Results 91 to 100 of about 746 (167)

Vertical and horizontal mixing in the tropical tropopause layer

, 2015
Nearly all air enters the stratosphere through a single layer in the tropics. The tropical tropopause layer (TTL) is a transition region between the troposphere and stratosphere and its roles include regulating stratospheric chemistry and surface climate.
Glanville, Anne Alexandra, author, Birner, Thomas, advisor, Randall, David A., committee member, Oprea, Iuliana, committee member   +3 more
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Aerosol in the tropical tropopause layer

, 2011
This thesis details the ACTIVE campaign in the tropics of northern Australia during 2005-2006 (based in Darwin). The focus of the campaign was to find the influence of tropical convection on the aerosol and chemical content of the Tropical Tropopause Layer [TTL] and the cirrus cloud cover in the area, which is important for the global energy budget ...
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Transport and mixing in the Tropical Tropopause Layer [PDF]

, 2011
The TTL is the transition layer between the tropical troposphere and stratosphere, and is the main region where tropospheric air enters the stratosphere. In this thesis different transport processes are studied by using in situ measurements of tracers.
openaire  

The observation of nitric acid-containing particles in the tropical lower stratosphere [PDF]

Atmospheric Chemistry and Physics, 2006
Airborne in situ measurements over the eastern Pacific Ocean in January 2004 have revealed a new category of nitric acid (HNO3)-containing particles in the tropical lower stratosphere.
P. J. Popp, P. J. Popp, T. P. Marcy, T. P. Marcy, E. J. Jensen, B. Kärcher, D. W. Fahey, R. S. Gao, T. L. Thompson, K. H. Rosenlof, E. C. Richard, E. C. Richard, E. C. Richard, R. L. Herman, E. M. Weinstock, J. B. Smith, R. D. May, H. Vömel, J. C. Wilson, A. J. Heymsfield, M. J. Mahoney, A. M. Thompson   +21 more
doaj  

Seasonal and inter-annual variations in troposphere-to-stratosphere transport from the tropical tropopause layer [PDF]

Atmospheric Chemistry and Physics, 2008
In an earlier study of troposphere-to-stratosphere transport (TST) via the tropical tropopause layer (TTL), we found that the vast majority of air parcels undergoing TST from the base of the TTL enter the extratropical lowermost stratosphere quasi ...
J. G. Levine, P. Braesicke, N. R. P. Harris, J. A. Pyle   +3 more
doaj  

Diagnostics of the Tropical Tropopause Layer from in-situ observations and CCM data [PDF]

Atmospheric Chemistry and Physics, 2009
A suite of diagnostics is applied to in-situ aircraft measurements and one Chemistry-Climate Model (CCM) data to characterize the vertical structure of the Tropical Tropopause Layer (TTL).
C. M. Volk, F. D'Amato, F. Ravegnani, C. Schiller, E. Manzini, G. Di Donfrancesco, F. Cairo, C. Cagnazzo, F. Fierli, E. Palazzi   +9 more
doaj  

Physical Processes Controlling the Vertical and Longitudinal Distributions of Relative Humidity in the Tropical Tropopause Layer Over the Pacific. [PDF]

J Geophys Res Atmos, 2017
Jensen EJ, Thornberry T, Rollins A, Ueyama R, Pfister L, Bui TV, Diskin GS, DiGangi JP, Hintsa E, Gao RS, Woods S, Lawson RP, Pittman J.   +12 more
europepmc   +1 more source

Tropical Cirrus in Global‐Storm Resolving Models: 3. Seasonal Changes and TTL Cirrus in the Tropical Western Pacific Using DYAMOND

Earth and Space Science
Recent advances in computer modeling have spurred the production of several global storm‐resolving models (GSRMs), which explicitly represent atmospheric circulations from convective to global scales.
S. M. Turbeville, T. P. Ackerman, P. N. Blossey   +2 more
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Waves and turbulence at the tropical tropopause and their impacts on tropical tropopause layer cirrus

, 2017
Atmospheric waves and turbulence and their impacts on cirrus clouds in the Tropical Tropopause Layer (TTL, 14-18 km altitude) are studied using in situ observations, numerical simulations and theoretical approaches.First, long-duration stratospheric balloon measurements are used to analyze Lagrangian temperature and vertical wind fluctuations induced ...
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Resolving the 21st century temperature trends of the upper troposphere-lower stratosphere with satellite observations. [PDF]

Sci Rep, 2023
Ladstädter F, Steiner AK, Gleisner H.
europepmc   +1 more source