Results 31 to 40 of about 700 (138)

Implication of tropical lower stratospheric cooling in recent trends in tropical circulation and deep convective activity [PDF]

Atmospheric Chemistry and Physics, 2019
Large changes in tropical circulation from the mid-to-late 1990s to the present, in particular changes related to the summer monsoon and cooling of the sea surface in the equatorial eastern Pacific, are noted.
K. Kodera, N. Eguchi, R. Ueyama, Y. Kuroda, Y. Kuroda, C. Kobayashi, B. M. Funatsu, C. Claud   +7 more
doaj   +1 more source

Detection of reactive nitrogen containing particles in the tropopause region – evidence for a tropical nitric acid trihydrate (NAT) belt [PDF]

Atmospheric Chemistry and Physics, 2008
The detection of nitric acid trihydrate (NAT, HNO₃×3H₂O) particles in the tropical transition layer (TTL) harmonizes our understanding of polar stratospheric cloud formation. Large reactive nitrogen
C. Voigt, H. Schlager, A. Roiger, A. Stenke, M. de Reus, S. Borrmann, E. Jensen, C. Schiller, P. Konopka, N. Sitnikov   +9 more
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Ultrathin Tropical Tropopause Clouds (UTTCs): I. Cloud morphology and occurrence [PDF]

Atmospheric Chemistry and Physics, 2003
Subvisible cirrus clouds (SVCs) may contribute to dehydration close to the tropical tropopause. The higher and colder SVCs and the larger their ice crystals, the more likely they represent the last efficient point of contact of the gas phase with the ...
Th. Peter, B. P. Luo, M. Wirth, C. Kiemle, H. Flentje, V. A. Yushkov, V. Khattatov, V. Rudakov, A. Thomas, S. Borrmann, G. Toci, P. Mazzinghi, J. Beuermann, C. Schiller, F. Cairo, G. Di Donfrancesco, A. Adriani, C. M. Volk, J. Strom, K. Noone, V. Mitev, R. A. MacKenzie, K. S. Carslaw, T. Trautmann, V. Santacesaria, L. Stefanutti   +25 more
doaj  

Tropical Cyclones Reduce Ozone in the Tropopause Region Over the Western Pacific: An Analysis of 18 Years Ozonesonde Profiles

Earth's Future, 2021
Typhoons play a key role in causing low ozone concentrations in the upper troposphere and lower stratosphere (UTLS) over the western Pacific. In this study, 18 years records (2000–2017) of balloon‐borne ozone measurements in Hong Kong (22.3°N, 114.2°E ...
Dan Li, Bärbel Vogel, Rolf Müller, Jianchun Bian, Gebhard Günther, Martin Riese   +5 more
doaj   +1 more source

Seasonality and extent of extratropical TST derived from in-situ CO measurements during SPURT [PDF]

Atmospheric Chemistry and Physics, 2004
We present airborne in-situ trace gas measurements which were performed on eight campaigns between November 2001 and July 2003 during the SPURT-project (SPURenstofftransport in der Tropopausenregion, trace gas transport in the tropopause region).
P. Hoor, P. Hoor, C. Gurk, D. Brunner, M. I. Hegglin, H. Wernli, H. Wernli, H. Fischer   +7 more
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Ultrathin Tropical Tropopause Clouds (UTTCs): II. Stabilization mechanisms [PDF]

Atmospheric Chemistry and Physics, 2003
Mechanisms by which subvisible cirrus clouds (SVCs) might contribute to dehydration close to the tropical tropopause are not well understood. Recently Ultrathin Tropical Tropopause Clouds (UTTCs) with optical depths around 10-4 have been detected in ...
B. P. Luo, Th. Peter, H. Wernli, S. Fueglistaler, M. Wirth, C. Kiemle, H. Flentje, V. A. Yushkov, V. Khattatov, V. Rudakov, A. Thomas, S. Borrmann, G. Toci, P. Mazzinghi, J. Beuermann, C. Schiller, F. Cairo, G. Di Don-Francesco, A. Adriani, C. M. Volk, J. Strom, K. Noone, V. Mitev, R. A. MacKenzie, K. S. Carslaw, T. Trautmann, V. Santacesaria, L. Stefanutti   +27 more
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High supersaturation inside cirrus in well‐developed tropical tropopause layer over Indonesia

Geophysical Research Letters, 2012
The relationship between relative humidity and cirrus clouds in the tropical tropopause layer (TTL) is investigated using balloon‐borne cryogenic frostpoint hygrometers (CFH) and quasi‐collocated measurements of space‐borne Cloud‐Aerosol Lidar with ...
Y. Inai, T. Shibata, M. Fujiwara, F. Hasebe, H. Vömel   +4 more
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The CO2 tracer clock for the Tropical Tropopause Layer [PDF]

Atmospheric Chemistry and Physics, 2007
Observations of CO2 were made in the upper troposphere and lower stratosphere in the deep tropics in order to determine the patterns of large-scale vertical transport and age of air in the Tropical Tropopause Layer (TTL).
R.-S. Gao, E. L. Atlas, T. P. Bui, A. Bright, D. M. Matross, D. J. Curran, E. W. Gottlieb, V. Y. Chow, L. Pfister, T. J. Conway, B. C. Daube, R. Jiménez, S. Park, C. H. Twohy, S. C. Wofsy   +14 more
doaj  

Bromine partitioning in the tropical tropopause layer: implications for stratospheric injection [PDF]

Atmospheric Chemistry and Physics, 2014
Very short-lived (VSL) bromocarbons are produced at a prodigious rate by ocean biology and these source compounds (SGVSL), together with their inorganic degradation products (PGVSL), are lofted by vigorous convection to the tropical tropopause layer (TTL)
R. P. Fernandez, R. J. Salawitch, D. E. Kinnison, J.-F. Lamarque, A. Saiz-Lopez   +4 more
doaj   +1 more source

Impacts of the Lower Stratosphere on the Development of Intense Tropical Cyclones

Atmosphere, 2017
This study examines potential impacts of the lower stratosphere on the development and the inner-core structure of intense tropical cyclones (TCs).
Zachary Moon, Chanh Kieu
doaj   +1 more source