Results 21 to 30 of about 12,264 (254)

Effects of stratosphere‐troposphere chemistry coupling on tropospheric ozone [PDF]

Journal of Geophysical Research: Atmospheres, 2010
A new, computationally efficient coupled stratosphere‐troposphere chemistry‐climate model (S/T‐CCM) has been developed based on three well‐documented components: a 64‐level general circulation model from the UK Met Office Unified Model, the tropospheric chemistry transport model (STOCHEM), and the UMSLIMCAT stratospheric chemistry module.
Tian, Wenshou, Chipperfield, Martyn P., Stevenson, David S.; id_orcid 0000-0002-4745-5673, Damoah, Richard, Dhomse, Sandip, Dudhia, Anu, Pumphrey, Hugh, Bernath, Peter   +7 more
openaire   +1 more source

Generation of Meteorological Parameters for Tropospheric Delay on GNSS Signal [PDF]

Journal of Astronomy and Space Sciences, 2008
The GNSS (Global Navigation Satellite System) signal is delayed by the neutral atmosphere at the troposphere, so that the delay is one of major error sources for GNSS precise positioning. The tropospheric delay is an integrated refractive index along the
Sung-Wook Jung, Jeongho Baek, Jung Hyun Jo, Jaewon Lee, In-Kwan Park, Sungki Cho, Jong-Uk Park   +6 more
doaj   +1 more source

Investigation of the limonene photooxidation by OH at different NO concentrations in the atmospheric simulation chamber SAPHIR (Simulation of Atmospheric PHotochemistry In a large Reaction Chamber) [PDF]

Atmospheric Chemistry and Physics, 2022
The oxidation of limonene by the hydroxyl (OH) radical and ozone (O3) was investigated in the atmospheric simulation chamber SAPHIR (Simulation of Atmospheric PHotochemistry In a large Reaction Chamber) in experiments performed at different nitric oxide (
J. Y. S. Pang, A. Novelli, M. Kaminski, M. Kaminski, I.-H. Acir, I.-H. Acir, B. Bohn, P. T. M. Carlsson, C. Cho, C. Cho, H.-P. Dorn, A. Hofzumahaus, X. Li, X. Li, A. Lutz, S. Nehr, S. Nehr, D. Reimer, F. Rohrer, R. Tillmann, R. Wegener, A. Kiendler-Scharr, A. Kiendler-Scharr, A. Wahner, H. Fuchs, H. Fuchs   +25 more
doaj   +1 more source

Variations in Ozone Concentration over the Mid-Latitude Region Revealed by Ozonesonde Observations in Pohang, South Korea

Atmosphere, 2020
Ozone absorbs harmful UV rays at high elevations but acts as a pollutant gas in the lower atmosphere. It is necessary to monitor both the vertical profile and the total column ozone.
Daegeun Shin, Seungjoo Song, Sang-Boom Ryoo, Sang-Sam Lee   +3 more
doaj   +1 more source

The underestimated role of stratosphere-to-troposphere transport on tropospheric ozone [PDF]

, 2018
Abstract. The atmospheric composition is strongly influenced by changing atmospheric dynamics, in potential relation to climate change. A prominent example is the doubling of the stratospheric ozone component at the summit station Zugspitze (2962 m a.s.l., Garmisch-Partenkirchen, Germany) between the mid-seventies and 2005, roughly from 11 ppb to 23 ...
Thomas Trickl, Hannes Vogelmann, Ludwig Ries, Hans-Eckhart Scheel, Michael Sprenger   +4 more
openaire   +2 more sources

Recognition of spatial distribution of convergence fluctuation of VIMFC vertical cumulative moisture on Iran’s atmosphere during 1979-2013 [PDF]

تحقیقات کاربردی علوم جغرافیایی, 2021
The aim of this study is to identify the spatial distribution of Vertically Integrated Moisture Flux Convergence (Vertically Integrated) Moisture Flux Convergence) on Iran’s atmosphere.
Farshad Pazhoh, , mehry akbary, Mohammad Darand   +3 more
doaj  

Measurement report: Comprehensive seasonal study of the composition and sources of submicron aerosol during the JULIAC campaign in Germany [PDF]

Atmospheric Chemistry and Physics
The seasonal variations of aerosol sources and their atmospheric evolution are investigated using observations from the year-long JULIAC (Jülich Atmospheric Chemistry Project) campaign (January–November 2019) in Jülich, Germany.
L. Liu, L. Liu, T. Hohaus, A. Hofzumahaus, F. Holland, H. Fuchs, H. Fuchs, R. Tillmann, B. Bohn, S. Andres, Z. Tan, Z. Tan, F. Rohrer, V. A. Karydis, V. Vardhan, V. Vardhan, P. Franke, A. C. Lange, A. Novelli, B. Winter, C. Cho, C. Cho, I. Gensch, S. Wedel, A. Wahner, A. Kiendler-Scharr   +25 more
doaj   +1 more source

The vertical profile of recent tropical temperature trends: Persistent model biases in the context of internal variability

Environmental Research Letters, 2020
Tropospheric and stratospheric tropical temperature trends in recent decades have been notoriously hard to simulate using climate models, particularly in the upper troposphere.
Dann M Mitchell, Y T Eunice Lo, William J M Seviour, Leopold Haimberger, Lorenzo M Polvani   +4 more
doaj   +1 more source

The tropospheric scintillation prediction of earth-to-satellite link for Bangladeshi climatic condition [PDF]

Serbian Journal of Electrical Engineering, 2015
The performance of earth-to-satellite link largely depends on various environmental factors like rain, fog, cloud, and atmospheric effects like ionospheric and tropospheric scintillation.
Hossain Muhammad Sakir, Samad Muhammad Abdus   +1 more
doaj   +1 more source

Tropospheric amplification of stratosphere–troposphere coupling

Quarterly Journal of the Royal Meteorological Society
Abstract During northern winter the stratospheric polar vortex is highly variable — even breaking down completely during sudden stratospheric warmings. The strength of the stratospheric polar vortex is observed to be coupled to surface weather, primarily through swings in the phase of the Northern Annular Mode — which is nearly ...
Mark P. Baldwin, Thomas Birner, Blanca Ayarzagüena   +2 more
openaire   +1 more source