Results 21 to 30 of about 12,014 (246)

Multi-model assessment of stratospheric ozone return dates and ozone recovery in CCMVal-2 models [PDF]

Atmospheric Chemistry and Physics, 2010
Projections of stratospheric ozone from a suite of chemistry-climate models (CCMs) have been analyzed. In addition to a reference simulation where anthropogenic halogenated ozone depleting substances (ODSs) and greenhouse gases (GHGs) vary with time ...
V. Eyring, I. Cionni, G. E. Bodeker, A. J. Charlton-Perez, D. E. Kinnison, J. F. Scinocca, D. W. Waugh, H. Akiyoshi, S. Bekki, M. P. Chipperfield, M. Dameris, S. Dhomse, S. M. Frith, H. Garny, A. Gettelman, A. Kubin, U. Langematz, E. Mancini, M. Marchand, T. Nakamura, L. D. Oman, S. Pawson, G. Pitari, D. A. Plummer, E. Rozanov, T. G. Shepherd, K. Shibata, W. Tian, P. Braesicke, S. C. Hardiman, J. F. Lamarque, O. Morgenstern, J. A. Pyle, D. Smale, Y. Yamashita   +34 more
doaj   +1 more source

The Spatiotemporal Variations of  Total Column Ozone Concentration over Ethiopia

AIP Advances, 2022
Abstract We have studied the spatiotemporal characteristics of ozone concentration over Ethiopia using Ozone Mapper and Profiling Suite (OMPS) Satellite measurements. Daily total column ozone measurements of 252 data points with spatial resolution 1 ◦ × 1 ◦ for the study area and its surrounding during the period 2012 – 2020 have been analyzed.
Abebaw Bizuneh Alemu, Abdu Mohammed Seid, Baylie Damtie, U. Jaya Parakash Raju   +3 more
openaire   +2 more sources

SPATIAL AND TEMPORAL VARIATION OF TOTAL AND TROPOSPHERIC OZONE COLUMNS OVER CHINA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
In this study, total ozone columns collected from nine sites of the AErosol RObotic NETwork (AERONET) in China are used to evaluate total ozone column monthly mean products of the Ozone Monitoring Instrument (OMI).
X. Li, Y. J. Li, Q. M. Ma, J. Chen, F. Chen, X. Y. Yang, Q. J. Wang   +6 more
doaj   +1 more source

Total column ozone in New Zealand and in the UK in the 1950s [PDF]

Atmospheric Chemistry and Physics, 2020
Abstract. Total column ozone measurements reach back almost a century. Historical column ozone data are important not only for obtaining a long-term perspective of changes of the ozone layer but arguably also as diagnostics of lower-stratospheric or tropopause-level flow in time periods of sparse upper-air observations. With the exception of a few high-
S. Brönnimann, S. Brönnimann, S. Nichol   +2 more
openaire   +3 more sources

1979-1999 satellite total ozone column measurements over West Africa

Annals of Geophysics, 2000
Total Ozone Mapping Spectrometer (TOMS) instruments have been flown on NASA/GSFC satellites for over 20 years. They provide near real-time ozone data for Atmospheric Science Research.
P. Di Carlo, F. Masci, V. Rizi, T. C. Chineke, M. Iarlori   +4 more
doaj   +1 more source

On the assimilation of total-ozone satellite data [PDF]

Annales Geophysicae, 1996
A two-dimensional model for advection and data assimilation of total-ozone data has been developed. The Assimilation Model KNMI (AMK) is a global model describing the transport of the column amounts of ozone, by a wind field at a single pressure level,
P. F. Levelt, M. A. Allaart, H. M. Kelder   +2 more
doaj   +1 more source

Stratospheric Warming Events in the Period January–March 2023 and Their Impact on Stratospheric Ozone in the Northern Hemisphere

Atmosphere, 2023
In this investigation, a comparison is presented between variations in temperature and ozone concentration at different altitude levels in the stratosphere for the Northern Hemisphere in the conditions of Sudden Stratospheric Warming (SSW) for the period
Plamen Mukhtarov, Nikolay Miloshev, Rumiana Bojilova   +2 more
doaj   +1 more source

On ozone trend detection: using coupled chemistry–climate simulations to investigate early signs of total column ozone recovery [PDF]

Atmospheric Chemistry and Physics, 2018
Total column ozone values from an ensemble of UM-UKCA model simulations are examined to investigate different definitions of progress on the road to ozone recovery. The impacts of modelled internal atmospheric variability are accounted for by applying
J. Keeble, H. Brown, N. L. Abraham, N. L. Abraham, N. R. P. Harris, J. A. Pyle, J. A. Pyle   +6 more
doaj   +1 more source

A Study of the Vertical Distribution and Sub-Peaks of Ozone below 12 km over Wuyishan Region Based on Ozone Sounding in Winter

Atmosphere, 2022
An understanding of the vertical distribution of ozone is critical to assessing the ozone variabilities both in the stratosphere and the troposphere. We collected the profiles of atmospheric ozone partial pressure and ozone volume mixing ratio (VMR) by a
Yulan Zheng, Huiying Deng, Huabiao You, Yiming Qiu, Tianfu Zhu, Xugeng Cheng, Hong Wang   +6 more
doaj   +1 more source

The sensitivity of stratospheric ozone changes through the 21st century to N₂O and CH₄ [PDF]

Atmospheric Chemistry and Physics, 2012
Through the 21st century, anthropogenic emissions of the greenhouse gases N2O and CH4 are projected to increase, thus increasing their atmospheric concentrations.
B. E. Williamson, E. Rozanov, P. E. Huck, G. E. Bodeker, L. E. Revell   +4 more
doaj   +1 more source