, T.J., Scott, R.K. "A barotropic model of the angular momentum conserving potential vorticity staircase in spherical geometry" J. Atmos. Sci. , v.65 , 2008 , p.1105
Scott, RK "Local and nonlocal advection of a passive scalar" PHYSICS OF FLUIDS , v.18 , 2006 View record at Web of Science 10.1063/1.237502
Scott, RK "Nonrobustness of the two-dimensional turbulent inverse cascade" PHYSICAL REVIEW E , v.75 , 2007 View record at Web of Science 10.1103/PhysRevE.75.04630
Scott, R.K., Polvani, L.M "Equatorial superrotation in shallow atmosphere models" Geophysical Research Letters , v.35 , 2008 , p.L24202 doi:10.1029/2008GL036060
Scott, R.K., Polvani, L.M "Forced-dissipative shallow water turbulence on the sphere and the atmospheric circulation of the gas planets" J. Atmos. Sci. , v.64 , 2007 , p.3158

Please report errors in award information by writing to: awardsearch@nsf.gov.

Print this page

Back to Top of page