Seasonal and Diurnal Variations of Tropical Tropopause Layer (TTL) Over the Indian Peninsula
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چکیده
منابع مشابه
Seasonal and inter-annual variations in troposphere-to-stratosphere transport from the tropical tropopause layer
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-horizontally and show little or no regional preference with regards to origin in the TTL or entry into the stratosphere. We have since repeated the t...
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During the second part of the TROCCINOX campaign that took place in Brazil in early 2005, chemical species were measured on-board the high-altitude research aircraft Geophysica (ozone, water vapor, NO, NOy, CH4 and CO) in the altitude range up to 20 km (or up to 450 K potential temperature), i.e. spanning the entire TTL region roughly extending between 350 and 420 K. Here, analysis of transport...
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A long-term climatology of air mass transport through the tropical tropopause layer (TTL) is presented, covering the period from 1962–2005. The transport through the TTL is calculated with a Lagrangian approach using radiative heating rates as vertical velocities in an isentropic trajectory model. We demonstrate the improved performance of such an approach compared to previous studies using ver...
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Temperature and water vapor variations due to clouds in the tropical tropopause layer (TTL) are investigated using co-located MLS, CALIPSO, and CloudSat data. Convective cooling occurs only up to the cloud tops, with warming above these heights in the TTL. Water vapor and ozone anomalies above the cloud tops are consistent with the warming being due to downward motion. Thicker clouds are associ...
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In situ observations of “cold trap” dehydration in the western tropical Pacific F. Hasebe, M. Fujiwara, N. Nishi, M. Shiotani, H. Vömel, S. Oltmans, H. Takashima, S. Saraspriya, and N. Komala Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan Geophysical Institute, Kyoto University, Kyoto, Japan Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Jap...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Atmospheres
سال: 2017
ISSN: 2169-897X,2169-8996
DOI: 10.1002/2017jd027056